HP CP3525dn Service Manual
HP CP3525dn - Color LaserJet Laser Printer Manual
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HP CP3525dn manual content summary:
- HP CP3525dn | Service Manual - Page 1
HP Color LaserJet CP3525 Series Printer Service Manual Theory of operation Removal and replacement Solve problems Parts list www.hp.com/support/cljcp3525 - HP CP3525dn | Service Manual - Page 2
- HP CP3525dn | Service Manual - Page 3
HP Color LaserJet CP3525 Series Printers Service Manual - HP CP3525dn | Service Manual - Page 4
Hewlett-Packard Development Company, L.P. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The information contained herein is subject to change without notice. The only warranties for HP products and services - HP CP3525dn | Service Manual - Page 5
handling menu ...18 Configure device menu ...19 Printing menu ...19 PCL sub-menu 20 Print Quality menu ...22 System setup menu ...25 I/O menu ...32 Resets menu ...39 Diagnostics menu ...40 Service menu ...42 3 Paper and print media Supported paper and print media sizes 44 Custom paper sizes ...46 - HP CP3525dn | Service Manual - Page 6
product Information pages ...70 HP Easy Printer Care ...71 Open the HP Easy Printer Care software 71 HP Easy Printer Care software sections 71 Embedded HP Encrypted High Performance Hard Disks 79 Lock the control-panel menus 79 Lock the formatter cage ...80 Manage supplies ...81 Print-cartridge - HP CP3525dn | Service Manual - Page 7
cartridges 83 Change the toner collection unit 86 Install memory 89 Install DDR2 memory DIMMs 89 Enable memory for Windows 92 Install an HP Jetdirect or EIO print server card or EIO hard disk ..... 92 Clean the product ...96 Clean the exterior ...96 Clean spilled toner ...96 Clean the fuser - HP CP3525dn | Service Manual - Page 8
Step 10: Drum cleaning 127 Print cartridge ...127 Developing-roller engagement and disengagement 129 Intermediate transfer belt (ITB) unit 130 Primary-transfer-roller engagement and disengagement 131 ITB cleaning ...132 Calibration ...133 Color-misregistration control 134 Image-stabilization - HP CP3525dn | Service Manual - Page 9
locations ...167 Parts removal order ...168 Customer self repair (CSR) components 170 Print cartridges ...170 Duplex-reverse guide ...172 Toner-collection unit ...173 Formatter PCA ...175 Memory DIMM ...176 Remove the memory DIMM 176 Enable memory for Windows 177 Tray cassette ...178 Fuser ...179 - HP CP3525dn | Service Manual - Page 10
sensor 215 Remove the delivery fan, cartridge fan, and environmental sensor 215 Toner-collection sensor 220 Remove the toner-collection sensor 220 Residual-toner-feed motor 222 Remove the residual-toner-feed motor 222 Reinstall the residual-toner collection door 226 Registration density (RD - HP CP3525dn | Service Manual - Page 11
the drum motor 2 or drum motor 3 284 Fuser motor ...285 Remove the fuser motor 286 Main-drive assembly ...287 Remove the main problems Solve problems checklist ...312 Menu map ...314 Troubleshooting process ...315 Determine the problem source 315 Pre-troubleshooting checklist 315 Troubleshooting - HP CP3525dn | Service Manual - Page 12
cartridge check 323 Engine-test button 323 Paper-path test 324 Manual fuser (fixing) pressure-release sensor 329 I primary transfer-roller disengagement sensor 330 K right and front door interlock switches 332 Manual sensors test 340 Print/stop test 340 Component Paper feeder driver PCA 345 - HP CP3525dn | Service Manual - Page 13
bin 415 Jams in the fuser and transfer area 416 Jams in the duplex area (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only 419 Jams in Tray 1, Tray 2 and internal paper path 421 Jams in Tray 3 423 Change jam recovery ...424 Solve paper-handling problems ...425 Product feeds multiple - HP CP3525dn | Service Manual - Page 14
disk initialization (optional 443 NVRAM initialization 443 Product cold reset 443 8 Parts and diagrams Order parts, accessories, and supplies 446 Part numbers ...447 Accessories ...447 Print cartridges and toner collection unit 447 Memory ...447 Cables and interfaces ...448 Customer self repair - HP CP3525dn | Service Manual - Page 15
Cassette ...491 Alphabetical parts list ...493 Numerical parts list ...500 Appendix A Service and support Hewlett-Packard limited warranty statement 508 HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement 509 HP Color LaserJet Fuser Kit Limited Warranty Statement - HP CP3525dn | Service Manual - Page 16
Index ...525 xiv ENWW - HP CP3525dn | Service Manual - Page 17
Jetdirect menus 32 Table 3-1 Supported paper and print media sizes 44 Table 5-1 5-9 Fuser (fixing) components ...115 Table 5-10 Primary-transfer-roller troubleshooting checklist ...315 Table 7-2 Troubleshooting flowchart ...316 Table 7-3 Manual sensor diagnostic tests ...325 Table 7-4 Manual - HP CP3525dn | Service Manual - Page 18
fuser Table 8-13 Secondary Transfer assembly ...477 Table parts list ...500 Table B-1 Product dimensions ...516 Table B-2 Product dimensions, with all doors and trays fully opened 516 Table B-3 Power requirements ...516 Table B-4 Power consumption (average, in watts 517 Table B-5 HP Color LaserJet - HP CP3525dn | Service Manual - Page 19
Figure 5-21 Print-cartridge system ...128 Figure 5-22 Developing-roller engagement and disengagement control 129 Figure 5-23 ITB unit ...130 Figure 5-24 Three states of primary-transfer-roller engagement and disengagement 132 Figure 5-25 ITB cleaning process ...133 Figure 5-26 Toner patterns for - HP CP3525dn | Service Manual - Page 20
6-4 Parts removal order (2 of 2) ...169 Figure 6-5 Remove the print cartridge (1 of 2 170 Figure 6-6 Remove the print cartridge (2 of 2 171 Figure 6-7 Remove the duplex-reverse guide (1 of 2 172 Figure 6-8 Remove the duplex-reverse guide (2 of 2 172 Figure 6-9 Remove the toner-collection unit - HP CP3525dn | Service Manual - Page 21
transfer assembly (2 of 2 187 Reinstall the secondary transfer assembly 187 Remove the intermediate transfer belt (1 of 3 188 Remove the intermediate transfer belt (2 of 3 188 Remove the intermediate transfer belt cover (3 of 5) ...201 Remove the left cover (4 of 5) ...201 Remove the left cover - HP CP3525dn | Service Manual - Page 22
9 218 Figure 6-88 Remove the delivery fan, cartridge fan, and environmental sensor (9 of 9 219 Figure 6-89 Remove the toner-collection sensor (1 of 4 220 Figure 6-90 Remove the toner-collection sensor (2 of 4 220 Figure 6-91 Remove the toner-collection sensor (3 of 4 221 Figure 6-92 Remove the - HP CP3525dn | Service Manual - Page 23
Figure 6-115 Figure 6-116 Figure 6-117 Figure 6-118 Figure 6-119 Figure 6-120 Figure 6-121 Figure 6-122 Figure 6-123 Figure 6-124 Figure 6-125 Figure 6-126 Figure 6-127 Figure 6-128 Figure 6-129 Figure 6-130 Figure 6-131 Figure 6-132 Figure 6-133 Figure 6-134 Figure 6-135 Figure 6-136 Figure 6-137 - HP CP3525dn | Service Manual - Page 24
201 Figure 6-202 Remove the cassette-pickup assembly (3 of 3 264 Remove the laser/scanner assembly (Y/M) (1 of 12 265 Remove the laser/scanner assembly (Y/M) (2 of 12 266 Remove the laser the drum motor 2 or drum motor 3 284 Remove the fuser motor ...286 Remove the main-drive assembly (1 of 7 - HP CP3525dn | Service Manual - Page 25
7-10 Test the output-bin-full sensor ...329 Figure 7-11 Test the fuser (fixing) pressure-release sensor (1 of 2 329 Figure 7-12 Test the fuser (fixing) pressure-release sensor (2 of 2 330 Figure 7-13 Test the primary transfer-roller disengagement sensor (1 of 2 330 Figure 7-14 Test the primary - HP CP3525dn | Service Manual - Page 26
344 Figure 7-30 Paper feeder driver PCA ...345 Figure 7-31 Component print-quality troubleshooting page 362 Figure 7-46 Configuration page ...365 Figure 7-47 HP embedded Jetdirect page ...366 Figure 7-48 Embedded protocol page ...367 Figure 7-49 Sample transfer assembly ...476 Figure 8-13 Delivery - HP CP3525dn | Service Manual - Page 27
Figure 8-14 Figure 8-15 Figure 8-16 Figure 8-17 Figure 8-18 Figure 8-19 Figure 8-20 Fusing (fixing) assembly (1 of 2 480 Fusing (fixing) assembly (2 of 2 482 PCAs ...484 1 x 500 paper feeder ...486 1 x 500 paper feeder ...487 Paper feeder main body ...489 Cassette ...491 ENWW xxv - HP CP3525dn | Service Manual - Page 28
xxvi ENWW - HP CP3525dn | Service Manual - Page 29
1 Product basics ● Product comparison ● Product features ● Product view ENWW 1 - HP CP3525dn | Service Manual - Page 30
of random access memory (RAM) HP Color LaserJet CP3525n HP Color LaserJet CP3525dn HP Color LaserJet CP3525x ● 100-sheet multipurpose input tray (Tray 1) ● 250-sheet input tray (Tray 2) ● 250-sheet, face-down output bin ● Hi-speed USB 2.0 port ● HP Jetdirect embedded print server for connecting to - HP CP3525dn | Service Manual - Page 31
with 200-pin small outline dual inline memory modules (DDR2 SODIMM) that support 128 MB, 256 MB, 512 MB, or 1 GB of RAM. NOTE: If you install a 1 GB DIMM, the total amount of memory available is 1 GB. For the HP Color LaserJet CP3525dn model, you must replace the original 128 MB DIMM with a 1 GB - HP CP3525dn | Service Manual - Page 32
Languages and fonts Print cartridges Supported operating systems Connectivity Environment ● Two-sided printing: The HP Color LaserJet CP3525dn printer and HP Color LaserJet CP3525x printer support automatic two-sided printing. The other models support manual two-sided printing. ● Standard output - HP CP3525dn | Service Manual - Page 33
● User PIN authentication for stored jobs ● IPsec security ● HP encrypted High Performance EIO hard drive (optional) ● Show-me-how pages that you can print from the control panel ● Job aids for specific tasks available from www.hp.com/support/cljcp3525. ● Animations and help on the control panel - HP CP3525dn | Service Manual - Page 34
Standard output bin 3 Duplex switchback guide (HP Color LaserJet CP3525dn printer and HP Color LaserJet CP3525x printer only) 4 Control panel 5 3 (included with the HP Color LaserJet CP3525x printer) 11 Front door (access to print cartridges and toner collection unit) 6 Chapter 1 Product - HP CP3525dn | Service Manual - Page 35
Back view 1 2 3 1 Slot for a cable-type security lock 2 Interface ports 3 Power connection ENWW Product view 7 - HP CP3525dn | Service Manual - Page 36
-45 network port (not activated with the HP Color LaserJet CP3525 printer) 3 Hi-speed USB 2.0 printing port Serial number and model number location The name HP Color LaserJet CP3525 HP Color LaserJet CP3525n HP Color LaserJet CP3525dn HP Color LaserJet CP3525x Model number CC468A CC469A CC470A - HP CP3525dn | Service Manual - Page 37
2 Control panel ● Use the control panel ● Control panel menus ● Menu hierarchy ● Show Me How menu ● Retrieve job menu ● Information menu ● Paper handling menu ● Configure device menu ● Diagnostics menu ● Service menu ENWW 9 - HP CP3525dn | Service Manual - Page 38
overall product status. Control-panel layout The control panel includes a color, graphical and text display, job-control buttons, and three light-emitting display. Makes selections, resumes printing after continuable errors, and overrides a non-HP print cartridge. The Ready light indicates that - HP CP3525dn | Service Manual - Page 39
) On Product is online (able to accept and process data). Off Flashing Product is offline or is turned Product is attempting to stop off. printing and go offline. Processed data is present in Product is not processing or the product, but more data is receiving data. needed to complete the - HP CP3525dn | Service Manual - Page 40
You can perform most routine printing tasks from the computer through the printer driver or software application. This is the product's control panel. Use the control panel to access features not supported by the printer driver or software application, and to configure trays for paper size and type - HP CP3525dn | Service Manual - Page 41
for more information. ● CONFIGURE DEVICE. See Configure device menu on page 19 for more information. ● DIAGNOSTICS. See Diagnostics menu on page 40 for more information. ● SERVICE. See Service menu on page 42 for more information. ENWW Menu hierarchy 13 - HP CP3525dn | Service Manual - Page 42
JAMS LOAD TRAYS LOAD SPECIAL MEDIA PRINT BOTH SIDES SUPPORTED PAPER PRINT HELP GUIDE Explanation Provides instructions for clearing jams on the product. Provides instructions for loading and configuring trays. Provides instructions for loading special print media such as envelopes, transparencies - HP CP3525dn | Service Manual - Page 43
you select the CUSTOM menu, another setting displays where you can specify the number of copies of the job to be printed. The number of copies that were specified in the driver are multiplied by the number of copies specified on the control panel. For example, if you specified two ENWW Retrieve - HP CP3525dn | Service Manual - Page 44
Item Sub-item Options Description copies in the driver and specify two copies on the control panel, a total of four copies of the job are printed. 16 Chapter 2 Control panel ENWW - HP CP3525dn | Service Manual - Page 45
-use statistics for the printer. Prints a demonstration page. Prints color samples for different RGB values. Use the samples as a guide for matching printed colors. Prints color samples for different CMYK values. Use the samples as a guide for matching printed colors. Prints the name and directory - HP CP3525dn | Service Manual - Page 46
you print for the first time. To display: Press the Menu button , and then select the PAPER HANDLING menu. NOTE: If you have used other HP LaserJet product models, you might be accustomed to configuring Tray 1 to First mode or Cassette mode. On HP Color LaserJet CP3525 Series printers, setting - HP CP3525dn | Service Manual - Page 47
NOTE: This menu is available only on the HP Color LaserJet CP3525dn printer and the HP Color LaserJet CP3525x printer Allows you to set the product to print an A4 job on letter-size paper when no A4 paper is loaded. Setting this option to ON makes MANUAL FEED the default for jobs that do not select - HP CP3525dn | Service Manual - Page 48
area is eighty 10-pitch characters on a single line. Allows you to select to print PS error pages. Allows you to select to print PDF error pages. PCL sub-menu This menu configures settings for the printer control language. To display: Press the Menu button , select the CONFIGURE DEVICE menu, select - HP CP3525dn | Service Manual - Page 49
MEDIA SOURCE MAPPING command selects an input tray by a number that maps to the various available trays and feeders. The numbering is based on newer HP LaserJet printers with updated changes to the numbering of trays and feeders. The numbering is based on - HP CP3525dn | Service Manual - Page 50
the darkness or lightness of shadows on a printed page. Lower values represent lighter shadows on a printed page, and higher values represent darker shadows on a printed page. Restore the color settings by resetting the density values of each color. For each tray, setting the registration shifts - HP CP3525dn | Service Manual - Page 51
media type. Use this feature to return all paper type-mode settings to the factory-default settings. Allows you to optimize various print modes to address print quality issues. Use this feature to return all the settings in the OPTIMIZE menu to the factory-default values. Performs a partial product - HP CP3525dn | Service Manual - Page 52
paper size that is used to print the cleaning page. Prints a page of instructions for cleaning excess toner off the pressure roller in the fuser. NOTE: This option is available only for the HP Color LaserJet CP3525 printer and the HP Color LaserJet CP3525n printer. Allows you to create and process - HP CP3525dn | Service Manual - Page 53
This item determines whether the product's IP address is shown on the display with the Ready message. Disables or restricts color use. To use the COLOR IF ALLOWED setting, set up user permissions through the embedded Web server, HP Easy Printer Care, or Web Jetadmin. ENWW Configure device menu 25 - HP CP3525dn | Service Manual - Page 54
MANUALLY FEED PROMPT ALWAYS* UNLESS LOADED Description This menu item establishes how the product switches from color to monochrome (black and white) mode for maximum performance and for extending print cartridge specifically indicated a tray for the job. This option controls whether a manual feed - HP CP3525dn | Service Manual - Page 55
LETTERHEAD MODE ON OFF* DUPLEX BLANK PAGES AUTO* YES Description This option affects how paper is handled when printing from an Adobe PS print driver. ● ENABLED uses HP's paperhandling model. ● DISABLED uses the Adobe PS paper-handling model. This option controls whether the tray configuration - HP CP3525dn | Service Manual - Page 56
and forces the duplexer to flip the sheet of paper even if it is printed on only one side. NOTE: This option is available only for the HP Color LaserJet CP3525dn printer or the HP Color LaserJet CP3525x printer. Reduces power consumption when the product has been inactive for the selected period - HP CP3525dn | Service Manual - Page 57
automatic switching, PCL, PDF, or PS modes. ensure optimal print quality, HP recommends toner collection unit, have reached the end of their estimated life. Using this option will eventually result in unacceptable print quality. Consider having a replacement cartridge available for when the print - HP CP3525dn | Service Manual - Page 58
printing when any color supply is past the end of its estimated capacity, including the toner collection unit. This option is not recommended because of the risk of overfilling the toner collection unit, which could result in the need to service your printer. Information about the remaining toner - HP CP3525dn | Service Manual - Page 59
the product is set to STOP, the REPLACE CARTRIDGE or REPLACE SUPPLIES message is displayed when one or more color supplies reach the out condition. When the product is set to AUTOCONTINUE BLACK, the product continues printing with black toner only. Sets whether the product will attempt to - HP CP3525dn | Service Manual - Page 60
METHOD BOOTP DHCP AUTO IP MANUAL Description Use this item to print a page that lists the configuration of the following protocols: IPX/ SPX, Novell NetWare, AppleTalk, DLC/LLC. YES: Prints a page that contains the current security settings on the HP Jetdirect print server. NO: A security settings - HP CP3525dn | Service Manual - Page 61
the print server is unable to obtain an IP address from the network during a forced TCP/IP reconfiguration (for example, when manually configured set, consistent with older HP Jetdirect products. This menu appears if CONFIG METHOD is set to DHCP and a DHCP lease for the print server exists. NO: The - HP CP3525dn | Service Manual - Page 62
item to enable or disable IPv6 operation on the print server. OFF: IPv6 is disabled. ON: IPv6 is enabled. Use this item to enable and manually configure a TCP/IPv6 address. ENABLE: Choose ON to enable manual configuration, or OFF to disable manual configuration. The default is OFF. ADDRESS: Use this - HP CP3525dn | Service Manual - Page 63
PORT Type the port number used by the proxy server for client support. The port number identifies the port reserved for proxy activity on TIMEOUT IDLE TIMEOUT: The time period, in seconds, after which an idle TCP print data connection is closed (default is 270 seconds, 0 disables the timeout). IPX - HP CP3525dn | Service Manual - Page 64
TESTS YES Description Specify whether the current security settings on the print server will be saved or reset to factory defaults. YES: problems on an HP postscript level 3 emulation product. It sends a predefined PS file to the product, However, the test is paperless; the file will not print. - HP CP3525dn | Service Manual - Page 65
the test runs indefinitely until an error occurs or the product is turned off. Data gathered from the HTTP, SNMP, and Data Path tests is printed after the tests have completed. NO: Do not initiate the selected tests. YES: Initiate the selected tests. This test is used to check network communications - HP CP3525dn | Service Manual - Page 66
update the data, or NO to maintain the existing data. However, a refresh automatically occurs when the menu times out or you manually return to the main menu. The link speed and communication mode of the print server must match the network. The available settings depend on the product and installed - HP CP3525dn | Service Manual - Page 67
page buffer, remove all perishable personality data, reset the printing environment, and return all default settings to factory defaults. Resets calibration values on the formatter. Allows you to reset the fuser maintenance count after installing a new fuser. If SLEEP MODE is OFF, the product will - HP CP3525dn | Service Manual - Page 68
. Specifies whether the test page is printed from all trays or from a specific tray. Determines whether the duplexer is included in the test. NOTE: This option is available only for the HP Color LaserJet CP3525dn printer and the HP Color LaserJet CP3525x printer. 40 Chapter 2 Control panel ENWW - HP CP3525dn | Service Manual - Page 69
Item Sub-item COPIES MANUAL SENSOR TEST MANUAL SENSOR TEST 2 COMPONENT TEST A list of available components appears. PRINT/STOP TEST COLOR BAND TEST PRINT TEST PAGE COPIES Values Description 1* Determines how many pages should be sent from the specified 10 source as part of the test. - HP CP3525dn | Service Manual - Page 70
Service menu The SERVICE menu is locked and requires a personal identification number (PIN; 09352508) for access. This menu is intended for use by authorized service personnel. 42 Chapter 2 Control panel ENWW - HP CP3525dn | Service Manual - Page 71
3 Paper and print media ● Supported paper and print media sizes ● Custom paper sizes ● Supported paper and print media types ● Tray and bin capacity ● Special paper or print media guidelines ● Load trays ● Configure trays ENWW 43 - HP CP3525dn | Service Manual - Page 72
paper size and type in the printer driver before printing. Table 3-1 Supported paper and print media sizes Size and dimensions Tray x 216 mm (5.5 x 8.5 in) 4x6 101.6 x 152.4 mm (4 x 6 in) 10 x 15 cm The HP postcard media insert must be installed. 101.6 x 152.4 mm (4 x 6 in) 5x7 127 x 178 mm (5 - HP CP3525dn | Service Manual - Page 73
Table 3-1 Supported paper and print media sizes (continued) Size and dimensions Tray 1 Postcard (JIS) 100 x 148 mm (3.9 x 5.8 in) Double Postcard (JIS) 148 x 200 x 210 mm to 216 x 356 mm (5.83 x 8.27 in to 8.5 x 14 in) Tray 2 Tray 3 (optional) ENWW Supported paper and print media sizes 45 - HP CP3525dn | Service Manual - Page 74
are sizes that are within the minimum- and maximum-size guidelines for the product but are not listed in the supported paper sizes table. When using a supported custom size, specify the custom size in the print driver, and load the paper in a tray that supports custom sizes. 46 Chapter 3 Paper and - HP CP3525dn | Service Manual - Page 75
paper and print media types For a complete list of specific HP-brand paper that this product supports, go to www.hp.com/support/ cljcp3525. Paper type Plain Paper Light 60-74 g/m2 Midweight (96-110 g/m2) Heavy (111-130 g/m2) Extra Heavy (131-175 g/m2) Color Transparency Labels Letterhead Preprinted - HP CP3525dn | Service Manual - Page 76
Glossy paper Paper Tray 3 (optional) Output bin Transparencies Glossy paper Paper Transparencies Glossy paper Paper Specifications Quantity Range: 60 g/m2 (16 lb) bond to 216 g/m2 (58 lb) bond Maximum Up to 250 sheets of 75 g/m2 (20 lb) bond 48 Chapter 3 Paper and print media ENWW - HP CP3525dn | Service Manual - Page 77
media, be sure to set the type and size in your print driver to obtain the best print results. CAUTION: HP LaserJet printers use fusers to bond dry toner particles to the paper in very precise dots. HP laser paper is designed to withstand this extreme heat. Using inkjet paper not designed for this - HP CP3525dn | Service Manual - Page 78
for loading trays If you are using paper that requires a specific orientation, load it according to the information in the following type Preprinted or letterhead Image orientation Duplex mode Portrait 1-sided printing How to load paper How to load paper ALTERNATIVE LETTERHEAD ALTERNATIVE - HP CP3525dn | Service Manual - Page 79
LETTERHEAD ALTERNATIVE LETTERHEAD MODE = Off MODE = On Face down Not applicable Top edge leading into the product Short edge of the 1-sided printing envelope feeding into the product Face down Not applicable Top edge toward the back of the product NOTE: ALTERNATIVE LETTERHEAD MODE will - HP CP3525dn | Service Manual - Page 80
type Image orientation Duplex mode Preprinted or letterhead Portrait 1-sided printing How to load paper How to load paper ALTERNATIVE LETTERHEAD side of the Top edge at the left side of the tray tray 2-sided printing Face down Top edge at the left side of the tray Face down Top - HP CP3525dn | Service Manual - Page 81
of this procedure go to this Web site: www.hp.com/go/cljcp3525-loadtray1. CAUTION: To avoid jams, never add or remove paper from Tray 1 during printing. 1. Open Tray 1. 2. Fold out the tray extension to support the paper and set the side guides to the correct width. 3. Load paper in the tray - HP CP3525dn | Service Manual - Page 82
4. Make sure the stack fits under the tabs on the guides and does not exceed the load-level indicators. 5. Adjust the side guides so that they lightly touch the paper stack but do not bend it. 54 Chapter 3 Paper and print media ENWW - HP CP3525dn | Service Manual - Page 83
Print envelopes If your software does not automatically format an envelope, specify Landscape for page orientation in your software program or printer driver the Tray 2. Print these types of paper only from Tray 1. TIP: To see an animation of this procedure go to this Web site: www.hp.com/go/ - HP CP3525dn | Service Manual - Page 84
used. 3. Load paper into the tray face up. Check the paper to verify the guides lightly touch the stack, but do not bend it. NOTE: To prevent jams, do adjusted correctly, an error message might appear during printing or the paper might jam. 4. Slide the tray into the product. 56 Chapter 3 Paper and - HP CP3525dn | Service Manual - Page 85
type and size. If the configuration is not correct, follow the instructions on the control panel to change the size or type. Load the 3. Print these types of paper only from Tray 1. Load standard-sized paper into Tray 3 TIP: To see an animation of this procedure go to this Web site: www.hp.com/go - HP CP3525dn | Service Manual - Page 86
used. 3. Load paper into the tray face up. Check the paper to verify the guides lightly touch the stack, but do not bend it. NOTE: To prevent jams, do adjusted correctly, an error message might appear during printing or the paper might jam. 4. Slide the tray into the product. 58 Chapter 3 Paper and - HP CP3525dn | Service Manual - Page 87
and size. If the configuration is not correct, follow the instructions on the control panel to change the size or type. unit of measure, X DIMENSION and Y DIMENSION. 1. Slide open the tray. 2. Adjust the paper-length and paper-width guides by squeezing the adjustment latches and sliding the guides - HP CP3525dn | Service Manual - Page 88
3. Load paper into the tray face up. Check the paper to verify the guides lightly touch the stack, but do not bend it. 4. Slide the tray into the product. The control panel shows the paper type and size. 60 Chapter 3 Paper and print media ENWW - HP CP3525dn | Service Manual - Page 89
X and Y dimensions. Y X Load 4 x 6 inch (10 x 15 cm) size paper into Tray 3 TIP: To see an animation of this procedure go to this Web site: www.hp.com/go/cljcp3525-loadtray3-4x6. Loading paper size 4 x 6 inch (10 x 15 cm) into Tray 3 requires installing the - HP CP3525dn | Service Manual - Page 90
the adjustment latches and adjusting the guides to the fully opened position. 3. Fit the HP postcard media insert into Tray 3 and then slide the insert to the right until it snaps into place. 4. Load 4 x 6 inch (10 x 15 cm) paper into the tray face up. 62 Chapter 3 Paper and print media ENWW - HP CP3525dn | Service Manual - Page 91
5. Adjust the paper-length and paper-width guides by squeezing the adjustment latches and adjusting the guides to the fully closed position. 6. Slide the tray into the product. 7. The control panel prompts you to set the paper size and type. Select either 4 x 6 - HP CP3525dn | Service Manual - Page 92
and paper-width guides by squeezing the adjustment latches and adjusting the guides to the fully opened position. 2. To remove the HP postcard media insert, lift the tab, slide the insert toward the center of the tray, and then lift the insert to remove. 64 Chapter 3 Paper and print media ENWW - HP CP3525dn | Service Manual - Page 93
print job through the printer driver or a software program and the tray is not configured to match the print printing from Tray 1, and it is configured for the ANY SIZE and ANY TYPE settings. NOTE: If you have used other HP LaserJet down arrow to highlight the correct unit of measure. Then use the up - HP CP3525dn | Service Manual - Page 94
custom size, select the unit of measure, and then HP Color LaserJet CP3525 Series printers can automatically classify paper types into one of two categories: ● Non-transparency ● Transparency For more control, a specific printing in Normal mode. For more information about setting these options, see - HP CP3525dn | Service Manual - Page 95
printer driver tries to pull media when you send a print job. Source, Type, and Size settings appear in the Page Setup, Print, or Print product automatically selects a tray using the default settings. Source To print by Source select a specific tray for the product to pull from. If you select a - HP CP3525dn | Service Manual - Page 96
68 Chapter 3 Paper and print media ENWW - HP CP3525dn | Service Manual - Page 97
4 Manage and maintain the product ● Information pages ● HP Easy Printer Care ● Embedded Web server ● Use HP Web Jetadmin software ● Security features ● Manage supplies ● Clean the product ● Product updates ENWW 69 - HP CP3525dn | Service Manual - Page 98
the INFORMATION menu, and then press the OK button. 3. Press the down arrow to highlight the required information, and then press the OK button to print. For more information about the available information pages, see Information menu on page 17. 70 Chapter 4 Manage and maintain the product ENWW - HP CP3525dn | Service Manual - Page 99
the HP Easy Printer Care software: ● On the Start menu, select Programs, select Hewlett-Packard, select HP Easy Printer Care, and then click Start HP Easy Printer conditions, such as when a print cartridge has reached is estimated end of life. After you correct a problem with the product, click the - HP CP3525dn | Service Manual - Page 100
. When enabled, HP Proactive Support routinely scans your printing system to identify potential problems. Click the more info link to configure how frequently the scans occur. This page also provides information about available updates for product software, firmware, and HP printer drivers. You can - HP CP3525dn | Service Manual - Page 101
alerts for specific print jobs. Color Access Control Use this feature to permit or restrict color printing. NOTE: This item is available only for HP color products that support Color Access Control. NOTE: This item is available from the Overview and Support tabs. ENWW HP Easy Printer Care 73 - HP CP3525dn | Service Manual - Page 102
settings, and to manage printing functions from your computer instead directly connected to a computer, use the HP Easy Printer Care to view the product status instead of Guide, which is on the CD that came with the product. Open the embedded Web server by using a network connection 1. In a supported - HP CP3525dn | Service Manual - Page 103
print quality problems. For more information, contact HP Support. See Customer support Color Usage Job Log: Shows the total pages printed, the number of pages printed in color, and the number of pages printed in black only. ● Print: Allows you to send print and supplies to specific e-mail addresses. - HP CP3525dn | Service Manual - Page 104
on options for purchasing original HP supplies, such as print cartridges and paper. ● Product Support: Connects to the support site for the product, from which you can find help regarding various topics. ● Show Me How: Connects to information that demonstrates specific tasks for the product, such - HP CP3525dn | Service Manual - Page 105
ability to resolve issues before users are affected. Download this free, enhancedmanagement software at www.hp.com/go/webjetadmin. Device plug-ins can be installed into HP Web Jetadmin to provide support for specific product features. The HP Web Jetadmin software can automatically notify you when - HP CP3525dn | Service Manual - Page 106
) To protect deleted data from unauthorized access on the product hard drive, use the Secure Disk Erase feature in the HP Web Jetadmin software. This feature can securely erase print jobs from the optional hard drive. Secure Disk Erase offers the following levels of disk security: ● Non-Secure Fast - HP CP3525dn | Service Manual - Page 107
data for jobs after the erase mode has been changed. Additional Information For additional information about the HP Secure Disk Erase feature, see the HP support flyer or go to www.hp.com/go/webjetadmin. Job storage To securely print a private job, use the personal job option. The job can only be - HP CP3525dn | Service Manual - Page 108
3. Select the product. 4. In the Device Tools drop-down list, select Configure. 5. Select Security from the Configuration Categories list. 6. Type a Device Password. 7. In the Control Panel Access section, select Maximum Lock. This prevents unauthorized users from gaining access to configuration - HP CP3525dn | Service Manual - Page 109
on non-HP print cartridges Hewlett-Packard Company cannot recommend the use of non-HP print cartridges, either new or remanufactured. NOTE: Any damage caused by a non-HP print cartridge is not covered under the HP warranty and service agreements. To install a new HP print cartridge, see Change - HP CP3525dn | Service Manual - Page 110
Supply item locations 2 1 3 1 Toner collection unit 2 Print cartridges 3 Fuser Supply replacement guidelines To facilitate the on a flat, sturdy surface. For instructions on installing supplies, see the label on each supply item or see www.hp.com/go/ learnaboutsupplies. 82 Chapter 4 - HP CP3525dn | Service Manual - Page 111
. The control panel display also indicates the color of the cartridge that has reached the end of its estimated useful life (if a genuine HP cartridge is currently installed). Replacement instructions are provided on the label on the print cartridge. CAUTION: If toner gets on clothing, wipe it off - HP CP3525dn | Service Manual - Page 112
used print cartridges is on the print-cartridge box. 4. Remove the new print cartridge from its protective bag. NOTE: Be careful not to damage the memory tag on the print cartridge. 5. Grasp both sides of the print cartridge and distribute the toner by gently rocking the print cartridge. 84 - HP CP3525dn | Service Manual - Page 113
6. Remove the orange protective cover from the print cartridge. CAUTION: Avoid prolonged exposure to light. CAUTION: Do not touch the green roller. Doing so can damage the cartridge. 7. Align the print cartridge with its slot and insert the print cartridge until it clicks into place. 8. Close the - HP CP3525dn | Service Manual - Page 114
for a single use. Do not attempt to empty the toner collection unit and reuse it. Doing so could lead to toner being spilled inside the product, which could result in reduced print quality. After use, return the toner collection unit to HP's Planet Partners program for recycling. TIP: To see an - HP CP3525dn | Service Manual - Page 115
3. Place the attached blue cap over the blue opening at the top of the unit. 4. Remove the new toner collection unit from its packaging. 5. Insert the bottom of the new unit into the product first and then push the top of the unit until it clicks into place. ENWW Manage supplies 87 - HP CP3525dn | Service Manual - Page 116
6. Close the front door. NOTE: If the toner collection unit is not installed correctly, the front door does not close completely. To recycle the used toner collection unit, follow the instructions included with the new toner collection unit. 88 Chapter 4 Manage and maintain the product ENWW - HP CP3525dn | Service Manual - Page 117
Install memory You can install more memory for the product by adding a dual inline memory module (DIMM). CAUTION: Static electricity can damage DIMMs. When handling DIMMs, either wear an antistatic wrist strap, or frequently touch the surface of the DIMM antistatic package and then touch bare metal - HP CP3525dn | Service Manual - Page 118
3. Locate the thumb screws on the formatter board in the rear of the product. 4. Unscrew the thumb screws and then pull the formatter board from the product. Place the formatter board on a clean, flat, grounded surface. 5. To replace a DIMM that is currently installed, spread the latches apart on - HP CP3525dn | Service Manual - Page 119
7. Holding the DIMM by the edges, align the notch on the DIMM with the bar in the DIMM slot at an angle and firmly press the DIMM into the slot until it is fully seated. When installed correctly, the metal contacts are not visible. XOXOXOXOXO XOXOXOXOXO XOXOXOXOXO XOXOXOXOXO XOXXOOXXOOXO - HP CP3525dn | Service Manual - Page 120
Printers driver icon, and then select Properties. 3. Click the Device Settings tab. 4. Expand the area for Installable Options. 5. Select the total amount of memory installed in the product. 6. Next to Automatic Configuration, select Update Now. 7. Click OK. Install an HP Jetdirect or EIO print - HP CP3525dn | Service Manual - Page 121
NOTE: This example shows installing an HP Jetdirect print server card. 1. Turn the product off. 2. Disconnect all power and interface cables. 3. Loosen and remove the two retaining screws holding the cover for the EIO - HP CP3525dn | Service Manual - Page 122
5. Insert and tighten the retaining screws that came with the print server card. 6. Reconnect the power cable and remaining interface cables, and turn the product on. 7. Print a configuration page. An HP Jetdirect configuration page that contains network configuration and status information should - HP CP3525dn | Service Manual - Page 123
off, and then uninstall and reinstall the print server card to ensure that it is completely seated in the slot. 8. Perform one of these steps: ● Choose the correct port. See the computer or operating system documentation for instructions. ● Reinstall the software, choosing the network installation - HP CP3525dn | Service Manual - Page 124
of toner and paper accumulate inside the product. This can cause print-quality problems during printing. Cleaning the product eliminates or reduces these problems. Clean the paper path and print-cartridge areas every time that you change the print cartridge or whenever print-quality problems occur - HP CP3525dn | Service Manual - Page 125
the down arrow to highlight the PRINT CONFIGURATION option, and then press the OK button to print. The firmware datecode is listed on the product, go to www.hp.com/go/cljcp3525_firmware. This page provides instructions for downloading the new firmware version. Transfer the new firmware to the product - HP CP3525dn | Service Manual - Page 126
print to the product using the printer driver before continuing. 5. Click the Send Firmware button. The progress bar moves to the right indicating information is being transferred icon displays in the HP Easy Firmware Upgrade utility dialog box upon a successful firmware download. NOTE: Depending on - HP CP3525dn | Service Manual - Page 127
the HP Jetdirect page. The HP Jetdirect page is the second page that prints when you print the The message 200 Types set to I, Using binary mode to transfer files appears in the command window. 10. Type put rfu, type put cljcp3525.rfu. 11. The download process begins and the firmware is updated on - HP CP3525dn | Service Manual - Page 128
version you wrote down. If it is, right-click on the firmware link, and follow the instructions on the Web page to download the new firmware file. The file must be saved into the :\PROGRAM FILES \HP WEB JETADMIN\DOC\PLUGINS\HPWJA\FIRMWARE\JETDIRECT folder on the computer that is running the - HP CP3525dn | Service Manual - Page 129
NOTE: You can also use FTP or the HP Jetdirect Embedded Web Server to update the HP Jetdirect firmware. For more information, go to http://www.hp.com/go/wja_firmware. ENWW Product updates 101 - HP CP3525dn | Service Manual - Page 130
102 Chapter 4 Manage and maintain the product ENWW - HP CP3525dn | Service Manual - Page 131
5 Theory of operation ● Basic operation ● Engine-control system ● Laser/scanner system ● Image-formation system ● Pickup, feed, and delivery system ● Jam detection ● Optional paper feeder ENWW 103 - HP CP3525dn | Service Manual - Page 132
and the DC controller printed circuit assembly (PCA) ● The laser/scanner system, which forms the latent image on the photosensitive drum ● The image-formation system, which transfers a toner image onto the paper ● The media feed system, which uses a system of rollers and belts to transport the paper - HP CP3525dn | Service Manual - Page 133
each laser/scanner unit ● Warms the fuser to the correct temperature Printing From the time the first sheet of paper ● enters the paper path until the last sheet has passed through the fuser ● Forms the image on the photosensitive drums Transfers the toner to the paper ● Fuses the toner image - HP CP3525dn | Service Manual - Page 134
product functions. The engine-control system consists of the following components: ● DC controller ● High-voltage power supply ● Low-voltage power supply Figure 5-2 Engine-control system Laser/scanner system Image-formation system Media-feed system Option 106 Chapter 5 Theory of operation ENWW - HP CP3525dn | Service Manual - Page 135
of the printer. Figure 5-3 DC controller block diagram Fuser Laser/scanner Solenoids Table 5-2 Solenoids Component abbreviation SL1 SL2 SL3 SL4 Component name Primary transfer roller disengagement solenoid Duplex reverse solenoid (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only - HP CP3525dn | Service Manual - Page 136
CL1 Component name Duplex re-pickup clutch (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only) Switches Table 5-3 Switches Component abbreviation SW1, SW2 SW3 SW4 Component name 5V interlock switch 24V interlock switch Power switch Test print switch 108 Chapter 5 Theory of operation - HP CP3525dn | Service Manual - Page 137
(HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only) OHT sensor (in) OHT sensor (out) RD sensor (front) RD sensor (rear) Environmental sensor (temperature and humidity) Yellow toner-level sensor Magenta toner-level sensor Cyan toner-level sensor Black toner-level sensor Toner collection - HP CP3525dn | Service Manual - Page 138
/ magenta laser scanner Developing Drives the developing Stepping motor disengagement motor unit disengagement Duplex reverse motor (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only) Drives the duplex reverse roller and duplex feed roller Stepping motor Residual toner-feed motor - HP CP3525dn | Service Manual - Page 139
the power supply unit Intake Around the cartridges Intake Around the delivery unit Intake Speed Full/half Full/half Full/half High-voltage power supply The high-voltage power supply delivers the high-voltage biases to the following components used to transfer toner during the image-formation - HP CP3525dn | Service Manual - Page 140
drum during the imageformation process. Primary-transfer-bias generation DC positive bias transfers the latent toner image from each photosensitive drum onto the ITB. Secondary-transfer-bias generation Two DC biases, one positive and one negative, transfer the toner from the ITB onto the paper - HP CP3525dn | Service Manual - Page 141
product components use. The product has two low-voltage power-supplies for 110 Volt or 220 Volt input. Figure 5-5 Low-voltage power-supply circuit Fuser control circuit The low-voltage power supply converts the AC power into three DC voltages, which it then subdivides, as described in the following - HP CP3525dn | Service Manual - Page 142
, the low-voltage power supply interrupts power to the fuser, the high-voltage power supply, and the motors when the front door or right door open. Voltage detection The printer detects the power supply voltage that is connected to the printer. The DC controller monitors the input voltage from the - HP CP3525dn | Service Manual - Page 143
The product uses an on-demand fusing method. Figure 5-6 Fuser (fixing) components FUSER HEATING CONTROL signal Fuser control circuit FUSER TEMPERATURE signal Fuser heater safety circuit Fuser sleeve Table 5-9 Fuser (fixing) components Type of component Abbreviation Heaters H1 Thermistors - HP CP3525dn | Service Manual - Page 144
of the printing process. The DC controller sends commands to the fuser-control circuit to adjust temperatures. Figure 5-7 Fuser temperature-control circuit Fuser Fuser sleeve unit Fuser heater control circuit Fuser Fuser heater safety circuit Fuser heater safety circuit Fuser control circuit - HP CP3525dn | Service Manual - Page 145
problem. ● DC controller: When a thermistor or thermopile detects a temperature above a certain threshold, the DC controller interrupts power to the specific the power to the heaters at the prescribed temperatures, the fuser-heater safety circuit deactivates the triac-drive circuit and releases the - HP CP3525dn | Service Manual - Page 146
range when the printer is turned on or during the standby period ◦ If the current detection circuit detects an out of specified current value ● Fuser (fixing) discrepancy: The DC controller determines a fuser type mismatch when it detects an unexpected fuser (fixing) unit presence signal. The - HP CP3525dn | Service Manual - Page 147
. The formatter sends the DC controller instructions for the image of the page to be printed. The DC controller signals the lasers to emit light, and the laser beams pass through lenses and onto the of the drum so it can receive toner. Figure 5-8 Laser/scanner system ENWW Laser/scanner system 119 - HP CP3525dn | Service Manual - Page 148
failed when any of the following conditions occurs: ● Laser failure: The detected laser intensity does not match a specified value when the product initializes. ● Beam-detect (BD) failure: The BD interval is outside a specified range during printing. ● Scanner-motor failure: The scanner motor does - HP CP3525dn | Service Manual - Page 149
Image-formation system The image-formation system creates the printed image on the paper. The system consists of the laser/ scanners, print cartridges, imaging drums, ITB, and fuser. Figure 5-9 Image-formation system Fuser Y M C K Laser/scanner Laser/scanner ENWW Image-formation system 121 - HP CP3525dn | Service Manual - Page 150
Image-formation process Fuser Fusing Y M C K Functional block Latent image formation Development Transfer Fusing ITB cleaning Drum cleaning Steps 1. Pre-exposure 2. Primary charging 3. Laser-beam exposure 4. Development 5. Primary transfer 6. Secondary transfer 7. Separation 8. Fusing 9. ITB - HP CP3525dn | Service Manual - Page 151
Step 1: Pre-exposure Light from the pre-exposure LED strikes the surface of the photosensitive drum to remove any residual electrical charges from the drum surface. Figure 5-11 Pre-exposure Step 2: Primary charging The primary-charging roller contacts the photosensitive drum and charges the drum - HP CP3525dn | Service Manual - Page 152
drums have been neutralized where they have been struck by the laser beam, the toner adheres to those areas on the drums. The latent image transfer The positively charged primary-transfer rollers contact the ITB, giving the ITB a positive charge. The ITB attracts the negatively charged toner from - HP CP3525dn | Service Manual - Page 153
, cyan, and black. Figure 5-15 Primary transfer Step 6: Secondary transfer The paper acquires a positive charge from the secondary-transfer roller, and so it attracts the negatively charged toner from the surface of the ITB. The complete toner image transfers onto the paper. Figure 5-16 Secondary - HP CP3525dn | Service Manual - Page 154
causes it to separate from the ITB as the ITB bends. The static-charge eliminator removes excess charge from the paper to ensure that the toner fuses correctly. Figure 5-17 Separation Step 8: Fusing To create the permanent image, the paper passes through heated, pressurized rollers to melt the - HP CP3525dn | Service Manual - Page 155
to prepare it for the next image. The waste toner falls into the hopper in the print cartridge. Figure 5-20 Drum cleaning Print cartridge The product has four print cartridges, one for each color. Each print cartridge contains a reservoir of toner and the following components: ● Photosensitive drum - HP CP3525dn | Service Manual - Page 156
to drive the photosensitive drum, developing roller, and the primary-charging roller. Figure 5-21 Print-cartridge system The DC controller rotates the drum motor to drive the photosensitive drum, developing unit, and primary charging roller. The memory tag is a non-volatile memory chip that stores - HP CP3525dn | Service Manual - Page 157
reaches a specified time period or the cartridge runs out of toner. ● The toner level in any of the print cartridges drops below a certain level Developing-roller engagement and disengagement The product can print in full-color mode or in black-only mode. To print in black-only mode, the product - HP CP3525dn | Service Manual - Page 158
print job is black-only mode, only the black developing roller engages. If the DC controller does not detect any output from the developing home-position sensor, it determines that the developing-disengagement motor has failed. Intermediate transfer belt (ITB) unit The ITB unit accepts the toner - HP CP3525dn | Service Manual - Page 159
rollers engage with the ITB so it can receive toner from the photosensitive drums. Table 5-10 Primary-transfer-roller engagement states All rollers disengaged The home position for the ITB unit All rollers engaged The state for a full-color print job Black roller engaged The state for a black - HP CP3525dn | Service Manual - Page 160
notifies the formatter. Figure 5-24 Three states of primary-transfer-roller engagement and disengagement FUSER MOTOR CONTROL Four colors are disengaged Fuser motor Y Y M M C Four colors are engaged C K K Y Y M M C Only black is engaged C K K Y Y M M C C K K ITB cleaning The - HP CP3525dn | Service Manual - Page 161
box is full, using the toner collection-box-full sensor, and then notifies the formatter. Figure 5-25 ITB cleaning process Calibration The product calibrates itself to maintain excellent print quality. Calibration corrects color-misregistration and color-density variation. ENWW Image-formation - HP CP3525dn | Service Manual - Page 162
the product places a specific pattern of toner on the surface of the ITB. Sensors at the end of the ITB read the toner pattern to determine if adjustments are necessary. Figure 5-26 Toner patterns for calibration Color-misregistration control Internal variations in the laser/scanners can cause the - HP CP3525dn | Service Manual - Page 163
of the photosensitive drum or the toner. The DC controller adjusts the high-voltage biases to correct the problem under the following conditions: ● The sub thermistor detects a temperature that is too low when the product is turned on. ● A print cartridge is replaced. ● A specified number of pages - HP CP3525dn | Service Manual - Page 164
Y M C K Table 5-12 Switches and sensors for the pickup, feed, and delivery system Abbreviation Component SR5 Fuser (fixing) delivery sensor SR6 Delivery tray media full sensor SR7 Fuser (fixing) pressure release sensor SR8 TOP (top of page) sensor SR9 Cassette-media stack-surface sensor - HP CP3525dn | Service Manual - Page 165
the pickup, feed, and delivery system Y M C K Table 5-13 Motors and solenoids for the pickup, feed, and delivery system Abbreviation Component M2 Fuser (fixing) motor M5 Drum motor 3 M7 Lifter motor M11 Duplex reverse motor (duplex models only) M13 Pickup motor ENWW Pickup, feed, and - HP CP3525dn | Service Manual - Page 166
(duplex models only) SL2 Duplex reverse solenoid (duplex models only) SL3 Multipurpose tray pickup solenoid SL4 Cassette pickup solenoid Figure 5-29 Three main units of the pickup, feed, and delivery system Fuser/delivery block Duplex block Y M C K 138 Chapter 5 Theory of operation ENWW - HP CP3525dn | Service Manual - Page 167
Pickup-and-feed unit The pickup-and-feed unit picks an individual sheet of paper from the multipurpose tray or the cassettes, carries it through the secondary-transfer unit, and feeds it into the fuser. Figure 5-30 Y M C K ENWW Pickup, feed, and delivery system 139 - HP CP3525dn | Service Manual - Page 168
lifting mechanism lifts the paper stack so it is ready. 2. After receiving a print command from the formatter, the DC controller rotates the pickup motor, which causes pickup position. The lifting spring helps support the lifting plate depending on the media size and amount. 140 Chapter 5 - HP CP3525dn | Service Manual - Page 169
The cassette presence sensor is in the lifter drive unit. The sensor detects the cassette-presence sensor flag the cassette media-stack-surface sensor when the printer is turned on, when the cassette is installed, or as needed during a print operation. If the paper-stack surface sensor does - HP CP3525dn | Service Manual - Page 170
The DC controller lowers the lifting plate when no printing occurs to prevent media damage and pickup failure. If a print operation does not occur for a specified time, the DC controller reverses the lifter motor and moves the lifter rack until the cassette media-stack surface - HP CP3525dn | Service Manual - Page 171
separation roller. Therefore, the separation roller holds back any multiple-fed sheets, and one sheet of media is fed into the printer. Figure 5-35 Multifeed prevention Cassette pickup roller Cassette separation roller Media Lifting plate Normal feed Separation roller does not rotate Multiple - HP CP3525dn | Service Manual - Page 172
The multipurpose tray paper-presence sensor detects whether paper is in the tray. If no paper is present, the DC controller notifies the formatter. Printing does not occur until paper is in the tray. The sequence of steps for the multipurpose tray pickup operation as follows: 1. After receiving - HP CP3525dn | Service Manual - Page 173
into the fuser. 1. The paper passes through the feed rollers. The registration shutter aligns the paper correctly to prevent skewed printing. 2. The , using the OHT sensor. 4. The toner image on the ITB transfers onto the media, which feeds to the fuser. Figure 5-37 Paper-feed mechanism ENWW Pickup - HP CP3525dn | Service Manual - Page 174
Skew-feed prevention The product can straighten the paper without slowing the feed operation. 1. As the paper enters the paper path, the leading edge strikes the registration shutter, which straightens the paper. The paper does not pass through the shutter . 2. The feed rollers keep pushing the - HP CP3525dn | Service Manual - Page 175
warp increases and an image defect or paper crease occurs. ● If the fuser rollers rotate faster than the secondary transfer rollers, the paper warp decreases and the toner image fails to transfer to the paper correctly, causing color misregistration. ENWW Pickup, feed, and delivery system 147 - HP CP3525dn | Service Manual - Page 176
To prevent these problems, the loop sensors, which are located between the secondary transfer rollers and the fuser rollers, detect whether the paper is sagging or is too taut. The DC controller adjusts the speed of the fuser motor. Figure 5-40 Loop-control mechanism 148 Chapter 5 Theory of - HP CP3525dn | Service Manual - Page 177
only during printing and standby. The DC controller reverses the fuser motor. The fuser motor rotates the fuser pressure-release cam. Figure 5-41 Pressure-roller pressurization control FUSER MOTOR CONTROL FUSER PRESSURE RELEASE signal Fuser motor Fuser pressure release cam Fuser sleeve The - HP CP3525dn | Service Manual - Page 178
Duplexing unit (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only) For supported models, the duplexing unit reverses the paper and feeds it through the paper path to print the second side. The duplexing unit consists of the following components: ● Duplexing-reverse unit: Installed on top - HP CP3525dn | Service Manual - Page 179
unit after it exits the fuser. The duplexing feed procedure moves the paper through the duplexer so it can enter the product paper path to print the unit. 3. The duplexing re-pickup motor and duplexing feed motor move the paper into the duplexing repickup unit. 4. To align the paper with the toner - HP CP3525dn | Service Manual - Page 180
through the paper path and to report to the DC controller if the paper has jammed. ● Fuser (fixing) delivery sensor (SR5) ● TOP (top of page) sensor (SR8) ● Loop sensor paper at an inappropriate time. The DC controller stops the print operation and notifies the formatter. Table 5-14 Jams that the - HP CP3525dn | Service Manual - Page 181
edge. Wrapping jam After detecting the leading edge of the paper, the fuser delivery paper-feed sensor detects the absence of paper, and it has a specified period after the media reverse operation starts in the duplex reverse unit. Duplexing re-pickup jam 2 The TOP sensor does not detect the - HP CP3525dn | Service Manual - Page 182
picks up the print media and feeds it to the printer. NOTE: These optional trays are not identical to the main cassette (Tray 2). Figure 5-44 Optional paper feeder Y M C K The paper-deck drivers contain a microcomputer and control the paper feeder. The paper-deck drivers receive commands from - HP CP3525dn | Service Manual - Page 183
Figure 5-45 Signals for the paper feeder The input trays contain several motors, solenoids, sensors, and switches, as described in the following table. Table 5-15 Electrical components for the paper feeder Component type Abbreviation Component name Motors M1 Paper feeder motor M2 Paper - HP CP3525dn | Service Manual - Page 184
Paper-feeder pickup and feed operation The paper feeder picks up one sheet from the paper-feeder cassette and feeds it to the product. Figure 5-46 Paper-feeder pickup and feed operation 156 Chapter 5 Theory of operation ENWW - HP CP3525dn | Service Manual - Page 185
The paper-feeder cassette media-size switch (SW1) detects the size of paper loaded in the paper-feeder cassette. The paper-feeder driver determines the media size by monitoring the combination of the switches. Figure 5-47 Paper size detection Paper size Universal ENWW Paper-feeder cassette - HP CP3525dn | Service Manual - Page 186
a specified height to maintain stable media feeding. The paper-feeder driver controls the paper-feeder lifter motor (M2) and monitors the the printer is turned on, when the printer recovers from sleep mode, when the paper-feeder cassette is installed or as needed during a print operation. - HP CP3525dn | Service Manual - Page 187
lifter motor again when paper-feeder media stack surface 1 detects that the media surface is lowered during a print operation. Figure 5-48 Paper-feeder cassette lift The paper-feeder driver notifies the formatter if either of the paper-feeder media-stack surface sensors fails to detect the stack - HP CP3525dn | Service Manual - Page 188
paper-feeder separation roller, and pushes the extra sheets back to the paper-feeder cassette. That way, only the top sheet is fed to the printer. Figure 5-49 Paper-feeder multiple feed prevention No-load Normal feed Multiple-feed 160 Chapter 5 Theory of operation Rotational force for paper-feeder - HP CP3525dn | Service Manual - Page 189
identifies a jam if the sensor detects paper at a specified timing stored in the paper-feeder driver. The paper-feeder driver stops printing and notifies the formatter through the DC controller of the jam. The paper feeder detects the following jams: ● Pickup delay jam: The paper-feeder media- - HP CP3525dn | Service Manual - Page 190
162 Chapter 5 Theory of operation ENWW - HP CP3525dn | Service Manual - Page 191
● Introduction ● Removal and replacement strategy ● Electrostatic discharge ● Required tools ● Before performing service ● After performing service ● Post-service test ● DC controller connector locations ● Parts removal order ● Customer self repair (CSR) components ● External panels, covers, and - HP CP3525dn | Service Manual - Page 192
HP does not support repairing individual subassemblies or troubleshooting to the component level. Note the length, diameter, color guides troubleshooting. However, disconnect the power supply during parts removal. Never operate or service the product with the protective cover removed from the laser - HP CP3525dn | Service Manual - Page 193
ESD workstation, mat, or strap is not available, ground yourself by touching the sheet-metal chassis before touching an ESD-sensitive part. ● Remove the print cartridges. See Print cartridges on page 170. ● Remove the tray cassette or cassettes. See Tray cassette on page 178. ● If the optional paper - HP CP3525dn | Service Manual - Page 194
● Plug in the power cable. ● Reinstall the print cartridges. ● Reinstall the tray cassette or cassettes. ● If the optional paper feeder was installed, place the product on the feeder. WARNING! The product is heavy. Do - HP CP3525dn | Service Manual - Page 195
sensor J120: drum motor 1 and drum motor 2 J137: toner collection unit (TCU) full, TCU motor, toner level detection J110: YM laser J121: drum motor 3, drum position 1,2,3 J138: 24 v to HVPS lower J111: CK laser J122: OHT out J139: fuser sensors J112: pre-exposure LEDs (front) J123: pressure - HP CP3525dn | Service Manual - Page 196
Parts removal order Figure 6-3 Parts removal order (1 of 2) 168 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 197
Figure 6-4 Parts removal order (2 of 2) ENWW Parts removal order 169 - HP CP3525dn | Service Manual - Page 198
repair (CSR) components Print cartridges CAUTION: If toner gets on your clothing, wipe it off with a dry cloth and wash clothing in cold water. Hot water sets toner into fabric. 1. Open the front door. Make sure that the door is completely open. Figure 6-5 Remove the print cartridge (1 of 2) 170 - HP CP3525dn | Service Manual - Page 199
green roller. Doing so can damage the cartridge. Do not expose the cartridge to strong light. Cover the cartridge with a sheet of paper to protect it from light. Reinstallation tip Align the print cartridge with its slot and insert the print cartridge until it clicks into place. Figure 6-6 Remove - HP CP3525dn | Service Manual - Page 200
Duplex-reverse guide 1. Grasp the duplex-reverse guide and pull it away from the product to release it. Figure 6-7 Remove the duplex-reverse guide (1 of 2) 2. Remove the guide. Figure 6-8 Remove the duplex-reverse guide (2 of 2) 172 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 201
Toner-collection unit NOTE: The toner-collection unit is designed for a single use. Do not try to empty the toner-collection unit and reuse it. Doing so could cause toner to spill inside the product and result in reduced print quality. For recycling information, see the product user guide. 1. Open - HP CP3525dn | Service Manual - Page 202
3. To prevent toner spills, place the blue cap (callout 1) over the blue opening at the top of the unit (callout 2). Figure 6-11 Remove the toner-collection unit (3 of 4) 2 1 Figure 6-12 Remove the toner-collection unit (4 of 4) 174 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 203
Formatter PCA CAUTION: ESD sensitive component. 1. Turn the product off and disconnect the power and interface cable or interface cables. 2. Unscrew the formatter thumb screws, and then firmly pull the formatter from the product. Place the formatter on a clean, flat, grounded surface. Figure 6- - HP CP3525dn | Service Manual - Page 204
Memory DIMM Before proceeding, remove the following components: ● Formatter PCA. See Formatter PCA on page 175. Remove the memory DIMM CAUTION: ESD sensitive component. NOTE: See Enable memory for Windows on page 177 after installing a new memory DIMM. 1. Place the formatter on a clean, flat, - HP CP3525dn | Service Manual - Page 205
-orWindows Vista: Click Start, click Control Panel, and then in the category for Hardware and Sound click Printer. 2. Right-click the driver icon, and then select Properties. 3. Click the Device Settings tab. 4. Expand the area for Installable Options. 5. Select the total amount of memory installed - HP CP3525dn | Service Manual - Page 206
Tray cassette NOTE: Use this procedure to remove the Tray 2 or optional Tray 3 cassette. 1. Pull the tray straight out of the product until it stops. Figure 6-16 Remove the tray cassette (1 of 2) 2. Carefully lift up on the tray to release it, and then remove the tray. Figure 6-17 Remove the tray - HP CP3525dn | Service Manual - Page 207
might be hot. Allow enough time after turning off the product power for the fuser to cool. 1. Open the right-door assembly. Figure 6-18 Remove the fuser (1 of 2) 2. Grasp the handles and squeeze the blue release levers. Pull the fuser straight out of the product to remove it. Figure 6-19 Remove the - HP CP3525dn | Service Manual - Page 208
(Tray 2) CAUTION: Do not touch the spongy roller surface unless you are replacing the roller. Skin oils on the roller can cause paper pickup problems. 1. Look up into the Tray 2 cavity (where the cassette would be installed), and pull down to release the blue roller-locking lever. Reinstallation tip - HP CP3525dn | Service Manual - Page 209
3. Rotate the roller shaft down and away from the product, and then slide the roller toward the rear of the product to release the front of the roller shaft. Figure 6-22 Remove the pickup roller (Tray 2) (3 of 4) 4. Remove the pickup roller. Reinstallation tip Make sure that the roller is orientated - HP CP3525dn | Service Manual - Page 210
rollers (Tray 3) CAUTION: Do not touch the spongy roller surface unless you are replacing the roller. Skin oils on the roller can cause paper pickup problems. 1. Locate the Tray 3 pickup and feed rollers. TIP: The feeder is shown front side up in this procedure for clarity. You do not have to - HP CP3525dn | Service Manual - Page 211
the spongy roller surface unless you are replacing the roller. Skin oils on the roller can cause paper pickup problems. NOTE: Remove the Tray 2 cassette if not already removed for service. See Tray cassette on page 178. Remove two screws (callout 1), and then remove the separation roller assembly - HP CP3525dn | Service Manual - Page 212
oils on the roller can cause image quality problems. 1. Open the right-door assembly. Figure 6-27 Remove the transfer roller (1 of 3) 2. Use the blue lever (callout 1) to lower the secondary transfer assembly. Figure 6-28 Remove the transfer roller (2 of 3) 1 184 Chapter 6 Removal and replacement - HP CP3525dn | Service Manual - Page 213
3. Grasp the roller shaft collars, and lift the transfer roller off of the product. Figure 6-29 Remove the transfer roller (3 of 3) Reinstall the transfer roller When you reinstall the transfer roller, make sure that the pins on the shaft collars (callout 1) align with the holes in the mounting - HP CP3525dn | Service Manual - Page 214
roller. 1. Open the right-door assembly. 2. Use the blue lever (callout 1) to lower the secondary transfer assembly. Figure 6-31 Remove the transfer roller (2 of 3) 1 3. Push the pin on the release-lever side of the assembly toward the inside of the product to release it, and then lift - HP CP3525dn | Service Manual - Page 215
to remove it. Figure 6-33 Remove the secondary transfer assembly (2 of 2) Reinstall the secondary transfer assembly Press and hold down the blue release lever when you reinstall the assembly. Figure 6-34 Reinstall the secondary transfer assembly ENWW Customer self repair (CSR) components 187 - HP CP3525dn | Service Manual - Page 216
on the belt can cause printquality problems. Always place the ITB on a flat surface in a safe and protected location. 1. Open the right-door assembly. 2. Use the blue lever (callout 1) to lower the secondary transfer assembly. Figure 6-35 Remove the intermediate transfer belt (1 of 3) 1 3. Grasp - HP CP3525dn | Service Manual - Page 217
handling the ITB so that it is not damaged. Always place the ITB in a safe and protected location. Figure 6-37 Remove the intermediate transfer belt (3 of 3) Reinstallation tip If you are installing a replacement ITB, make sure that you remove all of the packing tape (callout 1) and the protective - HP CP3525dn | Service Manual - Page 218
Right door (optional paper feeder) 1. Open the right door. Figure 6-38 Remove the right door; optional paper feeder (1 of 3) 2. Release one tab (callout 1), and then slide the stopper toward the right side of the product to remove it. Figure 6-39 Remove the right door; optional paper feeder (2 of 3) - HP CP3525dn | Service Manual - Page 219
3. Support the door, and then release the door-retainer arm at the bottom of the door. Raise the door to release the lower hinge pin, and then remove the door. Figure 6-40 Remove the right door; optional paper feeder (3 of 3) ENWW Customer self repair (CSR) components 191 - HP CP3525dn | Service Manual - Page 220
External panels, covers, and doors Identification and location Figure 6-41 External panels, covers, and doors; identification and location 1 2 3 11 4 10 9 5 8 7 6 Item 1 2 3 4 5 6 Description Front-top cover (see Front-top cover on page 208) Item 7 Rear-top cover (see Rear-top cover 8 - HP CP3525dn | Service Manual - Page 221
Front-door assembly 1. Open the front door. Figure 6-42 Remove the front-door assembly (1 of 2) 2. Remove two screws (callout 1), and then remove the front-door assembly. NOTE: A small sheet-metal bracket on the left side of the door is not captive. Do not lose the bracket when you remove the screw. - HP CP3525dn | Service Manual - Page 222
Right-door assembly 1. Open the right-door assembly Figure 6-44 Remove the right-door assembly (1 of 8) 2. Close the secondary transfer assembly. Figure 6-45 Remove the right-door assembly (2 of 8) 194 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 223
3. Remove three screws (callout 1). Figure 6-46 Remove the right-door assembly (3 of 8) 1 4. Carefully release one link arm. Figure 6-47 Remove the right-door assembly (4 of 8) ENWW External panels, covers, and doors 195 - HP CP3525dn | Service Manual - Page 224
then remove the cover (callout 3). Figure 6-48 Remove the right-door assembly (5 of 8) 3 2 6. Disconnect two connectors (callout 4), and then release the wire harness from the guide (callout 5). TIP: It is easier to disconnect the lower connector if you first remove the wire harnesses from the - HP CP3525dn | Service Manual - Page 225
7. Remove two screws (callout 6). Figure 6-50 Remove the right-door assembly (7 of 8) 6 8. Remove the right-door assembly. Figure 6-51 Remove the right-door assembly (8 of 8) ENWW External panels, covers, and doors 197 - HP CP3525dn | Service Manual - Page 226
Right-rear cover 1. Open the right-door assembly. Figure 6-52 Remove the right-rear cover (1 of 3) 2. Remove two screws (callout 1) and release one tab (callout 2). Figure 6-53 Remove the right-rear cover (2 of 3) 2 1 198 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 227
3. Rotate the bottom of the cover away from the product, and then remove the cover. Figure 6-54 Remove the right-rear cover (3 of 3) ENWW External panels, covers, and doors 199 - HP CP3525dn | Service Manual - Page 228
Left cover 1. Remove four screws (callout 1). Figure 6-55 Remove the left cover (1 of 5) 1 2. Release the rear edge of the cover, and slightly separate the cover from the product. Figure 6-56 Remove the left cover (2 of 5) 200 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 229
do not damage the tab at the bottom-front edge of the cover. See callout 2 in Figure 6-57 Remove the left cover (3 of 5) on page 201. Figure 6-58 Remove the left cover (4 of 5) 2 1 ENWW External panels, covers, and doors - HP CP3525dn | Service Manual - Page 230
5. Slide the cover toward the rear of the product and rotate it away from the product and then remove the cover. Figure 6-59 Remove the left cover (5 of 5) 202 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 231
Control-panel assembly 1. Open the front door and the right door. 2. Remove one screw (callout 1). Figure 6-60 Remove the control-panel assembly (1 of 4) 1 3. Remove one screw (callout 2). Figure 6-61 Remove the control-panel assembly (2 of 4) 2 ENWW External panels, covers, and doors 203 - HP CP3525dn | Service Manual - Page 232
4. Lift the control-panel assembly up, and then rotate the top of the assembly away from the product. CAUTION: The control-panel assembly is attached to the product by the wire-harness connector. Figure 6-62 Remove the control-panel assembly (3 of 4) 5. Disconnect one connector (callout 3), and - HP CP3525dn | Service Manual - Page 233
Right-front cover Before proceeding, remove the following components: ● Control-panel assembly. See Control-panel assembly on page 203. Remove the right-front cover NOTE: Be careful. When removing the cover, do not dislodge the power button. If the button is dislodged, see Reinstall the power button - HP CP3525dn | Service Manual - Page 234
3. Before you proceed, take note of the tab locations at the bottom of the cover. Figure 6-66 Remove the right-front cover (3 of 5) 4. Pull down on the cover to release three tabs (callout 3). TIP: It might be easier if you position the product at the edge of the work surface so that there is a - HP CP3525dn | Service Manual - Page 235
5. Rotate the bottom of the cover away from the product, and then pull down on the cover to remove it. Figure 6-68 Remove the right-front cover (5 of 5) Reinstall the power button Snap the power button into the holders on the cover. Make sure that the spring is correctly installed. Figure 6-69 - HP CP3525dn | Service Manual - Page 236
Front-top cover Before proceeding, remove the following components: ● Left cover. See Left cover on page 200. ● Control-panel assembly. See Control-panel assembly on page 203. Remove the front-top cover 1. Remove one screw (callout 1). Figure 6-70 Remove the front-top cover (1 of 2) 1 2. Slide the - HP CP3525dn | Service Manual - Page 237
Rear cover and upper-rear cover Before proceeding, remove the following components: ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. Remove the rear cover and upper-rear cover 1. Remove eight screws (callout 1). Figure 6-72 Remove the rear cover and - HP CP3525dn | Service Manual - Page 238
3. Slide the upper-rear cover toward the left to release it, and then separate the upper-rear cover from the rear cover. Figure 6-74 Remove the rear cover and upper-rear cover (3 of 4) 2 1 Figure 6-75 Remove the rear cover and upper-rear cover (4 of 4) 210 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 239
Rear-top cover Before proceeding, remove the following components: ● Left cover. See Left cover on page 200. ● Control-panel assembly. See Control-panel assembly on page 203. ● Front-top cover. See Front-top cover on page 208. ● Rear cover and rear-upper cover. See Rear cover and upper-rear cover on - HP CP3525dn | Service Manual - Page 240
2. Slide the cover toward the left side of the product to release it, and then remove the cover. Figure 6-77 Remove the rear-top cover (2 of 2) 212 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 241
listed at the beginning of a procedure before proceeding to service the product. Pickup roller (Tray 1) CAUTION: Do not touch the spongy roller surface unless you are replacing the roller. Skin oils on the roller can cause paper pickup problems. 1. Open Tray 1, release two tabs (callout 1), and then - HP CP3525dn | Service Manual - Page 242
the roller body away from the product to remove it. TIP: It might be easier to release the Tray 1 pickup-roller solenoid plate, and then manually rotate the roller into the correct position to remove the roller. Figure 6-79 Remove the pickup roller (Tray 1) (2 of 2) 214 Chapter 6 Removal and - HP CP3525dn | Service Manual - Page 243
fan, and environmental sensor Before proceeding, remove the following components: ● Left cover. See Left cover on page 200. Remove the delivery fan, cartridge fan, and environmental sensor 1. Remove five screws (callout 1), and then remove the sheet-metal plate (callout 2). Figure 6-80 Remove the - HP CP3525dn | Service Manual - Page 244
-fan assembly toward the power-supply side of the product to release it. Figure 6-82 Remove the delivery fan, cartridge fan, and environmental sensor (3 of 9) 4 4. Pull the assembly slightly out of the product, disconnect two connectors (callout 5), and then to remove the assembly. Figure 6-83 - HP CP3525dn | Service Manual - Page 245
cover (callout 7). Figure 6-84 Remove the delivery fan, cartridge fan, and environmental sensor (5 of 9) 7 6 6. Disconnect two connectors (callout 8), and then remove the fans (callout 9). Figure 6-85 Remove the delivery fan, cartridge fan, and environmental sensor (6 of 9) 9 8 ENWW Internal - HP CP3525dn | Service Manual - Page 246
7. Remove the antistatic foam (callout 10). Figure 6-86 Remove the delivery fan, cartridge fan, and environmental sensor (7 of 9) 10 8. Release one tab (callout 11). Figure 6-87 Remove the delivery fan, cartridge fan, and environmental sensor (8 of 9) 11 218 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 247
9. Disconnect one connector (callout 12), and then remove the environmental sensor. CAUTION: ESD-sensitive part. Figure 6-88 Remove the delivery fan, cartridge fan, and environmental sensor (9 of 9) 12 ENWW Internal assemblies 219 - HP CP3525dn | Service Manual - Page 248
sensor Before proceeding, remove the following components: ● Toner-collection unit. See Toner-collection unit on page 173. ● Left cover. See Left cover on page 200. Remove the toner-collection sensor 1. Remove five screws (callout 1), and then remove the sheet-metal plate (callout 2). Figure - HP CP3525dn | Service Manual - Page 249
, make sure that the tab (callout 5) on the sensor body completely engages the slot in the product chassis. Figure 6-91 Remove the toner-collection sensor (3 of 4) 4 5 4. Remove the toner-collection sensor. Figure 6-92 Remove the toner-collection sensor (4 of 4) ENWW Internal assemblies 221 - HP CP3525dn | Service Manual - Page 250
proceeding, remove the following components: ● Toner-collection unit. See Toner-collection unit on page 173. ● Intermediate transfer belt (ITB). See Intermediate transfer belt (ITB) on page 188. ● Left cover. See Left cover on page 200. Remove the residual-toner-feed motor NOTE: Be careful. Do - HP CP3525dn | Service Manual - Page 251
2. Remove the cover. Figure 6-94 Remove the residual-toner-feed motor (2 of 7) 3. Disconnect one connector (callout 3). Figure 6-95 Remove the residual-toner-feed motor (3 of 7) 3 ENWW Internal assemblies 223 - HP CP3525dn | Service Manual - Page 252
4. Support the assembly, and then remove two screws (callout 4). Figure 6-96 Remove the residual-toner-feed motor (4 of 7) 4 5. Be careful. Do not dislodge the residual-toner collection door when you remove the assembly. If the door becomes dislodged, see Reinstall the residual-toner collection door - HP CP3525dn | Service Manual - Page 253
6. Push the assembly into the product to release it. Figure 6-98 Remove the residual-toner-feed motor (6 of 7) 7. Remove the motor. Figure 6-99 Remove the residual-toner-feed motor (7 of 7) ENWW Internal assemblies 225 - HP CP3525dn | Service Manual - Page 254
Reinstall the residual-toner collection door Snap the residual-toner collection door into the holders on the assembly. Make sure that the spring is correctly installed. Figure 6-100 Reinstall the residual-toner collection door 226 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 255
Registration density (RD) sensor assembly Before proceeding, remove the following components: ● Secondary transfer assembly. See Secondary transfer assembly on page 186. ● Intermediate transfer belt (ITB). See Intermediate transfer belt (ITB) on page 188. Remove the RD sensor assembly 1. Remove two - HP CP3525dn | Service Manual - Page 256
3. Carefully separate the assembly from the product. The assembly wire harnesses are still attached to the product. CAUTION: Do not damage the shutter as it passes through the chassis. Figure 6-103 Remove the RD sensor assembly (3 of 6) 4. Disconnect two connectors (callout 2) on the back side of - HP CP3525dn | Service Manual - Page 257
5. Push in on the locking tab to release the retainer (callout 3), and then separate the retainer from the assembly. NOTE: The retainer remains attached to the wire harness, and disengages from the assembly. Figure 6-105 Remove the RD sensor assembly (5 of 6) 3 6. Remove the assembly. Figure 6-106 - HP CP3525dn | Service Manual - Page 258
-supply fan. Remove the power-supply fan and fan duct 1. Disconnect one connector (callout 1; J119) and release the wire harnesses from the guide (callout 2). NOTE: To locate DC controller connector locations, see DC controller connector locations on page 167. Figure 6-107 Remove the power-supply - HP CP3525dn | Service Manual - Page 259
Remove the power-supply fan (2 of 4) 3 3. To remove the fan and fan duct: Remove one screw (callout 4), and then release the wire harnesses from the guides on the fan duct. Figure 6-109 Remove the power-supply fan (3 of 4) 4 ENWW Internal assemblies 231 - HP CP3525dn | Service Manual - Page 260
4. To remove the fan and fan duct: Release one tab (callout 5), and then remove the fan and fan duct (callout 6). Figure 6-110 Remove the power-supply fan (4 of 4) 6 5 232 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 261
Registration assembly Before proceeding, remove the following components: ● Secondary transfer assembly. See Secondary transfer assembly on page 186. ● Intermediate transfer belt (ITB). See Intermediate transfer belt (ITB) on page 188. ● Right-rear cover. See Right-rear cover on page 198. ● Left - HP CP3525dn | Service Manual - Page 262
Figure 6-112 Remove the registration assembly (2 of 8) 3. Release two green latches (callout 2), and then lower the feed guide. Reinstallation tip Make sure that the feed guide snaps into the closed position when you reinstall the registration assembly. Figure 6-113 Remove the registration assembly - HP CP3525dn | Service Manual - Page 263
4. Remove three screws (callout 3). Figure 6-114 Remove the registration assembly (4 of 8) 3 5. Separate the assembly from the product, release one tab (callout 4), and then remove the cover (callout 5). CAUTION: The assembly is still attached to the product by the wire harnesses. Figure 6-115 - HP CP3525dn | Service Manual - Page 264
6. Disconnect one connector (callout 6), and then release the wire harness from the retainer. Figure 6-116 Remove the registration assembly (6 of 8) 6 7. Disconnect three connectors (callout 7) on the back side of the assembly, and then release the wires from the retainers. Figure 6-117 Remove the - HP CP3525dn | Service Manual - Page 265
8. Remove the assembly. Reinstallation tip When you reinstall the registration assembly, make sure that it is correctly positioned in the product. The tabs on the assembly must fit into the slots in the product chassis and the assembly should fit securely up against the product chassis. Figure 6-118 - HP CP3525dn | Service Manual - Page 266
result in severe damage to that product and cause it to be unusable. HP recommends that if you remove and replace the ICB, you should destroy the not accidentally be installed in a different product. CAUTION: ESD-sensitive part. 1. Disconnect one connector (callout 1; J105), and then remove one - HP CP3525dn | Service Manual - Page 267
2. Carefully rotate and slide the ICB up and away from the chassis, and then disconnect two connectors (callout 3). Figure 6-120 Remove the ICB (2 of 3) 3 3. Remove the ICB. Figure 6-121 Remove the ICB (3 of 3) ENWW Internal assemblies 239 - HP CP3525dn | Service Manual - Page 268
skip the third step and leave the DC controller attached to the sheet-metal tray. Remove the DC controller PCA CAUTION: ESD-sensitive part. 1. Remove one screw (callout 1), and then remove the sheet-metal bracket (callout 2). Figure 6-122 Remove the DC controller PCA and tray (1 of 4) 2 1 240 - HP CP3525dn | Service Manual - Page 269
2. Disconnect all the connectors. Reinstallation tip The connector locations J124, J133, and J134 are not used. Figure 6-123 Remove the DC controller PCA and tray (2 of 4) 3. Remove four screws (callout 3), and then remove the DC controller PCA. Figure 6-124 Remove the DC controller PCA and tray (3 - HP CP3525dn | Service Manual - Page 270
4. If necessary, remove four screws (callout 4), remove the wire guide (callout 5), and then remove the sheet-metal tray. Figure 6-125 Remove the DC controller PCA and tray (4 of 4) 4 5 242 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 271
as an assembly. You can then remove the formatter cage from the LVPS. Remove the low-voltage power supply CAUTION: ESD-sensitive part. 1. Disconnect six connectors (callout 1; J100, J101, J143 on the DC controller PCA). NOTE: To locate DC controller connector locations, see DC controller - HP CP3525dn | Service Manual - Page 272
2. Push in on the locking tab to release the retainer (callout 2), and then separate the retainer from the assembly. NOTE: The retainer remains attached to the wire harness, and disengages from the assembly. Figure 6-127 Remove the low-voltage power supply (2 of 8) 2 3. Remove three screws (callout - HP CP3525dn | Service Manual - Page 273
4. Remove five screws (callout 5). NOTE: The illustration below shows the ICB removed. Figure 6-129 Remove the low-voltage power supply (4 of 8) 5 5. Remove three screws (callout 6). Figure 6-130 Remove the low-voltage power supply (5 of 8) 6 ENWW Internal assemblies 245 - HP CP3525dn | Service Manual - Page 274
6. Rotate the formatter cage away from the top of the product. Figure 6-131 Remove the low-voltage power supply (6 of 8) 7. Remove the assembly. Figure 6-132 Remove the low-voltage power supply (7 of 8) 246 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 275
8. Remove four screws (callout 7), and then separate the formatter cage from the low-voltage power supply. NOTE: If you are removing the power supply for internal product access, you can leave the formatter cage installed on the power supply chassis. Figure 6-133 Remove the low-voltage power supply - HP CP3525dn | Service Manual - Page 276
-voltage power supply. See Low-voltage power supply on page 243. Remove the high-voltage power supply lower CAUTION: ESD-sensitive part. 1. Disconnect two connectors (callout 1), and then remove three screws (callout 2). Figure 6-134 Remove the high-voltage power supply lower (1 of 4) 2 1 248 - HP CP3525dn | Service Manual - Page 277
2. Use a small flat blade screwdriver to carefully remove three locking clips (callout 3). CAUTION: Do not damage the PCA with the screwdriver. Figure 6-135 Remove the high-voltage power supply lower (2 of 4) 3 3. Disconnect one connector (callout 4; J114), and then release five clips (callout 5). - HP CP3525dn | Service Manual - Page 278
4. Rotate the top of the power supply away from the chassis, and then disconnect one connector (callout 6). Remove the power supply Figure 6-137 Remove the high-voltage power supply lower (4 of 4) 6 Reinstall the high-voltage power supply lower When you reinstall the power supply, look through the - HP CP3525dn | Service Manual - Page 279
Developing-disengagement motor Before proceeding, remove the following components: ● Formatter. See Formatter PCA on page 175. ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. ● Rear cover and upper-rear cover. See Rear cover and upper-rear cover on - HP CP3525dn | Service Manual - Page 280
2. Remove the motor. Figure 6-140 Remove the developing-disengagement motor (2 of 2) 252 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 281
Pickup motor Before proceeding, remove the following components: ● Formatter. See Formatter PCA on page 175. ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. ● Rear cover and upper-rear cover. See Rear cover and upper-rear cover on page 209. NOTE: It is - HP CP3525dn | Service Manual - Page 282
Lifter-drive assembly Before proceeding, remove the following components: ● Formatter. See Formatter PCA on page 175. ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. ● Rear cover and upper-rear cover. See Rear cover and upper-rear cover on page 209. - HP CP3525dn | Service Manual - Page 283
2. Remove five screws (callout 2), and then remove the assembly. Figure 6-143 Remove the lifter-drive assembly (2 of 2) 2 ENWW Internal assemblies 255 - HP CP3525dn | Service Manual - Page 284
Cassette-pickup drive assembly Before proceeding, remove the following components: ● Formatter. See Formatter PCA on page 175. ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. ● Rear cover and upper-rear cover. See Rear cover and upper-rear cover on - HP CP3525dn | Service Manual - Page 285
assembly (2 of 10) 33 3. Disconnect one connector (callout 4; J119), remove one screw (callout 5), and then release the wire harness from the guides. NOTE: To locate DC controller connector locations, see DC controller connector locations on page 167. Figure 6-146 Remove the cassette-pickup drive - HP CP3525dn | Service Manual - Page 286
10) 7 6 5. Disconnect five connectors (callout 8; J110, J111 on the DC controller PCA), release the FFCs from the guide (callout 9), and then release the wire harnesses from the guides. NOTE: To locate DC controller connector locations, see DC controller connector locations on page 167. Figure 6-148 - HP CP3525dn | Service Manual - Page 287
6. Release one tab (callout 10), and then remove the guide. Figure 6-149 Remove the cassette-pickup drive assembly (6 of 10) 10 7. Release one tab (callout 11), and then remove the guide. Figure 6-150 Remove the cassette-pickup drive assembly (7 of 10) 11 ENWW Internal assemblies 259 - HP CP3525dn | Service Manual - Page 288
8. Remove two screws (callout 12), and then remove the high-voltage bracket (callout 13). Figure 6-151 Remove the cassette-pickup drive assembly (8 of 10) 12 13 9. Remove three screws (callout 14). Figure 6-152 Remove the cassette-pickup drive assembly (9 of 10) 14 260 Chapter 6 Removal and - HP CP3525dn | Service Manual - Page 289
10. Carefully remove the assembly. CAUTION: The gears, arm, and spring on the assembly are not captive. Use your finger to secure the arm and spring as you remove the assembly. If the gears, arm, or spring become dislodged, see Reinstall the cassette-pickup drive assembly on page 261. Figure 6-153 - HP CP3525dn | Service Manual - Page 290
2. Make sure that the spring (callout 2) is correctly installed. Figure 6-155 Reinstall the cassette-pickup drive assembly (2 of 3) 2 3. Make sure that the gears, arm, and spring are correctly installed. Figure 6-156 Reinstall the cassette-pickup drive assembly (3 of 3) 262 Chapter 6 Removal and - HP CP3525dn | Service Manual - Page 291
Cassette-pickup assembly Before proceeding, remove the following components: ● Formatter. See Formatter PCA on page 175. ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. ● Rear cover and upper-rear cover. See Rear cover and upper-rear cover on page 209. - HP CP3525dn | Service Manual - Page 292
2. Remove two screws (callout 3). Figure 6-158 Remove the cassette-pickup assembly (2 of 3) 3 3. Remove the assembly. Figure 6-159 Remove the cassette-pickup assembly (3 of 3) 264 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 293
Laser/scanner assembly (Y/M) Before proceeding, remove the following components: ● Toner collection unit. See Toner-collection unit on page to separate the upper-rear cover from the rear cover to remove the laser/scanner assembly (Y/M). ● Interconnect board (ICB). See Interconnect board (ICB) on - HP CP3525dn | Service Manual - Page 294
3), and then release the wire harnesses from the guide (callout 4). Figure 6-161 Remove the laser/scanner assembly (Y/M) (2 of 12) 4 3 3. Release one tab (callout 5), and then remove the guide (callout 6). Figure 6-162 Remove the laser/scanner assembly (Y/M) (3 of 12) 5 6 266 Chapter 6 Removal and - HP CP3525dn | Service Manual - Page 295
7), and then remove the cover (callout 8). Figure 6-163 Remove the laser/scanner assembly (Y/M) (4 of 12) 8 7 5. Disconnect one FFC ( strike you. Reinstallation tip When you reinstall the spring, make sure that the laser/scanner fits tightly up against the product chassis, and make sure that the - HP CP3525dn | Service Manual - Page 296
larger connector on the right side from the bottom. Disconnect the two smaller connectors on the right side from the top. Figure 6-165 Remove the laser/scanner assembly (Y/M) (6 of 12) 11 7. Release two tabs (callout 12), and then slide the fan assembly toward the power-supply side of the product to - HP CP3525dn | Service Manual - Page 297
screwdriver to remove the spring; the spring could forcibly leave the product and strike you. Reinstallation tip When the laser/scanner is properly positioned in the chassis, the plastic parts which protrude at the front and rear of the product will be firmly seated against the locator tabs on the - HP CP3525dn | Service Manual - Page 298
10. Remove the toner collection sensor. Figure 6-169 Remove the laser/scanner assembly (Y/M) (10 of 12) 11. Rotate the front of the laser/scanner assembly down (callout 1), and then slide it toward the right (callout 2). Lower the left corner, and then rotate the left corner out of the - HP CP3525dn | Service Manual - Page 299
12. Pull the laser/scanner assembly straight out of the product to remove it. Figure 6-171 Remove the laser/scanner assembly (Y/M) (12 of 12) ENWW Internal assemblies 271 - HP CP3525dn | Service Manual - Page 300
Laser/scanner assembly (C/Bk) Before proceeding, remove the following components: ● Toner collection unit. See Toner-collection unit on page to separate the upper-rear cover from the rear cover to remove the laser/scanner assembly (C/Bk). ● Interconnect board (ICB). See Interconnect board (ICB - HP CP3525dn | Service Manual - Page 301
to remove the spring; the spring could forcibly leave the product and strike you. Reinstallation tip When you reinstall the spring, make sure that the laser/scanner fits tightly up against the product chassis, and make sure that the FFC is fully seated in the connector. The locator tabs on the - HP CP3525dn | Service Manual - Page 302
4) located below the front door. Figure 6-174 Remove the laser/scanner assembly (C/Bk) (3 of 7) 4 4. Open the front door, and then remove one screw (callout 5) and the cover (callout 6). Figure 6-175 Remove the laser/scanner assembly (C/Bk) (4 of 7) 6 5 274 Chapter 6 Removal and replacement - HP CP3525dn | Service Manual - Page 303
of 5) on page 276. To reinstall the actuators, see Reinstall the protective glass cleaner (PGC) actuators on page 276. Figure 6-176 Remove the laser/scanner assembly (C/Bk) (5 of 7) 8 7 6. Release one spring (callout 9). CAUTION: The spring is not captive. Do not lose the spring when it is removed - HP CP3525dn | Service Manual - Page 304
the product until you can see the PCA, and then remove the assembly from the product. Reinstallation tip When the laser/scanner is properly positioned in the chassis, the plastic parts which protrude at the front and rear of the product will be firmly seated against the locator tabs on the chassis - HP CP3525dn | Service Manual - Page 305
2. Remove the actuator and spring from the product. Install the spring on the actuator. Figure 6-180 Reinstall the PGC actuators (2 of 5) 3. Before proceeding, take note of the following: ● Callout 1: The pin on the actuator will be installed into the slot in the chassis. ● Callout 2: The pin on - HP CP3525dn | Service Manual - Page 306
4. Place the end of the actuator into the PGC rod, and then use a small flat blade screw driver to fasten the end of the spring on the tab on the chassis. Figure 6-182 Reinstall the PGC actuators (4 of 5) 5. Push down on the actuator - HP CP3525dn | Service Manual - Page 307
on page 240. ● Low-voltage power supply. See Low-voltage power supply on page 243. Remove the high-voltage power supply upper CAUTION: ESD-sensitive part. NOTE: If the sheet-metal tray was removed with the DC controller, begin at step 3. 1. Remove one screw (callout 1). Figure 6-184 Remove the - HP CP3525dn | Service Manual - Page 308
2. Remove three screws (callout 2), and then rotate the sheet-metal plate away from the power supply. NOTE: You do not need to completely remove the sheet-metal plate to access the power supply. Figure 6-185 Remove the high-voltage power supply upper (2 of 5) 2 3. Duplex models only: Disconnect one - HP CP3525dn | Service Manual - Page 309
4. Remove three screws (callout 4). Figure 6-187 Remove the high-voltage power supply upper (4 of 5) 4 5. Release four tabs (callout 5), and then remove the power supply. Figure 6-188 Remove the high-voltage power supply upper (5 of 5) 5 ENWW Internal assemblies 281 - HP CP3525dn | Service Manual - Page 310
Reinstall the high-voltage power supply upper When you reinstall the power supply, look through the holes in the PCA and make sure that the highvoltage contact springs are correctly seated against the PCA. NOTE: For a replacement power supply, remove one wire harness (callout 1) and then install it - HP CP3525dn | Service Manual - Page 311
Drum motor 1 Before proceeding, remove the following components: ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. ● Rear cover and upper-rear cover. See Rear cover and upper-rear cover on page 209. NOTE: It is not necessary to separate the upper-rear - HP CP3525dn | Service Manual - Page 312
Drum motor 2 or drum motor 3 Before proceeding, remove the following components: ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left cover on page 200. ● Rear cover and upper-rear cover. See Rear cover and upper-rear cover on page 209. NOTE: It is not necessary to separate - HP CP3525dn | Service Manual - Page 313
Fuser motor Before proceeding, remove the following components: ● Formatter. See Formatter PCA . NOTE: It is not necessary to separate the upper-rear cover from the rear cover to remove the fuser motor. ● Interconnect board (ICB). See Interconnect board (ICB) on page 238. TIP: For internal product - HP CP3525dn | Service Manual - Page 314
Remove the fuser motor Disconnect one connector (callout 1), remove three screws (callout 2), and then remove the motor. Figure 6-192 Remove the fuser motor 1 2 286 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 315
, remove the following components: ● Print cartridges. See Print cartridges on page 170. ● Formatter. See Formatter PCA on page 175. ● Secondary transfer assembly. See Secondary transfer assembly on page 186. ● Intermediate transfer belt (ITB). See Intermediate transfer belt (ITB) on page 188 - HP CP3525dn | Service Manual - Page 316
callout 1), and then remove the cover (callout 2). Figure 6-193 Remove the main-drive assembly (1 of 7) 1 2 2. Release the wire harnesses from the guide (callout 3), and then remove one screw (callout 4). Figure 6-194 Remove the main-drive assembly (2 of 7) 4 3 288 Chapter 6 Removal and replacement - HP CP3525dn | Service Manual - Page 317
, and then remove the bracket. Figure 6-195 Remove the main-drive assembly (3 of 7) 4. Disconnect seven connectors (callout 5), and then release the wire harnesses from the guides. Figure 6-196 Remove the main-drive assembly (4 of 7) 5 ENWW Internal assemblies 289 - HP CP3525dn | Service Manual - Page 318
plates (callout 7). Figure 6-197 Remove the main-drive assembly (5 of 7) 7 6 6. Release the FFCs and lower wiring harness from the guide, and then release one tab (callout 8) and remove the guide. Figure 6-198 Remove the main-drive assembly (6 of 7) 8 290 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 319
. The cams on the backside of the assembly can be dislodged. If the cams become dislodged, install them on the shafts as shown in Figure 6-201 Reinstall the main-drive assembly (2 of 11) on page 292. The black cam must be installed on the shaft furthest away from the developing-disengagement - HP CP3525dn | Service Manual - Page 320
bracket (callout 1), two guides (callout 2), and the developing-disengagement motor (callout 3). Install the bracket and guides on the replacement main-drive 4) on the back side of the assembly. Figure 6-201 Reinstall the main-drive assembly (2 of 11) 4 292 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 321
3. Slowly rotate the shaft near the black cam. WARNING! Do not touch the plastic gears or cams. You must not wipe away any of the grease that is applied to these components. Always rotate the gears and cams by rotating the metal drive shaft. Figure 6-202 Reinstall the main-drive assembly (3 of 11) - HP CP3525dn | Service Manual - Page 322
5. Verify that the cams (callout 5) align correctly. TIP: The second cam in from the right (the white cam to the left of the black cam), should have the second hole aligned with the hole in the sheet-metal chassis. The third cam in from the right, should have the third hole aligned with the hole in - HP CP3525dn | Service Manual - Page 323
7. When the assembly is placed on the chassis, the pin on the swing gear and on the bracket (callout 6), must align with the holes in the chassis (callout 7). Figure 6-206 Reinstall the main-drive assembly (7 of 11) 7 6 8. Position the assembly on the chassis. Figure 6-207 Reinstall the main-drive - HP CP3525dn | Service Manual - Page 324
9. Use your finger to push in on the assembly, and use a small flat blade screwdriver to align the pin on the swing gear with the hole in the chassis. Figure 6-208 Reinstall the main-drive assembly (9 of 11) 10. When the assembly is correctly installed against the chassis, the pin above the swing - HP CP3525dn | Service Manual - Page 325
reinstall the developing-disengagement motor (callout 8). TIP: After reassembling the product, use the DIAGNOSTICS menu to print a COLOR BAND TEST page. If the test page shows one or more color planes are not printing (usually in the upper left corner of the page), the cam or cams for the missing - HP CP3525dn | Service Manual - Page 326
-drive assembly Before proceeding, remove the following components: ● Formatter. See Formatter PCA on page 175. ● Fuser. See Fuser on page 179. ● Secondary transfer assembly. See Secondary transfer assembly on page 186. ● Right-rear cover. See Right-rear cover on page 198. ● Left cover. See Left - HP CP3525dn | Service Manual - Page 327
(callout 1), and then release the wire harnesses from the guide (callout 2). Figure 6-211 Remove the fuser-drive assembly (1 of 6) 2 1 2. Remove two screws (callout 3), and then remove the guide (callout 4). Figure 6-212 Remove the fuser-drive assembly (2 of 6) 3 4 ENWW Internal assemblies 299 - HP CP3525dn | Service Manual - Page 328
(callout 5), and then remove the sheet-metal plate (callout 6). Figure 6-213 Remove the fuser-drive assembly (3 of 6) 6 5 4. Remove one screw (callout 7), and then remove the cover (callout 8). Figure 6-214 Remove the fuser-drive assembly (4 of 6) 8 7 300 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 329
: A gear on the assembly is not captive. Do not lose the gear when you remove the assembly. If the gear becomes dislodged, see Reinstall the fuser-drive assembly on page 302. Figure 6-216 Remove the fuser-drive assembly (6 of 6) ENWW Internal assemblies 301 - HP CP3525dn | Service Manual - Page 330
Reinstall the fuser-drive assembly If the gear (callout 1) is dislodged when the assembly is removed, use the figure below to correctly install it on the assembly. Figure 6-217 Reinstall the fuser-drive assembly 1 302 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 331
Delivery assembly Before proceeding, remove the following components: ● Fuser. See Fuser on page 179. ● Secondary transfer assembly. See Secondary transfer assembly on page 186. ● Intermediate transfer belt (ITB). See Intermediate transfer belt (ITB) on page 188. ● Right-rear cover. See Right-rear - HP CP3525dn | Service Manual - Page 332
Remove the delivery assembly 1. Remove two screws (callout 1), and then remove the guide (callout 2). Figure 6-218 Remove the delivery assembly (1 of 5) 2 1 2. Remove two screws (callout 3). Figure 6-219 Remove the delivery assembly (2 of 5) 3 304 Chapter 6 Removal and replacement ENWW - HP CP3525dn | Service Manual - Page 333
3. Release one tab (callout 4), and then remove the gear (callout 5). Figure 6-220 Remove the delivery assembly (3 of 5) 5 4 4. Release one tab (callout 6), and then rotate the locking clip until the tab on the clip aligns with the slot in the chassis. Figure 6-221 Remove the delivery assembly (4 of - HP CP3525dn | Service Manual - Page 334
5. Disconnect one connector (callout 7), remove two screws (callout 8), and then carefully lift the assembly (callout 9) off of the product to remove it. CAUTION: A solenoid arm (duplex models only; on the right side) and a spring (on the left side) on the assembly are not captive. Do not lose the - HP CP3525dn | Service Manual - Page 335
Reinstall the delivery assembly 1. Duplex models only: Make sure that the solenoid arm is correctly installed on the assembly. Figure 6-223 Reinstall the delivery assembly (1 of 2) 2. Make sure that the spring is correctly installed on the assembly. Figure 6-224 Reinstall the delivery assembly (2 of - HP CP3525dn | Service Manual - Page 336
Duplex-drive assembly Before proceeding, remove the following components: ● Fuser. See Fuser on page 179. ● Secondary transfer assembly. See Secondary transfer assembly on page 186. ● Intermediate transfer belt (ITB). See Intermediate transfer belt (ITB) on page 188. ● Right-rear cover. See Right- - HP CP3525dn | Service Manual - Page 337
Remove the duplex-drive assembly 1. Disconnect two connectors (callout 1), and then remove three screws (callout 2). Figure 6-225 Remove the duplex-drive assembly (1 of 2) 2 1 2. Remove the assembly. Figure 6-226 Remove the duplex-drive assembly (2 of 2) ENWW Internal assemblies 309 - HP CP3525dn | Service Manual - Page 338
Optional paper feeder assembly (Tray 3) NOTE: For information about removing the Tray 3 pickup roller, see Pickup and feed rollers (Tray 3) on page 182. For information about removing the Tray 3 cassette, see Tray cassette on page 178. For information about removing the right door (optional paper - HP CP3525dn | Service Manual - Page 339
example, resetting page counts) for the HP Color LaserJet CP3525, you must install the CP1210 Service Config Tool (available at your HP authorized repair center). ● Solve problems checklist ● Menu map ● Troubleshooting process ● Tools for troubleshooting ● Control-panel messages table ● Event log - HP CP3525dn | Service Manual - Page 340
paused, or set to print offline. Windows: Click Start, click Settings, and then click Printers or Printers and Faxes. Double-click HP Color LaserJet CP3525. -or- Mac OS X: Open Printer Setup Utility, and then double-click the line for the HP Color LaserJet CP3525. 312 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 341
you have installed the HP Color LaserJet CP3525 Series printer driver. Check the program to make sure that you are using the HP Color LaserJet CP3525 Series printer driver. 9. Print a short document from a different program that has worked in the past. If this solution works, the problem is with the - HP CP3525dn | Service Manual - Page 342
open the menus. 2. Use the arrow buttons to navigate to the INFORMATION submenu, and then press OK. 3. Use the arrow buttons to navigate to the PRINT MENU MAP submenu, and then press OK to print the menu structure. 4. Press X to exit the menus. 314 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 343
only supported media? ● Is the media in good condition (contains no curls, folds, and so forth)? ● Is the media stored correctly and within environmental limits? ● Is the amount of media in the tray within specifications? ● Is the media correctly placed in the tray? ENWW Troubleshooting process - HP CP3525dn | Service Manual - Page 344
one to two hours. Check for and remove any non-HP components (print cartridges, memory modules, and EIO cards) from the product. If the hardware or software configuration has not changed or the problem is not associated with any specific software, contact the Customer Care Center. Remove the product - HP CP3525dn | Service Manual - Page 345
Image quality Does the print quality meet the customer's requirements? Yes No Compare the images with the sample defects in the image defect operating correctly, the next troubleshooting step is to isolate print engine, formatter, and control panel problems. Perform an engine test (see Engine - HP CP3525dn | Service Manual - Page 346
does not print, try removing the formatter and then performing the engine test again. If the engine test is then successful, the problem is almost formatter, and then verify that the heartbeat LED is flashing. 6. Remove any HP Jetdirect or other EIO cards, and then try to turn the product on again - HP CP3525dn | Service Manual - Page 347
troubleshoot product problems. Understand lights on the formatter Three LEDs on the formatter indicate that the product is functioning correctly. 1 2 1 HP Jetdirect LEDs 2 Heartbeat LED HP Jetdirect LEDs The embedded HP Jetdirect print manually configure the link settings on the embedded print - HP CP3525dn | Service Manual - Page 348
in the HP Color LaserJet CP3525 Series product. The product contains extensive internal diagnostics that help in troubleshooting print quality, paper path, noise, component, and timing issues. Diagnostics menu The menu allows you to run tests that can help you identify and solve problems with the - HP CP3525dn | Service Manual - Page 349
the printer in mid-print cycle causes a jam that may need to be manually removed. A service representative performs this test. Use this page to print a color-band ● Disable-cartridge check ● Paper-path sensors ● Manual sensor test ● Manual sensor test 2 ● Component test While the printer is in - HP CP3525dn | Service Manual - Page 350
2. Locate the slots on the right and front of the product. Figure 7-1 Diagnostic test (1 of 3) Figure 7-2 Diagnostic test (2 of 3) 322 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 351
to the product. This test can be used isolate problems, such as noise, and to isolate print-quality problems that are related to individual print cartridges. NOTE: Color cartridges are not keyed and can be interchanged. The black print cartridge is keyed and cannot fit into any other position. An - HP CP3525dn | Service Manual - Page 352
whether to use the duplex path, and specify the number of copies to print. Multiple copies can be printed to help isolate intermittent problems. The following options become available after you start the diagnostic feature: ● PRINT TEST PAGE. Run the paper-path test from the default settings: Tray - HP CP3525dn | Service Manual - Page 353
and then press the OK button. 3. Press the down arrow to highlight MANUAL SENSOR TEST, and then press the OK button. To exit this diagnostic, full sensor SR6 G OHT sensor OHT H fuser (fixing) pressure-release sensor SR7 I primary transfer-roller-disengagement sensor SR17 K front door - HP CP3525dn | Service Manual - Page 354
If no response, replace the registration assembly. B and C loop sensors 1. Open the right door. 2. Lower the secondary transfer assembly. 3. Slowly insert a piece of paper to activate the B and C loop sensors underneath the fuser. Figure 7-6 Test the loop sensors 326 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 355
sensor flag does not move freely, replace the fuser. See Fuser on page 179. Figure 7-7 Test the fuser delivery sensor (1 of 2) 4. Insert a piece of paper to activate the fuser (fixing) delivery sensor. Figure 7-8 Test the fuser (fixing) delivery sensor (2 of 2) ENWW Tools for troubleshooting 327 - HP CP3525dn | Service Manual - Page 356
control-panel display for a sensor response. 6. If there is no response, replace the fuser (fixing) delivery sensor. E duplex re-pickup sensor 1. Open the right door. 2. clarity. 1. Open the right door. 2. Lower the secondary transfer assembly. 3. Remove the fuser. 328 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 357
secondary transfer assembly. 3. Remove the fuser, and then rotate the gear (callout 1) to move the flag (callout 2). If the flag does not actuate, replace the fuser. See Fuser on page 179. Figure 7-11 Test the fuser (fixing) pressure-release sensor (1 of 2) 2 1 ENWW Tools for troubleshooting - HP CP3525dn | Service Manual - Page 358
fuser (fixing) pressure-release sensor. I primary transfer-roller disengagement sensor 1. Open the right door. 2. Lower the secondary transfer Intermediate transfer belt (ITB) on page 188. Figure 7-13 Test the primary transfer-roller disengagement sensor (1 of 2) 1 2 330 Chapter 7 Solve problems - HP CP3525dn | Service Manual - Page 359
5. Remove all print cartridges. NOTE: Cover all removed print cartridges with paper. 6. Locate the sensor behind the cyan OPC drum position. 7. Insert a piece of paper to activate the primary transfer-roller disengagement sensor. Figure 7-14 Test the primary transfer-roller disengagement sensor (2 - HP CP3525dn | Service Manual - Page 360
cover and right-front cover. By removing the right-front cover, you can tell if the linkages are properly closing the switches. 332 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 361
PCA and the switches still do not close, replace the DC controller PCA. See DC controller PCA and tray on page 240. ENWW Tools for troubleshooting 333 - HP CP3525dn | Service Manual - Page 362
then press the OK button. 3. Press the down arrow to highlight MANUAL SENSOR TEST 2, and then press the OK button. Table 7-4 Manual sensor test 2 diagnostic tests Sensor or switch name Sensor or switch number to 1. L Tray 1 media present sensor 1. Open Tray 1. 334 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 363
2 paper-out sensor 3. Check the control-panel display for sensor response. 4. If there is no response, replace the tray 2 paper-out sensor. ENWW Tools for troubleshooting 335 - HP CP3525dn | Service Manual - Page 364
there is no response, replace the lifter-drive assembly. See Lifter-drive assembly on page 254. O Tray 2 stack-surface sensor 1. Remove Tray 2. 336 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 365
7-24 Test the optional Tray 3-empty sensor 3. Check the control-panel display for sensor response. 4. If no response, replace the optional Tray 3. ENWW Tools for troubleshooting 337 - HP CP3525dn | Service Manual - Page 366
for sensor response. 4. If there is no response, replace the optional Tray 3. R optional Tray 3 stack-surface sensor (R) 1. Remove the optional Tray 3 cassette. 338 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 367
size switch Figure 7-27 Test the optional Tray 3 media-size sensors 2. If any of the tests fail, replace the 500-sheet feeder ENWW Tools for troubleshooting 339 - HP CP3525dn | Service Manual - Page 368
fusing (fixing) delivery E duplex re-pick up F output bin full G media sensor H fuser (fixing) pressure release I primary roller disengagement K front-door switch L MP Tray 1 SR9 SR3 SR4 SR1 SW1 Print/stop test Use this diagnostic test to isolate the cause of problems such as image-formation - HP CP3525dn | Service Manual - Page 369
test activates individual parts independently to isolate problems. Each component TRANSFER MOTORS M5 All motors related to cartridges and belts BELT ONLY CARTRIDGE MOTORS M10 ● M3: yellow ● M4: magenta and cyan ● M5: black Remove all print cartridges to perform this test. Rotates the ITB belt - HP CP3525dn | Service Manual - Page 370
solenoid number MAGENTA LASER SCANNER M9 YELLOW LASER SCANNER M9 FUSER (FIXING) MOTOR M2 FUSER (FIXING) PRESSURE fuser motor and pressurizes or depressurizes the pressure release motor. Activates CMYK developer alienation in the following sequence: All colors engaged, all colors problems ENWW - HP CP3525dn | Service Manual - Page 371
Diagrams Formatter PCA Figure 7-28 Formatter PCA 1 Table 7-7 Formatter PCA Item Description 1 DIMM slot 2 EIO slot 3 Internal USB ports 2 3 ENWW Tools for troubleshooting 343 - HP CP3525dn | Service Manual - Page 372
sensor J120: drum motor 1 and drum motor 2 J137: toner collection unit (TCU) full, TCU motor, toner level detection J110: YM laser J121: drum motor 3, drum position 1,2,3 J138: 24 v to HVPS lower J111: CK laser J122: OHT out J139: fuser sensors J112: pre-exposure LEDs (front) J123: pressure - HP CP3525dn | Service Manual - Page 373
PCA Figure 7-30 Paper feeder driver PCA Table 7-9 Paper feeder driver PCA connectors J401: engine connector J402: not used J404: SW1, SW2, lifter motor J405: SR1, SR2, SR3, , see Table 7-10 PCAs, motors, fans, switches, solenoids, and clutches on page 350 ENWW Tools for troubleshooting 345 - HP CP3525dn | Service Manual - Page 374
Base product Figure 7-31 Component locations (1 of 5) 1 346 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 375
Figure 7-32 Component locations (2 of 5) 3 2 4 5 6 7 8 ENWW Tools for troubleshooting 347 - HP CP3525dn | Service Manual - Page 376
Figure 7-33 Component locations (3 of 5) 9 10 11 12 13 14 348 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 377
Figure 7-34 Component locations (4 of 5) 15 16 17 18 ENWW Tools for troubleshooting 349 - HP CP3525dn | Service Manual - Page 378
7-10 PCAs, motors, fans, switches, solenoids, and clutches Location Connector Component abbreviation Component name 1 J89 M12 Residual toner-feed motor 2 J26 FM2 Cartridge fan 3 J27 FM3 Delivery fan 4 J62 SW3 24V interlock switch 5 J118 SW1, SW2 5V interlock switch 6 J84 - HP CP3525dn | Service Manual - Page 379
motor 19 J8 SL1 Primary transfer roller disengagement solenoid 20 J15 M2 Fuser motor 21 J55 M9 Yellow/magenta scanner motor 22 J56 M8 Cyan/black scanner motor 23 J20 M11 Duplex reverse motor (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only) 24 J21 SL2 - HP CP3525dn | Service Manual - Page 380
, 34 30 31 32 33 Connector J18 J21 J16 J15 J14 34 Component abbreviation PF PCA SL1 SW2 SW1 M2 M1 Component name Paper-feeder driver PCA Paper-feeder pickup solenoid Paper-feeder door switch Paper feeder cassette media size switch Paper-feeder lifter motor Paper-feeder motor 352 Chapter 7 Solve - HP CP3525dn | Service Manual - Page 381
Component abbreviation SR1 SR2 SR3 SR4 SR5 SR6 SR7 Component name Tray 3 paper surface sensor 1 Tray 3 paper surface sensor 2 Tray 3 paper sensor Tray 3 feed sensor Fuser (fixing) output sensor Output bin full sensor Fuser (fixing) pressure release sensor ENWW Tools for troubleshooting 353 - HP CP3525dn | Service Manual - Page 382
Loop sensor 1 SR15 Loop sensor 2 SR17 ITB disengagement sensor SR20 Cassette-media presence sensor SR21 MP-tray-media-presence sensor SR22 Duplex re-pickup sensor (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only) 354 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 383
Tools for troubleshooting 355 ENWW Operation 1 Cassette pickup solenoid transfer bias Y 20 Primary transfer bias M 21 Primary transfer bias C 22 Primary transfer bias Bk 23 Secondary transfer bias Print command STBY INTR Timing chart is two consecutive print jobs on letter-size paper (full color - HP CP3525dn | Service Manual - Page 384
Circuit diagrams Figure 7-39 General circuit diagram Fuser pressure release sensor Fuser delivery sensor Fuser motor Fuser 356 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 385
Figure 7-40 Paper feeder circuit diagram ENWW Tools for troubleshooting 357 - HP CP3525dn | Service Manual - Page 386
the defect Print cartridge: primary charge roller Print cartridge: developer roller Printer: primary transfer roller Print cartridge: RS roller Printer: secondary transfer roller ITB: secondary transfer backing roller Printer: distance from secondary transfer roller to fuser Print cartridge: OPC - HP CP3525dn | Service Manual - Page 387
Fuser pressure roller Printer: distance from primary transfer roller to secondary transfer roller for black Print cartridge station print-quality test pages Print-quality-troubleshooting pages Use the built-in print-quality-troubleshooting pages to help diagnose and solve print-quality problems - HP CP3525dn | Service Manual - Page 388
pages. Follow the instructions on the pages that print out. Figure 7-42 Print-quality troubleshooting procedure hp color LaserJet CP 3525 Printers Print Quality Troubleshooting Procedure 1 Figure 7-43 Yellow print-quality troubleshooting page Yellow Green 360 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 389
cannot be easily seen unless combined with cyan, so half of each page is yellow and the other half is an amplified version of yellow problems (green half). Compare the yellow on page one with the corresponding green on page two for defects. You can also check the cyan page for - HP CP3525dn | Service Manual - Page 390
in the image drum or offset in the fuser. NOTE: To get further assistance in print quality troubleshooting, go to www.hp.com/support/ cljcp3525 and select PQ Troubleshooting Tools. Diagnostics page Use the diagnostics page to evaluate problems with color plane registration, EP parameters, and - HP CP3525dn | Service Manual - Page 391
HP Color LaserJet CP 3525 Printers Diagnostics Page 1 24 Page 1 3 5 6 78 DD MMM YYYY XX:XX 1 Calibration information 2 Parameters 3 Color density 4 Color plane registration 5 Primary colors 6 Secondary colors 7 Temperature values (22M) 8 Humidity values (22N) Cleaning page - HP CP3525dn | Service Manual - Page 392
, an embedded Jetdirect configuration page prints. Configuration page Use the configuration page to view current product settings, to help troubleshoot product problems, or to verify installation of optional accessories, such as memory (DIMMs), paper trays, and printer languages. 1. Press the Menu - HP CP3525dn | Service Manual - Page 393
page HP Color LaserJet CP 3525 Printers Configuration Page 1 4 Page 1 5 2 6 3 7 8 ENGLISH 1 Printer information 2 Installed personalities and options 3 Color density 4 Calibration information 5 Memory 6 Event log 7 Security 8 Paper trays and options ENWW Tools for troubleshooting 365 - HP CP3525dn | Service Manual - Page 394
HP embedded Jetdirect page, which contains the following information: Figure 7-47 HP embedded Jetdirect page HP Color LaserJet CP 3525 Printers Embedded Jetdirect Page 1 4 Page 1 2 5 3 6 1 HP the HP Jetdirect configuration lines indicates "I/O Card Ready". 366 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 395
Embedded protocol page The embedded protocol page contains the following information: Figure 7-48 Embedded protocol page HP Color LaserJet CP 3525 Printers Embedded Protocol Page Page 1 1 3 4 2 1 IPX/SPX 2 Novell/NetWare 3 AppleTalk 4 DLC/LLC ENWW Tools for troubleshooting 367 - HP CP3525dn | Service Manual - Page 396
servicing the product. This information is on the various configuration pages. Table 7-12 Important information on the configuration pages Type of information Specific HP Color-band test The color-band test page shows bands of colors that can indicate whether or not the product is producing colors - HP CP3525dn | Service Manual - Page 397
for the color/ black I/F PCA (J2201B), cartridge driver PCA (J403, J404, and J405), and the DC controller PCA (J141). 3. Replace the black-toner feed motor. One of the cyan, magenta, or yellow print cartridges is defective and needs to be replaced. Record the message and contact support. After - HP CP3525dn | Service Manual - Page 398
), the cartridge driver PCA (J402, J403, J406, and J408), and the DC controller PCA (J142). 3. Replace the color-toner feed motor. 10.92 CARTRIDGE NOT ENGAGED This error can occur after the front door is Open and close the front door to engage the opened and might not be related to the user print - HP CP3525dn | Service Manual - Page 399
TOP sensor in time when printing the second side of a duplex print job (HP Color LaserJet CP3525dn printer and HP Color LaserJet CP3525x printer only). Check the media weight to make sure it is within specification. If it is not, the customer must manually duplex. 13.1C.00 FUSER WRAP JAM 13.20.00 - HP CP3525dn | Service Manual - Page 400
Close both doors. during printing. 13.30.00 JAM Inspect the paper guides for damage. Replace damaged guides if possible. FUSER AREA JAM A jam has occurred in the fuser area. CAUTION: The fuser can be hot while the product is in use. Wait for the fuser to cool before handling it. For instructions - HP CP3525dn | Service Manual - Page 401
the fuser area. CAUTION: The fuser can be hot while the product is in use. Wait for the fuser to cool before handling it. For instructions on clearing Too much data was sent to the embedded HP Jetdirect print server. Press the OK button to print the transferred data. (Some data might be lost.) - HP CP3525dn | Service Manual - Page 402
To continue press OK ● X=4: No VSYNC error ● X=6: ITB detection error ● X=7: Feed delay error ● X=8: Fuser too hot ● X=9: Noisy VDREQ 48.01 TRANSFER UNIT ERROR The transfer belt has dislocated during printing. 49.XXXX ERROR A firmware error has occurred. To continue turn off then on 50 - HP CP3525dn | Service Manual - Page 403
a hightemperature error. 1. Reinstall the fuser. Check the connector (J50) between the fuser and the product. Replace the cable or fuser if the connector is damaged. 2. If the problem persists, replace the fuser. See Fuser on page 179. 50.4 FUSER ERROR The fuser driver circuit has experienced an - HP CP3525dn | Service Manual - Page 404
. 2. If the problem persists, replace the fuser. See Fuser on page 179. 50.X FUSER ERROR A fuser error has occurred. Make sure you have the correct fuser. Reseat the fuser. Turn the product off, and then turn the product on. 51.20 ERROR To continue turn off then on The black laser (51.20) or - HP CP3525dn | Service Manual - Page 405
laser scanner or the yellow/magenta laser scanner. See Laser/scanner assembly (C/Bk) on page 272 or Laser/scanner assembly (Y/M) on page 265. 52.XY ERROR A printer PCA (J115). 2. Replace the environmental sensor. See Delivery fan, cartridge fan, and environmental sensor on page 215. 54.XX ERROR - HP CP3525dn | Service Manual - Page 406
● 55.04.YY: Communications time out ● 55.05.YY: Printer error 1. Turn the product off, and then turn the product on ERROR To continue turn off then on A temporary printing error has occurred. Turn the product off, and cartridge fan. See Delivery fan, cartridge 378 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 407
printing error has occurred. A fan has experienced an error. ● XX=01: Delivery fan ● XX=02: Cartridge printing error has occurred. The toner residual feed motor (M12) is defective. 59.30 ERROR To continue turn off then on The fuser controller PCA. 2. If the problem persists, replace the lowvoltage - HP CP3525dn | Service Manual - Page 408
The toner-collection unit is full. ● The chute at the top of the toner collection unit is clogged. Replace the toner-collection unit. See Change the toner collection unit on 59.F0 ERROR To continue turn off then on The primary transfer-alienation motor has experienced an error. 1. Check to ensure - HP CP3525dn | Service Manual - Page 409
ITB. See Intermediate transfer belt (ITB) on page 188. 59.XY ERROR A temporary printing error has occurred. driver PCA. 4. If the problem persists, replace the optional paper feeder. 60.X ERROR To continue turn off then on The tray specified by X is not lifting correctly. Follow the instructions - HP CP3525dn | Service Manual - Page 410
problem persists, replace the formatter. See Formatter PCA on page 175. 69.X ERROR To continue turn off then on A temporary printing embedded HP Jetdirect card has failed. Contact HP support. See Customer support on available when the Configure the tray to a specific size, and then size is set to - HP CP3525dn | Service Manual - Page 411
embedded Web server or HP Web Jetadmin to initialize the component. CARTRIDGES IN WRONG POSITIONS Two or more print-cartridge slots contain the Install the correct color cartridge in each slot. wrong color print cartridge. From left to right, install the print cartridges in this order: ● Yellow - HP CP3525dn | Service Manual - Page 412
engine Creating... CLEANING PAGE DATA RECEIVED To print last page press OK DATE/TIME = YYYY waiting for the command to print the last page. Press the OK button to print the last page. The current hard drive. Use the embedded Web server or HP Web Jetadmin to initialize the component. No action - HP CP3525dn | Service Manual - Page 413
being fed from another tray. INSTALL CARTRIDGE The print cartridge has been removed or has Replace or reinstall the print cartridge been installed incorrectly. correctly to continue printing. See Change print cartridges on page 83. INSTALL FUSER The fuser has been removed or installed - HP CP3525dn | Service Manual - Page 414
loaded. 4. Confirm that the paper guides are in the correct position. 5. message appears when printing 4 x 6 in Install the HP postcard media insert in paper. the HP postcard media insert turn the product off. MANUALLY FEED press the OK button to print. To use another tray, - HP CP3525dn | Service Manual - Page 415
supplies is not covered under warranty. HP cannot ensure the accuracy or the availability of certain features. ORDER CARTRIDGE The identified print cartridge is nearing the end of its estimated useful life. Order a replacement print cartridge. Printing will continue until a supply needs - HP CP3525dn | Service Manual - Page 416
ORDER TONER COLLECTION UNIT The toner-collection unit is nearly full. Order a replacement toner-collection unit now. Printing can continue. PAPERLESS MODE This message displays when the motors in the paper path do not rotate. Customers do not see this message unless there is a production problem - HP CP3525dn | Service Manual - Page 417
is in progress. Do not turn the product off until the product returns to Ready. Remove all print cartridges To exit press The product is testing the transfer unit assembly. To perform the test, remove all the print cartridges. To cancel the test, press the stop button . Remove at least one - HP CP3525dn | Service Manual - Page 418
low threshold. before handling it. Press the OK button to continue printing until the fuser reaches the end of life, or replace the fuser now. Replace the fuser 1. Open the right door. 2. Grasp the blue handles on each side of the fuser, and pull it straight out to remove it. 3. Install the - HP CP3525dn | Service Manual - Page 419
of documents printed and other factors. REPLACE TONER COLLECTION UNIT The toner collection unit has reached its estimated capacity. Replace the toner collection unit or, if you wish to have the toner collection unit operate past its estimated capacity, reconfigure the printer to use OVERRIDE - HP CP3525dn | Service Manual - Page 420
COLOR USE setting for a particular user or print job. in the SYSTEM SETUP menu. Rotating Motor To exit press A component test is in progress; the Press the stop button component selected is the cartridge to the specific tray. continue printing. this tray to print. Refill the - HP CP3525dn | Service Manual - Page 421
printed. UNABLE TO STORE JOB A job cannot be stored because of a memory Install additional memory in the product. or configuration problem. UNAUTHORIZED SUPPLY IN USE The product is using a non-HP on page 89. UNSUPPORTED DRIVE INSTALLED A non-supported hard drive has been installed. Turn off - HP CP3525dn | Service Manual - Page 422
for a print cartridge contains a cartridge that is not the correct color. From left to right, install the print cartridges in this order: ● Yellow ● Magenta ● Cyan ● Black Remove the print cartridge from that slot, and install a cartridge that is the correct color. 394 Chapter 7 Solve problems - HP CP3525dn | Service Manual - Page 423
Use the event log to help diagnose and solve product problems. 1. Press the Menu button. 2. Press the down arrow to highlight DIAGNOSTICS, and then press the OK button. 3. Press the down arrow to highlight PRINT EVENT LOG, and then press the OK button to print the pages. Show an event log Use the - HP CP3525dn | Service Manual - Page 424
Figure 7-49 Sample event log hp color LaserJet CP 3525 Printers Event Log Page 1 1 2 3 45 6 7 1 Product information 2 Event number 3 Date and time 4 Engine cycles 5 Event log code 6 Firmware version number 7 Description of personality Clear the event log Use the SERVICE menu to clear - HP CP3525dn | Service Manual - Page 425
. ● YY = 01 cyan print cartridge (C) ● YY = 02 magenta print cartridge (M) ● YY = 03 yellow print cartridge (Y) NON-SPECIFIC PAPER JAM PAPER FEED 1, PAPER LATE JAM PAPER FEED 1, PAPER STOPPED JAM PAPER FEED 2, PAPER LATE JAM PAPER FEED 2, PAPER STOPPED JAM FUSER OUTPUT, PAPER LATE JAM - HP CP3525dn | Service Manual - Page 426
problems HP by reversing the motion. NON-SPECIFIC PAPER JAM DUPLEX PATH, PAPER STOPPED JAM NON-SPECIFIC PAPER JAM NON-SPECIFIC PAPER JAM NON-SPECIFIC PAPER JAM NON-SPECIFIC PAPER JAM NON-SPECIFIC PAPER JAM NON-SPECIFIC PAPER JAM NON-SPECIFIC PAPER JAM NON-SPECIFIC PAPER JAM FUSER - HP CP3525dn | Service Manual - Page 427
FEED 1, PAPER LATE JAM FUSER OUTPUT, PAPER LATE JAM PAPER FEED 2, PAPER STOPPED JAM PAPER FEED 3, PAPER STOPPED JAM Paper jam, incompatible transparency NON-SPECIFIC PAPER JAM Feed roller error ● X = 2 Tray 2 (upper cassette) ● X = 3 Tray 3 (lower cassette) ● X=11 Yellow laser scanner ● X=12 Magenta - HP CP3525dn | Service Manual - Page 428
-environment sensor is abnormal. Ensure the product is in a supported environment. If the error persists, replace the CN1 environment sensor. Printer error Developer failure Printer error Density sensor failure. Printer error Waste toner sensor failure OHT sensor out of range Media sensor - HP CP3525dn | Service Manual - Page 429
transfer assembly. See Secondary transfer assembly on page 186. The ITB unit is abnormal. Ensure the product is in a supported environment. If the error persists, replace the ITB. Intermediate transfer belt the down arrow to highlight out of range. PRINT QUALITY, and then press ● XX=03: Yellow - HP CP3525dn | Service Manual - Page 430
the down arrow to highlight PRINT QUALITY, and then press the OK button. 4. Press the down arrow to highlight FULL CALIBRATE NOW, and then press the OK button. 5. If the error persists, replace the CPR sensor assembly. 6. Replace the ITB. See Intermediate transfer belt (ITB) on page 188. The - HP CP3525dn | Service Manual - Page 431
Event log message 99.00.08 99.00.09 99.00.10 99.00.11 99.00.12 99.00.13 Description Comments An unexpected read error occurred when reading the remainder of the header. Unexpected read error occurred when reading image data. Job canceled when reading header number and size The job was - HP CP3525dn | Service Manual - Page 432
specifications. Use only paper that meets HP specifications. See Supported paper and print media sizes on page 44. A component is installed incorrectly. Verify that the transfer belt and transfer HP Customer Support or your authorized HP service provider. 404 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 433
illustration to identify locations of jams. In addition, instructions appear on the control panel to direct you to 3 4 1 Output-bin area 2 Fuser area 3 Tray 1 area 4 Optional 500-sheet paper and heavy media tray (Tray 3) 5 Registration area 6 Transfer area Clear jams When a jam occurs, - HP CP3525dn | Service Manual - Page 434
Clear jams in the right door CAUTION: The fuser can be hot while the product is in use. Wait for the fuser to cool before handling it. TIP: To see an animation of this procedure go to this Web site: www.hp.com/go/cljcp3525-right-doorjams - HP CP3525dn | Service Manual - Page 435
3. If paper is jammed inside the right door, gently pull the paper to remove it. 4. Lift the paper-feed cover on the inside of the right door. If jammed paper is present, gently pull the paper straight out to remove it. 5. Close the paper-feed cover. 2 1 ENWW Clear paper jams 407 - HP CP3525dn | Service Manual - Page 436
fuser, gently pull downward to remove it. CAUTION: Do not touch the rollers on the transfer roller. Contaminates can affect print quality. 9. Paper could be jammed inside the fuser where it would not be visible. Remove the fuser to check for jammed paper inside. 408 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 437
to remove it. If the paper tears, remove all paper fragments. CAUTION: Even if the body of the fuser has cooled, the rollers that are inside could still be hot. Do not touch the fuser rollers until they have cooled. 2 1 1 Open the jam-access door. 2 Remove the jammed paper. c. Close the jam - HP CP3525dn | Service Manual - Page 438
. Close the right door. Clear jams in the output bin area TIP: To see an animation of this procedure go to this Web site: www.hp.com/go/cljcp3525-outputjams. 1. If paper is visible from the output bin, grasp the leading edge and remove it. 2. If jammed paper is visible in - HP CP3525dn | Service Manual - Page 439
Clear jams in Tray 1 TIP: To see an animation of this procedure go to this Web site: www.hp.com/go/cljcp3525-tray1jams. 1. If jammed paper is visible in Tray 1, clear the jam by gently pulling the paper straight out. Press the OK button - HP CP3525dn | Service Manual - Page 440
4. Gently pull the paper out of the pick up area. 5. Close the right door. 412 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 441
another jam. Be sure to clear jams before opening the tray. TIP: To see an animation of this procedure go to this Web site: www.hp.com/go/cljcp3525-tray2jams. 1. Open Tray 2 and make sure that the paper is stacked correctly. Remove any jammed or damaged sheets of paper. 2. Close the - HP CP3525dn | Service Manual - Page 442
(Tray 3) TIP: To see an animation of this procedure go to this Web site: www.hp.com/go/cljcp3525-tray3jams. 1. Open Tray 3 and make sure that the paper is stacked correctly procedure go to this Web site: www.hp.com/go/cljcp3525-lower-rightdoor-jams. 1. Open the lower right door. 414 Chapter 7 Solve - HP CP3525dn | Service Manual - Page 443
Manual sensor test (special-mode test) on page 325. Output bin full media sensor is letter F in the sensor test. Toggle the sensor to determine if the value changes for "F". If the value does not change, replace paper delivery assembly. See Delivery assembly on page 303. Poor contact of the fuser - HP CP3525dn | Service Manual - Page 444
the sensor. See Manual sensor test (special-mode test) on page 325. Table 7-16 Causes and solutions for wrapping jams Cause Solution The fuser roller or pressure roller is dirty Execute a fuser roller cleaning. The guide of the fuser delivery unit is dirty Clean the guide. The fuser roller or - HP CP3525dn | Service Manual - Page 445
is set correctly. If it is damaged, replace the following corresponding part: ● TOP sensor (SR8): Replace the registration assembly. See Registration assembly on page 233. ● Fuser delivery sensor (SR5): Replace the fuser. See Fuser on page 179. ● Loop sensor 1 or 2 (SR14 and SR15): Replace the - HP CP3525dn | Service Manual - Page 446
the fuser. See Fuser on page 179. ● Duplex re-pickup sensor (SR22): Replace the MP tray pickup assembly. See Right-door assembly on page 194. Table 7-19 Causes and solutions for pickup delay jams 2 Cause Solution The registration roller is worn or deformed. Replace the secondary-transfer unit - HP CP3525dn | Service Manual - Page 447
transfer belt (ITB) on page 188. Multiple-feed of media If the Tray 2 pickup roller or separation roller are worn or deformed, replace any defective parts. page 233. Jams in the duplex area (HP Color LaserJet CP3525dn and HP Color LaserJet CP3525x only) Table 7-21 Causes and solutions for - HP CP3525dn | Service Manual - Page 448
reverse motor (J20) and the connector duplexing driver PCA (J202). The duplexing reverse motor is on the DC controller PCA. If the problem persist, replace duplex repick sensor. The fuser. See Fuser on page 179. The spring of the fuser-delivery-sensor lever is Check the spring of the fuser - HP CP3525dn | Service Manual - Page 449
fuser-delivery repick sensor is defective Check the fuser-delivery sensor via the sensor monitor mode. If the sensor is defective, replace the fuser. See Fuser reverse sensor (J8) and sensor connector (J90) and the duplexing driver PCA (J107). The duplexing repick sensor is defective Check the - HP CP3525dn | Service Manual - Page 450
parts transfer roller is not set correctly Place the secondary-transfer-roller unit in the correct position. The secondary-transfer roller is worn or deformed Replace the secondary-transfer-roller assembly. See Secondary transfer ITB. See Intermediate transfer belt (ITB) on page problems ENWW - HP CP3525dn | Service Manual - Page 451
paper-feeder media-feed Reconnect the connector (J405) on the paper feeder driver PCA, intermediate sensor connector connector (J13) and connector (J20) of the separation roller or feed roller is worn or deformed, replace any defective parts. See Pickup and feed rollers (Tray 3) on page 182. The - HP CP3525dn | Service Manual - Page 452
is optimal. NOTE: When using this option, if the product runs out of paper and the job is being printed on both sides, some pages can be lost. ● ON - The product always reprints jammed pages. Additional memory 6. Press the Menu button to return to the Ready state. 424 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 453
for this product. Trays are not properly adjusted. Tray 2 feeds multiple sheets. Use only paper that meets HP paper specifications for this product. Make sure that the paper guides match the size of paper being used. Make sure Tray 2 is not overfilled. Open the tray and verify that the - HP CP3525dn | Service Manual - Page 454
Print a configuration page or use the control panel to determine the paper size for which the tray is configured. The guides in the tray are not against the paper. Verify that the rear and width paper guides are touching the paper. The manual path. Closely inspect the fuser area for jams. None - HP CP3525dn | Service Manual - Page 455
is selected in the software program or printer driver. Use the product control panel to configure the tray to the paper type loaded. Transparencies or glossy paper might not meet supported paper specifications. Use only paper that meets the HP paper specifications for this product. High-humidity - HP CP3525dn | Service Manual - Page 456
that the envelope is loaded correctly. Refer to the HP LaserJet Printer Family Print Media Guide. Configure Tray 1 size for envelopes. Output is curled or wrinkled Output is curled or wrinkled Cause Solution Paper does not meet the specifications for this product. Use only paper that meets the - HP CP3525dn | Service Manual - Page 457
set for duplexing. The HP Color LaserJet CP3525 and HP Color LaserJet CP3525n models do not support automatic 2-sided printing. In Windows, run the automatic configuration feature: 1. Click the Start button, point to Settings, and then click Printers (for Windows 2000) or Printers and Faxes (for - HP CP3525dn | Service Manual - Page 458
environment and print-quality defects occur on HP Tough Paper or Opaque film. With transparencies, set to HIGH when the product is in a highhumidity environment and print-quality defects occur on color transparencies on the first page of a print job. PRE-ROTATION MODE FUSER TEMP MODE With - HP CP3525dn | Service Manual - Page 459
to ALTERNATIVE when color misregistration occurs. TRANSFER CONTROL Set to ALTERNATIVE 1 to reduce primary transfer bias and to problem. PROCESS CLEANING PAGE Generates and processes a fuser cleaning page for the dn printer and HP Color LaserJet CP3525x printer only. ENWW Use manual print - HP CP3525dn | Service Manual - Page 460
damage. Replace any deformed or damaged parts. Poor primary transfer bias contacts on the ITB unit and product. Poor primary charging bias contacts with the print cartridge and product. Clean the contacts of the color that produces the light print. If the problem remains after cleaning, check the - HP CP3525dn | Service Manual - Page 461
drum. Replace the print cartridge of the color that matches the defect. Scratches are present on the circumference of the fuser roller. Replace the fuser. See Fuser on page 179. Scratches are present on the Replace the ITB. See Intermediate circumference of the ITB. transfer belt (ITB) on page - HP CP3525dn | Service Manual - Page 462
roller. Horizontal scratches are Replace the print cartridge of the present on the photosensitive color that matches the defect. drum. Scratches are present on the Replace the ITB. See Intermediate circumference of the ITB. transfer belt (ITB) on page 188. 434 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 463
Problem Sample Image in a particular color does not print in the correct color. Dropouts appear. The toner is not fully fused to the paper. Cause Solution Poor contact exists in the primary charging bias or developing bias contacts between the print cartridge and the product. Clean each - HP CP3525dn | Service Manual - Page 464
cartridge of the affected color. The product has residual media. Remove the residual media. The fuser inlet guide is dirty. Clean the fuser inlet guide. The product is experiencing page skew. See the "Text or graphics are skewed on the printed page" row in this table. The laser/scanner unit - HP CP3525dn | Service Manual - Page 465
the paper-feed-guide unit. The photosensitive drum is dirty. The fuser roller or pressure roller is dirty. Replace the print cartridge. Execute a Pressure roller clean mode. If the dirt does not come off, replace the fuser. See Fuser on page 179. NOTE: Cleaning the fuser with HP tough paper - HP CP3525dn | Service Manual - Page 466
problems Problem Pages print but are totally blank. Pages print very slowly. Pages did not print. Cause Solution The document might contain blank pages. Check the document that you are printing , transparency, cardstock, and HP Tough Paper can slow the print job. Print in smaller batches, on - HP CP3525dn | Service Manual - Page 467
they are compatible and that they are installed correctly with the correct printer drivers. 6. Are other users able to print? The problem may be workstation-specific. Check the workstation network drivers, printer drivers, and redirection (capture in Novell NetWare). 7. If other users are able to - HP CP3525dn | Service Manual - Page 468
use the embedded Web server to check the status of other protocols. See Embedded Web server on page 74. 9. Does the product appear in HP Web Jetadmin or other management application? ● Verify network settings on the Network configuration page. ● Confirm the network settings for the product using the - HP CP3525dn | Service Manual - Page 469
menus, the product prompts you to enter an eight-digit PIN number. The PIN for the HP Color LaserJet CP3525 Series is 09352508. 1. Press the Menu button. 2. Press the down arrow to highlight SERVICE, and then press the OK button. 3. Enter the eight-digit PIN using the alphanumeric keypad. 4. Press - HP CP3525dn | Service Manual - Page 470
add 1 to the result. This is the month. 3. The remainder from the calculation in step 2 is the date. Using the Service ID 12287 as an example, the date conversion is as follows: 1. 12 + 1990 = 2002, so the year is 2002. after installing a new registration roller. 442 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 471
menu. NOTE: Print a configuration page before initializing NVRAM. From the configuration page and supplies status page, gather the following information: ● Total page count and color page count ● Serial number 1. Turn the product on and watch the control panel display. 2. When the display shows - HP CP3525dn | Service Manual - Page 472
444 Chapter 7 Solve problems ENWW - HP CP3525dn | Service Manual - Page 473
8 Parts and diagrams ● Order parts, accessories, and supplies ● Part numbers ● Screws ● How to use the parts lists and diagrams ● External covers, panels, and doors ● Right door assembly ● Internal components ● Assessories ● Alphabetical parts list ● Numerical parts list ENWW 445 - HP CP3525dn | Service Manual - Page 474
the United States, order parts by contacting your local authorized HP service center. ● Supplies and accessories: To order supplies in the U.S., go to www.hp.com/go/ljsupplies. To order supplies worldwide, go to www.hp.com/ghp/buyonline.html. To order accessories, go to www.hp.com/support/cljcp3525 - HP CP3525dn | Service Manual - Page 475
CC497A Part number CC468-67905 CC497-67902 Print cartridges and toner collection unit Product name Product number HP Color LaserJet standard black print CE250A cartridge HP Color LaserJet high capacity black CE250X print cartridge HP Color LaserJet cyan print cartridge CE251A HP Color LaserJet - HP CP3525dn | Service Manual - Page 476
Duplex reverse guide kit Formatter assembly kit Front door kit Fuser (fixing) cleaning kit (8.5x11) Fuser (fixing) 110V service kit Fuser (fixing) 220V service kit HP postcard media insert replacement ITB kit Pick/feed and separation roller kit (Tray 2/3) Secondary transfer assembly kit - HP CP3525dn | Service Manual - Page 477
DE Control panel overlay IT Control panel overlay NO Control panel overlay SV Product number NOTE: The terms fusing and fixing are synonymous. Part number CC468-40036 CC468-40038 CC468-40039 CC468-40040 CC468-40011 CC468-40012 CC468-40013 CC468-40014 CC468-40015 CC468-40016 CC468-40017 CC468 - HP CP3525dn | Service Manual - Page 478
Maintenance kits Product name Product number 110V fuser (fixing) CE484A preventative maintenance kit (PM) 220V fuser (fixing) CE506A preventative maintenance kit (PM) Part number 450 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 479
are for reference only. Screws might vary in size and appearance from those shown in this table. Table 8-1 Common fasteners Example Description Size Part Number Screw, with washer M3X8 XA9-1420-000CN Screw, tapping, truss head M4X10 XB4-7401-005CN Screw, tap Screw, D Screw, tooth washer - HP CP3525dn | Service Manual - Page 480
voltage that is listed in the description column. Doing so will ensure that the part number selected is for the correct all-in-one model. NOTE: In this manual, the abbreviation "PCA" stands for "printed circuit-board assembly." Components described as a PCA might consist of a single circuit board or - HP CP3525dn | Service Manual - Page 481
ENWW How to use the parts lists and diagrams 453 - HP CP3525dn | Service Manual - Page 482
External covers, panels, and doors Figure 8-1 External covers, panels, and doors 11 454 Chapter 8 Parts and diagrams SEE RIGHT DOOR ASSEMBLY 12 ENWW - HP CP3525dn | Service Manual - Page 483
delivery 10 Control panel assembly 11 Front door assembly 11 Front door kit 12 Right door assembly (duplex) 12 Right door assembly (simplex) Part number Qty RC2-5056-000CN 1 RC2-5048-000CN 1 RC2-5052-000CN 1 RC2-5054-000CN 1 RC2-5057-000CN 1 RC2-5059-000CN 1 RC2-5938-000CN - HP CP3525dn | Service Manual - Page 484
Right door assembly Figure 8-2 Right door assembly 1 1a SEE DUPLEX FEED ASSEMBLY 2 456 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 485
Table 8-3 Right door assembly Ref Description 1 Right door assembly (duplex) 1 Right door assembly (simplex) Part number Qty RM1-4957-000CN 1 RM1-5005-000CN 1 ENWW Right door assembly 457 - HP CP3525dn | Service Manual - Page 486
Internal components Internal components (1 of 5) Figure 8-3 Internal components 1 of 5 458 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 487
lower 12 Waste toner detect assembly 13 Waste toner duct assembly 14 Toner collection unit kit 17 Spring, tension 18 Spring, ground 19 Lever, cartridge pressure front 21 Seal, waste toner box 24 Lock, door 26 Lever, box presence detect 27 Spring, compression Part number Qty - HP CP3525dn | Service Manual - Page 488
Internal components (2 of 5) Figure 8-4 Internal components 2 of 5 460 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 489
Base 31 Base assembly 32 Lower cartridge guide assembly 33 Connecting cable assembly 34 Sensor cable assembly 35 Sensor cable assembly 36 Motor/sensor cable assembly 37 Scanner assembly kit (one scanner only) 38 Fan 40 Sensor unit, Tmp/Hum sensor Part number Qty RM1-5746-000CN - HP CP3525dn | Service Manual - Page 490
Internal components (3 of 5) Figure 8-5 Internal components 3 of 5 SEE FUSER SEE REGISTRATION ASSEMBLY SEE SECONDARY TRANSFER ASSEMBLY SEE CASSETTE PAPER PICKUP ASSEMBLY 462 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 491
link 17 Switch lever 18 Shaft 19 Spring, torsion 20 Cartridge lock lever 22 Spring, torsion 28 Interlock link 31 Power switch assembly 45 Switch 46 Secondary transfer (T2) roller kit 47 Rear lock arm assembly 48 Duplex reverse guide kit Part number Qty RC2-4916-000CN 1 - HP CP3525dn | Service Manual - Page 492
Internal components (4 of 5) Figure 8-6 Internal components 4 of 5 SEE PCAs SEE PCAs SEE PCAs SEE PCAs SEE PCAs 464 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 493
cable assembly 19 Scanner flat cable 24 Right door rear hinge 25 MP sensor cable assembly (simplex) 27 MP sensor cable assembly (duplex) Part number Qty RM1-5714-000CN 1 RC2-4916-000CN 1 RK2-2416-000CN 1 RC2-5943-000CN 1 RK2-2506-000CN 1 RM1-5721-000CN 1 RM1-5719-000CN - HP CP3525dn | Service Manual - Page 494
Internal components (5 of 5) Figure 8-7 Internal components 5 of 5 466 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 495
Table 8-8 Internal components (5 of 5) Ref Description Part number Qty 1 Duplexing unit cable assembly RM1-5730-000CN 1 5 Pick up motor cable assembly RM1-5731-000CN 1 7 Lifter drive assembly RM1-4976-000CN 1 8 Drum motor assembly RM1-4988-000CN 3 - HP CP3525dn | Service Manual - Page 496
Cassette Figure 8-8 Cassette 1 468 Chapter 8 Parts and diagrams 2 ENWW - HP CP3525dn | Service Manual - Page 497
Table 8-9 Cassette Ref Description 1 250 sheet cassette 2 Separation roller assembly (250 tray) Part number Qty RM1-4962-000CN 1 CC468-67911 1 ENWW Internal components 469 - HP CP3525dn | Service Manual - Page 498
Cassette paper pickup assembly Figure 8-9 Cassette paper pickup assembly 470 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 499
Table 8-10 Cassette paper pickup assembly Ref Description 1 Pickup roller (250 cassette) Part number Qty CC468-67911 1 ENWW Internal components 471 - HP CP3525dn | Service Manual - Page 500
MP paper pickup assembly Figure 8-10 MP paper pickup assembly 472 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 501
Table 8-11 MP paper pickup assembly Ref Description 1 Pickup roller (MP) Part number Qty CC468-67911 1 ENWW Internal components 473 - HP CP3525dn | Service Manual - Page 502
Registration assembly Figure 8-11 Registration assembly 474 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 503
Table 8-12 Registration assembly Ref Description 1 Registration assembly (simplex) 1 Registration assembly (duplex) Part number Qty RM1-5009-000CN 1 RM1-4969-000CN 1 ENWW Internal components 475 - HP CP3525dn | Service Manual - Page 504
Secondary transfer assembly Figure 8-12 Secondary transfer assembly 476 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 505
Table 8-13 Secondary Transfer assembly Ref Description 1 Secondary transfer assembly (simplex) kit 1 Secondary transfer assembly (duplex) kit Part number Qty CC468-67916 1 CC468-67915 1 ENWW Internal components 477 - HP CP3525dn | Service Manual - Page 506
Delivery assembly Figure 8-13 Delivery assembly 478 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 507
Table 8-14 Delivery assembly Ref Description 1 Paper delivery assembly (simplex) 1 Paper delivery assembly (duplex) Part number Qty RM1-5003-000CN 1 RM1-4970-000CN 1 ENWW Internal components 479 - HP CP3525dn | Service Manual - Page 508
Fusing (fixing) assembly Figure 8-14 Fusing (fixing) assembly (1 of 2) 480 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 509
ENWW Internal components 481 - HP CP3525dn | Service Manual - Page 510
Figure 8-15 Fusing (fixing) assembly (2 of 2) 482 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 511
Table 8-15 Fusing assembly Ref Description 1 Fuser (fixing) 110 V assembly kit 1 Fuser (fixing) 220 V assembly kit Part number Qty CC519-67901 1 CC519-67902 1 ENWW Internal components 483 - HP CP3525dn | Service Manual - Page 512
PCAs Figure 8-16 PCAs 1 2 3 6 5 4 484 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 513
-D PCA assembly 2 Upper HVPS-T PCA assembly 3 DC controller PCA assembly 4 LVPS 110V 4 LVPS 220V 5 Inner connecting PCA assembly 6 Formatter assembly Part number Qty RM1-5680-000CN 1 RM1-5681-000CN 1 RM1-5678-000CN 1 RM1-5685-000CN 1 RM1-5686-000CN 1 RM1-5695-000CN 1 CE859 - HP CP3525dn | Service Manual - Page 514
Assessories 1 x 500 paper feeder Figure 8-17 1 x 500 paper feeder CASSETTE 486 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 515
1 x 500 paper feeder Figure 8-18 1 x 500 paper feeder ENWW Assessories 487 - HP CP3525dn | Service Manual - Page 516
Table 8-17 1 x 500 paper feeder Ref Description 1 1 x 500 sheet feeder replacement kit 9 1 x 500 sheet feeder right door kit Part number Qty CC468-67905 1 CC468-67906 1 488 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 517
Paper feeder main body Figure 8-19 Paper feeder main body ENWW Assessories 489 - HP CP3525dn | Service Manual - Page 518
Paper feeder main body Ref Description 5 Roller assembly paper feeder (500 SF) 6 Roller, paper pick up (500 SF) 13 Drawer connector 14 Drawer connector holder Part number Qty CC468-67911 1 CC468-67911 1 VSI-7257-007-CN 1 RC2-5416-000CN 1 490 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 519
Cassette Figure 8-20 Cassette ENWW Assessories 491 - HP CP3525dn | Service Manual - Page 520
Table 8-19 Cassette Ref Description 1 500 sf cassette Part number Qty RM1-6198-000CN 1 492 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 521
Table 8-20 Alphabetical parts list Description 1 x 500 sheet feeder replacement kit 1 x 500 sheet feeder right door kit 250 sheet cassette 500 sf cassette Base Base Base assembly Cartridge lock lever Cassette paper pick up drive assembly with motor Connecting cable assembly Control panel assembly - HP CP3525dn | Service Manual - Page 522
holder Drum motor assembly Duplex reverse guide kit Duplexing drive assembly Duplexing unit cable assembly Fan Fan Fan cable assembly Formatter assembly Front cable assembly Front door assembly Front door kit Front lock arm assembly Fuser (fixing) 110 V assembly kit Part number RC2-5056-000CN RC2 - HP CP3525dn | Service Manual - Page 523
parts list (continued) Description Fuser (fixing) 220 V assembly kit Fusing (fixing) connecting cable assembly Fusing (fixing) drive assembly with motor (duplex) Fusing (fixing) drive assembly with motor (simplex) Holder, cartridge Lower cartridge guide assembly Lower HVPS-D PCA assembly Part number - HP CP3525dn | Service Manual - Page 524
Table 8-20 Alphabetical parts list (continued) Description Lower pick up guide assembly LVPS 110V LVPS 220V Main drive duplex) Registration assembly (simplex) Right door assembly (duplex) 496 Chapter 8 Parts and diagrams Part number RM1-4980-000CN RM1-5685-000CN RM1-5686-000CN CC468-67918 RM1-5752 - HP CP3525dn | Service Manual - Page 525
only) Scanner flat cable Scanner flat cable Seal, waste toner box Secondary transfer (T2) roller kit Secondary transfer assembly (duplex) kit Secondary transfer assembly (simplex) kit Sensor cable assembly Sensor cable assembly Sensor unit, Tmp/Hum sensor Separation roller assembly (250 tray) Shaft - HP CP3525dn | Service Manual - Page 526
disengagement) Switch Switch arm Switch cable assembly Switch connecting cable assembly Switch lever Tab Tab Toner collection unit kit Toner sensor holder assembly Tray, paper delivery Upper HVPS-T PCA assembly Part number RU6-2568-000CN RU6-2318-000CN RU6-2316-000CN RU6-2237-000CN RC2-5970-000CN - HP CP3525dn | Service Manual - Page 527
Table 8-20 Alphabetical parts list (continued) Description Waste toner detect assembly Waste toner duct assembly Part number RM1-5696-000CN RM1-4977-000CN Table and page Internal components (1 of 5) on page 459 Internal components (1 of 5) on page 459 ENWW Alphabetical parts list 499 - HP CP3525dn | Service Manual - Page 528
parts list Part number Description CC468-67905 1 x 500 sheet feeder replacement kit CC468-67906 1 x 500 sheet feeder right door kit CC468-67907 ITB kit CC468-67910 Toner collection unit Fuser (fixing) 110 V assembly kit Fuser (fixing) 220 V assembly kit Formatter assembly Lever, cartridge - HP CP3525dn | Service Manual - Page 529
Table 8-21 Numerical parts list (continued) Part number Description RC2-4413-000CN Shutter RC2-4415-000CN Lever, shutter RC2-4428-000CN Tab RC2-4780-000CN Seal, waste toner box RC2-4895-000CN Right door rear hinge RC2-4916-000CN Link, door stopper right RC2-4916-000CN Door stopper - HP CP3525dn | Service Manual - Page 530
detect RC2-5954-000CN Lever, cartridge lock RC2-5954-000CN Cartridge lock lever RC2-5955-000CN Holder, cartridge lock lever RC2-5958-000CN unit, Tmp/Hum sensor RK2-2415-000CN Stepping motor, DC (developing disengagement) RK2-2416-000CN Fan RK2-2418-000CN Fan 502 Chapter 8 Parts and - HP CP3525dn | Service Manual - Page 531
Table 8-21 Numerical parts list (continued) Part number Description RK2-2506-000CN Scanner flat cable assembly RM1-4977-000CN Waste toner duct assembly RM1-4979-000CN Base assembly RM1-4980-000CN Lower pick up guide assembly RM1-4984-000CN Lower cartridge guide assembly ENWW Table and - HP CP3525dn | Service Manual - Page 532
connecting PCA assembly Waste toner detect assembly RM1-5697-000CN Power supply switch assembly RM1-5700-000CN Toner sensor holder assembly RM1- Rear cable assembly RM1-5723-000CN Front cable assembly 504 Chapter 8 Parts and diagrams Table and page External covers, panels, and doors; on - HP CP3525dn | Service Manual - Page 533
Table 8-21 Numerical parts list (continued) Part number Description RM1-5730-000CN Duplexing unit cable assembly RM1-5731-000CN Pick up motor cable assembly RM1-5732-000CN Door on page 459 Paper feeder main body on page 490 Internal components (3 of 5) on page 463 Numerical parts list 505 - HP CP3525dn | Service Manual - Page 534
Table 8-21 Numerical parts list (continued) Part number Description WG8-5696-000CN Photo interrupter, TLP1243 WG8-5696-000CN Photo interrupter, TLP1243 Table and page Internal components (3 of 5) on page 463 Internal components (5 of 5) on page 467 506 Chapter 8 Parts and diagrams ENWW - HP CP3525dn | Service Manual - Page 535
A Service and support ● Hewlett-Packard limited warranty statement ● HP's Premium Protection Warranty: LaserJet print cartridge limited warranty statement ● HP Color LaserJet Fuser Kit Limited Warranty Statement ● End User License Agreement ● Customer self-repair warranty service ● Customer support - HP CP3525dn | Service Manual - Page 536
Hewlett-Packard limited warranty statement HP PRODUCT DURATION OF LIMITED WARRANTY HP Color LaserJet CP3525, CP3525n, CP3525dn, CP3525x One-year on-site warranty HP warrants to you, the end-user customer, that HP TO THE SALE OF THIS PRODUCT TO YOU. 508 Appendix A Service and support ENWW - HP CP3525dn | Service Manual - Page 537
environmental specifications for the printer product or (c) exhibit wear from ordinary use. To obtain warranty service, please return the product to place of purchase (with a written description of the problem and print samples) or contact HP customer support. At HP's option, HP will either - HP CP3525dn | Service Manual - Page 538
of the published environmental specifications for the printer product or (c) exhibit wear from ordinary use. To obtain warranty service, please return the product to place of purchase (with a written description of the problem) or contact HP customer support. At HP's option, HP will either replace - HP CP3525dn | Service Manual - Page 539
an imaging or printing product (for example, if the Software is a printer driver, firmware, or add-on), the HP Software may only be used with such product ("HP Product"). Additional restrictions on Use may appear in the User Documentation. You may not separate component parts of the HP Software for - HP CP3525dn | Service Manual - Page 540
including any restrictions on nuclear, chemical, or biological weapons proliferation. 11. RESERVATION OF RIGHTS. HP and its suppliers reserve all rights not expressly granted to you in this EULA. (c) 2007 Hewlett-Packard Development Company, L.P. Rev. 11/06 512 Appendix A Service and support ENWW - HP CP3525dn | Service Manual - Page 541
permits. If assistance is required, you can call the HP Technical Support Center and a technician will help you over the phone. HP specifies in the materials shipped with a replacement CSR part whether a defective part must be returned to HP. In cases where it is required to return the defective - HP CP3525dn | Service Manual - Page 542
and problem description ready. Get 24-hour Internet support www.hp.com/support/cljcp3525 Get support for products used with a Macintosh computer www.hp.com/go/macosx Download software utilities, drivers, and electronic information www.hp.com/go/cljcp3525_software Order additional HP service or - HP CP3525dn | Service Manual - Page 543
B Product specifications ● Physical specifications ● Performance specifications ● Electrical specifications ● Acoustic specifications ● Environmental specifications ● Paper and print media specifications ● Skew specifications ENWW 515 - HP CP3525dn | Service Manual - Page 544
(14.1 in) 739 mm (29.1 in) HP Color LaserJet CP3525dn 358 mm (14.1 in) 739 mm (29.1 in) HP Color LaserJet CP3525x 520 mm (20.5 in) 739 mm (29.1 in) Width 822 mm (32.4 in) 822 mm (32.4 in) 822 mm (32.4 in) Performance specifications Print speed Resolution ● Prints up to 30 pages per minute - HP CP3525dn | Service Manual - Page 545
preliminary data. See www.hp.com/support/cljcp3525 for current information. 3 Configuration tested: HP Color LaserJet CP3525 printer printing on A4-size paper in simplex mode Environmental specifications Environmental condition Temperature (product and print cartridge) Relative humidity Altitude - HP CP3525dn | Service Manual - Page 546
≤ 2.0 mm N/A 1 Xerox 4024 (#20) should be used for measurement. 2 Performance for 4x6 media fed from Tray 3 using adapter is 1.0 mm / 130 mm 518 Appendix B Product specifications ENWW - HP CP3525dn | Service Manual - Page 547
C Regulatory information ● FCC regulations ● Declaration of Conformity ● Certificate of volatility ● Safety statements ENWW 519 - HP CP3525dn | Service Manual - Page 548
a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are installed and used in accordance with the instructions, it may cause harmful interference to radio : Any changes or modifications to the printer that are not expressly approved by HP could void the user's authority to - HP CP3525dn | Service Manual - Page 549
Hewlett-Packard Company 11311 Chinden Boulevard, Boise, Idaho 83714-1021, USA declares that the product Product Name: Regulatory Model Number:2) HP Color LaserJet CP3525 series BOISB-0802-00 Product Options: Including: CE522A - Optional 500-Sheet Paper and Heavy Media Tray ALL Print Cartridges - HP CP3525dn | Service Manual - Page 550
HP Color LaserJet CP3525 Series printer. The product can have an optional HP High-Performance Secure Hard Disk either internally or as part of memory. The total can differ by bundle. This RAM contains job specific information and information stored in the RAM disk. The information is fixed - HP CP3525dn | Service Manual - Page 551
in the United States. The device is certified as a "Class 1" laser product under the U.S. Department of Health and Human Services (DHHS EMC statement (Korea) Laser statement for Finland Luokan 1 laserlaite Klass 1 Laser Apparat HP Color LaserJet CP3525, CP3525n, CP3525dn, CP3525x, laserkirjoitin on - HP CP3525dn | Service Manual - Page 552
ylittävälle näkymättömälle lasersäteilylle. VARNING ! Om apparaten används på annat sätt än i bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1. HUOLTO HP Color LaserJet CP3525, CP3525n, CP3525dn, CP3525x - kirjoittimen sisäll - HP CP3525dn | Service Manual - Page 553
10 C cabinet/stand specifications, physical 515 cable, USB part number 448 cables USB, troubleshooting 438 calibrate the product 359 calibration information, printed 363 reset by NVRAM initialization 443 Canadian DOC regulations 523 capacity output bins 4 cartridges non-HP 81 ordering through - HP CP3525dn | Service Manual - Page 554
DC controller 107 diagnostic tests 341 diagrams of 343 duplexing unit 150 engine-control system 106 fuser 115 image formation, use during 121 intermediate transfer belt (ITB) 130 paper feeder 155 pickup, feed, and delivery 136 print cartridge 127 protection for 114, 116 configuration page 319 - HP CP3525dn | Service Manual - Page 555
by NVRAM initialization 443 sample 396 view or print 395 exhaust fans 111 Explorer, versions supported embedded Web server 74 F faded print 432 failure detection drive circuit 118 fuser 117 lasers and scanners 120 low-voltage power supply 114 motors 110 See also jams fans cartridge, removing 215 DC - HP CP3525dn | Service Manual - Page 556
heaters, fuser 115 help, Show Me How menu 14 high-voltage power supply bias generation 112 circuits 112 operations 111 removing, lower 248 removing, upper 279 See also power supply HP Customer Care 514 HP Easy Printer Care opening 71 options 71 using 71 HP fraud hotline 81 HP Jetdirect print server - HP CP3525dn | Service Manual - Page 557
517 non-HP supplies 81 Novell/NetWare information 367 NVRAM (nonvolatile memory) initialization 443 NVRAM errors 381 O on/off switch, locating 6 online support 514 operating environment specifications 517 operation sequence 105 optimize print quality calibrate the product 359 ordering part numbers - HP CP3525dn | Service Manual - Page 558
324 diagnostic test, manual 334 stop movement for testing 340 paper-path test, sensors 340 parameters, EP, troubleshooting 362 part numbers memory 447 print cartridges 447 screws 451 parts 445 parts lists and diagrams covers, panels, and doors 454 HP Color LaserJet CP3525 454 internal components - HP CP3525dn | Service Manual - Page 559
transfer roller 184 separation roller (tray 2) 183 toner-collection sensor 220 toner-collection unit 173 tools, required 165 tray cassette 178 upper-rear cover 209 repeating defects, troubleshooting 358 replacing parts 164 reset button 10 resets menu 39 resolution specifications 3 troubleshooting - HP CP3525dn | Service Manual - Page 560
, removing 227 tests, manual 325 toner-collection sensor, removing 220 sequence HP Easy Printer Care 71 Status button 10 status page 319 stepping motors 110 Stop button 10 stop printing for test 340 storage cabinet specifications, physical 515 storing print cartridges 81 streaks, troubleshooting - HP CP3525dn | Service Manual - Page 561
temperature, fuser components 117 timing chart 355 toner image formation, use during 122 loose, troubleshooting 435 patterns for calibration 134 smeared, troubleshooting 436 toner cartridges. See print cartridges toner collection unit removing 173 replacing 86 tools, required 165 transfer processes - HP CP3525dn | Service Manual - Page 562
cartridges 509 product 508 warranty date information 441 Web browser requirements embedded Web server 74 Web Jetadmin firmware updates 99 Web sites customer support 514 fraud reports 81 HP Web Jetadmin, downloading 77 Macintosh customer support 514 ordering supplies 446 white spots, troubleshooting - HP CP3525dn | Service Manual - Page 563
- HP CP3525dn | Service Manual - Page 564
© 2008 Hewlett-Packard Development Company, L.P. www.hp.com *CC468-90963* *CC468-90963* CC468-90963
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HP Color LaserJet CP3525 Series Printer
Service Manual
www.hp.com/support/cljcp3525
Theory of operation
Removal and replacement
Solve problems
Parts list