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TROUBLESHOOTING
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Figure 7-8
Image Defect Sum
mary
Troubleshooting 7-37
1
2
...
262
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267
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...
452
453
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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