HP HP LaserJet Printer 8000 Service Manual Page 443
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Diagnostics on Accessories
419
2 x 500-sheet Input Tray Motor Test
This test verifies that the three motors on the 2 x 500-sheet Input Tray
are functioning properly.
1
Identify the Back Cover (opposite side from tray door). Remove
the 4 screws in the Back Cover. Remove the Back Cover.
2
Pull open Trays 4 and 5, and open the Vertical Transfer Unit
(VTU).
3
Set the DIP switches on the Controller PCA to Motor Test Mode.
(See table 7-26 on page 418 for an explanation of the DIP switch
settings.)
4
To turn the power supply switch to Diagnostic Mode, pull out on
the blue handle.
• If the motors are working properly, you will hear them as they
rotate continuously.
• If the motors do not rotate, replace the corresponding
field-replaceable unit: either the Paper Pickup Assembly, the
VTU, or the Paper Deck Drive Assembly.
5
To stop the test, set the power supply switch back to Operational
Mode (push in), and reset the DIP switches on the Controller PCA
to the off position (see table 7-26 on page 418).
2 x 500-sheet Input Tray Standalone Running Test
This test verifies that the 2 x 500-sheet Input Tray is functioning
properly. For this test, use the LED located on the Controller PCA.
(See table 7-27 on page 421 for an interpretation of the LED
patterns.)
CAUTION
If the 2 x 500-sheet Input Tray is underneath the printer, paper jams
may occur because the printer will not pick up the paper. To prevent
excessive paper jams during this test, feed only 6 to 8 pages.
1
Make sure that there is paper in both trays.
2
Set the DIP switches on the Controller PCA for standalone
running mode (see table 7-26 on page 418 for an explanation of
the settings).
3
To test Tray 5, open Tray 4.
- 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 14
- 8 Parts and Diagrams 15
- List of Figures 17
- List of Tables 23
- Product Information 25
- Printer Features 26
- Paper Capacities and Sizes 28
- Identification 30
- Specifications 31
- Media Selection Guidelines 35
- Adhesive Labels 36
- Transparencies 37
- Storing Print Media 37
- Shipping Print Media 37
- Product Overview 38
- Formatter Assemblies 42
- Accessories and Options 43
- Ordering Information 44
- Hard Disk 50
- 11 x 17 in, A3 16 MB 16 MB 51
- Legal 16 MB 16 MB 51
- Service Approach 52
- Exchange Program 53
- Consumables 53
- Toner Cartridge Life 53
- Cartridges 54
- Recycling Toner Cartridges 54
- Technical Assistance 55
- HP CompuServe Forum 56
- Internet 56
- World Wide Web 56
- Other Areas 56
- Warranty 57
- Warranty Limitations 58
- Regulatory Information 59
- FCC Regulations 59
- Protecting the Environment 60
- Material Safety Data Sheet 62
- Environmental Conformity 63
- Declaration of Conformity 64
- Safety Statements 66
- Korean EMI statement 67
- Laser Statement for Finland 67
- Site Requirements 69
- Operating Environment 70
- Space Requirements 71
- Environmental Requirements 73
- Operating Overview 75
- Using the Control Panel 76
- Indicator Lights 77
- Settings and Defaults 78
- Printer Driver Information 78
- Paper Source Default 78
- Resetting the Printer 79
- Control Panel Menus 82
- Information Menu 83
- Paper Handling Menu 84
- Print Quality Menu 86
- Printing Menu 88
- Configuration Menu 91
- I/O Menu 94
- EIO Menu 96
- Resets Menu 98
- Service Mode 99
- Testing the Printer 104
- Figure 3-2 Configuration Page 105
- Table 3-13. Key to Figure 3-2 106
- Figure 3-3 Menu Map Page 107
- Table 3-14. Key to Figure 3-3 108
- Cold Reset 109
- Maintenance and 111
- Adjustments 111
- Cleaning the Printer 113
- Cleaning Spilled Toner 114
- Preventative Maintenance 115
- Tray Adjustment Procedure 116
- Procedure 118
- Functional 121
- Overview 121
- Power Distribution System 123
- AC Power Distribution 124
- Toner Cartridge Detection 125
- Print Density Adjustment 125
- Formatter System 126
- Resolution Enhancement (REt) 127
- EconoMode 128
- DC Controller System 129
- Engine Test Microswitch 130
- Image Formation System 131
- Toner Cartridge 132
- The Photosensitive Drum 133
- Drum Cleaning 134
- Drum Conditioning 135
- Image Writing 136
- Image Developing 137
- Image Fusing 140
- Paper Paths and Components 141
- Multibin Mailbox Components 145
- Pickup and Feed System 147
- Power Supply 147
- Control Device Title Location 149
- Operating Modes 150
- Bidirectional Environment 151
- Non-bidirectional Environment 151
- Receiving Paper 151
- Delivering Paper 151
- Communication Link 152
- Figure 5-19 C-link Connection 153
- Stapler Components 155
- Paper Feed Cycle 158
- Stapling Cycle 158
- Eject Cycle 158
- PAPER FEED CYCLE 159
- STAPLING CYCLE 159
- EJECT CYCLE STACKING 159
- Printer Input Sources 160
- Printing from Tray 1 161
- Two-Sided Printing 161
- Paper Jam Detection 162
- Printer Timing 162
- Removal and 167
- Replacement 167
- Required Tools 170
- User Installable Accessories 171
- Disk Drive 172
- Duplexer 173
- Envelope Feeder 174
- 2000-sheet or 2 x 500 175
- To Reinstall: 176
- Multibin Mailbox/5-bin 177
- Mailbox with Stapler 177
- 7-bin Tabletop Mailbox 178
- Hardware Table 181
- Table 6-1. Hardware Table 182
- Control Panel 183
- AC Access Cover 184
- Back Cover 186
- Front Cover 187
- Left Lower Cover 189
- Top Cover 190
- Diverter Assembly 196
- Door Assembly, Diverter 197
- Door Assembly, Right Lower 198
- (figure 6-17, callout 3) 200
- Fan Housing 201
- Fan Motor 202
- Fan 2, Exhaust (LVPS) 203
- Fan Housing (See Fan 2) 205
- Feeder Assembly 207
- Formatter Assembly 209
- Fusing Assembly 211
- Laser/Scanner Assembly 213
- Main Gear Assembly 215
- Main Motor Assembly 218
- Paper Input Unit (PIU) 219
- Paper Input Unit 220
- PCA, DC Controller 221
- PCA, Output Paper Sensor 222
- PCA, Paper Size 226
- Registration Assembly 231
- Feed Roller 234
- Separation Pad 235
- Sensor, Registration (PS1) 240
- Transfer Roller Assembly 243
- Tray 1 Assembly 245
- Tray 2 and 3 Assemblies 246
- Mailbox With Stapler 247
- Delivery Head Assembly 248
- Flipper Assembly 251
- Input Paper Guide 254
- Interlock Switch 255
- Jam Access Door Assembly 256
- Motor, Delivery Head Position 264
- Paper Bins and Blind Cover 268
- PCA, Controller 269
- Strings, Anti-Curl 270
- Stapler Assembly 273
- Back Plate 274
- Stapler Controller PCA 276
- Top Cover Assembly 279
- Stapler Bed Assembly 280
- Remove 2 screws 287
- (Paper Path Cover) 295
- Sensor PCA 304
- Assembly (Flipper) 310
- Mechanism 314
- 7-bin Tabletop Mailbox Handle 316
- Figure 6-124 Cover Latch 318
- 1 Remove the handle 318
- 2 x 500-sheet Input Tray 319
- Figure 6-126 Back Cover 320
- 1 Remove 4 screws 320
- To reinstall: 324
- 5 Unplug the connector 334
- Assembly 335
- Separation Rollers 337
- Sensing PCA 339
- Adjustable Foot Tip 348
- Troubleshooting 351
- Troubleshooting Process 352
- Power On 356
- Problem Action 357
- Table 7-3. Fans 358
- Fan Name Fan Location 358
- Engine Test 359
- Event Log 360
- Display 361
- Figure 7-5 Sample Event Log 361
- Most recent error 361
- Print the Event Log 362
- Display the Event Log 362
- Interpret the Event Log 363
- Information Pages 364
- Figure 7-6 Sample Menu Map 365
- Configuration Page 366
- Verify Installed Options 368
- Communication 370
- EIO Troubleshooting 372
- Verify Host System Operation 374
- Printer Messages 375
- Event Log Table 376
- HP LaserJet 8000, 8000 N 385
- 8000 DN, and HP Mopier 385
- 240 Printers Service Manual 385
- Supplement for 385
- Paper-handling Accessories 385
- HP LaserJet Family 418
- Paper Specification Guide 418
- Check the Toner Cartridge 419
- Specifications Guide 420
- HP LaserJet 421
- HP LaserJet Printer 427
- Table 7-19. Image Skew 428
- Repetitive Defect Ruler 432
- Image System Troubleshooting 433
- Image Quality 435
- Troubleshooting Checks 436
- HP LaserJet Printer Family 438
- Paper Specifications Guide 438
- Paper Path Test 439
- Customer Print Job 440
- Clearing Paper Jams 441
- Clearing Repeated Paper Jams 441
- Diagnostics on Accessories 442
- Diagnostics 446
- Accessories 450
- Paper Curl 455
- Diagrams 456
- Parts and Diagrams 465
- Ordering Parts 466
- Accessories and Supplies 467
- Illustrations and Parts Lists 468
- Paper-Handling Components 469
- Fig Ref Description Part QTY 477
- 34 Latch XZ9-0379-000CN 1 487
- Alphabetical Parts List 491
- Numerical Parts List 499
- Index 507
- Numerics 507
- 484 Index 508
- 486 Index 510
- 488 Index 512
- 490 Index 514
- 492 Index 516
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