Canon NP7161 User Manual Page 60
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- Table of contents
- TROUBLESHOOTING
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COPYRIGHT
©
1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 3 EXPOSURE SYSTEM
2. Motor Control Circuit
The lens motor (M3) and the mirror motor (M4) are 4-phase stepping motors, and are
controlled by the motor drive power supply signal (COM) and four drive pulse signals (A, B, A*,
B*) generated by the DC controller PCB.
The direction of rotation of the motor is switched by changing the timing at which the four
drive pulse signals (A, B, A*, B*) are generated.
The motor drive power supply signal (COM) is used to supply +24 V when rotating each
motor. It is used to provide +5 V when the motors are at rest, thereby ensuring that the lens and
the No. 4/No. 5 mirror unit remain still against vibration.
-3
-5
-4
-2
-1
-3
-1
-2
-4
-5
J101
-A3
-A1
-A2
-A4
-A5
Lens motor
LNS
_
A
LNS
_
COM
LNS
_
A*
LNS
_
B
LNS
_
B*
J38
M3
-3
-5
-4
-2
-1
-3
-1
-2
-4
-5
J103
-A7
-A5
-A6
-A8
-A9
Mirror motor
MMR
_
A
MMR
_
COM
MMR
_
A*
MMR
_
B
MMR
_
B*
J39
M4
Lens
motor
drive
circuit
DC controller PCB
+5V
+24V
Mirror
motor
drive
circuit
IC119
(CPU)
+5V
+24V
Figure 3-202
- FY8-13FB-000 1
- IMPORTANT 2
- COPYRIGHT © 1998 CANON INC 2
- Printed in Japan 2
- Imprimé au Japon 2
- INTRODUCTION 5
- CONTENTS 9
- CHAPTER 3 EXPOSURE SYSTEM 10
- CHAPTER 6 FIXING SYSTEM 12
- CHAPTER 7 12
- CHAPTER 8 INSTALLATION 13
- CHAPTER 10 TROUBLESHOOTING 13
- APPENDIX 15
- CHAPTER 1 17
- GENERAL DESCRIPTION 17
- I. FEATURES 19
- II. SPECIFICATIONS 20
- 4. Others 23
- III. NAMES OF PARTS 26
- B. Cross Section 27
- IV. OPERATING THE MACHINE 28
- Table 1-402 29
- B. User Mode 30
- VII.IMAGE FORMATION 34
- CHAPTER 2 37
- BASIC OPERATION 37
- I. BASIC MECHANISMS 39
- CHAPTER 2 BASIC OPERATION 40
- Figure 2-102 41
- Figure 2-103 42
- Table 2-101 43
- Figure 2-104 44
- Table 2-102 45
- Figure 2-106 47
- Figure 2-107 48
- Figure 2-108 49
- Figure 2-109 50
- Figure 2-110 51
- Figure 2-111 52
- Figure 2-112 53
- Figure 2-113 54
- CHAPTER 3 55
- EXPOSURE SYSTEM 55
- Figure 3-102 58
- II. LENS DRIVE SYSTEM 59
- CHAPTER 3 EXPOSURE SYSTEM 60
- III. SCANNER DRIVE SYSTEM 62
- IV. OTHERS 66
- V. DISASSEMBLY/ASSEMBLY 67
- A. Scanner Drive Assembly 68
- [4] [5][6] 70
- B. Lens Drive Assembly 74
- CHAPTER 4 77
- IMAGE FORMATION SYSTEM 77
- I. OUTLINE OF THE PROCESSES 79
- Figure 4-102 80
- Pulse duty (%) = t / T x 100 82
- Table 4-102 89
- ASSEMBLY 92
- Sequence 94
- Toner sensor (TS1) 94
- Toner absent 94
- T1 T2 T1 T2 T1 94
- F5.0F7.5 100
- III. DISASSEMBLY/ASSEMBLY 101
- A. Scanning Lamp Assembly 102
- COPYRIGHT 103
- B. Exposure Assembly 104
- C. Drum Unit 106
- Assembly 108
- D. Primary Charging 108
- E. Transfer Charging 109
- F. Charging Wire 110
- (correct) (wrong) 113
- Height adjusting 114
- G. Developing Assembly 115
- CHAPTER 5 119
- PICK-UP/FEEDING SYSTEM 119
- I. OUTLINE OF OPERATION 121
- II. PICK-UP FROM THE CASSETTE 122
- • A4, 2 Copies 123
- Figure 5-202 123
- Rear guide plate 124
- Lifter stopper 124
- Paper detection lever 124
- Auxiliary pressure spring 125
- Auxiliary pressure lever 125
- Cassette size switch PCB 127
- A. Pick-Up Operation 128
- Multifeeder paper width 129
- Figure 5-303 130
- V. DETECTING JAMS 132
- 1. Registration Delay Jam 133
- Figure 5-502 133
- Figure 5-503 133
- 3. Delivery Delay Jam 134
- Figure 5-504 134
- 4. Delivery Stationary Jam 134
- Figure 5-505 134
- VI. DISASSEMBLY/ASSEMBLY 135
- A. Pick-Up Assembly 136
- B. Multifeeder Assembly 140
- C. Registration Roller 143
- D. Cassette Assembly 144
- Figure 5-627 145
- CHAPTER 6 147
- FIXING SYSTEM 147
- CHAPTER 6 FIXING SYSTEM 150
- • 182 mm > Paper Width 151
- Table 6-104 151
- Figure 6-102 151
- Figure 6-103 152
- C. Error Detection Circuit 153
- II. DISASSEMBLY/ASSEMBLY 155
- Locking arm 156
- [13][12] 159
- [10][11] 159
- B. Delivery Assembly 164
- [2] [1] [3] [1] [2] 165
- DC controller PCB 170
- II. POWER SUPPLY 172
- B. Power Supply Circuitry 173
- A. External Covers 177
- B. Control Panel 181
- C. Copyboard Glass 182
- E. Counter Assembly 186
- F. Main Motor Assembly 186
- G. DC Controller PCB 187
- H. Removing the Power 188
- Supply PCB 188
- I. Removing the High-Voltage 188
- Power Supply PCB 188
- J. Lamp Regulator PCB 189
- CHAPTER 8 191
- INSTALLATION 191
- I. SELECTING THE SITE 193
- A. Unpacking 194
- Cushioning material 195
- Thumb screw 196
- Toner supply 196
- CHAPTER 8 INSTALLATION 197
- Static eliminator 198
- Copy tray 201
- F. Supplying Toner 202
- III. RELOCATING THE MACHINE 204
- IV. INSTALLING THE 205
- CONTROL CARD IV N 205
- 12345678 211
- VI. INSTALLING THE 215
- ACCESSORY 215
- VII.INSTALLING THE 217
- ACCESSORY HEATER 217
- B. Mounting the Cassette/ 218
- Drum Heater 218
- CHAPTER 9 221
- MAINTENANCE AND SERVICING 221
- A. Copier 223
- II. CONSUMABLES AND DURABLES 224
- IV. SCHEDULED SERVICING TABLE 227
- CHAPTER 10 229
- TROUBLESHOOTING 229
- Non-AE, Copy Density at 5 233
- II. STANDARDS AND ADJUSTMENTS 235
- B. Exposure System 237
- C. Image Formation System 240
- D. Pick-Up/Feeding System 244
- Figure 10-221 245
- E. Fixing System 246
- F. Electrical System 248
- III. IMAGE FAULTS 255
- B. Image Fault Samples 258
- 21.The copy is blank 271
- 22.The copy is solid black 271
- 3. E002/E003 274
- 14.E710/E711 279
- 20.AC power is absent 282
- 21.DC power supply is absent 283
- 22.The scanner fails to move 284
- 23.The lens fails to move 285
- 24.The mirror fails to move 285
- 28.Pick-up fails. (cassette) 288
- A. Copy Jams 296
- 1. Pick-Up/Feeding Assembly 297
- 2. Fixing/Delivery Assembly 298
- B. Faulty Feeding 299
- ELECTRICAL PARTS 300
- Table 10-601 301
- Figure 10-602 302
- Table 10-602 303
- C. Heaters, Lamps, and Others 304
- Table 10-603 305
- Figure 10-604 306
- Table 10-604 306
- Table 10-606 308
- Table 10-607 308
- Table 10-605 308
- Table 10-608 309
- Table 10-609 309
- 2. Power Supply PCB 310
- Figure 10-606 310
- Figure 10-607 310
- 3. Lamp Regulator PCB 310
- Figure 10-608 311
- VII. SERVICE MODE 312
- D. Display Mode [1] 314
- Overstacking 317
- DescriptionCode 317
- E. I/O Display Mode [2] 318
- Figure 10-702 319
- Table 10-709a 319
- Table 10-709b 320
- Table 10-709c 321
- F. Adjust Mode [3] 322
- G. Function Mode [4] 324
- H. Option Mode [5] 325
- Table 10-710 326
- I. Counter Mode [6] 327
- J. Application Mode [7] 328
- C. Sorter 334
- D. Cassette Feeding Module 334
- A. GENERAL TIMING CHART 337
- B. SIGNALS AND ABBREVIATIONS 338
- 2. Abbreviations 339
- C. GENERAL CIRCUIT DIAGRAM 341
- D. SPECIAL TOOLS LIST 343
- E. SOLVENTS AND OILS 344
- 70% reprocessed paper 346
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