HP 9040 Service Manual Page 78
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- Table of contents
- TROUBLESHOOTING
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62 Chapter 4 Product maintenance
Internal cleaning
During the printing process, paper, toner, and dust particles can accumulate inside the printer and
the paper-handling accessories. Over time, this buildup can cause print-quality problems such as
toner specks or smearing. Internal cleaning can assist in correcting and preventing these types of
problems.
CAUTION Before you begin these steps, turn the printer off and unplug all of the power cords to avoid shock
hazard.
1 Turn the printer off and unplug all of the power cords.
Figure 14. Turn off the printer and remove the power cords
CAUTION To prevent damage to the print cartridge, use two hands when removing it from the printer.
2 Open the front cover, turn the green lever counterclockwise to the unlocked position, and then
slide the print cartridge out of the printer.
Figure 15. Remove the print cartridge
CAUTION To prevent damage, do not expose the print cartridge to light. Place a piece of paper over the print
cartridge to shield it while it is out of the printer.
- HP LaserJet 9000/9040/9050 1
- Service_____________________ 3
- NERGY STAR 4
- Table of contents 5
- 4 Product maintenance 6
- 5 Theory of operation 6
- List of tables 11
- List of figures 13
- 1 Product information 17
- HP LaserJet 9040/9050 printer 20
- Product specifications 22
- Product overview 26
- Interface connections 27
- Optional accessories 28
- Regulatory information 29
- Service approach 30
- 2 Product requirements 31
- Site requirements 32
- Space requirements 33
- 2,591 mm (102 inches) 34
- Media specifications 35
- Label specifications 36
- Transparency specifications 37
- Storing print media 38
- Envelope storage 39
- Media input/output options 41
- 3 Product configuration 45
- Using the control panel 46
- Control-panel buttons 47
- Numeric keypad commands 48
- Settings and defaults 49
- Settings and defaults 35 51
- Printer driver information 52
- Control-panel menus 53
- Retrieve job menu 54
- Information menu 54
- Paper-handling menu 55
- Item Values Explanation 56
- Configure device menu 57
- PCL submenu 58
- Configure device menu 43 59
- Print-quality submenu 60
- Configure device menu 45 61
- System setup submenu 62
- Configure device menu 47 63
- I/O submenu 64
- EIO X Jetdirect submenu 65
- Configure device menu 51 67
- Resets submenu 69
- Diagnostics menu 70
- Service menu 70
- Windows systems 71
- NTER for each 72
- NTER to exit the FTP session 72
- Continue 74
- Preventative maintenance 76
- General cleaning 77
- Internal cleaning 78
- Fuser cleaning 81
- Process a cleaning page 82
- Print cartridge information 83
- Refilled print cartridges 84
- Print-cartridge weights 84
- Basic operation 86
- State Period Operation 88
- Power-on sequence 89
- Timing chart 90
- Engine control system 91
- DC controller PCA 92
- DC controller operations 93
- Low-voltage power supply unit 96
- Formatter system 97
- Laser/scanner system 99
- Image formation system 100
- Print cartridge 101
- Cartridge memory 102
- Toner seal 102
- Toner-level detection 102
- Pickup and feed system 103
- Jam detection 104
- Pickup and feed system 89 105
- Sensor/switch Description 106
- Pickup and feed system 91 107
- Motor/solenoid Description 108
- Tray 1 driver PCA 109
- Power supply 109
- Sequence of operation 109
- Pickup and feed 110
- Tray 4 driver PCA 111
- 6 Removal and replacement 113
- Introduction 115
- Right top cover 117
- To reinstall 118
- Left top cover 119
- Front cover 120
- Right door 121
- Right lower cover 122
- Left door and diverter 123
- Left back cover 124
- Back cover 125
- Right and left rail covers 126
- Top assemblies 127
- Laser/scanner assembly 128
- Delivery assembly 129
- Delivery-fan assembly 130
- Delivery motor 132
- Cartridge release lever 133
- Front assemblies 135
- Transfer-roller assembly 136
- Front assemblies 121 137
- Figure 61. Tray 2 or tray 3 137
- Fuser-jam-removal knob 139
- Registration-jam-removal knob 140
- Right assemblies 141
- Paper-input unit (PIU) 142
- Registration assembly 145
- Transfer-guide assembly 147
- Left assemblies 149
- Fuser assembly 150
- Back assemblies 151
- Low-voltage power supply 152
- High-voltage power supply 153
- DC controller 154
- Toner-sensor contact assembly 156
- Drum motor 157
- Feed-drive assembly 158
- Power-supply fan (fan 1) 159
- Cartridge fan (fan 5) 160
- Controller fan (fan 2) 161
- Jetlink connector 162
- Fuser delivery-drive assembly 165
- Orientation 167
- Left side cover 167
- Right side cover 168
- Back covers 169
- Drive motor 173
- Drive assembly 174
- Controller board 175
- Pickup assembly 178
- Paper-connecting unit 179
- 7 Troubleshooting 181
- Troubleshooting process 183
- Troubleshooting process 169 185
- Envelopes are wrinkling 188
- Fusing is poor 188
- Power-on 190
- Event log page 191
- Sample event log 192
- View the event log 193
- Control-panel messages 194
- Printer-message tables 195
- Alphabetical error messages 196
- AUSE/RESUME to return the 200
- Numerical error messages 204
- position 225
- Paper-path test 229
- Service test 229
- Code Description FRU 230
- Service-level diagnostics 231
- Diagnostics flowchart 232
- Cold reset 233
- AUSE/RESUME (START on MFPs) 234
- ENU (START on MFPs) 236
- Tray 4 diagnostics 237
- Standalone running test 238
- Sensor test 238
- Light-pattern interpretation 239
- Jam troubleshooting 240
- Customer print job 241
- Clearing jams 241
- Configuration page 242
- Verify installed options 244
- Jetdirect page 245
- Supplies status page 246
- Usage page 247
- File directory page 248
- Check the print cartridge 250
- EconoMode 250
- Image-defect tables 251
- Table 29. Image defects 252
- Problem Cause Solution 252
- SMALL PAPER 257
- SPEED=SLOW 257
- PAPER SPEED 258
- Repeating defect ruler 259
- Media troubleshooting 260
- Isolate a media brand 261
- Isolate a media type 261
- Communication troubleshooting 262
- HP LaserJet 9040mfp only) 263
- Ping-test results 264
- Connectivity problems 266
- Save + Restore 266
- Wiring diagrams 267
- Wiring diagrams 253 269
- 8 Parts and diagrams 271
- Common hardware 277
- Illustrations and parts lists 278
- Right cover assembly 281
- Internal 282
- Internal 267 283
- Internal 269 285
- (if different) 285
- Internal 271 287
- Internal 273 289
- Drum feed drive assembly 290
- Fuser delivery drive assembly 291
- Cartridge lifter assembly 292
- RG5-5635-080CN 1 293
- Paper input unit 294
- Transfer roller assembly 296
- Table 47. Delivery assembly 298
- PCA assembly location 299
- Tray 4 main body 300
- Tray 4 285 301
- Tray 4 287 303
- Tray 4 drive assembly 304
- Tray 4 PCA location 305
- Alphabetical parts list 307
- Alphabetical parts list 293 309
- Alphabetical parts list 295 311
- Numerical parts list 312
- Numerical parts list 297 313
- Numerical parts list 299 315
- Index302 Index 318
- Index Index303 319
- Index304 Index 320
- Index Index305 321
- Index306 Index 322
- Index Index307 323
- Index308 Index 324
- Index Index309 325
- Index310 Index 326
- Index Index311 327
- Index312 Index 328
- Index Index313 329
- Index314 Index 330
- *Q3721-90963* 332
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