HP LaserJet 2200 Manuel de service Page 99
- Page / 324
- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
C7058-90936 Printer functionality and operation 83
Writing stage
At the laser/scanner assembly, two laser beams focus onto the photosensitive drum and discharge
the drum's negative potential. This creates a latent electrostatic image, which later is developed into
a visible image.
Two small laser diode beams shine onto a rotating, six-sided mirror. As the mirror rotates, the beams
reflect off the mirror and sweep the page from left to right.
A set of lenses and mirrors focuses the horizontal sweeping beams through the beam access slots in
the rear of the toner cartridge and onto the photosensitive drum. Because the beams sweep the
entire length of the drum while the drum rotates, the entire circumference of the drum can be
covered. Each successive sweep of the beams is offset 1/1200th of an inch. This is how the printer
achieves its 1200 dpi resolution.
At the beginning of each sweep (before the beams reach the drum), the beam detect mirror reflects
the beams. The momentary pulse of light goes to the engine controller PCB, which converts the light
to an electrical signal used to synchronize other activities in the printer and to diagnose problems
with the laser/scanner assembly.
Portions of the drum not exposed to the laser still contain the uniform negative potential (placed there
by the primary charging roller), but those portions exposed to light have been discharged to ground
to form the latent electrostatic image.
Figure 44. Laser/scanner system
Engine controller
formatter
/ACC
/DEC
CNT0
CNT1
CNT2
BDI
/VDATA1
VDATA1
/VDATA2
VDATA2
Cylindrical lens
Scanning mirror
Focusing lens
Laser driver
Scanner motor
Mirror
Beam Detect mirror
- Service Manual _____________ 3
- Warranty 4
- Trademark Credits 4
- Table of contents 5
- 4 Printer maintenance 7
- 5 Theory of operation 7
- C7058-90936 10
- List of figures 11
- C7058-90936 xi 13
- List of tables 15
- 1 Product information 17
- Printer features 18
- Printer features 3 19
- ENERGY STA R 19
- Identification 20
- Specifications 21
- Product overview 23
- Figure 6 25
- Internal assembly locations 26
- Safety information 27
- Laser safety 28
- LED safety 28
- Regulatory information 28
- FCC regulations 28
- Declaration of conformity 28
- Protecting the environment 29
- Material safety data sheet 30
- Service approach 31
- Supplemental documentation 32
- Consumables 33
- World Wide Web 33
- Technical assistance 34
- Technical assistance 19 35
- Table 8. Worldwide offices 35
- Technical assistance 21 37
- Technical assistance 23 39
- 2 Operating requirements 41
- Site requirements 42
- Printer space requirement 43
- Media specifications 44
- Media input options 46
- Tray 1 media sizes 47
- Tray 3 (500-sheet feeder) 48
- Envelope specifications 49
- Envelope storage 50
- Envelope margins 50
- Label specifications 51
- Transparency specifications 52
- Storing print media 52
- Shipping print media 53
- Paper fillers 53
- Testing media specifications 53
- Metric Sizes 54
- Caliper field test 55
- Paper-finish field test 55
- Moisture-content field test 55
- Grain field test 55
- Curl field test 56
- Cut-edge condition field test 56
- Tools and suppliers 57
- 3 Printer configuration 59
- Using the control panel 60
- Printing a demo page 61
- Figure 18. Demo page (back) 62
- Self test/configuration page 63
- Continuous self test 66
- Engine test 67
- Service mode 68
- Setting the page count 69
- PJL Command Description 70
- Resetting the printer 71
- Network printing 72
- Figure 25. Network cable 73
- IR printing 74
- Service check points 76
- General cleaning 77
- Internal cleaning 78
- Figure 30. Wipe residue 79
- Engine cleaning 80
- Toner cartridge information 81
- Refilled toner cartridges 82
- Recycling toner cartridges 82
- Toner cartridge weights 82
- Saving toner with EconoMode 82
- Redistributing the toner 83
- Basic operations 86
- Printer timing 88
- Formatter system 89
- Engine control system 89
- Image formation system 89
- Paper pickup and feed system 89
- Formatter hardware 91
- Formatter subsystem 91
- Memory management 92
- Engine control subsystems 94
- Power supply and control 95
- Figure 40 97
- Photosensitive drum 97
- Cleaning stage 97
- Figure 42. Cleaning stage 98
- Conditioning stage 98
- This is how the printer 99
- Developing stage 100
- Transferring stage 101
- Fuser stage 101
- Pickup/feed system 102
- Figure 48 103
- Sheet feeder 104
- Figure 50 105
- Media detection 106
- Jam detection 107
- Reversing sensors 108
- Duplexer sensors 108
- Paper-feed sensor 108
- 6 Removal and replacement 109
- Required tools 111
- Remove the toner cartridge 112
- Remove tray 3 113
- Remove I/O cover 114
- Remove EIO card 114
- Remove DIMM cover 115
- Remove rear cover 116
- Figure 63. Remove rear cover 117
- Remove top cover 118
- Figure 68. Remove top cover 120
- Remove left cover 121
- Remove tray 1 122
- Disconnect tray 1 pivot arms 123
- Remove tray 1 door 123
- Figure 74. Remove pivot arms 124
- Remove transfer roller 125
- Remove DIMM 127
- Remove formatter PCB 128
- Remove EIO shield and guide 129
- Remove fuser assembly 130
- Remove mounting screws 131
- Remove pressure roller 135
- Remove duplexer tray 136
- Remove duplexer media guide 137
- Remove power supply assembly 138
- Remove laser/scanner assembly 144
- Remove ribbon cable harness 148
- Remove duplexer reverse motor 149
- Remove printer drive assembly 150
- Remove main motor 152
- Remove motor plate 153
- Motor plate retaining clip 154
- Remove tray 1 pickup roller 156
- Figure 114. Release roller 157
- Remove tray 1 solenoid 164
- Replace tray 2 pickup roller 168
- Remove tray 2 solenoid 172
- Remove registration assembly 174
- Remove cooling fan 177
- Remove toner-cartridge guide 178
- Figure 145. Spring loop 181
- 7 Troubleshooting 193
- Troubleshooting process 194
- Troubleshooting process 179 195
- Troubleshooting process flow 196
- Power-on 197
- Control panel lights 198
- Control-panel light messages 198
- GO. The page containing the 201
- Go to clear the error 201
- GO and JOB CANCEL 203
- Media-handling problems 208
- Jam troubleshooting 209
- Location of jams 211
- Type of jam 212
- Media problems 213
- Evaluate the test pages 214
- Check the toner cartridge 216
- EconoMode 216
- Image defect tables 217
- Table 40. Image defects 218
- Problem Cause Solution 218
- Repetitive defect ruler 223
- Media troubleshooting 225
- Isolate a media brand 226
- Isolate a media type 227
- Embossed media 228
- Adhesive labels 228
- Envelopes 229
- Transparencies 230
- Chemically treated media 230
- Synthetic media 230
- Coated media 230
- Other special media 230
- Evaluate media use practices 231
- Media storage environment 232
- Communication troubleshooting 233
- JetDirect configuration page 234
- CARD READY 235
- Reference diagrams 236
- Figure 166 237
- Figure 169 239
- Engine controller PCB 240
- Cooling fan 240
- Figure 172 241
- 8 Parts and diagrams 243
- Introduction 244
- Introduction 229 245
- Illustrations and parts lists 247
- Top cover assembly 249
- Table 45. Top cover assembly 250
- Internal components 251
- Figure 179 253
- Figure 180 255
- Figure 181 257
- Figure 182 259
- Power supply assembly 261
- Printer drive assembly 263
- Cassette pickup assembly 265
- Fusing assembly 267
- Table 54. Fusing assembly 268
- PCB assembly location 269
- 500-sheet feeder cassette 283
- Alphabetical parts list 291
- Alphabetical parts list 277 293
- Alphabetical parts list 279 295
- Alphabetical parts list 281 297
- Alphabetical parts list 283 299
- Numerical parts list 300
- Numerical parts list 285 301
- Numerical parts list 287 303
- Numerical parts list 289 305
- Numerical parts list 291 307
- EN Index 293 309
- Numerics 309
- 294 Index EN 310
- EN Index 295 311
- 296 Index EN 312
- EN Index 297 313
- 298 Index EN 314
- EN Index 299 315
- 300 Index EN 316
- EN Index 301 317
- 302 Index EN 318
- EN Index 303 319
- 304 Index EN 320
- EN Index 305 321
- 306 Index EN 322
- *C7058-90936* 324
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