HP HP LaserJet Printer 8000 Service Manual Page 419
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- Table of contents
- TROUBLESHOOTING
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C4085-91087 Display 391
Display
The Control Panel should display READY, OFFLINE, or POWERSAVE ON.
For information about errors displayed, access the Event Log. If the
display is blank, see “Power On Defects or Blank Display” on
page 387.
Event Log
Use the Event Log to diagnose and troubleshoot printer errors and
intermittent failures. You can either print or display the Event Log from
the Control Panel’s Information Menu. (Select PRINT EVENT LOG or
SHOW EVENT LOG.) (The Configuration Page lists the maximum number
of entries in the Event Log.)
See figure 7-5 on page 392 for a sample Event Log. The Event Log
shows the current page count at the left side of the page, with the
printer's serial number directly to the right of the page count. The left
column is the error sequence number, with the error listed on the right
(the highest sequence number is the most recent event logged). The
next column is the page count at the time of the error, and the last
column is the Personality (PCL or PostScript) column or the Jam
Cause at the time of the error.
See “Printer Message Tables” on page 403 for more information
about correcting Event Log messages in the printer and paper
handling devices.
- Service Manual 1
- Conventions 5
- Chapter Descriptions 6
- Subject Index 7
- Table of Contents 9
- 2 Site Requirements 10
- 3 Operating Overview 10
- 4 Maintenance and Adjustments 11
- 5 Functional Overview 11
- 6 Removal and Replacement 12
- 7 Troubleshooting 15
- 8 Parts and Diagrams 15
- List of Figures 17
- List of Tables 25
- Product Information 29
- Printer Features 30
- Paper Capacities and Sizes 32
- Identification 34
- Specifications 35
- Media Selection Guidelines 39
- Adhesive Labels 40
- Transparencies 41
- Storing Print Media 41
- Shipping Print Media 41
- Product Overview 42
- Formatter Assemblies 46
- Accessories and Options 47
- Ordering Information 48
- Hard Disk 54
- 11 x 17 in, A3 16 MB 16 MB 55
- Legal 16 MB 16 MB 55
- 11 x 17 in, A3 24 MB 24 MB 55
- Service Approach 56
- Exchange Program 57
- Consumables 57
- Toner Cartridge Life 57
- Cartridges 58
- Recycling Toner Cartridges 58
- Technical Assistance 59
- Internet 60
- World Wide Web 60
- Other Areas 60
- Warranty 61
- Warranty Limitations 62
- Regulatory Information 63
- FCC Regulations 63
- Protecting the Environment 64
- HP LaserJet Printer 65
- Material Safety Data Sheet 66
- Environmental Conformity 67
- Declaration of Conformity 68
- Safety Statements 70
- Korean EMI statement 71
- Laser Statement for Finland 71
- Site Requirements 73
- Operating Environment 74
- Space Requirements 75
- Environmental Requirements 77
- Operating Overview 79
- Using the Control Panel 80
- Indicator Lights 81
- Settings and Defaults 82
- Printer Driver Information 82
- Paper Source Default 82
- Resetting the Printer 83
- Control Panel Menus 86
- Information Menu 87
- Paper Handling Menu 88
- Print Quality Menu 90
- Printing Menu 92
- Configuration Menu 95
- I/O Menu 98
- EIO Menu 100
- Resets Menu 102
- Service Mode 103
- Testing the Printer 108
- Maintenance and 109
- Adjustments 109
- Cleaning the Printer 111
- Cleaning Spilled Toner 112
- Preventative Maintenance 113
- Tray Adjustment Procedure 114
- Procedure 116
- Functional 119
- Overview 119
- Power Distribution System 121
- AC Power Distribution 122
- Toner Cartridge Detection 123
- Print Density Adjustment 123
- Formatter System 124
- Resolution Enhancement (REt) 125
- EconoMode 126
- DC Controller System 127
- Engine Test Microswitch 128
- Image Formation System 129
- Toner Cartridge 130
- The Photosensitive Drum 131
- Drum Cleaning 132
- Drum Conditioning 133
- Image Writing 134
- FastRes 1200 135
- Image Developing 136
- Image Fusing 139
- Paper Paths and Components 140
- Printing from Tray 1 143
- Printing from Trays 2 and 3 143
- Printing with the Duplexer 144
- Pickup and Feed System 147
- Lifter Operation 149
- Power Supply 149
- 2 x 500-sheet Input Tray 150
- Control Device Title Location 151
- Power-on Sequence 156
- Receiving Paper 156
- Delivering Paper 157
- Job Separator Mode 158
- Virtual Stacker Mode 158
- Collator Mode 158
- 8-bin Mailbox Components 160
- Mailbox Mode 164
- Stapler Unit Operation 167
- Power-On or Reset Sequence 168
- Paper Feed Cycle 169
- Stapling Cycle 170
- Eject Cycle 170
- Paper Jam Detection 172
- Printer Timing 172
- Removal and 177
- Replacement 177
- Required Tools 179
- User Installable Accessories 180
- Disk Drive 181
- To remove the disk drive: 181
- To reinstall the disk drive: 181
- Duplexer 182
- Envelope Feeder 182
- To Reinstall: 183
- 7-bin Tabletop Mailbox 185
- Hardware Table 188
- Control Panel 191
- AC Access Cover 194
- Back Cover 195
- Front Cover 196
- Left Lower Cover 198
- Top Cover 199
- Diverter Assembly 205
- Lower Right Door Assembly 207
- (figure 6-18, callout 3) 209
- Fan Housing 210
- Fan 1 Motor 211
- Fan Motor 213
- 5 Remove the tray 217
- Tray 1 Pickup Assembly 218
- Feeder Assembly 222
- Formatter Assembly 224
- Fusing Assembly 226
- Laser/Scanner Assembly 228
- Main Gear Assembly 230
- Output Paper Sensor PCA 236
- Paper Size PCA 240
- Registration Assembly 245
- Feed Roller 248
- Tray 1 Separation Pad 249
- Paper Input Unit Sensor (PS2) 251
- Registration Sensor (PS1) 253
- Transfer Roller Assembly 256
- Orientation 260
- Main Drive Assembly 265
- Controller PCA 270
- Pickup Assembly 274
- To Remove the Pickup Roller 279
- Assemblies (2 of 2) 282
- Vertical Transfer Unit (VTU) 283
- Tension Springs 285
- Locating Pins 286
- Adjustable Foot 288
- Left Cover 292
- To reinstall: 295
- Right Cover 296
- Front Top Cover 299
- Trays 4 and 5 302
- Paper Deck Drive Assembly 306
- Tray-Size Sensing PCA 310
- Main Cable 313
- Storage Paper Tray 315
- Front Door (Storage Area) 316
- Front LED PCA 320
- To replace 325
- Paper Path Cover 335
- Face-down Bins 338
- Empty Bin Sensor PCA 341
- Face-up Sensors PCA 346
- Reversing Mechanism Motor 347
- Short Tray 7 352
- Solenoid Reversing Mechanism 353
- Flipper Solenoid 354
- Cover Latch 357
- Flipper Assembly 364
- Transport Belt Motor 368
- Input Paper Guide 370
- Anticurl Strings 376
- Delivery Head Assembly 378
- Diagnostic LED PCA 384
- User Status LED PCA 386
- Adjustable and Fixed Casters 388
- Installation 391
- Back Plate 393
- Stapler Controller PCA 395
- Stapler Bed Assembly 399
- Troubleshooting 403
- Troubleshooting Process 404
- “Printer Messages” 405
- Preliminary Operating Checks 408
- 1. Paper Path 414
- 2. Paper Surface 414
- 3. Paper Storing and 414
- Handling 414
- 4. Paper Type 414
- Power On 415
- Problem Action 416
- Engine Test Button Location 418
- Printing an Engine Test 418
- Event Log 419
- Figure 7-5 Sample Event Log 420
- Most recent error 420
- Print the Event Log 421
- Display the Event Log 421
- Interpret the Event Log 422
- Specifications Guide 423
- Paper Jams 424
- To perform a paper path test: 426
- Customer Print Job 427
- Clearing Paper Jams 428
- Clearing Repeated Paper Jams 428
- Printer Messages 429
- Printer Message Tables 431
- Engine Error Messages 432
- 8-bin Mailbox Error Messages 457
- Stapler Error Messages 463
- Duplexer Error Messages 466
- Diagnostics 468
- 1 Off On On Off 470
- 2 Off On Off Off 470
- 3 Off Off Off On 470
- 4 Off On On On 470
- 3OffOffOffOn 473
- 1 Off On On Off Off 476
- 2 Off On Off On Off 476
- 3 Off Off On Off On 476
- 4 Off On Off On On 476
- Long Short 479
- Error Number/ 479
- Meaning Recommended Action 479
- 1 2 Bin full when running 480
- Power-on Test 482
- 8-bin Mailbox Paper Path Test 483
- Information Pages 489
- Figure 7-11 Sample Menu Map 490
- Configuration Page 491
- Verify Installed Options 493
- Communication 495
- Image Quality 497
- Check the Toner Cartridge 498
- Image Quality Tables 499
- Table 7-27. Fading Print 500
- C4085-91087 Image Quality 473 501
- Table 7-28. Dropout 502
- C4085-91087 Image Quality 475 503
- Table 7-30. Toner Smear 503
- C4085-91087 Image Quality 477 505
- C4085-91087 Image Quality 479 507
- Table 7-36. Image Skew 508
- C4085-91087 Image Quality 481 509
- Table 7-37. Bubble Print 509
- Repetitive Defect Ruler 512
- Image System Troubleshooting 513
- C4085-91087 Image Quality 487 515
- Network Troubleshooting 516
- Verify Host System Operation 518
- Diagrams 519
- C4085-91087 Diagrams 493 521
- C4085-91087 Diagrams 495 523
- C4085-91087 Diagrams 497 525
- C4085-91087 Diagrams 499 527
- C4085-91087 Diagrams 501 529
- PS FUFULL 531
- PS FACEUP 531
- PS ENTRY 531
- Parts and Diagrams 533
- Ordering Parts 534
- Accessories and Supplies 535
- Illustrations and Parts Lists 535
- Paper-Handling Components 536
- Printer Parts and Diagrams 540
- Fig Ref Description Part QTY 545
- 2000-sheet Input Tray 552
- 34 Latch XZ9-0379-000CN 1 558
- 8-bin Mailbox 564
- Finisher 570
- Alphabetical Parts List 572
- Numerical Parts List 583
- C4085-91087 Index 567 595
- Numerics 595
- see also 596
- C4085-91087 Index 569 597
- 570 Index C4085-91087 598
- C4085-91087 Index 571 599
- C4085-91087 Index 573 601
- 574 Index C4085-91087 602
- C4085-91087 Index 575 603
- 576 Index C4085-91087 604
- C4085-91087 Index 577 605
- 578 Index C4085-91087 606
- Service Manual Supplement 611
- (C4781A, C4782A, C4785A) 611
- HP 2000-sheet Input Tray 612
- (C4781A) 612
- HP Multibin Mailbox 612
- (C4785A) 612
- HP Duplex Unit (C4782A) 612
- Contents 615
- New Product Features 621
- Theory of Operation 622
- Features 623
- Paper Path 625
- Theory of Operation 1-5 626
- 1-6 Theory of Operation 627
- Switches Functionality 628
- Operating Modes 629
- 1-10 Theory of Operation 631
- Theory of Operation 1-11 632
- Duplexer Theory of Operation 637
- Removal and Replacement 638
- To remove a photosensor: 651
- Separation Rollers 653
- Assembly 655
- Removal and Replacement 2-19 656
- 2000-sheet Input Tray VTU 657
- Figure 2-19 658
- Figure 2-20 659
- 2000-sheet Input Tray Casters 661
- Figure 2-23 662
- Multibin Mailbox Removal and 663
- Multibin Mailbox Top Cover 665
- Multibin Mailbox Power Supply 666
- 2-32 Removal and Replacement 669
- Removal and Replacement 2-33 670
- Removal and Replacement 2-37 674
- Removal and Replacement 2-39 676
- Removal and Replacement 2-41 678
- Removal and Replacement 2-43 680
- Removal and Replacement 2-45 682
- 2-46 Removal and Replacement 683
- Figure 2-47 685
- Removal and Replacement 2-49 686
- Figure 2-49 687
- Removal and Replacement 2-51 688
- 4 Remove the Caster 689
- 2-54 Removal and Replacement 691
- Troubleshooting Approach 693
- Print a Configuration Page 694
- 3-4 Troubleshooting 695
- Troubleshooting 3-5 696
- C-link Communication Cables 697
- Paper Path Test 698
- 3-8 Troubleshooting 699
- Messages Structure 700
- Error Messages 700
- Figure 3-5 704
- 3-16 Troubleshooting 707
- Troubleshooting 3-17 708
- 3-18 Troubleshooting 709
- Wiring Diagrams 710
- 3-20 Troubleshooting 711
- Troubleshooting 3-21 712
- 3-22 Troubleshooting 713
- Troubleshooting 3-23 714
- 3-24 Troubleshooting 715
- 4-2 Parts 717
- Parts 4-3 718
- 4-4 Parts 719
- Parts 4-5 720
- 4-6 Parts 721
- Multibin Mailbox Components 722
- 4-8 Parts 723
- Parts 4-9 724
- 4-10 Parts 725
- 4-12 Parts 727
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