Apple Color LaserWriter 12/600 PS ation User Manual Page 130
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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95.08.23.11.30
Color LaserWriter 12/600 PS Basics & Theory 1–119
The safety circuit IC (Z4) in the power supply unit monitors the fuser
temperature detect signal (
THI) sent to pin 14. If the voltage output
from the thermistor becomes about 1.6 V with an increase in the fuser
temperature, the safety circuit IC will set the output of pin 5 to “L” and
turn off the relay (RL) to shut off the power supplied to the fuser
heater.
Simultaneously, the safety circuit sensing signal (
SFSNS) sent to the
CPU on the DC controller goes “H.” With this setting, the CPU deter-
mines that a failure has occurred in the fuser assembly and notifies the
I/O controller of a power supply failure.
To reset the fuser safety circuit, turn off the printer for about 30 minutes
or discharge jumper JP102 on the DC controller board.
- Steve Rancourt 5/95 1
- Color LaserWriter 3
- Color LaserWriter 12/660 PS 4
- Overview 5
- Upgrade Path 8
- 96.11.13.15.58 10
- Basics and Theory 12
- Chapter Contents 13
- 95.08.23.11.28 14
- I. General Information 15
- Features 16
- Specifications 17
- Safety Information 21
- Status Panel 22
- Status Panel Lights 23
- Density Control Panel 24
- M C Y Bk 25
- Determined by Sensing System) 27
- Separation Voltage Forced ON 27
- Separation Voltage Forced OFF 27
- II. Basic Operation 29
- Paper Path Animation 30
- Functions 31
- Outline of Electrical System 32
- 95.08.23.11.29 33
- Outline of Drive System 39
- Toner Carousel 40
- Motor M3 40
- Drum Motor M4 40
- Position of 40
- Main Motor M2 40
- Basic Sequence of Operation 41
- III. Laser/Scanner System 42
- Laser System 43
- Laser Control Circuit 45
- Scanner System 49
- IV. Image Formation System 51
- Toner Cartridge 55
- Stages of Imaging 58
- Time (t) 59
- Stage 2: Developing 61
- Stage 4: Transfer 64
- Transfer Drum 69
- Discharge Roller 69
- (Rotates by Friction) 69
- Stage 6: Fusing 70
- /DEVAVE) goes 74
- /DEVPWM) 75
- /DEVPWM signal 75
- /HVSEP) to 78
- /HVSEPAC) 78
- /HV1AC0) 79
- /HV1DC1 signal is set 80
- Transfer Drum Lever 81
- Separation Cam 2 81
- Toner Cartridge Installation 84
- Carousel Rotation 86
- DEVHP signal is set to “H.” 87
- /DEVCAM) is set to 88
- /DEVBRK) to “H,” and 91
- Temperature/Humidity 96
- Sensor Board 96
- Toner Release 96
- Density Calibration System 97
- V. Pickup/Feed System 99
- Outline 100
- Paper Pickup 101
- Animation 102
- Paper feed direction 103
- 95.08.23.11.30 104
- Projection 106
- Paper Guide 106
- Actuator 106
- LEDDRV). If it 107
- Cassette Pickup Board 108
- /ATTSLON) turns “L” 112
- Fuser Assembly 121
- Thermistor 122
- Lower Fuser Roller 122
- Thermoswitches 122
- Upper Fuser Roller 122
- THI signal 124
- SFSNS) sent to the 130
- FXSTS) output from pin 131
- FXSTS signal alternates 131
- FXSTS signal 131
- OILSNS) goes “H.” 133
- 95.08.23.11.31 135
- Main Motor Drive Circuit 136
- Paper Jam Detection 137
- Pickup Delay 138
- Approx. 1.48 Approx. 1.48 140
- VI. System Interface 149
- Video Interface 151
- VII. Power Supply 153
- Remote Switch 156
- VIII. Sheet Feeder 157
- Pickup/Feed System 160
- Power Supply 161
- Troubleshooting 162
- Using This Chapter 163
- I. Preparation and Tips 164
- Troubleshooting Checklist 165
- 98.05.08.09.00 166
- Verifying Printer Operation 167
- Roller Diameters 171
- Startup Tests 173
- POST/Undetected Error 174
- Test Page 174
- POST Codes Matrix 175
- EPOST Codes Matrix (1 of 2) 176
- EPOST Codes Matrix (2 of 2) 177
- Diagnostic Utility 183
- Flowchart A 185
- Flowchart B 186
- Flowchart C 187
- Flowchart D 188
- Flowchart E 189
- Flowchart F 190
- Miscellaneous Issues 192
- Print Quality Issues 194
- Take Apart 196
- List of Procedures 197
- 95.08.23.09.16 198
- Toner Disposal Box 199
- Photoconductor Cartridge 202
- Fuser Access Cover 204
- Fuser Oil Bottle 206
- Fuser Oil Extraction 211
- Paper Pickup Block Removal 216
- (page 2 of 11) 219
- Grounding Spring 220
- Door-Closing Spring 220
- (page 4 of 11) 221
- Positioning Pins 222
- Pickup Block Cover 222
- Door Lever 222
- Width Guide 223
- Multipurpose Tray 223
- Pickup Trim Cover 224
- (page 8 of 11) 225
- (page 9 of 11) 226
- (page 10 of 11) 227
- 95.08.23.09.17 228
- Cassette Pickup Assembly 229
- (page 2 of 2) 231
- (page 2 of 4) 233
- (page 3 of 4) 234
- J303 J302 235
- I/O Controller Board 237
- Air Filter (page 1 of 2) 238
- Air Filter (page 2 of 2) 239
- Ozone Filter (page 1 of 2) 240
- Ozone Filter (page 2 of 2) 241
- Front Door 242
- Front Door Latch Adjustment 243
- Top Cover (page 1 of 5) 244
- Top Cover (page 2 of 5) 245
- Top Cover (page 3 of 5) 246
- Top Cover (page 4 of 5) 247
- Top Cover (page 5 of 5) 248
- About Inner Panels 249
- Inner Panel 1 250
- Inner Panel 2 251
- Transfer Drum Panel 252
- Toner Carousel Guide Panel 253
- Left Cover 254
- Rear Cover 255
- Rear Shield Plate 256
- Separation Discharge Assembly 257
- Status Panel Bottom Cover 258
- Main Motor 260
- About Fans 261
- Fuser Fan (FM1) (page 1 of 2) 262
- Fuser Fan (FM1) (page 2 of 2) 263
- Main Fan (FM2) (page 1 of 3) 264
- Main Fan (FM2) (page 2 of 3) 265
- Main Fan (FM2) (page 3 of 3) 266
- (page 1 of 2) 267
- Right Slot 270
- Left Slot 270
- I/O Interconnect Board 272
- (page 2 of 5) 274
- Cable Guide 276
- Laser/Scanner Assembly 278
- Mechanical Controller Board 279
- 12Cable Guide 281
- Cable to J1004 281
- Power Supply (page 1 of 2) 283
- Power Supply (page 2 of 2) 284
- High-Voltage Power Supply 285
- About Solenoids 286
- Cleaning Belt Drive Solenoid 287
- 95.08.23.09.18 288
- Solenoid Assembly 289
- Delivery Drive Assembly 290
- Cleaning Drive Assembly 292
- Discharge Roller 294
- Drive Assembly 294
- Transfer Drum Drive Assembly 295
- Lock Lever 296
- (page 4 of 4) 299
- I/O Board Housing 301
- (page 3 of 3) 302
- Transfer Drum 304
- Assembly 304
- (page 1 of 2) 305
- (page 2 of 2) 306
- Fuser Interconnect 308
- Cable Receptacle 308
- Toner Sensor (Emitter) 309
- (page 2 of 3) 311
- Cable Cover 314
- Transit Coupling 314
- Stopper Posts 318
- Temperature/Humidity Sensor 319
- (page 1 of 3) 320
- (page 3 of 3) 322
- (page 1 of 5) 323
- (page 3 of 5) 325
- (page 4 of 5) 326
- (page 5 of 5) 327
- Toner Carousel Interlock 332
- Developing Bias 333
- Contact Holder 333
- Developing 334
- Bias Contact 334
- Rocker Pin 334
- Carousel 336
- Sheet Feeder Front Cover 340
- Sheet Feeder Rear Cover 341
- Sheet Feeder Left Cover 342
- Right Corner Cover 343
- First Remove the cassette 344
- Rear Paper 348
- Pickup Assembly 348
- Front Paper 348
- Tension Spring 350
- (page 2 of 6) 351
- (page 3 of 6) 352
- 12Trim Piece Filter Covers 353
- Sensor Mount Plate 354
- (page 6 of 6) 355
- Finished Goods Parts 356
- Sheet Feeder Exploded View 357
- Switches 358
- Descriptions 359
- Locations 360
- 96.05.15.10.25 361
- Solenoids/Clutches 363
- Color LaserWriter 12/600 PS 364
- Motors/Fans/Heaters 365
- Circuit Boards 367
- Connector Locations 369
- Bulletins 372
- 0° to +2° 373
- Color LaserWriter 12/600PS 374
- Exploded View 375
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