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HP 8150dn Service Manual - Page 205

Image Fusing, Controller PCA via thermistor TH1. The DC Controller maintains - fuser error

UPC - 725184623127

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Image Fusing The Fusing Assembly bonds the toner particles into the media with a heated fusing roller and a soft pressure roller. There are two levers on the Fusing Assembly that adjust roller pressure for single sheets (down position) or envelopes (up position). Both levers must be set to the same position. The fusing roller contains two quartz-halogen lamps that provide heat for the fusing process. Fusing temperature is monitored by the DC Controller PCA via thermistor TH1. The DC Controller maintains a temperature of about 190° C during print mode. If the fusing system overheats (about 230° C), TH1 opens, interrupting power to the fusing heater, causing a 50.X FUSER ERROR. If the fusing system exceeds 230° C, the thermal fuse opens, moving power away from the fuser. Figure 5-13 Image Fusing 200 Chapter 5 Functional OverviewC4265-90907

Section	Page
Table of Contents	6
List of Tables	16
List of Figures	20
Product Information	30
Printer Features	31
Product Overview	36
External View of the Printer	36
External View of HP Digital Copier	39
Identification	42
Model and Serial Numbers	42
Paper-handling Devices, Accessories, and Options	43
Ordering Information	45
Hard Disk	52
Determining Memory Requirements	53
Paper Capacities and Sizes	55
Printer and Paper-handling Devices	55
Media Selection Guidelines	57
Printer Media Selection Guidelines	57
Copy Module Media Selection Guidelines	61
Service Approach	66
Ordering Parts	66
Exchange Program	67
Consumables	67
Toner Cartridge Life	67
Refilled Toner Cartridges and Non-HP Staple Cartridges	68
Recycling Toner Cartridges	68
Technical Assistance	69
HP FIRST (Fax Information Retrieval Support Technology)	69
Internet	69
World Wide Web	70
HP Reseller Sales and Service Support Line (US Only)	70
Other Areas	70
Regulatory Information	71
FCC Regulations	71
Environmental Product Stewardship	73
Material Safety Data Sheet	75
Environmental Conformity	76
Declarations of Conformity	77
Safety Statements	78
Warranty	82
Site Requirements	84
Operating Environment	85
Space Requirements	86
Environmental Requirements	89
Specifications	90
Printer and Paper-handling Devices	90
Copy Module	95
Operating Overview	96
Using the Printer Control Panel	97
Control Panel Layout	97
Indicator Lights	98
Settings and Defaults	99
Printer Driver Information	99
Paper Source Default	100
Performing a Cold Reset	101
Setting the Display Language	101
Printer Control Panel Menus	105
HP LaserJet 8100 Series Quick Copy Jobs Menu	106
HP LaserJet 8100 Series Private/Stored Jobs Menu	106
HP LaserJet 8150 Series Quick Copy Menu	107
HP LaserJet 8150 Series Private/Stored Jobs Menu	107
Information Menu	109
Paper Handling Menu	110
Print Quality Menu	113
Printing Menu	115
Configuration Menu	118
Configuration of MBM Menu	123
I/O Menu	124
EIO Menu	126
Duplex Registration Menu	128
Resets Menu	130
Using the HP Digital Copier Front Panel	131
HP Digital Copier Front Panel	132
HP Digital Copier Settings	141
Loading Documents into the ADF	143
Loading Documents onto the Flatbed	145
Printer Service Mode	146
Setting Page Count, Maintenance Count, and Serial Number	148
Setting the Cold Reset Default Paper Size	149
HP Digital Copier Service Mode	150
HP Digital Copier Administrator Mode	152
Remote Upgrade of the Printer Firmware	153
Upgrade HP Digital Copier Firmware	155
Testing the Printer	158
Paper Path Test	158
Configuration Page	158
Maintenance and Adjustments	162
Cleaning the Printer and Paper Handling Accessories	163
Cleaning Spilled Toner	165
Cleaning the HP Digital Copier	166
Materials	166
Vacuum Specifications	166
Cleaning ADF and Glass	167
Cleaning the Document Cover, Document Holder, and Flatbed Glass	167
Cleaning the ADF	168
Copy Module Optics Cleaning	170
Cleaning the ADF Lamp and Mirrors	170
Lubricating the ADF Gears	170
Cleaning the Carrier Unit and Mechanical Assemblies	171
Lubricating the Carrier Unit Shaft	171
Lubricating the Top of the Carrier Guide Rail	171
Lubricating the Flatbed Motor Gears	171
Cleaning the Front Panel	171
Maintaining the Printer	172
Maintaining the Copy Module	173
HP Digital Copier Maintenance Parts	173
Adjusting Printer Input Trays	174
Adjusting for Edge-to-Edge Printing	174
Adjusting Input Trays for Normal Printing	175
Adjusting the 2000-sheet Printer Input Tray	177
Adjusting Duplex Registration of the Paper Trays	179
Adjusting the Copy Module	180
Types of Adjustment	180
When to Calibrate or Adjust the Copy Module	180
Calibration Target	180
Entering the Calibration Menu in Service Mode	181
How to Perform an Offset Adjustment Calibration	182
How to Perform a Density Calibration Adjustment	182
How to Perform an ADF Vertical Magnification Adjustment	182
Functional Overview	184
Printer Functional Overview	185
Power Distribution System	186
AC Power Distribution	187
Overcurrent/Overvoltage Protection	187
High Voltage Power Distribution	188
Formatter System	190
DC Controller System	193
Laser and Scanner Drive	193
Paper Motion Monitoring and Control	193
Clutches	193
Engine Test Microswitch	194
Motors	194
Image Formation System	195
Toner Cartridge	196
Drum Cleaning	198
Drum Conditioning	199
Image Writing	200
Image Developing	202
Image Transferring and Media Separation	204
Image Fusing	205
Paper Paths and Components	206
Printer, Duplexer, and Envelope Feeder	206
Paper Size Switches (Trays 2 and 3)	209
Printing from Tray 1	210
Printing from Trays 2 and 3	210
Printing from the Envelope Feeder	211
Printing with the Duplexer	211
2000-sheet Input Tray (Tray 4) Components	212
2000-Sheet Input Tray Operation	214
2 x 500-sheet Input Tray	217
2x500-sheet Input Tray Operation	219
7-bin Tabletop Mailbox Components	221
7-bin Tabletop Mailbox Operation	223
8-bin Mailbox Components	227
8-bin Mailbox Operation	230
Finisher Components	232
Stapler Unit Operation	234
Main Functional Cycles of the Stapler (Internal Paper Path)	237
Communication Link (Daisy Chain)	238
Paper Jam Detection	240
IEEE 1284 Parallel Cable Information	242
Copy Module System	243
Function and Layout of the Copy Processor	245
Copy Module Power Up Process	247
Copy Processor Board	247
Copy Module	249
Printer components of copy module power up process	250
Notes About the MFP Printer Product ID	250
ADF Simplex Operation	251
ADF Duplex Operation	252
Copy Module Image Path	254
Communication with the Printer	256
Communication Channels	256
Print Job Interrupt	256
Paper Path and Sensors	257
Removal and Replacement	260
Removal and Replacement Strategy	261
Electrostatic Discharge (ESD) Precautions	261
Required Tools	262
User Installable Accessories	263
Hardware Table	271
Printer Assembly Removal and Replacement	273
Control Panel	274
Covers	276
Delivery Unit (for Face-down Bin)	285
Diverter Assembly	288
Diverter Door Assembly	289
Lower Right Door Assembly	290
Fan 1, Laser/Scanner and Housing (Exhaust)	293
Fan 2, Low Voltage Power Supply (Exhaust)	295
Fan 3, Formatter Fan and Housing (Intake)	296
Fan 4, Delivery Unit (Exhaust)	297
Fan 5, Tray 1 (Intake)	298
Tray 1	300
Tray 1 Pickup Assembly	303
Feeder Assembly	307
Formatter Assembly	309
Fusing Assembly	311
Laser/Scanner Assembly	313
Main Gear Assembly	315
Main Motor Assembly	318
Paper Input Unit (PIU)	319
PCA, DC Controller	320
Output Paper Sensor PCA	321
High Voltage Power Supply (HVPS)	328
Low Voltage Power Supply (LVPS)	329
Registration Assembly	330
Tray 1 Feed Roller and Separation Pad	333
Tray 2 and 3 Pickup, Feed, and Separation Rollers	335
Paper Input Unit Sensor (PS2)	337
Registration Sensor (PS1)	339
Face-up Solenoid Assembly (SL3)	341
Transfer Roller Assembly	342
Tray 2 and 3 Assemblies	344
2000-sheet Input Tray Removal and Replacement	346
Orientation	346
Front Cover	348
Back Cover	349
Left Cover	350
Right Cover	351
Main Drive Assembly	352
Paper Tray	354
Main Cable Harness	355
Controller PCA	357
Front LED PCA Assembly	359
Pickup Assembly	361
Power Supply	363
Pickup, Feed, and Separation Rollers	365
Paper Quantity Switch Assembly	368
Paper Size Switch Assembly	368
Vertical Transfer Unit (VTU)	371
Tension Springs	373
Locating Pins	374
Casters and Stabilizing Feet	375
Adjustable Foot	376
2 x 500-sheet Input Tray Removal and Replacement	377
Orientation of the 2x500-sheet Input Tray	378
Back Cover	379
Left Cover	380
Vertical Transfer Unit (VTU)	381
Right Cover	384
Front Top Cover	387
Trays 4 and 5	390
Pickup Assembly	392
Paper Deck Drive Assembly	394
Pickup, Feed, and Separation Rollers	396
Controller PCA	397
Tray-Size Sensing PCA	398
Power Supply	400
Main Cable	401
Storage Paper Tray	403
Front Door (Storage Area)	404
Casters	405
Foot Tip and Adjustable Foot Tip (Stabilizing Feet)	406
Locating Pins	407
Front LED PCA	408
Envelope Feeder	409
7-bin Tabletop Mailbox Removal and Replacement	410
Orientation of the 7-bin Tabletop Mailbox	411
Front Cover	412
Back Cover	415
Top Cover	417
Controller PCA	421
Power Supply	422
Right Door Assembly (Paper Path Cover)	423
Face-down Bins	428
Empty Bin Sensor PCA	431
Full Bin and Interlock Sensor PCA	433
LED PCA	435
Face-up Sensors PCA	436
Reversing Mechanism Motor	437
Face-up/Diverter Assembly (Flipper)	439
Short Tray 7	442
Solenoid Reversing Mechanism	443
Flipper Solenoid	444
Handle	445
Latching Mechanism	446
Cover Latch	447
8-bin Mailbox Removal and Replacement	448
Orientation	449
Front and Back Covers	450
Top Cover	452
Power Supply	453
Paper Bins and Blind Cover	454
Flipper Assembly	455
Delivery Head Motor	458
Transport Belt Motor	459
Input Paper Guide	461
Metal Tape and Housing Assembly	463
Controller PCA	465
Anticurl Strings	467
Delivery Head Assembly	469
Interlock Switch	474
Diagnostic LED PCA	475
User Status LED PCA	477
Adjustable and Fixed Casters	479
Attachment Assembly	480
Stapler Assembly Removal and Replacement	481
Mailbox with Stapler, Stapler Removal or Installation	482
Back Plate	484
Stapler Controller PCA	486
Top Cover Assembly	489
Stapler Bed Assembly	490
Hinges	492
Duplexer	493
HP Digital Copier Removal and Replacement	494
Installing the HP Digital Copier	495
Install the Optional Output Accessory	498
Install the Copy Connect EIO Board into the Printer	499
Install the Copy Connect Cable	500
Hardware Table	502
Orientation of the HP Digital Copier	504
Copy Module Maintenance Parts	505
Separation Pad Assembly	505
Pick Roller Assembly	506
Copy Module Skins	510
Document Holding Pad	510
Paper Chute Flip-out	511
Output Tray Flip-out	512
Output Tray	512
Flatbed (FB) Cover Assembly	513
ADF Latch Cap	516
ADF Cover	517
Front Panel	519
Panel Cover	524
Front Panel Brackets	525
Upper Cover	527
Copy Module Power Supply/Main Board Assemblies	529
Copy Processor Board	529
Power Supply and Main Board Tray	530
RFI Cover	532
Control PCA	534
Fan	537
Power Supply	538
Back PCA	539
Copy Module ADF Unit Assemblies	540
Optical Unit	540
ADF Lamp PCA	542
ADF Lamp	544
Sensor Unit Assembly	545
ADF Motor Unit	548
ADF Belt	549
LED Assembly PCA	551
ADF Unit	552
Copy Module Flatbed Assemblies	554
Front Panel Frame Ground Spring	554
Output Tray Brackets	555
Glass Plate Assembly	556
Home Position Sensor	558
Carrier Unit Lamp	560
Carrier Unit	563
Felt Pad	567
Feet	568
Frame Ground Spring	569
Front Lamp PCA	570
Junction PCA and Cover	571
Front Panel Ribbon Cable	573
Carrier Belt and Motor	575
Troubleshooting	578
Troubleshooting Process	579
Printer System Troubleshooting Process	582
Printer/Paper-Handling Troubleshooting Process	583
Copy Module Troubleshooting Process	586
Troubleshooting the Print System	588
Preliminary Operating Checks	588
Communication	589
Interface Troubleshooting	589
Network Troubleshooting	591
Verify Host System Operation	593
Verify Network and Server Operation	593
General Troubleshooting Information	594
Miscellaneous Problems and Solutions	594
Paper Curl	599
Troubleshooting the Printer and Paper-handling Devices	600
Engine Test	603
Event Log Pages	604
Printer Message Tables	613
Engine Error Messages	614
Input Device Messages	626
Output Device Messages	634
Finisher Devices Messages	646
Paper Handling Controller Error Messages	650
Paper Jams	652
Paper Path Test	654
Menu Map	657
Configuration Pages	659
File Directory Page	662
Usage Page	663
Check the Toner Cartridge	668
Image Quality Tables	669
Repetitive Defect Ruler	682
Image System Troubleshooting	684
High-Voltage Power Supply Check	685
Self-Diagnostics on Paper-handling Devices	687
2000-sheet Input Tray Standalone Diagnostics	687
2 x 500-sheet Input Tray Standalone Diagnostics	691
7-bin Tabletop Mailbox Standalone Diagnostics	695
8-bin Mailbox Standalone Diagnostics	700
Diagrams	708
Status Messages	725
Testing the Copy Module	735
Copy Processor LED Test	735
Copy Module Boot Up Icon Conditions	737
Copy Module Offline Test	738
Other Tests	740
Service Mode Tests	742
Parts and Diagrams	744
How to Use the Part Lists and Diagrams	745
Ordering Parts	745
Common Hardware	745
Illustrations and Parts Lists	746
Printer and paper-handling components	747
Printer Parts and Diagrams	749
Paper-Handling Devices Parts and Diagrams	763
Input Devices	763
Output Devices	770
HP Digital Copier Parts and Diagrams	781
Alphabetical Parts List (Printer and Paper- handling Devices)	796
Alphabetical Parts List (Copy Module)	806
Numerical Parts List (Printer and Paper-handling devices)	810
Numerical Parts List (Copy Module)	820