HP LaserJet 4v/mv Service Manual

HP LaserJet 4v/mv Manual

Get HP LaserJet 4v/mv PDF manuals and user guides View all HP LaserJet 4v/mv manuals
Add to My Manuals
Save this manual to your list of manuals

HP LaserJet 4v/mv manual content summary:

  • HP LaserJet 4v/mv | Service Manual - Page 1
    Service Manual HP LaserJet 4V / 4MV (C3141A / C3142A)
  • HP LaserJet 4v/mv | Service Manual - Page 2
    except as allowed under the copyright laws. Publication number C3141-90929 First edition, July 1994 Printed in USA Warranty The information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not
  • HP LaserJet 4v/mv | Service Manual - Page 3
    Conventions NOTE CAUTION WARNING! This manual uses the following conventions: Color is used to emphasize items which are important to the material under discussion. The names of major printer parts and assemblies are Capitalized. Bold is used for emphasis, particularly in situations where italic
  • HP LaserJet 4v/mv | Service Manual - Page 4
    units (FRUs). Assemblies are grouped by location in the printer. 7 Troubleshooting Diagnose printer problems here. Preliminary troubleshooting table is followed by error messages, image defect samples, and diagnostic tools. 8 Parts and Diagrams Look here to find any field replaceable unit
  • HP LaserJet 4v/mv | Service Manual - Page 5
    5-19 Figure 5-8 Primary Charging Roller 5-20 Figure 5-9 Image Writing 5-21 Figure 5-10 Image Development 5-22 Figure 5-11 Image Transferring 5-23 Figure 5-12 Image Fusing 5-24 Figure 5-13 Paper Path 5-25 Figure 5-14 Clutches and Sensors 5-26 Figure 5-15 General Timing Diagram 5-29 Figure
  • HP LaserJet 4v/mv | Service Manual - Page 6
    Transfer Roller Assembly 6-25 Figure 6-20 Fusing Assembly 6-26 Figure 6-21 Fuser Inlet Guide 6-27 Figure 6-22 Paper Guide Plate Assembly 6-28 Figure 6-23 MP Guide Plate 6-29 Figure 6-24 MP Drive Gears 6-30 Figure 6-25 Fuser Door 6-31 Figure 6-26 MP Tray 8-24 Figure 8-10 Internal Components (
  • HP LaserJet 4v/mv | Service Manual - Page 7
    1-19 Printer and Toner Cartridge Environmental Conditions . . 2-4 Indicator Lights 3-4 Control Panel Keys 3-5 Settings and Defaults 3-6 Control Panel Menu Map 3-7 Printing Menu Items 3-8 PCL Menu Items 3-9 Job Menu Items 3-10 Configuration Menu Items 3-11 Memory Configuration Items
  • HP LaserJet 4v/mv | Service Manual - Page 8
    Table 8-10 Table 8-11 Table 8-12 Table B-1 Faulty Registration 7-29 Smeared Print 7-30 Compressed Print 7-30 Image Skew 7-30 High Voltage System Checks 7-34 Causes of Paper Curl 7-35 Accessories and Supplies 8-5 Accessories and Supplies - continued 8-6 Common Fasteners Used in the Printer
  • HP LaserJet 4v/mv | Service Manual - Page 9
    Assembly Locations (2 of 2 1-15 Service Approach 1-16 Ordering Parts 1-16 Phone numbers for the various sources are 1-16 Exchange Program 1-16 Consumables 1-16 Toner Cartridge Life 1-17 Refilled Toner Cartridges 1-18 Recycling Toner Cartridges 1-18 Related Documentation and Training Media
  • HP LaserJet 4v/mv | Service Manual - Page 10
    Technical Assistance 1-20 HP AUDIO-TIPS 1-20 HP FIRST 1-20 HP FIRST, U.S 1-20 HP FIRST, Europe 1-20 HP CompuServe Forum 1-21 North American Response Center (NARC 1-21 Other Areas 1-21 Warranty Statement 1-22 Warranty 1-22 One Year Return to HP Authorized Repair Station 1-22 Exclusions 1-
  • HP LaserJet 4v/mv | Service Manual - Page 11
    1 Information Table 1-1 Printer Features Printer Features Features LaserJet 4V (C3141A) LaserJet 4MV (C3142A) Print Speed 16 ppm letter Keys, 16 Character VFD Display EconoMode (toner saving) Yes Yes 1 Printer memory is optimized with Memory Enhancement Technology (MEt). 2 SIMMS available
  • HP LaserJet 4v/mv | Service Manual - Page 12
    MP Tray N/A 100 sheets 17 to 28 pounds Maximum 11.7 x 17.7 in. (64 to 105 g/m2) (297 x 450 mm) Minimum 3.9 x 5.8 in. (100 x 148 mm) Paper to 28 pounds Legal only (64 to 105 g/m2) B4 B5 Lower Cassette C3163A C3164A C3760A 250 Sheets 17 to 28 pounds JIS B4 only (64 to 105 g/m2) 250 Sheets
  • HP LaserJet 4v/mv | Service Manual - Page 13
    the HP LaserJet 4V printer. The serial number contains information about the Country of Origin, the Revision Level, the Production Code, and production number of the printer. The rear labels also contain power rating and regulatory information as shown in Figure 1-1. C3141A C3141A HEWLETT-PACKARD
  • HP LaserJet 4v/mv | Service Manual - Page 14
    g) empty * Some quantity of toner will reside in the waste toner area of a toner cartridge when the toner supply is exhausted. Therefore, using toner cartridge weight may be an unreliable indication of remaining toner supply. Electrical Specifications Volts 120 Vac ± 10% 100 Vac ± 10% Freq 50/60
  • HP LaserJet 4v/mv | Service Manual - Page 15
    LPA dB(A) Standby LPA dB(A) Power Save LPA dB(A) Bystander 1m (per ISO 9296) Printing LPA dB(A) Standby LPA dB(A) Power Save LPA dB(A) Sound Power (per ISO 9296) Printing LWAD Standby LWAD Power Save LWAD 55 db 38 db 33 db 51 db 34 db 29 db 6.6 bels (A) 4.9 bels (A) 4.4 bels
  • HP LaserJet 4v/mv | Service Manual - Page 16
    are in the HP LaserJet Printer Family Paper Specification Guide, HP Part No. 5002-1801 (See "Related Documentation and Training Media" later in this chapter). CAUTION Paper To achieve the best possible print quality and avoid paper jams, follow these guidelines for selecting paper: • Use only
  • HP LaserJet 4v/mv | Service Manual - Page 17
    into direct contact with any part of the printer. The MP Tray is recommended for printing adhesive labels. A wide selection of suitable labels is available through Hewlett-Packard. A list of available sizes is located in the HP LaserJet Printer Family Paper Specification Guide, HP Part No. 5002-1801
  • HP LaserJet 4v/mv | Service Manual - Page 18
    print media: • Store paper in anything on top of media, regardless of whether the paper is packaged or unpackaged. • Store envelopes in a humidity extremes. • DO NOT store printed documents in vinyl folders (which may based solvents. Shipping Print Media When shipping print media through different
  • HP LaserJet 4v/mv | Service Manual - Page 19
    Control Panel 3 Output Bin 4 Adjustable Paper Stop 5 250 sheet ledger (11x17) or A3 Paper Cassette 6 ON/OFF Switch 7 250 sheet Letter or A4 Paper Cassette 8 Front Cover Release Button 9 Multipurpose (MP) Tray 10 MP Tray Extension 11 MP Tray Paper Width Guides 12 Fuser Door Product Information 1-11
  • HP LaserJet 4v/mv | Service Manual - Page 20
    Locations (2 of 2) 1 2 3 4 5 67 8 Figure 1-3 Rear and Left Side View 1 Optional 42.8 Mbyte Disk Accessory Location 2 Parallel Bi-Tronics Interface 3 SIMM Slots 4 Multiple I/O (MIO) slot 5 Power Supply Connector 6 Dust Cover for 250 sheet ledger (11x17) or A3 Paper Cassette 7 Serial Number
  • HP LaserJet 4v/mv | Service Manual - Page 21
    6 Figure 1-4 1ASYDOOR 7 Front View with Front Cover Open (with toner cartridge removed) 1 Print Density Dial 2 Arrow guide for installing toner cartridge in printer 3 Toner cartridge cavity 4 Fusing Assembly 5 Registration Roller 6 Transfer Roller 7 Multipurpose (MP) Tray Product Information 1-13
  • HP LaserJet 4v/mv | Service Manual - Page 22
    Locations (1 of 2) 1 Card Cage Assembly 2 Main Motor 3 Power Supply Unit 4 Fusing Assembly Cable 5 Main Drive Assembly 6 Cassette Pickup Roller Clutch 7 Registration Roller Clutch 8 Front Door 9 Cassette Pickup Roller (under plate) 10 Exhaust Fan (FM1) 11 Delivery Assembly 1-14 Product Information
  • HP LaserJet 4v/mv | Service Manual - Page 23
    1ASSYSEC Internal Assembly Locations (2 of 2) 1 8 7 2 3 4 5 6 Internal Assembly Locations (2 of 2) 1 Output Bin 2 Delivery Assembly 3 Fusing Rollers 4 Transfer Roller 5 Standard Paper Cassette 6 Optional Lower Paper Cassette 7 Cassette Pickup Roller 8 Toner Cartridge Product Information 1-15
  • HP LaserJet 4v/mv | Service Manual - Page 24
    may be repaired at the subassembly level. PCA component replacement is not supported by Hewlett-Packard. Ordering Parts Field replaceable part numbers are found in Chapter 8 of this manual. Replacement parts may be ordered from HP's Service Materials Organization (SMO), or Support Materials Europe
  • HP LaserJet 4v/mv | Service Manual - Page 25
    (C3900A) is designed to simplify replacement of the major "consumable" parts. The toner cartridge contains the printing mechanism and a supply of toner. At 5% page coverage, a toner cartridge will print approximately 7500 pages (see Figure 1-7). NOTE Sample 5% Page Coverage When regularly
  • HP LaserJet 4v/mv | Service Manual - Page 26
    in refilled cartridges. • The print quality of HP LaserJet toner cartridges influences the customer's perception of the printer. Hewlett-Packard has no control over the actual print quality of a refilled toner cartridge. Recycling Toner Cartridges In order to reduce waste, Hewlett-Packard utilizes
  • HP LaserJet 4v/mv | Service Manual - Page 27
    Description Part Number SMO SME HPD HP LaserJet Family Quick Reference Service Guide 5961-0531 XX HP LaserJet 4V and 4MV Printers User's Manual1 C3141-90901 X X HP PCL5 Printer Language Technical Reference Information Package 5961-0601 XX HP LaserJet Printer Family Paper 5002
  • HP LaserJet 4v/mv | Service Manual - Page 28
    or fax card. Service related information includes: • Service notes (HP Authorized dealers) • Application notes • Product Data Sheets • Material Safety Data Sheets (MSDS) • Typeface and accessory information • Printer support software information • Toner information • Driver request form and Software
  • HP LaserJet 4v/mv | Service Manual - Page 29
    members can download a variety of support materials including product data sheets, software application notes, and printer drivers for many popular software applications. Members may also post and reply to questions in an interactive format. To access the HP Forum, type GO HP at any prompt. For more
  • HP LaserJet 4v/mv | Service Manual - Page 30
    of non-HP toner cartridges (see the following explanation), SIMM memory boards, or interface boards. The use of non-Hewlett-Packard toner cartridges does not affect either the warranty or any maintenance contract purchased from HP. However, if an HP LaserJet printer failure or if printer damage is
  • HP LaserJet 4v/mv | Service Manual - Page 31
    2 Site Requirements Chapter Contents Operating Environment 2-3 Space Requirements 2-4 Environmental Requirements 2-4 Site Requirements 2-1
  • HP LaserJet 4v/mv | Service Manual - Page 32
    2-2 Site Requirements
  • HP LaserJet 4v/mv | Service Manual - Page 33
    , open flames, or ammonia fumes. If the printer is placed near a window, make sure the window has a curtain or blind to block any direct sunlight. • Install with enough space around the printer for proper access and ventilation (see Figure 2-1). • Install printer away from the direct flow of exhaust
  • HP LaserJet 4v/mv | Service Manual - Page 34
    Requirements Table 2-1 Environmental Requirements Keep the printer within the following environmental conditions for optimum performance. Printer and Toner Cartridge Environmental Conditions Item Temperature Humidity Operating 10° to 32.5° C (50° to 90.5° F) 20 to 80% RH (with no condensation
  • HP LaserJet 4v/mv | Service Manual - Page 35
    Menu 3-10 Configuration Menu 3-11 Memory Configuration Menu 3-12 Parallel Menu 3-13 Test Menu 3-14 Service Mode 3-15 Power Save 3-15 Setting the Page Count and Serial Number 3-17 Setting the Cold Reset Default Paper Size 3-18 Other Service Mode Items 3-18 Testing the Printer 3-19 Printing
  • HP LaserJet 4v/mv | Service Manual - Page 36
    3-2 Operating Overview
  • HP LaserJet 4v/mv | Service Manual - Page 37
    of a 16-character display panel, three indicator lights, and eight keys, three of which have alternate functions. Operating 3 Overview Ready On Line Form Feed MP Paper Size Enter Menu Item + Shift Reset Continue - Control Panel Layout Operating Overview 3-3
  • HP LaserJet 4v/mv | Service Manual - Page 38
    off line; press [Form]Feed]; press [On Line] to place printer back on line. Buffered data is printing. No buffered data in printer. Control Panel Keys You must take the printer off line to use control panel keys, except for the MP Paper Size and keys related to its operation. Each key in the top
  • HP LaserJet 4v/mv | Service Manual - Page 39
    the On Line and Ready indicator lights must be lit. [Form Feed] Prints any data remaining in the page buffer. Does not send a blank sheet of paper through the printer. [MP Paper Size] Only active when MP Tray is set to cassette (select MP TRAY=CASS in the Configuration Menu). Selects size of
  • HP LaserJet 4v/mv | Service Manual - Page 40
    Factory default Explanation A value set for the current print job by your software application. For example, a request from your software to print three copies instead of the control panel default value of one copy is a temporary setting. The printer continues to use the temporary setting until you
  • HP LaserJet 4v/mv | Service Manual - Page 41
    When options (such as the PostScript language) are installed in the printer, new menus or menu items automatically are added in the appropriate menus. Table 3-4 Control Panel Menu Map PRINTING MENU PCL MENU PS MENU COPIES PAPER ORIENTATION FORM MANUAL FEED RET FONT SOURCE FONT NUMBER PITCH or
  • HP LaserJet 4v/mv | Service Manual - Page 42
    from 5 to 128 lines, for default paper size. Scrolls in increments of 1 line. MANUAL FEED OFF*, ON Available only through MP Tray. When Manual Feed is on and the MP Tray is empty, the printer goes off line when it receives a print job and displays MF FEED paper size or ME FEED envelope size. When
  • HP LaserJet 4v/mv | Service Manual - Page 43
    printer default font and symbol set. Printer Control Language (PCL) is HP printer example). 0 to 999 The printer assigns a number to each soft font that is currently in the printer. Mn SIMM Module; n=SIMM slot you select. Pitch: 10.00* Pitch: For fixed PC-8 or PC-850 is recommended for line draw
  • HP LaserJet 4v/mv | Service Manual - Page 44
    the amount of time the printer is idle before the fuser shuts down. The printer automatically starts warming the fuser when you send a print job to the printer, press a control panel key, load or remove paper, or open the top door. NOTE: A ten second interval is also available in Service Mode (see
  • HP LaserJet 4v/mv | Service Manual - Page 45
    only as a manual feed tray. NONE* MP PC LC and combinations Locks out a tray or a combination of trays so the printer will not draw paper. Lock-out options depend on how the MP Tray is configured and whether an optional 500-sheet Lower Cassette (LC) is installed. When the MP Tray = MANUAL or FIRST
  • HP LaserJet 4v/mv | Service Manual - Page 46
    and up When Resource Saving is set to ON, each installed personality (for example, PCL and PostScript) is added as a menu item. You can increase memory in increments of 100 KBytes up to the maximum. *Factory default. **The HP LaserJet 4MV printer is set to OFF at the factory. 3-12 Operating
  • HP LaserJet 4v/mv | Service Manual - Page 47
    software application. Table 3-10 Parallel Menu Items Item HIGH SPEED Options YES* NO ADV FNCTNS ON* OFF *Factory default. Explanation The speed at which data is transmitted to the printer. YES sets the Bi-Tronics parallel interface to run at a higher data rate supported by newer computers. NO
  • HP LaserJet 4v/mv | Service Manual - Page 48
    available in the printer (both internal and accessory) for PCL or Adobe PostScript print jobs. Prints a page that illustrates printer features (PCL or Adobe PostScript). Prints PostScript-specific information, including current settings, printable area, and memory configuration. 3-14 Operating
  • HP LaserJet 4v/mv | Service Manual - Page 49
    warmed up completely.) After the printer has warmed up and passed the self test, SERVICE MODE is displayed. To exit the Service Mode press the [On Line] key. Power Save An additional 10 second time interval is added to the Power Save function in Service Mode. With Service Mode displayed, press MENU
  • HP LaserJet 4v/mv | Service Manual - Page 50
    3SERVMOD On Line Form Feed Enter Wait 5 seconds Form Feed Enter Menu Item Menu Figure 3-2 Service Mode Menus 3-16 Operating Overview
  • HP LaserJet 4v/mv | Service Manual - Page 51
    print a control panel self test to verify the current page count and serial number of the printer, if possible. If it is not possible to print to SERVICE MODE. Use the procedure described above to set the serial number in the printer memory. 8 Press [On Line] a second time to exit Service Mode.
  • HP LaserJet 4v/mv | Service Manual - Page 52
    A4 paper. 5 Press [Enter] to save your selection. 6 Press [On Line] to return the display to SERVICE MODE. 7 Press [On Line] a second time to exit Service or cold reset default, described above. Other Service Menu Items Default Description FALSE Inhibits printing of PCL Demo Page when set to
  • HP LaserJet 4v/mv | Service Manual - Page 53
    checks its internal controller and I/O interface, then prints a test page. You can review the self test printout to verify proper installation of such options as paper cassettes or personalities. Printing a Self Test Page 1 Press [On Line] to take the printer off line. 2 Press [Menu] until TEST MENU
  • HP LaserJet 4v/mv | Service Manual - Page 54
    status. 10 I/O Buffering and Resource Saving: Information about the current configuration appears here. If the printer does not have enough memory installed to enable I/O Buffering or Resource Saving, the amount of additional memory needed appears here. 11 Print Pattern: Illustrates print density
  • HP LaserJet 4v/mv | Service Manual - Page 55
    3SELFTST 1 Operating 3 Overview 2 3 4 5 6 7 8 C3295A 9 10 11 13 12 Figure 3-3 Self Test Printout (printed in Service Mode) Operating Overview 3-21
  • HP LaserJet 4v/mv | Service Manual - Page 56
    Figure 3-4 3ENGTEST Engine Test The engine test print can be used to verify that the print engine is functioning correctly. The Formatter PCA is completely bypassed during an engine test. To print an engine test, use a non-metallic object to press the engine test button (see Figure 3-4). A single
  • HP LaserJet 4v/mv | Service Manual - Page 57
    all data from the printer memory and sets all the defaults back to the factory settings. Performing a Cold Reset resets the JetDirect configuration. To avoid making changes to your configuration remove the JetDirect card before performing a cold reset. If possible print a control panel self-test
  • HP LaserJet 4v/mv | Service Manual - Page 58
    is having problems. To access the Menu of Resets: 1 Press [On Line] to take the printer off line. 2 Hold down both [Shift] and [Reset] for at least 10 seconds page) and restores most of the printer factory default settings. Items in the Config, Memory Configuration and Parallel Menus are not reset
  • HP LaserJet 4v/mv | Service Manual - Page 59
    4 Maintenance Chapter Contents Cleaning the Printer 4-3 Cleaning Spilled Toner 4-4 NOTE This printer requires no regular maintenance except for routine cleaning procedures, described in this chapter. Maintenance 4-1
  • HP LaserJet 4v/mv | Service Manual - Page 60
    4-2 Maintenance
  • HP LaserJet 4v/mv | Service Manual - Page 61
    touching the fuser. It may be HOT. CAUTION To avoid permanent damage to the toner cartridge, do not use ammonia-based cleaners on or around the printer. Do not touch the transfer roller with your fingers. Contaminants on the roller can cause print quality problems. 4 Maintenance Maintenance 4-3
  • HP LaserJet 4v/mv | Service Manual - Page 62
    free cloth. Fuser Assembly Use a water-dampened lint-free cloth. Cleaning Spilled Toner Defective toner cartridges can develop leaks. In addition, after a paper jam has occurred, there may be some toner remaining on the rollers and guides inside the printer. The pages that print immediately after
  • HP LaserJet 4v/mv | Service Manual - Page 63
    5-6 Toner Cartridge Microswitch (SW501 5-6 Print Density Adjustment 5-6 DC Controller System 5-7 DC Power Distribution 5-7 Laser and Scanner Drive 5-8 Paper Motion Monitoring and Control 5-8 Clutches 5-8 Engine Test Microswitch (SW7001 5-8 Motors 5-9 Formatter System 5-10 Power
  • HP LaserJet 4v/mv | Service Manual - Page 64
    21 Image Developing 5-22 Image Transferring 5-23 Image Fusing 5-24 Paper Feed System 5-25 Paper Path 5-25 Clutches and Sensors 5-26 Printing from the Paper Cassette 5-27 Printing from the MP Tray 5-27 Printing from the Optional Lower Cassette 5-27 Paper Jam Detection 5-27 Basic Sequence of
  • HP LaserJet 4v/mv | Service Manual - Page 65
    presents a generalized functional overview of the printer and the printing processes. The following printer systems are discussed: • Power Supply System • DC Controller System • Formatter PCA • Control Panel • Interface PCA • Image Formation System • Paper Feed System • Basic Sequence of Operation
  • HP LaserJet 4v/mv | Service Manual - Page 66
    ) Overcurrent Protection +24V +5V /RELE /FUSE1ON /FUSE2ON +24V Fuser Heater +24V +5V Laser / Scanner Unit +12V +24V +5V /RELE /FUSE1ON /FUSE2ON Assembly +24V Interface PCA Primary Charging Roller Developing Bias Transfer Charging Roller Toner Sensor Sensors, Clutches, Solenoids Control Panel
  • HP LaserJet 4v/mv | Service Manual - Page 67
    ON. A toner cartridge must be installed and the front door closed before voltage is supplied to the Power Supply circuits, the DC Controller, the Main Motor, or the Fusing Assembly. Overcurrent/Overvoltage Protection There are three overvoltage /overcurrent devices in this printer
  • HP LaserJet 4v/mv | Service Manual - Page 68
    error is issued by the Formatter causing the display panel message 14 NO TONER CART to be displayed. A toner cartridge must be installed and the front door must be closed before the printer can resume printing. Print Density Adjustment Adjusting print density affects the line width (boldness) of the
  • HP LaserJet 4v/mv | Service Manual - Page 69
    systems and functions are controlled by the DC Controller: • DC Power Distribution • Laser and Scanner Drive • Paper Motion Monitoring and Control • Clutches, (Registration, Cassette Pickup, and MP Tray Pickup) • Engine Test Microswitch • Motors (Main Drive, Scanner, and Fans) Figure 5-2 shows
  • HP LaserJet 4v/mv | Service Manual - Page 70
    manually through an access hole at the rear of the printer. This switch causes the print engine to perform a self test diagnostic which bypasses the Formatter PCA and print a full page of black parallel lines. This test is useful for troubleshooting printer problems because it isolates the print
  • HP LaserJet 4v/mv | Service Manual - Page 71
    Initial Rotation period (following initial power-ON), the Print period, or the Last Rotation Period, or whenever the printer front door is opened and closed. The Scanner high speed during the Initial Rotation, Print and Last Rotation periods. The exhaust fans turn off in the Power Save mode after the
  • HP LaserJet 4v/mv | Service Manual - Page 72
    . • Receiving and processing print data from the various printer interfaces. • Monitoring front control input and relaying printer status information (through the front control and the Bi-Directional I/O). • Developing and coordinating data placement and timing with the print engine. • Storing font
  • HP LaserJet 4v/mv | Service Manual - Page 73
    occur: • A job is printed. • A control panel key is pressed. • The printer front door is opened and closed. • A paper cassette is removed or installed. Printer error messages override the Power Save message. The printer will enter Power Save mode at the appropriate time, but the error message will
  • HP LaserJet 4v/mv | Service Manual - Page 74
    and some software applications. The default setting is Off. Normal Mode, Medium Density EconoMode, Medium Density NOTE EconoMode vs Normal Mode EconoMode does not affect print speed, memory usage, or extend toner cartridge life. 5-12 Functional Overview
  • HP LaserJet 4v/mv | Service Manual - Page 75
    (MIO) The optional Modular I/O card can be installed in the slot provided on the Formatter PCA. It provides automatic I/O switching between multiple computers or networks connected to the printer. The LaserJet 4MV printer includes the J2552A HP JetDirect Multi-protocol Network Card with LocalTalk
  • HP LaserJet 4v/mv | Service Manual - Page 76
    The SIMM slots may be used to add memory, fonts, the PostScript Language SIMM, or firmware upgrades. The optional PostScript language SIMM can be installed in any of the SIMM slots on the Formatter PCA. It allows the printer to automatically receive and print files configured in the Adobe PostScript
  • HP LaserJet 4v/mv | Service Manual - Page 77
    page image in page buffer memory before physically moving the paper through the printer. This process ensures that the entire page will be printed. Page Protect applies only to PCL printing. The default setting is Auto. PJL Overview Printer Job Language (PJL) is an integral part of configuration, in
  • HP LaserJet 4v/mv | Service Manual - Page 78
    Chapter 3, and to "Printer Message Troubleshooting" in Chapter 7, for more information. The eight keys on the keypad are used for a variety of functions (see Chapter 3). Keyboard overlays are available in any of several different languages (see Chapter 8 for part
  • HP LaserJet 4v/mv | Service Manual - Page 79
    4. Image Developing 5. Image Transferring 6. Image Fusing Toner Cartridge Drum Cleaning Print Delivery Drum Conditioning Image Fusing Image Writing Laser / Scanner Image Developing Image Formation Block Diagram Image Transferring Front Door Paper Delivery Functional 5 Overview Functional
  • HP LaserJet 4v/mv | Service Manual - Page 80
    drum, primary charging roller, developing station, toner cavity, and cleaning station. Including these components that wear, degrade, or are consumed in the replaceable toner cartridge eliminates the need for a service call when replacement is required. Toner Cartridge/High Voltage Power Supply
  • HP LaserJet 4v/mv | Service Manual - Page 81
    blade is in contact with the surface of the drum at all times. As the drum rotates during printing, excess toner is stored in the waste toner receptacle. Waste Toner Receptacle Cleaning Blade Toner Cartridge Drum Cleaning Photosensitive Drum Functional 5 Overview Functional Overview 5-19
  • HP LaserJet 4v/mv | Service Manual - Page 82
    the drum with the primary charging roller, located in the toner cartridge. The primary charging roller is coated with conductive rubber with roller to create a uniform negative potential on the drum surface. The amount of DC voltage is modified by the print density setting. Primary charging roller
  • HP LaserJet 4v/mv | Service Manual - Page 83
    laser diode projects the beam onto the rotating six-sided scanning mirror. As the mirror rotates, the beam reflects off the mirror, through a set of focusing lenses, through a slot in the rear of the toner cartridge ) Laser Driver Cylindrical inch. This is how the printer achieves its 600 x 600
  • HP LaserJet 4v/mv | Service Manual - Page 84
    and the magnetic core of the cylinder, and to increase the repelling action of toner against the areas of the drum not exposed to laser light. This AC potential improves density and contrast. Image Development The Print Density control (behind the front door) adjusts the DC bias of the developing
  • HP LaserJet 4v/mv | Service Manual - Page 85
    Figure 5-11 5TRNSTG Image Transferring During the transferring process, the toner image on the drum surface is transferred to the paper. A positive charge applied to the back of the paper, by the transfer roller causes the negatively charged toner on the drum surface to be attracted to the page.
  • HP LaserJet 4v/mv | Service Manual - Page 86
    print mode. If the fusing system overheats (about 220° C), a relay opens, interrupting power to the fusing heater, causing a fuser error (50 SERVICE) message. If the fusing system exceeds 240° C, the thermal fuse will open, cutting off power to the fuser. Halogen Heater Fusing Roller Toner Paper
  • HP LaserJet 4v/mv | Service Manual - Page 87
    Rollers Toner Cartridge Registration Rollers Cassette Pick-up Roller Fusing Rollers Transfer Charging Roller MP Tray Pick-up Roller Paper Cassette Lower Cassette Pickup Rollers Optional Lower Cassette Lower Cassette Paper Guide Paper Path The Paper Cassette and Lower Cassette Paper Guide
  • HP LaserJet 4v/mv | Service Manual - Page 88
    in the MP Tray. Senses paper in the fuser area. Senses position of the printer front door. Senses paper in the registration roller area. Senses presence of paper in the lower cassette. Engages the registration rollers. Engages the cassette pickup rollers. Engages the MP Pickup roller. Releases the
  • HP LaserJet 4v/mv | Service Manual - Page 89
    Pickup Arm in the optional lower cassette feeds the paper upward through a guide slot in the 250-sheet cassette to the Registration Roller. Once there, the operation is the same as printing from a standard paper cassette. Paper Jam Detection The Pickup Unit photosensor (PS501) in the registration
  • HP LaserJet 4v/mv | Service Manual - Page 90
    OFF. Maintain the printer in ready state. INTR (initial From the input of the PRNT signal from rotation) the Formatter until the laser diode intensity has been stabilized. Stabilize the photosensitive drum sensitivity in preparation for printing. Also clean the Transfer Roller. PRNT From the
  • HP LaserJet 4v/mv | Service Manual - Page 91
    Figure 5-15 5TMEDIAG Functional 5 Overview General Timing Diagram Functional Overview 5-29
  • HP LaserJet 4v/mv | Service Manual - Page 92
    5-30 Functional Overview
  • HP LaserJet 4v/mv | Service Manual - Page 93
    User Installable Accessories 6-5 Covers and Doors 6-8 Control Panel 6-8 Upper Cover 6-9 Static Charge Eliminator 6-10 Transfer Roller Assembly 6-25 Fusing Assembly 6-26 Fuser Inlet Guide 6-27 Paper Guide Plate Assembly 6-28 MP Guide Plate 6-29 MP Drive Gears 6-30 Fuser Door 6-31 MP Tray
  • HP LaserJet 4v/mv | Service Manual - Page 94
    6-34 Upper and Lower Delivery Roller Assemblies 6-34 Delivery Gear Assembly 6-35 Cartridge Guide 6-36 Cassette Pickup Roller Assembly 6-37 Separation Pad 6-38 Registration Roller 6-39 Registration Roller Guide Plate 6-41 Anti-Static Brush 6-42 Paper Guide 6-43 Bottom Assemblies 6-44 Foot
  • HP LaserJet 4v/mv | Service Manual - Page 95
    cover removed from the Laser/Scanner assembly. The reflected beam, although invisible, can damage your eyes. This printer has some sharp sheet metal edges which can cause injury. The printer contains parts that are electrostatic discharge (ESD) sensitive. Always service printers at an ESD protected
  • HP LaserJet 4v/mv | Service Manual - Page 96
    common hardware used in the printer. To install a self-tapping screw, first turn it counter-clockwise to align it with the existing thread pattern, then carefully turn clockwise to tighten. Do not over-tighten. If a self-tapping screw-hole becomes stripped, repair
  • HP LaserJet 4v/mv | Service Manual - Page 97
    Removal & 6 Replacement User Installable Accessories 1 2 3 20 4 45 Memory Upgrade CAUTION SIMMs and the Formatter PCA can be damaged by small amounts of electro-static discharge (ESD). Wear an anti-static wrist strap. 1 With the printer OFF and unplugged, loosen the two captive screws and remove
  • HP LaserJet 4v/mv | Service Manual - Page 98
    removed as one piece. 1 With the printer OFF and unplugged, loosen (2) captive screws two plastic locking pins and a 50 pin connector. Grasp the two sides installed and operating before installing the Disk Accessory. 1 Hold the disk by the side edges of the cover and align it with the diagram printed
  • HP LaserJet 4v/mv | Service Manual - Page 99
    Lower Cassette requires installation of a Lower Cassette Paper Guide on the bottom of the printer, as well as connection of a cable to the rear of the left foot. Before beginning, unplug the printer from the power source and remove the toner cartridge and paper cassette. WARNING! 2 Get
  • HP LaserJet 4v/mv | Service Manual - Page 100
    Figure 6-2 6CONPNL 6CONPNLWMF Covers and Doors The printer covers are in four separate components: the Upper Cover (includes the Control Panel), the panel that has a non-English keyboard overlay, be sure to remove the overlay and install on the new control panel. 6-8 Removal and Replacement
  • HP LaserJet 4v/mv | Service Manual - Page 101
    & 6 Replacement Figure 6-3 6TCOVER 6TCOVERWMF Upper Cover The Upper Cover is held in place by two screws, which are accessed from the front of the printer. 1 Open the front door. 2 Remove (2) screws shown in Figure 6-3. 3 Tilt the front of the cover up, slide it to the rear, unsnap cable from
  • HP LaserJet 4v/mv | Service Manual - Page 102
    Static Charge Eliminator only if replacing. Removing it may damage the accessory. 1 Remove Upper Cover (see Figure 6-3). 2 Remove delivery tray by removing (2) screws (Figure 6-4, callout 1). 3 Remove (2) screws (Figure 6-4, callout 2). 4 Using needlenose pliers, remove the Static Charge Eliminator
  • HP LaserJet 4v/mv | Service Manual - Page 103
    Removal & 6 Replacement NOTE Figure 6-5 6LFTCVR 6LFTCVRWMF Side Covers 1 Remove the Upper Cover (Figure 6-3). The left cover tab (shown) presses to the rear; the right cover tab presses to the front. 2 Press on the tab to release the top edge of each side cover (Figure 6-5). 3 Tilt the cover
  • HP LaserJet 4v/mv | Service Manual - Page 104
    Figure 6-6 6REARCVR 6REARCVRWMF Rear Cover 1 Remove (1) machine screw (Figure 6-6, callout 1) and (1) shoulder screw (Figure 6-6, callout 2). 2 Tilt the cover outward and lift off. Removing Rear Cover To Reinstall: Make sure the locator tabs at the bottom of the covers are properly placed in the
  • HP LaserJet 4v/mv | Service Manual - Page 105
    Exhaust Fan (FM1) The Exhaust Fan is located on the left side of the printer, just above the High Voltage Power Supply PCA. 1 Unplug the fan connector from callout 1). Exhaust Fan To Reinstall: Make sure that the fan is installed in the correct direction (exhaust, not intake). The cables should be
  • HP LaserJet 4v/mv | Service Manual - Page 106
    Supply PCA The High Voltage Power Supply is located along the left side of the printer. 1 Remove the (2) connectors (Figure 6-8, callout 1). 2 Remove (4) machine Voltage Power Supply PCA To Reinstall: Note the position of the Print Density Dial, and how it is seated in the slide adjustment as shown in
  • HP LaserJet 4v/mv | Service Manual - Page 107
    Removal & 6 Replacement CAUTION Figure 6-9 6papsen 6papsenwmf Cassette Size Sensor Assembly 1 Remove the High Voltage Power Supply PCA (see Figure 6-8). 2 Disconnect the cable (see Figure 6-9, callout 1). 3 Remove the (1) machine screw (see Figure 6-9, callout 2). Be careful not to damage the
  • HP LaserJet 4v/mv | Service Manual - Page 108
    rear) from the top of the plate (Figure 6-10, callout 3). 4 Remove (1) screw from the back of the plate (Figure 6-10, callout 4). 5 Loosen (do not remove) (1) screw as shown in Figure 6-10, callout 5. 6 Lift the Card Cage off of the printer. Card Cage To Reinstall: When reinstalling the Card Cage
  • HP LaserJet 4v/mv | Service Manual - Page 109
    Rear Exhaust Fan (FM2) The Rear Exhaust Fan is located on the left rear of the printer chassis, and requires prior removal of the Card Cage assembly. 1 Remove the Card Cage assembly (see Figure 6-10). 2 Unplug the fan cable connector and release it from its cable clip (Figure 6-11, callout
  • HP LaserJet 4v/mv | Service Manual - Page 110
    opened prior to removing the Power Supply Unit. 1 Remove the Card Cage assembly (see Figure 6-10). 2 Unplug the connector from the Fusing assembly (Figure 6-12, callout 1). 3 Unplug the up to clear the chassis and pull sideways out of the printer. Power Supply Unit 6-18 Removal and Replacement
  • HP LaserJet 4v/mv | Service Manual - Page 111
    Card Cage assembly. 1 Remove the Card Cage assembly (see Figure 6-10). (4) connectors are hardwired to the DC Controller and must be unplugged clips (Figure 6-13, callout 2). 4 Unplug (1) connector from the side of the Laser Scanner PCA and release it from its clip (Figure 6-13, callout 3). 5 Unplug
  • HP LaserJet 4v/mv | Service Manual - Page 112
    6-10) • Rear Exhaust Fan (FM2) (Figure 6-11) • Power Supply Unit (Figure 6-12) • DC Controller PCA (Figure 6-13) 2 Remove (4) long, machine screws (Figure 6-14). 3 Lift up slightly to disengage from alignment pins and carefully slide the Laser/Scanner assembly out the side of the printer chassis
  • HP LaserJet 4v/mv | Service Manual - Page 113
    from the top of the Main Motor (Figure 6-15, callout 1). 2 Disconnect the Fuser cable from the Power Supply Unit (Figure 6-15, callout 2). 3 Remove (1) machine screw securing the right end of the cable tray, and drop the cable tray downward out of the way (Figure 6-15, callout 3). 4 Remove (2) large
  • HP LaserJet 4v/mv | Service Manual - Page 114
    assembly is located on the right side of the printer toward the front. 1 Remove (2) machine screws (Figure 6-16, callout 1). 2 Unplug the Fuser connector from the Power Supply Unit (Figure 6-16, callout 2). 3 Lift out plastic cable shield and pull the cable tray out of the way (Figure 6-16, callout
  • HP LaserJet 4v/mv | Service Manual - Page 115
    guide (metal) and remove the guide (Figure 6-17, callout 7). 9 Unplug the pickup clutch connector and remove its cable from the clips (Figure 6-17, callout 8). 10 callout 12). 14 While supporting the weight of the it outward from the printer. NOTE Main Drive roller clutch and the pickup roller
  • HP LaserJet 4v/mv | Service Manual - Page 116
    The Drum Drive assembly is located directly behind the Main Drive assembly. 1 Remove the toner cartridge. 2 Remove the Main Drive assembly (see Figure 6-16). 3 Remove (3) self-tapping screws (Figure 6-18). 4 Slide the assembly out of the printer. Drum Drive Assembly 6-24 Removal and Replacement
  • HP LaserJet 4v/mv | Service Manual - Page 117
    lift upward to snap out of the plastic retainer clip (Figure 6-19, callout 1). 2 Lift the opposite end up and out of its retainer clip. Transfer Roller Assembly To Reinstall: Be sure that the non-gear end of the shaft is to the right. Also make sure that the alignment slot (plastic
  • HP LaserJet 4v/mv | Service Manual - Page 118
    is located on the upper portion of the printer door. Do not remove (2) screws indicated in (Figure 6-20) by the null symbol ( ). 1 Remove the Transfer Roller (see Figure 6-19). 2 Remove (5) 6-20, callout 3) is in place or damage to the toner cartridge drum will occur. 6-26 Removal and Replacement
  • HP LaserJet 4v/mv | Service Manual - Page 119
    Fuser Inlet Guide The Fuser Inlet Guide contains the anti-static teeth. They are VERY sharp. The Fuser Inlet Guide is located inside the Front Door assembly just forward of the Transfer Roller screw) and the guide seated, with retaining tabs located correctly, or paper jams will occur. 3 Replace
  • HP LaserJet 4v/mv | Service Manual - Page 120
    Figure 6-22 6mpguide 6mpguidewmf Paper Guide Plate Assembly The Paper Guide Plate assembly contains the MP Tray pickup roller, motor, and gear assemblies, and requires prior removal of the Transfer Roller and Fusing assembly. 1 Remove the Transfer Roller (see Figure 6-19). 2 Remove the Fusing
  • HP LaserJet 4v/mv | Service Manual - Page 121
    Removal & 6 Replacement CAUTION Figure 6-23 6spring 6springwmf MP Guide Plate The MP Guide plate is located adjacent to the MP Pickup Roller assembly and requires prior removal of the Paper Guide Plate assembly. The springs on each end of the plate are under tension. Be careful when releasing. 1
  • HP LaserJet 4v/mv | Service Manual - Page 122
    Figure 6-24 6mpgears 6mpgearswmf MP Drive Gears The MP Tray Drive Gears are housed within the Front Door assembly directly under the Paper Guide Plate assembly. The Drive Gear that is circled in Figure 6-24 requires prior removal of the Fuser Door (see Figure 6-25, callout 2). 1 Remove the Fusing
  • HP LaserJet 4v/mv | Service Manual - Page 123
    Removal & 6 Replacement Figure 6-25 6fusdoor 6fusdoorwmf Fuser Door The Fuser Door is accessed with the printer front door closed and the MP Tray open. 1 Open the Fuser Door part way and press downward on the left end to release (2) plastic retainer clips from the pins (see Figure 6-25, callout
  • HP LaserJet 4v/mv | Service Manual - Page 124
    NOTE Figure 6-26 6mptray 6mptraywmf MP Tray To remove the MP Tray the printer front door must be closed and the MP Tray open. 1 Grasp right and left edges of the MP Tray and squeeze inward to release retainer arms. The plastic retainer arms are designed to pop out when snapped downward. This
  • HP LaserJet 4v/mv | Service Manual - Page 125
    Fuser Cable tray cover. 3 Unplug the Fuser Cable (on the right side of the printer) and remove (2) screws to release the cable tray from the printer 6 Using needle nose pliers, pull the hinge pins outward while supporting the weight of the Front Door assembly. Front Door Assembly To Reinstall
  • HP LaserJet 4v/mv | Service Manual - Page 126
    Delivery Area Assemblies Upper and Lower Delivery Roller Assemblies The Delivery Roller assemblies are located on top of the printer chassis and require removal of the Upper Cover to access. 1 Remove the e-clip on the left end of the upper roller shaft (Figure 6-28, callout 1). 2 Slide the bushing
  • HP LaserJet 4v/mv | Service Manual - Page 127
    adjacent to the Upper Delivery Rollers on the top right end of the printer, and requires previous removal of the Upper Delivery Roller. 1 Remove the Upper Delivery Roller (Figure 6-28). 2 Remove (2) self-tapping screws securing the Upper Cover support bracket (Figure 6-29, callout 1). 3 Remove
  • HP LaserJet 4v/mv | Service Manual - Page 128
    6papgdewmf Cartridge Guide The Cartridge Guide is located directly under the toner cartridge and behind the Registration Rollers. Note that the removal of this guide it forward, out of the printer. Note that the plate fits tightly within the opening. Cartridge Guide 6-36 Removal and Replacement
  • HP LaserJet 4v/mv | Service Manual - Page 129
    Pickup Roller assembly is located under the Cartridge Guide. The removal of this assembly requires prior removal of the top and right side covers and will require a stubby Phillips screwdriver. 1 Remove Paper Cassette and Cartridge Guide (Figure 6-30). 2 From the right side of the printer, remove
  • HP LaserJet 4v/mv | Service Manual - Page 130
    CAUTION Figure 6-32 6seppad 6seppadwmf Separation Pad The separation pad is located adjacent to the Registration Roller, and can be removed without prior removal of any other parts. Removing the Separation Pad using a screwdriver is likely to damage it. Do not attempt to remove the Separation Pad
  • HP LaserJet 4v/mv | Service Manual - Page 131
    Roller The Registration Roller requires a stubby magnetic screwdriver and prior removal of the covers and toner cartridge guide. Removal of the left end of the Registration Roller the printer chassis. 3 Carefully pull the roller retaining arm to the front while sliding the left end of the roller out
  • HP LaserJet 4v/mv | Service Manual - Page 132
    on the rear Transfer Roller as you carefully ease the left retaining arm and left Registration Roller bushing back into Roller Registration Roller (Rubber) Registration Roller CROSS SECTION Roller Retaining Arm Rear Metal Roller Metal Grounding Finger Spring Retaining Plate Spring Printer
  • HP LaserJet 4v/mv | Service Manual - Page 133
    2 Remove (2) self-tapping screws (Figure 6-35). 3 Lift the Registration Roller Guide Plate up and out of the printer. Registration Roller Guide Plate To Reinstall: Be careful not to damage the two grounding tabs on the left end of the Guide Plate as you insert it into place. Removal and Replacement
  • HP LaserJet 4v/mv | Service Manual - Page 134
    Plate. 1 Remove the Registration Roller and Guide Plate (see Figure 6-35). 2 Remove (1) machine grounding screw with star washer (Figure 6-36, callout 1). 3 Lift the sheet metal grounding plate out (Figure 6-36, callout 2). 4 Lift the Anti-Static Brush up and out of the printer (Figure 6-36, callout
  • HP LaserJet 4v/mv | Service Manual - Page 135
    Paper Guide The Paper Guide is a plastic plate located directly under the Registration Roller assembly. 1 Remove the Registration Roller and Guide Plate (see Figures 6-33 and 6-35). 2 Remove (3) self-tapping screws (Figure 6-37). 3 Carefully lift the Paper Guide up and out of the printer. Paper
  • HP LaserJet 4v/mv | Service Manual - Page 136
    on its left side, as this will damage the ventilation grill. 1 Remove lower paper cassette and turn the printer on its side. 2 Remove connector cover (if installed) (see Figure 6-38, callout 1). 3 Remove the Optional Lower Cassette connector by depressing the retainer ears inward (see Figure 6-38
  • HP LaserJet 4v/mv | Service Manual - Page 137
    Contents Preliminary Troubleshooting 7-3 Paper Path and Components 7-4 Printer Message Troubleshooting 7-5 Priority of Errors 7-5 Printer Status Messages 7-6 Service and Error Messages 7-11 Clearable Warnings 7-15 Image Formation Troubleshooting 7-16 Check the Toner Cartridge 7-16 Faulty
  • HP LaserJet 4v/mv | Service Manual - Page 138
    7-2 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 139
    Self Test. If there is an image problem, refer to "Image Formation Troubleshooting" later in this chapter. If no page is printed, troubleshoot as a Formatter problem. 7. Verify proper software drivers have Install drivers. been installed. 8. Connect printer to network (if applicable) and verify
  • HP LaserJet 4v/mv | Service Manual - Page 140
    7PAPPATH Paper Path and Components Figure 7-1 Optional Lower Cassette Lower Cassette Exit Sensor Paper Out Sensor Lower Cassette Pickup Rollers Paper Path and Components 7-4 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 141
    has a priority in relation to the others. If there is more than one error condition at the same time, the highest priority error will be displayed. The priority of errors is: 1 Service Errors 2 Door Open/No Toner Cartridge 3 Paper Jam 4 Paper Out 5 Memory Error 6 Manual Feed Troubleshooting 7-5
  • HP LaserJet 4v/mv | Service Manual - Page 142
    [Shift] + [Continue] to stop the test. Several more pages may print. Printer self test in process (non-printing). No action required. Printing a self test. No action required. Printing a Typeface List. (Note that PCL/PostScript formats are different.) No action required. 7-6 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 143
    ] + [Reset] several times to prevent printing unwanted pages. The printer returns all Printing, PCL, Job, Config, Mem Config, Parallel, MIO (if installed), and the installed personality (PCL, PS, etc.) Menu settings to their factory default configurations, except for page count, MP Tray size, and
  • HP LaserJet 4v/mv | Service Manual - Page 144
    paper jam problems: 1. Paper cassettes not correctly loaded (refer to the User's Manual). 2. Print media does not meet specs or is in poor condition (refer to the Paper Specifications Guide). 3. The printer needs cleaning (refer to Chapter 4). 4. Pickup, Registration or Output rollers contaminated
  • HP LaserJet 4v/mv | Service Manual - Page 145
    front door under the Transfer Roller.) 3. Replace the DC Controller PCA. The toner cartridge is running out of toner. If TONER LOW=CONT* is displayed, the printer will continue printing; if TONER LOW=STOP, the printer will stop printing and go off line. Shake the toner cartridge or replace it. If
  • HP LaserJet 4v/mv | Service Manual - Page 146
    printer. Press [Shift] + [Reset]. PC or LC LOAD: Load the Paper Cassette or Lower Cassette with the requested media. Also, the back paper guide in the cassette must be set to the correct media size (the printer determines the media size by reading the location of this guide). 7-10 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 147
    the jam. Press [Shift] + [Continue] and the page containing the error will automatically be reprinted. NOTE: If AUTO CONT=ON the printer will automatically continue printing when this error occurs. Refer to the error 13 PAPER JAM earlier in this table for more information. Troubleshooting 7-11
  • HP LaserJet 4v/mv | Service Manual - Page 148
    Table 7-2 Message 50 SERVICE 51 ERROR 52 SERVICE 53.XY.ZZ ERROR Service and Error Messages - continued Description Fuser malfunction, resulting from either an overheating or underheating condition. Recommended Action Switch the printer OFF for at least 20 minutes and then back ON. If the error
  • HP LaserJet 4v/mv | Service Manual - Page 149
    ] + [Continue] ; the 00 READY message will be replaced by 68 READY/SERVICE until the condition is cleared. If you switch the printer OFF, then ON, you may lose settings. (To check settings, print a self test). If the error persists, replace the Formatter PCA. Troubleshooting 7-13 7 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 150
    the error message and the four digit code down before continuing. Switch the printer OFF, then back ON. 1. Remove SIMMs one at a time and recycle power to isolate. 2. If the problem persists, and the printer has an MIO card installed, remove the MIO and try using the parallel interface, if possible
  • HP LaserJet 4v/mv | Service Manual - Page 151
    settings were altered when the printer was switched on because the printer did not have enough memory. This usually occurs after memory has been removed from the printer. (You can check settings by printing a self test.) Adding additional memory should correct this problem. Troubleshooting 7-15
  • HP LaserJet 4v/mv | Service Manual - Page 152
    are many times the result of toner cartridge problems. If there is any doubt, always replace the toner cartridge before troubleshooting image defects. Use the following check list to ensure that the toner cartridge is still operable. • Inspect the toner cartridge for remaining toner. • Check the
  • HP LaserJet 4v/mv | Service Manual - Page 153
    7 Troubleshooting BLANK PAGE (see Table 7-4, page 7-21) BLACK PAGE (see Table 7-5, page 7-22) FADED PRINT (see Table 7-6, page 7-23) WHITE STRIPES (parallel to path) (see Table 7-7, page 7-24) Troubleshooting 7-17
  • HP LaserJet 4v/mv | Service Manual - Page 154
    BLACK LINES (perpendicular to path) (see Table 7-8, page 7-24) BLACK LINES (parallel to path) (see Table 7-9, page 7-25) REPETITIVE DEFECTS (see Table 7-10, page 7-25) 7-18 Troubleshooting BUBBLE PRINT (see Table 7-11, page 7-26)
  • HP LaserJet 4v/mv | Service Manual - Page 155
    7 Troubleshooting DROPOUT (see Table 7-12, page 7-26) CHARACTER VOIDS (see Table 7-13, page 7-27) BACKGROUND SCATTER (or Leading Edge Halo) (see Table 7-15, page 7-28) PARTIAL BLANK PAGE (see Table 7-14, page 7-28) Troubleshooting 7-19
  • HP LaserJet 4v/mv | Service Manual - Page 156
    FAULTY REGISTRATION (see Table 7-16, page 7-29) SMEARED PRINT (see Table 7-17, page 7-30) COMPRESSED PRINT (see Table 7-18, page 7-30) 7-20 Troubleshooting IMAGE SKEW (see Table 7-19, page 7-30)
  • HP LaserJet 4v/mv | Service Manual - Page 157
    at once because the paper is the paper edges to separate the pages (see HP difficult to separate. LaserJet Printer Family Paper Specifications Guide). ALL PAGES BLANK: 1. Sealing tape left in toner cartridge. Remove the sealing tape. 2. Empty or defective toner cartridge. 1. If unsure, weigh
  • HP LaserJet 4v/mv | Service Manual - Page 158
    Table 7-5 Black Page Possible Cause Recommended Action 1. Defective toner cartridge. Replace the toner cartridge. 2. Light is leaking into the printer. Ensure all covers are in place. 3. High voltage contact springs are dirty or defective. The high voltage contacts are mounted on the High
  • HP LaserJet 4v/mv | Service Manual - Page 159
    be a print quality problem in some cases. 4. Paper does not meet specs. The moisture content, conductivity, or surface finish may not work correctly with the electrophotographic process. Try a different paper lot (see HP LaserJet Printer Family Paper Specifications Guide). 5. Transfer Roller is
  • HP LaserJet 4v/mv | Service Manual - Page 160
    from developing an image on the Photosensitive drum. Remove the toner cartridge and check for damage. Replace the toner cartridge if it is damaged. Remove the Printer Cover and inspect the path from the Laser/Scanner to the toner cartridge drum, looking for foreign objects in the beam path. Table
  • HP LaserJet 4v/mv | Service Manual - Page 161
    the toner cartridge and the Fuser. Replace the Main Drive Assembly if necessary. 5. Paper does not meet specs. The surface of the paper may be too coarse, causing repeated marks. Try a different paper lot (see HP LaserJet Printer Family Paper Specifications Guide). NOTE When troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 162
    Assembly (see Chapter 6). Replace the toner cartridge. Try a different paper lot (see HP LaserJet Printer Family Paper Specifications Guide). Table 7-12 Dropout Possible Cause 1. Single sheet of paper defective. 2. Paper does not meet specs. The paper moisture content, conductivity, or surface
  • HP LaserJet 4v/mv | Service Manual - Page 163
    Tray. 3. Paper surface too smooth for proper toner adhesion. Use paper with correct finish (smoothness) meeting HP specifications (see HP LaserJet Printer Family Paper Specifications Guide). 4. Bad transparencies. Transparencies can have Use Hewlett-Packard approved transparencies this problem
  • HP LaserJet 4v/mv | Service Manual - Page 164
    (see HP LaserJet Printer or surface finish may not work correctly with the Family Paper Specifications Guide). electrophotographic process. 2. Inside of printer is dirty (toner may have leaked Clean inside of printer (see Chapter 4). Install a out of the toner cartridge). new toner cartridge if
  • HP LaserJet 4v/mv | Service Manual - Page 165
    a setting may cause image skewing. 3. Paper does not meet specs. The surface of the Try a different paper lot (see HP LaserJet Printer paper may be too smooth for the Pickup and Feed Family Paper Specifications Guide). Rollers to correctly feed paper into the printer. 4. Worn or broken drive gears
  • HP LaserJet 4v/mv | Service Manual - Page 166
    Remove paper from the tray and install paper installed flush into the paper cassette, a skewing correctly. Position the paper guide correctly for problem will result. the paper size being used. 2. Bad Paper Lot. Paper that is manufactured Try a different paper lot (see HP LaserJet Printer poorly
  • HP LaserJet 4v/mv | Service Manual - Page 167
    7ENGTST Figure 7-2 Troubleshooting Checks Engine Test The engine test print is used to verify that the print engine is functioning correctly. The Formatter PCA is completely bypassed during an engine test. This test is very useful for isolating printer problems. The engine test prints a full page
  • HP LaserJet 4v/mv | Service Manual - Page 168
    2 Open the Front Door after the paper advances half-way through the printer (about five seconds after the Main Motor begins rotation). The leading edge of the paper should have advanced past the toner cartridge. 3 Remove the toner cartridge. 4 Open the toner cartridge's drum shield to view the drum
  • HP LaserJet 4v/mv | Service Manual - Page 169
    's drive gear with a felt-tipped marker. Note the position of the mark. 4 Install the toner cartridge, and close the Front Door. The start-up sequence should rotate the drum enough to move the mark. 5 Open the printer, and inspect the gear that was marked in step 3. Verify that the mark moved
  • HP LaserJet 4v/mv | Service Manual - Page 170
    System Checks CHECKS 1. Toner cartridge connection points. 2. High toner cartridge. If they are dirty or corroded, clean the connections. Clean using alcohol only. If damaged, replace the toner cartridge and protrude through the toner cartridge cavity to contact the toner cartridge. Verify that the
  • HP LaserJet 4v/mv | Service Manual - Page 171
    7 Troubleshooting Table 7-21 Paper Curl Paper curl is inherent to the laser printing processes, and occurs when paper is subjected to heat. Paper curl tends to relax as the paper cools while resting on a flat surface. The specification for maximum paper curl when the paper is lying flat before
  • HP LaserJet 4v/mv | Service Manual - Page 172
    50 mm (1.96 in) Registration Roller 50 mm (1.96 in) Transfer Roller 61 mm (2.4 in) Developing Cylinder 63 mm (2.48 in) Fusing Pressure Roller 86 mm (3.38 in) Upper Fusing Roller 88 mm (3.46 in) Toner Cartridge Photosensitive Drum 94 mm (3.7 in) Repetitive Image Defect Ruler 7-36 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 173
    7 Troubleshooting Wiring Diagrams This section contains the following diagrams: Figure 7-4. DC Controller Inputs (1 sheet) Figure 7-5. DC Controller Outputs (1 of 2) Figure 7-6. DC Controller Outputs (2 of 2) Figure 7-7. Main Wiring Diagram (1 sheet, fold-out) Troubleshooting 7-37
  • HP LaserJet 4v/mv | Service Manual - Page 174
    7DCIN Figure 7-4 DC Controller Inputs 7-38 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 175
    7DCOUT1 7 Troubleshooting Figure 7-5 DC Controller Outputs (1 of 2) Troubleshooting 7-39
  • HP LaserJet 4v/mv | Service Manual - Page 176
    7DCOUT2 Figure 7-6 DC Controller Outputs (2 of 2) 7-40 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 177
    7WIRING 7 Troubleshooting Figure 7-7 Main Wiring Diagram Troubleshooting 7-41
  • HP LaserJet 4v/mv | Service Manual - Page 178
    7-42 Troubleshooting
  • HP LaserJet 4v/mv | Service Manual - Page 179
    8 Parts and Diagrams Chapter Contents How to Use the Part Lists and Diagrams 8-3 Ordering Parts 8-3 Ordering Consumables 8-4 Accessories and Supplies 8-5 Common Hardware and Replaceable Cables 8-7 Illustrations and Parts Lists 8-9 - 8-30 Parts and Diagrams 8-1
  • HP LaserJet 4v/mv | Service Manual - Page 180
    8-2 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 181
    number selected is for the correct model of printer. Ordering Parts All standard part numbers listed are stocked and may be ordered from HP's Support Materials Organization (SMO), or Support Materials Europe (SME). Hewlett-Packard Co. Support Materials Organization 8050 Foothills Blvd. Roseville, CA
  • HP LaserJet 4v/mv | Service Manual - Page 182
    on Table 8-1 may be ordered from Hewlett-Packard. The phone numbers are: U.S.: 1-800-538-8787 Canada: 1-800-387-3154 (Toronto) 516-671-8383 United Kingdom: 0734-441212 Germany: 0130-3322 Contact your local HP Parts Coordinator for other local phone numbers. Parts that have no reference designator or
  • HP LaserJet 4v/mv | Service Manual - Page 183
    paper cassette for Universal Lower Cassette Base Bi-Tronics Parallel cable Product Number Description C3900A Replacement toner cartridge. 1 MByte - C3130A 2 MByte - C3131A 4 MByte - C3132A 8 MByte - C3133A 16 MByte - C3146A You can upgrade to a total of 68 MBytes of memory in the HP LaserJet 4V
  • HP LaserJet 4v/mv | Service Manual - Page 184
    J2553A J2374B J2375B C3295A HP JetDirect Multi-protocol Network Card with Ethernet/IEEE802.3 10Base-T HP JetDirect Multi-protocol Network in 4MV.) HP JetDirect Multi-protocol Network Card with Token Ring (DB9 and RJ45). HP JetDirect interface software for HP-UX systems. HP JetDirect interface
  • HP LaserJet 4v/mv | Service Manual - Page 185
    and 8 Diagrams Table 8-A 8SCREW_C Common Hardware and Replaceable Cables Common Fasteners Used in the Printer Example Ref Description CH101 Screw, Trus Head, w/Washer Part Number FA9-1449-000 8SCREW_B 8SCREW_L CH102 Screw, Stepped, M3 CH103 Screw, Stepped, M3X4 CH104 Screw, Stepped, M3
  • HP LaserJet 4v/mv | Service Manual - Page 186
    Fasteners Used in the Printer - continued Example Ref Retaining Ring (e-type) CH121 Retaining Ring (e-type) CH122 Screw, Mach, M3X14 Part Number XB6-7300-809 XB6-7301-609 XD2-1100-242 XD2-1100-322 XD2- Assembly Display Panel Cable Assembly Part No. RG5-1442-000 RG5-1446-000 RG5-1447-000 RG5-
  • HP LaserJet 4v/mv | Service Manual - Page 187
    Figure 8-1 8ASYLOC1 Parts and 8 Diagrams Major Assembly Locations Parts and Diagrams 8-9
  • HP LaserJet 4v/mv | Service Manual - Page 188
    Figure 8-2 8EXTCOV1 Covers and Doors 8-10 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 189
    Cover 1 Panel, Rear 1 Panel, Left 1 Guide, Plate, Protection 1 Panel, Right 1 Multi-purpose Tray Assembly 100/115V 1 Multi-purpose Tray Assembly 220/240V 1 Display Panel Assembly 100/115V Screw, Stepped, M3 1 Screw, TP, M3X6 7 Screw, Tapping, Truss Head Parts and 8 Diagrams Parts and Diagrams 8-11
  • HP LaserJet 4v/mv | Service Manual - Page 190
    Figure 8-3 8EXTCOV2 Foot Assemblies 8-12 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 191
    Ref Part No. 3 RB1-5575-000 7 RF5-1176-000 10 RG5-1550-000 11 RG5-1551-000 CH110 XB1-2400-809 11B RG5-1446-000 Qty Description 1 Cover, Rear Cassette 1 Plate, Cover 1 Right Foot Assembly 1 Left Foot Assembly 1 Screw, Machine M4X8 1 Option Cable Assembly Parts and 8 Diagrams Parts and
  • HP LaserJet 4v/mv | Service Manual - Page 192
    Figure 8-4 8FNTCOV1 Front Door Components (Page 1 of 2) 8-14 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 193
    Sensor, Delivery 1 Cover, Front 1 Paper Guide Plate Assembly 1 Front Cover Connect PCA Assembly 1 Delivery Drive Assembly 1 Fusing Assembly 100/115V 1 Fusing Assembly 220/240V 1 Exchange Fusing Assembly 100/115V 1 Exchange Fusing Assembly 220/240V 1 Transfer Roller Holder Assembly 1 AC Terminal PCA
  • HP LaserJet 4v/mv | Service Manual - Page 194
    Figure 8-5 8FNTCOV2 Front Door Components (Page 2 of 2) 8-16 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 195
    Table 8-5 Front Door Components (2 of 2) Ref Part No. 17 RG5-1404-000 19 RG5-1552- 2118-000 17R RS5-2122-000 17S RS5-2126-000 17T RS5-2129-000 Qty Description 1 Paper Guide Plate Assembly 1 Front Door Assembly 1 Roller, Pickup 1 Screw, Stepped, M3X4 1 Screw, W/Washer, M3X8 2 Screw, Tap Binding
  • HP LaserJet 4v/mv | Service Manual - Page 196
    Figure 8-6 8INTCOV Output Components 8-18 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 197
    0198-000 7 RG5-0200-000 10 RS5-1004-000 11 RG5-1396-000 CH108 XB1-2300-607 CH112 XB4-7401-007 CH120 XD2-1100-642 Qty Description 1 Shutter, Laser 1 Cover, Louver 1 Pad, Shutter 1 Cover, Center 1 Guide, Delivery Unit 1 Face Down Delivery Assembly 6 FD Roller Assembly 1 Bushing 1 Gear Mounting
  • HP LaserJet 4v/mv | Service Manual - Page 198
    Figure 8-7 8INTCOM1 Internal Components (Page 1 of 4) 8-20 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 199
    1 Plate, Pressure, Right 1 Plate, Pressure, Left 1 Lever 1 Knob, Print Density 1 Bracket, Anti-static Brush 1 Hook, Right 1 Hook, Left 1 Spring, Leaf 1 Separation Pad 1 Guide, Paper 1 Guide 1 Pickup Roller Assembly 2 Roller, Pickup 1 Clutch, Electromagnetic 1 Drum Drive Assembly 2 Spring, Tension
  • HP LaserJet 4v/mv | Service Manual - Page 200
    Figure 8-8 8INTCOM2 Internal Components (Page 2 of 4) 8-22 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 201
    Part No. 1 RA2-0308-000 2 RA2-0311-000 3 RA2-0312-000 4 RB1-1292-000 5 RB1-1294-000 6 RB1-1367-000 7 RB1-1385-000 8 RB1-2748-000 10 , Left 1 Plate, Rod, Left 1 Guide, Cartridge 1 Registration Roller Assembly, Metal 1 Registration Roller Assembly, Rubber 1 DC Cable Assembly 1 Clutch
  • HP LaserJet 4v/mv | Service Manual - Page 202
    Figure 8-9 8INTCOM3 Internal Components (Page 3 of 4) 8-24 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 203
    Ref Part No. 2 FG2-4647-000 3 RB1-1278-000 4 RB1-1286-000 5 RB1-1325-000 7 RF5-0326-000 8 RF5-0397-000 9 RG5-1383-000 10 RG5-1442 1 Sub Transfer Assembly 1 Lever, Paper Sensing 1 Cover, E 1 Plate 1 Plate, Contact Transfer 1 Lever, Sensor, Front, Reg 1 Laser/Scanner Assembly
  • HP LaserJet 4v/mv | Service Manual - Page 204
    Figure 8-10 8INTCOM4 Internal Components (Page 4 of 4) 8-26 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 205
    Part No. 1 RB1-1273-000 2 RB1-1346-000 3 RB1-1380-020 4 RB1-5446-000 5 RG5-1416-000 6 RH7-1214-000 7 WT2-0317-000 8 WT2-5011-000 9 WT2-5018-000 10 2302-507 CH110 XB1-2400-809 CH111 XB4-7400-809 Qty Description 1 Guide, Cassette 1 Plate, HVT 1 Bracket, Cable 1 Plate, Rear Shield
  • HP LaserJet 4v/mv | Service Manual - Page 206
    Figure 8-11 8CRDCAGE Card Cage Assembly 8-28 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 207
    Ref Part No. 4 RB1-5557-000 5 RB1-5558-000 6 RH7-1218-000 7 RG5-1484-000 CH106 XA9-0267-000 CH122 XB1-2301-407 Qty Description 1 Rail, Slide, Right 1 Rail, Slide, Left 1 Fan (FM3) 1 Small Interface PCA 6 Screw, TP, M3X6 1 Screw, Mach, Trus Head M3X14 Parts and 8 Diagrams Parts and
  • HP LaserJet 4v/mv | Service Manual - Page 208
    Assembly Ref Part No. N/A C3760-60001 N/A C3760-69001 N/A C3760-60503 N/A C3760-60502 N/A C3760-60501 Qty Description 1 Lower Cassette Assembly 1 Exchange Lower Cassette Assembly 1 Lower Cassette Paper Guide 1 Lower Cassette Paper Tray 1 Lower Cassette Pickup Roller 8-30 Parts and Diagrams
  • HP LaserJet 4v/mv | Service Manual - Page 209
    A Parts Index Parts Index A-1
  • HP LaserJet 4v/mv | Service Manual - Page 210
    RF5-1165-000 RB1-5457-000 Fig Ref 8-4 21 8-7 8 8-10 3 8-7 2 8-6 10 8-8 21 8-8 22 8-10 10 8-8 2 8-9 10 8-10 11 8-10 5 8-10 13 8-8 3 8-2 18 8-10 7 8-8 24 8-10 8 8-10 9 8-8 18 8-8 20 8-7 15D 8-2 4 8-2 16 8-6 4 8-9 4 8-4 13 8-6 2 A-2 Parts Index
  • HP LaserJet 4v/mv | Service Manual - Page 211
    (FM2) Fan (FM3) FD Roller Assembly Formatter PCA Front Cover Connect Gear, 21T/40T Gear, 25T/33T Part No. RB1-5575-000 RG5-0239-000 RS5-0187-000 RS5-0576-000 Fig 8-3 8-8 8-10 8-4 8-2 8-2 8-2 8-7 8-7 8-2 8-10 8-10 8-4 8-4 8-12 8-6 8-8 8-10 8-11 8-6 8-10 8-4 8-5 8-9 8-9 8-4 8-4 8-6 8-4 8-4 Ref
  • HP LaserJet 4v/mv | Service Manual - Page 212
    Parts List - continued Description Gear, 34T Guide Guide, Cartridge Guide, Cassette Guide, Connector Guide, Delivery Unit Guide, Entrance Guide, Paper Guide, Plate, Protection Holder, Cable Hook, Left Hook, Right HV Power Supply Assembly Knob, Print Density Label, Caution, High Temp Laser
  • HP LaserJet 4v/mv | Service Manual - Page 213
    Parts List - continued Description Motor, DC 17.5W Mount Mount, Rod Multi-purpose Tray Assembly 100/115V Multi-purpose Tray Assembly 220/240V Option Cable Assembly Pad, Separation Pad, Shutter Panel, Left Panel, Rear Panel, Right Paper Guide Plate Assembly Paper Guide Plate Assembly Pickup Roller
  • HP LaserJet 4v/mv | Service Manual - Page 214
    Guide Roller, Pickup Roller, Pickup Screw, BH3X6(S) Screw, BH3X6(S) Screw, Bind Head Self-tap Screw, M3X25 Screw, Machine, Trus Head M3X14 Screw, Machine, Trus Head M3X25 Screw, Machine M3X8 Screw, Machine M3X8 A-6 Parts Index Part 8-7 120 8-8 120 8-5 121 8-3 10 8-8 7 8-8 5 8-8 1 8-5
  • HP LaserJet 4v/mv | Service Manual - Page 215
    , M3X8 Shaft, 2 Shaft, Gear, A Shaft, Gear, B Shaft, Gear, C Part No. XB6-7300-809 XB1-2400-809 XB1-2400-809 XB1-2400-809 XB4-7401-007 RB1-1423-000 RB1-1424-000 Fig 8-8 8-3 8-9 8-10 8-6 8-4 8-4 8-2 8-5 8-5 8-7 8-8 8-9 8-10 8-2 8-4 8-2 8-4 8-7 8-8 8-9 8-10 8-11 8-9 8-4 8-5 8-2 8-4 8-4 8-4 Ref 114
  • HP LaserJet 4v/mv | Service Manual - Page 216
    Tension Spring, Tension Spring, Tension Spring, Tension Spring, Tension Spring, Tension Springs, Separation Pad Stopper, Registration Sub Transfer Assembly Transfer Roller Holder Assembly Upper Cover Assembly Washer, Wave Part No. RB1-1352-040 RF5-1173-000 RG5-1484-000 RS5-2123-000 RB1-5454-000 RS1
  • HP LaserJet 4v/mv | Service Manual - Page 217
    PCA Lower Cassette Assembly Lower Cassette Pickup Roller Lower Cassette Paper Tray Lower Cassette Paper Guide Exchange Lower Cassette Assembly Screw, Trus Head, w/washer Sub Transfer Assembly Mount Screw, Stepped M3 Screw, Stepped, M3 Rack Roller, Guide Bushing, Sensor Claw Bushing Mount, Rod Lever
  • HP LaserJet 4v/mv | Service Manual - Page 218
    , Laser Retainer Bracket, Cable Rod Roller, Pickup Plate, Continuity, 1 Plate, Continuity, 2 Roller, Pickup Cover Shaft, Gear, A Shaft, Gear, B Shaft, Gear, C Guide, Connector Lever, Sensor, A Stopper, Registration Plate, Stop, Clutch Plate, Mounting, Right Plate, Rear Shield A-10 Parts Index
  • HP LaserJet 4v/mv | Service Manual - Page 219
    Panel, Rear Panel, Left Cover, Rear Cassette MIO Guide Plate MIO Guide Rail Pad, Separation Plate, Contact Transfer Plate, Rod, Left Guide, Paper Guide Lever, Sensor, Front, REG Lever, Sensor, Delivery Guide, Plate, Protection Guide, Cartridge Guide, Entrance Cover, Front Panel, Right Slider Plate
  • HP LaserJet 4v/mv | Service Manual - Page 220
    Front Cover Connect PCA Assembly DC Cable Assembly Delivery Drive Assembly Laser/Scanner Assembly Pickup Roller Assembly Gear Mounting Assembly Main Drive Assembly Drum Drive Assembly Paper Guide Plate Assembly Transfer Roller Holder Assembly Cass Size Sensor Assembly AC Terminal PCA Assembly HV
  • HP LaserJet 4v/mv | Service Manual - Page 221
    8-4 18 8-10 12 8-10 11 8-2 12 8-2 12 8-9 11 8-9 11 8-8 19 8-9 12 8-10 6 8-11 6 8-8 20 8-7 15D 8-5 17P 8-4 22 8-4 23 8-4 24 8-6 10 8-8 21 8-8 22 8-7 17 8-5 17Q 8-5 17R 8-7 18 8-4 25 8-5 17S 8-4 26 8-5 17T 8-4 27 Parts Index A-13 Parts A Index
  • HP LaserJet 4v/mv | Service Manual - Page 222
    M4X8 Screw, Tap Binding Head M4X8 Screw, Tap Binding Head M4X8 A-14 Parts Index Fig 8-9 8-9 8-10 8-8 8-10 8-2 8-10 8-10 8-10 8-4 8-5 8-2 8-4 8-7 8-8 8-9 8-10 8-11 8-9 8-6 8-7 8-11 8-10 8-3 8-9 8-10 8-5 8-7 8-8 8-9 Ref F101 F101 7 24 8 18 9 10 17 105 105 106 106 106 106 106 106 106 107 108 108
  • HP LaserJet 4v/mv | Service Manual - Page 223
    Table A-2 Numerical Parts List - continued Part No. XB4-7400-809 XB4-7400-809 (e-type) Retaining Ring (e-type) Retaining Ring (e-type) Retaining Ring (e-type) Washer, Wave Retaining Ring (e-type) Fig 8-10 8-2 8-6 8-4 8-4 8-7 8-8 8-4 8-4 8-7 8-8 8-7 8-8 8-6 8-7 8-8 8-4 8-5 Ref 111 CH111 112 113
  • HP LaserJet 4v/mv | Service Manual - Page 224
    A-16 Parts Index
  • HP LaserJet 4v/mv | Service Manual - Page 225
    advantage of its enhanced capabilities such as bi-directional communication between the computer and printer, faster transmission of data, and auto configuration of printer drivers the customer must have: • Support in software applications for these features. • A parallel cable with the correct pin
  • HP LaserJet 4v/mv | Service Manual - Page 226
    not come with a LocalTalk network cable. Use a standard LocalTalk network cable and connector kit, such as the HP LocalTalk Network Cable Kit, part number 92215N. You will need one connector kit for each printer on the network, and another for each Macintosh computer on the network. Connecting to
  • HP LaserJet 4v/mv | Service Manual - Page 227
    of a LocalTalk Network Figure B-4 1 3 2 4 Connecting to the MIDDLE of a LocalTalk Network (1 of 2) 1 Disconnect the printer from its power source. Insert the new connector box cable into the LocalTalk port of the printer. 2 Insert one end of the new cable into the connector box. 3 Place the other
  • HP LaserJet 4v/mv | Service Manual - Page 228
    a 10Base-T cable, but not both at the same time. BNC Interface Attach one section of the ThinLAN cable to one side of the BNC "T" connector. Attach another ThinLAN cable section or a 50 Ohm terminator to the other side. If you are attaching the printer to the end of your network you must connect
  • HP LaserJet 4v/mv | Service Manual - Page 229
    . By factory default, all supported network protocols are enabled in the HP LaserJet 4MV printer. Disabling unused protocols will: • Rid the network of unwanted broadcast messages from the printer. • Provide better control over who prints to the printer. • Provide only pertinent information
  • HP LaserJet 4v/mv | Service Manual - Page 230
    when this selection is incorrect do you have to set the NetWare frame type through the HP LaserJet 4MV control panel. The NetWare frame type is displayed on the self test page. To manually configure Novell NetWare parameters: 1 Press [Item] until CFG NOVELL=NO * appears. 2 Press [+] until CFG NOVELL
  • HP LaserJet 4v/mv | Service Manual - Page 231
    10 to configure the subnet mask bytes (SM), syslog server IP address (LG), default gateway (GW), and timeout (TIMEOUT). 12 If no other protocol is enabled, Press [On Line]. After completing this guide refer to the HP JetDirect Network Interface Configuration Guide for configuration instructions
  • HP LaserJet 4v/mv | Service Manual - Page 232
    Phase=1 * appears. 8 Press [On Line]. You may want to configure the AppleTalk name and assign a preferred EtherTalk Zone. 9 After completing this guide refer to the HP JetDirect Interface Configuration Guide for further configuration instructions on using the HP LaserJet Utility. B-8 I/O Information
  • HP LaserJet 4v/mv | Service Manual - Page 233
    Disable Network Protocols (Optional). 1 Press [On Line] to take the printer offline. 2 Press [Menu] repeatedly until MIO MENU appears. 3 Press [Item]. CFG NETWORK=NO * appears. 4 Press [+]. CFG NETWORK=YES * appears. 5 Press [Enter]. CFG NETWORK YES * appears. 6
  • HP LaserJet 4v/mv | Service Manual - Page 234
    B-10 I/O Information
  • HP LaserJet 4v/mv | Service Manual - Page 235
    since August 1, 1976. Compliance is mandatory for products marketed in the United States. This printer is certified as a "Class 1" laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act
  • HP LaserJet 4v/mv | Service Manual - Page 236
    Statement (Finland) The following applies to printer operation and servicing in Finland. LASERTURVALLISUUS LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT HP LaserJet(s) 4V and 4MV laserkirjoitin on käyttäjän kannalta turvallinen luokan 1 laserlaite. Normaalissa käyt"ssä kirjoittimen suojakotelointi est
  • HP LaserJet 4v/mv | Service Manual - Page 237
    -752-0900 between 6 A.M. and 5 P.M. Pacific Standard Time. By fax: To obtain an MSDS for the HP C3900A toner cartridges by fax, call HP ASAP (Automated Support Access Program) at 1-800-333-1917 and follow the instructions for using the HP FIRST fax service. See "Technical Assistance" earlier in this
  • HP LaserJet 4v/mv | Service Manual - Page 238
    for help. Any changes or modifications not expressly approved by Hewlett-Packard could void the user's authority to operate this equipment. Use of a shielded interface cable is required to comply within the Class B limits in Part 15 of FCC rules. Figure C-1 VCCI Statement (Japan) The VCCI
  • HP LaserJet 4v/mv | Service Manual - Page 239
    10 RESET TO SAVE, status message 7-7 12 PRINTER OPEN, status message 7-7 13 PAPER JAM, status message 7-8 14 NO TONER CART, status message 7-8 16 TONER LOW, status message 7-8 18 MIO INIT, status message 7-9 18 MIO NOT READY, status message 7-9 20 MEM OVERFLOW, service or error message 7-11 21 PRINT
  • HP LaserJet 4v/mv | Service Manual - Page 240
    1-7 engine test 3-22, 7-31 printing 7-31 engine test button location 7-31 engine test microswitch, SW7001 5-8, 7-31 Enter key 3-5 envelopes 1-8 background scatter 7-28 MP tray 1-8 printer damage 1-8 specifications 1-8 storing 1-10 windows 1-8 environment operating 2-3 environmental requirements
  • HP LaserJet 4v/mv | Service Manual - Page 241
    5-7 formatter system described 5-10 front door assemblies 1-13, 6-25 6-27, 6-30, 6-33, 8-17 front door assembly 6-33 fuser door 6-31 fuser inlet guide 6-27 fusing assembly 6-26 MP drive gears 6-30 MP guide plate 6-29 MP tray 6-32 paper guide assembly 6-28 transfer roller assembly 6-25 front door
  • HP LaserJet 4v/mv | Service Manual - Page 242
    7-10 MP tray 1-8, 1-11, 3-5, 5-25 - 5-27, 6-31 - 6-33, 7-8 - 7-11, 7-27, 7-35 adhesive labels 1-9 capacities and paper sizes 1-4, 3-5 drive gears 6-30 extension 1-11 manual feed printing 5-27 paper sensor 5-26 - 5-27 paper width guides 1-11 pickup 5-7 pickup clutch 5-8, 5-26 pickup roller 6-28 print
  • HP LaserJet 4v/mv | Service Manual - Page 243
    (PCE) 1-16 Parts Direct Ordering 1-16, 8-3 parts lists 8-3 PC INSTALL, status message 7-10 PC LOAD, status message 7-10 PC TRAY EMPTY, status message 7-10 PCL 3-9 menu 3-9 Type List 3-14 PCL Demo Page control panel selection 3-14 PCL DEMO PAGE, test menu item 3-14 PCL MEM, memory configuration menu
  • HP LaserJet 4v/mv | Service Manual - Page 244
    FS DISK FAILURE 7-9 LC LOAD 7-10 LC TRAY EMPTY 7-10 main motor failure 7-13 manual feed 7-5 memory error 5-27, 7-5 MENUS LOCKED 7-9 MF FEED 7-9 MIO 7-9 MP LOAD 7-10 paper out 7-5 PC INSTALL 7-10 PC LOAD 7-10 PC TRAY EMPTY 7-10 self test 7-6 status 7-6 toner cartridge 7-5 troubleshooting 7-5 W0 JOB
  • HP LaserJet 4v/mv | Service Manual - Page 245
    6-14 laser/scanner assembly 6-20 main drive assembly 6-22 main motor, M1 6-21 memory upgrade 6-5 MP drive gears 6-30 MP guide plate assembly 6-29 MP tray 6-32 paper guide 6-43 paper guide plate assembly 6-28 power supply unit 6-18 rear cover 6-12 rear exhaust fan, FM2 6-17 registration roller 6-39
  • HP LaserJet 4v/mv | Service Manual - Page 246
    1-3 standard printer memory 1-3, 7-28 static charge eliminator removal and replacement 6-10 status messages 7-6 - 7-10 see also printer messages (for complete listing) STBY, printer timing 5-28 storing print media 1-10 supplies 8-5 see also accessories and supplies SW501, toner cartridge microswitch
  • HP LaserJet 4v/mv | Service Manual - Page 247
    W3 JOB ABORTED, clearable warning message 7-15 W8 JOB 600/OFF, clearable warning message 7-15 W9 JOB 600/LTR, clearable warning message 7-15 WAIT, printer timing 5-28 warning messages 7-15 warranty 1-22 WD DISK NOT INIT, clearable warning message 7-15 white stripes 7-24 wiring diagrams, main 7-37 WM
  • HP LaserJet 4v/mv | Service Manual - Page 248
    Index Index-10
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242
  • 243
  • 244
  • 245
  • 246
  • 247
  • 248
Service Manual
HP LaserJet 4V / 4MV
(C3141A / C3142A)