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- Table of contents
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Fuser Assembly Configuration
Figure 6-40 provides an overview of the orientation of the major
Fuser Assembly components. Before beginning the fuser
disassembly procedures, become familiar with the location and
orientation of the various Fuser Assembly parts (see Table 6-1).
Figure 1-40 Fuser Assembly
Callout Assembly Callout Assembly
1 Exit Sensor Flag 5 Fusing Roller
2 Thermistor 6 Plug to Interconnect PCA
3 Thermoswitch 7 Pressure Roller
4 Heat Lamp
Table 1-1 Fuser Assembly Configuration
6-48 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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