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8.7 BELT DRIVE MOTOR CIRCUIT
A dc servomotor is used as the belt drive motor. The driver IC controls the
speed of the belt drive motor. The CPU sends the speed data (programmed)
to the driver IC. The driver IC sends the pulse-width-modulation (PWM)
signal to the driver circuit, which sends the motor drive pulses.
An encoder in the servomotor has two magnetic sensors that generate two
pulse signals (phase A and B). The driver IC monitors the belt speed and
direction by these pulse signals and uses this data to regulate the motor’s
speed.
Speed
Driver
Driver
CN103-1
PWM
ON/OFF
DF Main Board (PCB 1)
Circuit
CPU
IC
Data
Phase A
Phase B
+5V
CN103-2
CN103-3
CN103-4
CN102-1
CN102-2
Forward/
Reverse
Encoder
Belt Drive
Motor
1 December 1990
8-18
- SECTION 1 2
- OVERALL MACHINE 2
- INFORMATION 2
- 1. SPECIFICATIONS 3
- 1 December 1990 10
- 4. FUNCTIONAL OPERATION 14
- 6. DRIVE LAYOUT 16
- Magnetic Clutch 20
- Solenoid 20
- Printed Circuit Board 22
- Power Packs 22
- Transformer 23
- 9. OVERALL MACHINE CONTROL 24
- 10. AC POWER AND DC POWER 25
- DISTRIBUTION 25
- 10.1 AC POWER DISTRIBUTION 27
- 10.2 DC POWER DISTRIBUTION 28
- SECTION 2 29
- SECTIONAL DESCRIPTION 29
- 1.1 OPC DRUM CHARACTERISTICS 30
- 1.2 DRUM UNIT 31
- 1.3 HANDLING THE DRUM 32
- 2. DRUM CHARGE 33
- 2.3 CHARGE CORONA CIRCUIT 35
- 2.4 GRID VOLTAGE CORRECTION 36
- ±0 (volts) 37
- 3. OPTICS 38
- 3.2 SCANNER DRIVE 39
- 3.3 LENS DRIVE 40
- 3.4 4TH AND 5TH MIRROR DRIVE 42
- Main Board (PCB1) 43
- Sampled area 45
- Main Motor On Time 49
- 3.9 SERVICE CALL CONDITIONS 51
- 4. ERASE 52
- 5. DEVELOPMENT 55
- 5.2 DRIVE MECHANISM 56
- 5.3 CROSS-MIXING 57
- Darker Lighter 58
- ±0 volts 60
- 5.5 DEVELOPMENT BIAS CIRCUIT 61
- SUPPLY 64
- I/D Sensor 65
- Toner Supply 65
- CL Solenoid 65
- 6.3 FIXED SUPPLY MODE 66
- DETECTION 68
- 6.8 TONER SUPPLY AMOUNT 71
- 6.9 TONER END DETECTION 75
- 7. IMAGE TRANSFER AND PAPER 77
- SEPARATION 77
- 7.3 PAPER SEPARATION 78
- CORONA CIRCUIT 79
- 8. DRUM CLEANING 80
- 8.2 DRIVE MECHANISM 81
- 8.3 TONER OVERFLOW DETECTION 82
- 9. QUENCHING 83
- 10.1 OVERVIEW 84
- 10.2 FRR FEED SYSTEM 85
- PAPER END DETECTION 87
- 10.5 PAPER SIZE DETECTION 90
- 10.7 SLIP CLUTCH MECHANISM 95
- 10.8 MANUAL FEED TABLE 96
- 10.9 PAPER REGISTRATION 97
- 11. IMAGE FUSING 99
- SAFETY SWITCH 100
- 11.3 FUSING LAMP CONTROL 101
- 11.5 SERVICE CALL CONDITIONS 105
- SECTION 3 106
- INSTALLATION 106
- 1. INSTALLATION REQUIREMENTS 107
- 1.2 MACHINE LEVEL 108
- 1.4 POWER REQUIREMENTS 109
- 2. INSTALLATION PROCEDURE 110
- 2.2 220/240V CONVERSION 116
- 2.3 CASSETTE MODIFICATION 117
- (OPTION) 119
- SECTION 4 128
- SERVICE TABLES 128
- 1. SERVICE TABLES 129
- 1.2 DIP SWITCHES 130
- 1.3 VARIABLE RESISTORS 133
- 2. SERVICE PROGRAM MODE 135
- 2.1.4 Others 138
- #52, #55, and #59 138
- *5: Exposure 139
- *6: Jam Detection 139
- *11: All Indicators 139
- *48: Light Intensity 143
- *52: Fusing 143
- *55: Vsg & Vsp 144
- *59: Bias Voltage 144
- *79: Color Bias 146
- Optics Cavity 153
- 2.5 MISFEED TABLE 156
- SERVICE CALL CODE 160
- 3. SERVICE REMARKS 162
- 3.3 CHARGE CORONA 163
- 3.4 OPTICS 163
- 3.5 DEVELOPMENT UNIT 164
- 3.6 TONER SUPPLY 165
- 3.7 TRANSFER AND SEPARATION 165
- 3.8 CLEANING UNIT 165
- 3.9 FUSING UNIT 166
- 3.10 PAPER FEED 166
- 3.11 DOCUMENT FEEDER 166
- 3.12 SORTER 166
- 3.13 DUPLEX 167
- 3.14 OTHERS 167
- ± 0.1V by turning VR101 169
- ± 0.2V by turning VR102 169
- 5.1 PM TABLE 170
- 5.2 EXPLANATION OF REGULAR PM 174
- SECTION 5 176
- REPLACEMENT AND ADJUSTMENT 176
- 1. EXTERIOR AND INNER COVERS 177
- 1.2 INNER COVER REMOVAL 180
- 2. OPTICS 181
- 2.2 1ST MIRROR REMOVAL 182
- 2.5 EXPOSURE LAMP REPLACEMENT 187
- 2.6 THERMOSWITCH REPLACEMENT 189
- 2.8 SCANNER MOTOR REPLACEMENT 197
- REPLACEMENT 200
- (HORIZONTAL DIRECTION) 201
- 3.1 TONER TANK REMOVAL 202
- 3.2 DEVELOPER REPLACEMENT 203
- 3.3 INLET SEAL REMOVAL 204
- 3.5 DOCTOR GAP ADJUSTMENT 206
- REPLACEMENT 210
- 4. CLEANING 212
- 4.4 BLADE SCRAPER REPLACEMENT 215
- 4.6 USED TONER COLLECTION 217
- 4.7 ENTRANCE SEAL REPLACEMENT 218
- 5. PAPER FEED 219
- ROLLER REPLACEMENT 221
- 6. AROUND DRUM 237
- 6.3 ERASE LAMP REPLACEMENT 239
- 6.8 DRUM REPLACEMENT 244
- 6.9 ID SENSOR REPLACEMENT 246
- 7. FUSING 255
- 7.2 FUSING LAMP REPLACEMENT 256
- 7.4 HOT ROLLER REPLACEMENT 259
- 8. OTHERS 264
- 8.2 OZONE FILTER REPLACEMENT 265
- 9. COPY QUALITY ADJUSTMENT 266
- 9.3 BIAS VOLTAGE ADJUSTMENT 269
- 9.4 TONER DENSITY ADJUSTMENT 270
- • Main board 272
- • AC drive board 272
- 9.11 FOCUS ADJUSTMENT 274
- 9.12 ERASE MARGIN ADJUSTMENT 275
- 9.13 REGISTRATION ADJUSTMENT 275
- SECTION 6 280
- TROUBLESHOOTING 280
- 1. COPY QUALITY 281
- 2. SERVICE CALL CONDITION 304
- Not Open 315
- Replace the sensor 315
- Replace the main board 315
- 3.1 SENSOR 333
- 3.3 FUSE 336
- SECTION 8 337
- DOCUMENT FEEDER 337
- 2. COMPONENT LAYOUT 339
- 4. OVERALL MACHINE CONTROL 341
- → Copier 342
- 5. BASIC OPERATION 343
- 6. POWER DISTRIBUTION 345
- 7. INTERFACE CIRCUIT 346
- 8. ORIGINAL FEED 347
- 8.2 ORIGINAL SEPARATION 348
- 8.4 ORIGINAL SIZE DETECTION 351
- 8.7 BELT DRIVE MOTOR CIRCUIT 355
- 8.8 FEED-OUT MOTOR CIRCUIT 356
- DF Main Board (PCB1) 357
- 9. LIFT MECHANISM 358
- Code: A048) 361
- 11.2 INSTALLATION PROCEDURE 362
- 13.1 FEED-IN UNIT 369
- 13.2 FEED-OUT UNIT 379
- 1 July 1991 383
- SECTION 9 384
- SORTER 384
- Switches 387
- Printed Circuit Boards 387
- 6. EXIT ROLLER DRIVE 390
- 6.2 ROLLER DRIVE CIRCUIT 391
- 7. BIN DRIVE 392
- 7.2 BIN DRIVE CIRCUIT 394
- 8. MISFEED DETECTION 395
- 9. INSTALLATION PROCEDURE 396
- 9.2 INSTALLATION PROCEDURE 397
- 12. BIN GUIDE LUBRICATION 402
- SECTION 10 403
- Solenoids 406
- MACHINE CONTROL 407
- 6. DRIVE MECHANISM 409
- 7. FIRST SIDE COPY 410
- 7.3 DUPLEX STACKING 412
- 8. SECOND SIDE COPY 413
- DETECTION TIMING 414
- 10. SERVICE CALL CONDITIONS 415
- 11. DUPLEX UNIT INSTALLATION 416
- 12.1 DUPLEX TRAY REMOVAL 422
- SENSOR REPLACEMENT 424
- 12.3 TURN SENSOR REPLACEMENT 425
- 12.4 FEED MOTOR REPLACEMENT 426
- 12.9 FEED ROLLER REPLACEMENT 431
- SECTION 11 433
- SERVICE MANUAL 433
- 2. OPERATION PANEL 436
- 3. FUNCTIONAL OPERATION 438
- 5. DRIVE LAYOUT 440
- Magnetic Clutches 444
- Counters 447
- 8. OVERALL MACHINE CONTROL 449
- 9.1 AC POWER DISTRIBUTION 452
- 9.2 DC POWER DISTRIBUTION 453
- TIMING 456
- (Machine Code: A318) 458
- 12.1 SPECIFICATIONS 458
- 12.2 COMPONENT LAYOUT 459
- 12.4 POWER DISTRIBUTION 461
- Main Frame 462
- Duplex Unit 462
- 14. INSTALLATION 463
- 14.2 INSTALLATION PROCEDURE 466
- 14.4 SORTER INSTALLATION 471
- 14.5 DUPLEX UNIT INSTALLATION 471
- REPLACEMENT 472
- Copier Electrical Components 477
- Main Board 479
- Interface Board 479
- Copier Connectors 482
- CS110 (A490) 485
- PARTS CATALOG 486
- INTRODUCTION 486
- INDEX to PARTS CATALOG 486
- 1. EXTERIOR (A490) 487
- December 1, '90 487
- 2. TRANSPORT (A490) 489
- 3. SORTER MAIN BOARD (A490) 491
- 4. SORTER MAIN HARNESS (A490) 493
- 5. DECAL AND DOCUMENT (A490) 495
- PARTS INDEX 497
- DF57 (A318) 501
- 2. FEED IN SECTION (A318) 506
- 4. MAIN BOARD (A318) 512
- 5. INDICATION BOARD (A318) 515
- 6. MAIN HARNESS (A318) 517
- 7. INTERFACE HARNESS (A318) 519
- FACTORY SETTING 529
- SERIAL No 529
- P/N A0486684 529
- ± 0.1 using 530
- ± 0.2 using 530
- Data Table 532
- SP MODE OVERVIEW 534
- USER CODE 538
- AD120 (A491) 539
- 1. DUPLEX UNIT I (A491) 541
- 2. DUPLEX UNIT II (A491) 544
- 3. DUPLEX MAIN BOARD (A491) 546
- 4. DUPLEX HARNESS (A491) 548
- 5. SENSOR HARNESS (A491) 550
- 6. DECAL AND DOCUMENT (A491) 552
- POWER SUPPLY UNIT (A494) 559
- 1. POWER SUPPLY UNIT (A494) 561
- 2. INTERFACE BOARD (A494) 563
- 3. DC DRIVE BOARD (A494) 565
- TABLE OF CONTENTS 572
- INSTALLATION 575
- SERVICE TABLES 576
- TROUBLESHOOTING 580
- COPIER ELECTRICAL DATA 581
- WATER PROOF SHEETS 584
- FT4421 SERVICE MANUAL 585
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