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- Table of contents
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Sensor PCA Removal
1 Remove the Right, Left, Top, and Font Door covers. You need
not remove the MP Tray.
2 Perform the Paper Control PCA removal procedure, as shown
in the preceding section.
3 Disconnect the connectors for SL1, SL2, and M2 from the left
end of the Sensor PCA.
4
Release the (3) clips that hold the Sensor PCA cover. Remove
the cover (see Figure 6-50, callout 1).
5 Remove the Sensor PCA by sliding it to the left and dropping
it down.
Figure 6-50 Sensor PCA Removal
6-60 Removal and Replacement
- Combined Service 1
- Conventions 3
- Contents 5
- Preventive Maintenance 7
- Troubleshooting 10
- Parts and Diagrams 11
- Duplexer 11
- LaserJet 5/5M/5N Printer 12
- Contents-9 13
- Contents-10 14
- Product Information 15
- Product Family Information 16
- • PostScript Level 2 SIMM 16
- • AppleTalk MIO Card 16
- • 4 MBytes of RAM 16
- Identification 17
- 1-4 Product Information 18
- Specifications 19
- 1-6 Product Information 20
- Related Documentation 21
- Safety Information 22
- FCC RFI Statement 23
- Toner Safety 25
- Ozone Statement 25
- Doing Business with HP 26
- HP CompuServe Forum 27
- Customer Information Centers 27
- Printer Drivers 27
- Other Areas 28
- Site Planning and 29
- Requirements 29
- Printer Space Requirements 30
- Adhesive Labels 33
- Overhead Transparencies 34
- Envelopes 34
- Envelope Construction 35
- Configuration 37
- Using The Control Panel 38
- Indicator Mode Description 39
- Table 3-1 39
- Indicator Lights 39
- Configuration 3-3 39
- Key Function 40
- Table 3-2 40
- Control Panel Key Functions 40
- 3-4 Configuration 40
- Reset Menu 41
- Figure 3-2 Control Panel Map 43
- Configuration 3-7 43
- Item Options Explanation 44
- Table 3-3 Printer Menu Items 44
- 3-8 Configuration 44
- Table 3-3 PCL Menu Items 45
- Table 3-4 Job Menu Items 45
- Configuration 3-9 45
- 3-10 Configuration 46
- (HP LJ 4 only) 48
- Printer Features 49
- Resolution Enhancement (REt) 52
- Density 53
- Network Security 54
- 1 Turn OFF the printer 59
- Configuration 3-25 61
- 3-26 Configuration 62
- Configuration 3-27 63
- Test Print Button 65
- System Configuration 67
- Serial MS-DOS Commands 68
- Printer I/O Configuration 69
- Serial Cable Pin-outs 71
- 3-36 Configuration 72
- Configuration 3-37 73
- 3-38 Configuration 74
- Modular I/O Configuration 76
- DOS Utilities 78
- Packing the Printer 79
- Installing The Optional Lower 80
- Cassette 80
- Configuration 3-45 81
- Configuration 3-47 83
- Envelope Feeder Installation 85
- 5 Turn ON the printer 86
- SIMM Installation 87
- 3-52 Configuration 88
- Memory Requirements 89
- Accessing the SIMM Slots 91
- Installing the SIMM Boards 91
- Testing a SIMM Board 93
- Personality SIMM 94
- (PostScript) 94
- Troubleshooting a SIMM Board 95
- 3-60 Configuration 96
- Service Checkpoints 99
- Cleaning Your Printer 100
- Toner Cartridge 101
- Non-HP Toner Cartridges 105
- 1 Remove the toner cartridge 106
- Pickup Roller 110
- Functional Overview 113
- DC Controller Loads 115
- Solenoids 117
- Photosensors 118
- Sensor Description PCA 119
- Table 5-2 119
- Photosensor Signals 119
- Functional Overview 5-7 119
- Microswitches 120
- Motors 122
- Formatter System 124
- Functional Overview 5-13 125
- Memory Management 126
- Data Processing 126
- Image Formation System 128
- Photosensitive Drum 129
- Cleaning Stage 130
- Conditioning Stage 131
- Writing Stage 132
- Developing Stage 134
- Transferring Stage 136
- Fusing Stage 137
- Paper Feed System 138
- Power System 143
- 5-32 Functional Overview 144
- Basic Sequence of Operation 145
- Timing Diagrams 146
- This a 2 panel pull-out 147
- Functional Overview 5-35 147
- Plus/4M Plus/5/5M/5N 148
- 5-36 Functional Overview 148
- Warmup Period 149
- Standby Period 149
- PowerSave 149
- Initial Rotation Period 150
- Print Period 152
- Last Rotation Period 154
- Removal and Replacement 155
- PosidrivPhillips 156
- Removing the Covers 158
- Top Cover Removal 159
- 6-6 Removal and Replacement 160
- Left Side Cover Removal 161
- Rear Door Removal 162
- Cover Removal) 164
- Removal and Replacement 6-11 165
- 1 Remove the PC Tray 166
- Assemblies Removal 169
- 7 Remove the power supply 171
- Paper Feed Assembly Removal 172
- (continued on next page) 173
- Removal and Replacement 6-19 173
- 1 Open the rear door 176
- Removing the SIMMs Door 179
- Formatter Cage Removal 181
- LaserJet 4 Plus) 182
- 6-28 Removal and Replacement 182
- Formatter PCA Removal 183
- 6 Remove the Formatter PCA 185
- DC Controller Removal 187
- (LaserJet 4 Plus/5) 188
- 6-34 Removal and Replacement 188
- Dimensions 190
- 6-36 Removal and Replacement 190
- 4 Remove the Main Motor 191
- Gear Assembly Removal 192
- Fan Removal 193
- 5 Remove the fan 194
- Output Assembly Removal 195
- Scanner Assembly Removal 197
- Lower Cassette Assemblies 198
- 4 Heat Lamp 202
- 6-51 Removal and Replacement 205
- Paper Control PCA Removal 213
- Sensor PCA Removal 214
- 6-64 Removal and Replacement 218
- Interconnect PCA Removal 223
- 6-72 Removal and Replacement 226
- LaserJet 5 Error Map 227
- 7-B LaserJet 5 Error Map 228
- LaserJet 5 Error Map 7-C 229
- 7-D LaserJet 5 Error Map 230
- *Press Go on the LJ5 234
- Table 7-1 234
- Printer Messages (continued) 234
- 7-4 Troubleshooting 234
- Clearable Warnings 240
- Table 7-2 241
- Troubleshooting 7-11 241
- Procedures 242
- Checks Action 244
- Table 7-4 244
- 7-14 Troubleshooting 244
- 12 Printer Open Message 248
- 13 PAPER JAM Message 250
- Table 7-7 251
- Troubleshooting 7-21 251
- 4 Replace the DC Controller 254
- 5 Replace the DC Controller 255
- 41.X ERROR Message 257
- Table 7-9 258
- 41.X ERROR Checks 258
- 7-28 Troubleshooting 258
- 2 A temperature above 230° C 259
- 51 ERROR Message 261
- 3 Replace the DC Controller 262
- 7-36 Troubleshooting 266
- Troubleshooting 7-37 267
- Possible Cause Action 269
- Table 7-14 269
- Faulty Registration 269
- Troubleshooting 7-39 269
- Figure 7-9 PS5 Test Sheet 275
- Troubleshooting 7-45 275
- Table 7-27 277
- Background Scatter 277
- Troubleshooting 7-47 277
- Table 7-28 278
- White or Blank Pages 278
- 7-48 Troubleshooting 278
- 1 Initiate an 05 SELF TEST 279
- 3 Remove the Toner Cartridge 279
- Interface Troubleshooting 282
- Communications Checks 284
- MIO Troubleshooting 286
- 7-58 Troubleshooting 288
- Troubleshooting Aids 289
- Repetitive Defect Template 297
- 7-68 Troubleshooting 298
- Voltage Test Points 299
- 7-70 Troubleshooting 300
- Parts Lists and Illustrations 302
- Parts and Diagrams 8-3 303
- 8-4 Parts and Diagrams 304
- Parts and Diagrams 8-5 305
- Figure 8-2 Covers and Panels 306
- 8-6 Parts and Diagrams 306
- Table 8-2 Covers and Panels 307
- Parts and Diagrams 8-7 307
- 8-8 Parts and Diagrams 308
- Exchange 309
- 8-10 Parts and Diagrams 310
- Parts and Diagrams 8-11 311
- Table 8-3b Top Cover Assembly 312
- 8-12 Parts and Diagrams 312
- Parts and Diagrams 8-13 313
- 8-14 Parts and Diagrams 314
- Parts and Diagrams 8-15 315
- 8-16 Parts and Diagrams 316
- Parts and Diagrams 8-17 317
- 8-18 Parts and Diagrams 318
- Parts and Diagrams 8-19 319
- 8-20 Parts and Diagrams 320
- Parts and Diagrams 8-21 321
- 8-22 Parts and Diagrams 322
- Parts and Diagrams 8-23 323
- 8-24 Parts and Diagrams 324
- Parts and Diagrams 8-25 325
- 8-26 Parts and Diagrams 326
- Parts and Diagrams 8-27 327
- 8-28 Parts and Diagrams 328
- Parts and Diagrams 8-29 329
- Figure 8-10 Fuser Assembly 330
- 8-30 Parts and Diagrams 330
- Table 8-10 Fuser Assembly 331
- Parts and Diagrams 8-31 331
- 8-32 Parts and Diagrams 332
- Accessory Parts 333
- 8-34 Parts and Diagrams 334
- Parts and Diagrams 8-35 335
- 8-36 Parts and Diagrams 336
- Parts and Diagrams 8-37 337
- SIMM Memory 338
- Table 8-14 Universal Cassette 338
- Table 8-15 Simm Modules 338
- 8-38 Parts and Diagrams 338
- Parts and Diagrams 8-39 339
- Parts List 340
- Parts and Diagrams 8-41 341
- 8-42 Parts and Diagrams 342
- Parts and Diagrams 8-43 343
- 8-44 Parts and Diagrams 344
- Parts and Diagrams 8-45 345
- 8-46 Parts and Diagrams 346
- Parts and Diagrams 8-47 347
- 8-48 Parts and Diagrams 348
- Parts and Diagrams 8-49 349
- 8-50 Parts and Diagrams 350
- Parts and Diagrams 8-51 351
- 8-52 Parts and Diagrams 352
- Parts and Diagrams 8-53 353
- 8-54 Parts and Diagrams 354
- Parts and Diagrams 8-55 355
- 8-56 Parts and Diagrams 356
- Duplex Printing 359
- Electrical Overview 361
- Duplexer A -7 363
- 1 Open the front door 366
- A -12 Duplexer 368
- 3 Remove the assembly 372
- Duplexer A -19 375
- 2 Remove the cover plate 376
- 6 Remove the PCA 377
- 3 Lift off the guide 379
- 5 Unplug the connectors 383
- Duplexer A -29 385
- Duplexer A -31 387
- A -32 Duplexer 388
- Duplexer A -35 391
- A -36 Duplexer 392
- B-4 LaserJet 5/5M/5N Printer 398
- LaserJet 5/5M/5N Printer B-7 401
- Control Panel Layout 404
- Key Explanation 405
- Table B-8 Control Panel Keys 405
- B-12 LaserJet 5/5M/5N Printer 406
- Control Panel Menus 407
- B-14 LaserJet 5/5M/5N Printer 408
- Printing Menu 409
- * Indicates factory default 410
- B-16 LaserJet 5/5M/5N Printer 410
- PCL Fonts Menu 411
- PostScript Menu 412
- Job Menu 412
- Configuration Menu 413
- B-20 LaserJet 5/5M/5N Printer 414
- Memory Configuration Menu 415
- Parallel Menu 416
- Serial Menu 416
- Resets Menu 417
- Test Menu 418
- Service Mode 419
- Setting the Page Count 420
- Skip Demo 422
- Big Data 422
- Diagnostics 422
- Programming a Flash SIMM 423
- 1 Switch OFF the printer 424
- NVRAM Init 425
- Printout 426
- Infrared Communication 428
- IR Diodes 433
- Infrared Port Not Responding 435
- SN-1 Service Notes 445
- SN-2 Service Notes 446
- SN-3 Service Notes 447
- SN-4 Service Notes 448
- SN-5 Service Notes 449
- SN-6 Service Notes 450
- SN-7 Service Notes 451
- SN-8 Service Notes 452
- *C3916-90984* 453
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