Ricoh AP4510 Service Manual Page 214
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- Table of contents
- TROUBLESHOOTING
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LASER EXPOSURE
G065 6-10 SM
6.4 LASER EXPOSURE
6.4.1 OVERVIEW
1. LD unit
2. Cylindrical lens
3. Polygonal mirror
4. Shield glass
5. Mirror
6. Laser synchronization detector
7. BTL (Barrel Toroidal Lens)
8. F-theta mirror
9. Toner shield glass
This machine uses two laser diodes to produce electrostatic images on an OPC
drum. The laser diode unit converts image data from the BICU board into laser
pulses, and the optical components direct these pulses to the drum. To produce a
high quality image, these are 256 gradations for the laser power.
The output path from the laser diode to the drum is shown above. The LD unit
outputs two laser beams to the polygon mirror through the cylindrical lens and the
shield glass.
Each surface of the polygon mirror reflects two full main scan lines. The laser
beams go to the F-theta mirror, mirror, and BTL (barrel toroidal lens). Then these
laser beams go to the drum through the toner shield glass. The laser
synchronization detector determines the main scan starting position.
NOTE: The front door and upper right door (transfer door) are equipped with safety
switches that automatically shut down the laser unit when either door is
opened.
G065D541.WMF
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CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA
- SERVICE MANUAL 1
- CÓPIA NÃO CONTROLADA 10
- DOCUMENTATION HISTORY 11
- TABLE OF CONTENTS 13
- REPLACEMENT AND ADJUSTMENT 14
- SM iii G065 15
- TOUBLESHOOTING 16
- DETAILED DESCRIPTIONS 17
- G065 vi SM 18
- BRIDGE UNIT B397 19
- SPECIFICATIONS 19
- IMPORTANT SAFETY NOTICES 21
- LASER SAFETY 22
- INSTALLATION 27
- 1. INSTALLATION 29
- INSTALLATION REQUIREMENTS 30
- 1.2 MACHINE INSTALLATION 31
- 1.4 SYMBOLS USED IN TEXT 31
- 1.5 LCT INSTALLATION (A683) 32
- 1.1.2 INSTALLATION PROCEDURE 33
- LCT INSTALLATION (A683) 34
- 1.6.1 ACCESSORY CHECK 35
- SM 1-9 G065 37
- Installation 37
- 1.7.1 ACCESSORY CHECK 38
- G065 1-12 SM 40
- SM 1-13 G065 41
- 1.8.1 ACCESSORY CHECK 42
- G065 1-16 SM 44
- SM 1-17 G065 45
- G065 1-18 SM 46
- 1.9.1 ACCESSORY CHECK 47
- SM 1-21 G065 49
- G065 1-22 SM 50
- 1.10.1 ACCESSORY CHECK 51
- 1.1.3 INSTALLATION PROCEDURE 52
- MAILBOX INSTALLATION (G909) 53
- 1.11.1 ACCESSORY CHECK 55
- 1.11.2 INSTALLATION PROCEDURE 56
- SM 1-29 G065 57
- G065 1-30 SM 58
- SM 1-31 G065 59
- G065 1-32 SM 60
- PREVENTIVE MAINTANENCE 61
- 2.1 PM TABLES 63
- 2.1.2 PM TABLES FOR OPTIONS 65
- 3.1 GENERAL CAUTIONS 69
- 3.2.1 SPECIAL TOOLS 70
- 3.2.2 LUBRICANTS 70
- 3.2.3 SYMBOLS USED IN TEXT 70
- 3.3 FRONT DOOR 71
- 3.4 DUPLEX UNIT 71
- 3.5 UPPER RIGHT COVER 72
- 3.6 BY-PASS TRAY UNIT 73
- 3.7 REAR COVERS 74
- 3.8 LEFT COVERS 75
- 3.1.2 OPERATION PANEL 76
- 3.1.3 PAPER OUTPUT TRAY 77
- 3.9 LASER UNIT 78
- 3.1.2 LASER UNIT 79
- 3.1.3 POLYGON MIRROR MOTOR 80
- 3.1.5 LD UNIT 81
- Laser Beam Pitch Adjustment 82
- 3.10 PCDU 83
- 3.10.2 DRUM 84
- 3.10.3 PICK-OFF PAWLS 85
- G065 3-18 SM 86
- 3.10.5 DRUM CLEANING BLADE 87
- 3.10.6 ID SENSOR 88
- 3.11 DEVELOPMENT 89
- 3.1.2 DEVELOPMENT FILTER 90
- 3.1.3 DEVELOPMENT ROLLER 91
- 3.1.4 DEVELOPER 92
- 3.1.5 TD SENSOR 94
- 3.12 TRANSFER UNIT 95
- 3.12.2 TRANSFER BELT 96
- Transfer Belt Cleaning Blade 97
- Toner Overflow Sensor 97
- R: Red, P: Purple, B: Blue 98
- 3.13 PAPER FEED 99
- 3.13.2 LOWER RIGHT COVER 100
- CLUTCHES 101
- PAPER FEED 102
- 3.13.7 REGISTRATION SENSOR 105
- 3.1.8 TRAY LIFT MOTOR 107
- 3.1.9 FEED/DEVELOPMENT MOTOR 108
- 3.14 FUSING 109
- 3.1.2 FUSING UNIT EXIT GUIDE 110
- 3.1.3 HOT ROLLER STRIPPERS 110
- 3.1.4 FUSING LAMPS 111
- Right Side 112
- SM 3-45 G065 113
- Replacement 113
- Adjustment 113
- G065 3-46 SM 114
- SM 3-47 G065 115
- 3.15 BY-PASS TRAY 116
- BY-PASS TRAY 117
- 3.1.6 BY-PASS TABLE REMOVAL 121
- 3.16 DUPLEX UNIT 123
- DUPLEX UNIT 124
- 3.17 DRIVE AREA 126
- 3.1.2 MAIN MOTOR 127
- 3.1.3 FUSING/EXIT MOTOR 128
- 3.1.4 FUSING/EXIT CLUTCH 129
- 3.1.5 TONER SUPPLY MOTOR 130
- 3.18 PRINTED CIRCUIT BOARDS 131
- 3.1.2 I/O BOARD 132
- 3.1.3 BICU BOARD 133
- 3.1.4 PSU 133
- To Format the HDD 134
- 3.20 PRINTING ADJUSTMENTS 135
- G065 3-68 SM 136
- TROUBLESHOOTING 137
- 4. TROUBLESHOOTING 139
- 4.1.2 SC CODE DESCRIPTIONS 140
- XPOSURE 140
- SERVICE CALL CONDITIONS 141
- EVELOPMENT 142
- RANSFER 142
- OMMUNICATION AND 146
- ONTROLLER 150
- 4.2.1 SENSORS 153
- 4.2.2 SWITCHES 154
- 4.3 BLOWN FUSE CONDITIONS 155
- 4.4 LEDS 155
- 4.5 TEST POINTS 155
- SERVICE TABLES 157
- 5. SERVICE TABLES 159
- 5.2.2 BIT SWITCH PROGRAMMING 160
- PRINTER ENGINE SERVICE MODE 162
- Leaving the SP Mode 163
- 1. Feed (SP1000-00) 164
- 2. Drum (SP2000-00) 168
- 3. Process (SP3000-00) 178
- 4. HDD (SP4000-00) 179
- 5. Mode (SP5000-00) 179
- 6. Peripherals (SP6000-00) 183
- 7. Data Log (SP7000-00) 184
- 5.1.2 TEST PATTERN PRINTING 187
- 5.1.3 INPUT CHECK 189
- 5.1.4 OUTPUT CHECK 193
- SP5804 Output Check Table 194
- 5.4 SOFTWARE DOWNLOAD 197
- SOFTWARE DOWNLOAD 198
- 5.5 SELF-DIAGNOSTIC MODE 199
- SELF-DIAGNOSTIC MODE 200
- 5.6 DIP SWITCHES 201
- 6.1 OVERVIEW 205
- Paper Path 206
- 6.1.2 DRIVE LAYOUT 207
- 6.2 BOARD STRUCTURE 208
- BOARD STRUCTURE 209
- 6.2.2 CONTROLLER 210
- 6.3 PRINTING PROCESS OVERVIEW 212
- Image Transfer 213
- Separation 213
- ID Sensor 213
- Cleaning 213
- Quenching 213
- 6.4 LASER EXPOSURE 214
- LASER EXPOSURE 215
- 6.4.3 DUAL BEAM WRITING 216
- 6.4.5 LD SAFETY SWITCHES 218
- 6.5.1 OVERVIEW 219
- 6.5.3 DRUM PAWLS 220
- 6.5.4 DRUM TONER SEALS 220
- 6.5.2 DRIVE MECHANISM 220
- 6.6 DRUM CHARGE 221
- DRUM CHARGE 222
- 6.7 DEVELOPMENT 226
- DEVELOPMENT 227
- 6.1.4 DEVELOPMENT BIAS 228
- 6.1.5 TONER SUPPLY 229
- Toner Supply Mechanism 230
- Toner Density Control 230
- Sensor Control Mode 231
- Image Pixel Count Mode 231
- Standard Method 232
- 6.1.7 TONER END RECOVERY 233
- 6.8.1 DRUM CLEANING 234
- 6.8.2 TONER RECYCLING 234
- 6.9 PAPER FEED 235
- 6.9.2 PAPER FEED DRIVE 236
- 6.9.4 PAPER LIFT 237
- 6.9.5 PAPER END DETECTION 238
- 6.9.6 PAPER REGISTRATION 238
- 6.9.7 PAPER SIZE DETECTION 239
- 6.1.8 PAPER HEIGHT DETECTION 240
- 6.10 BY-PASS TRAY 241
- 6.11 DUPLEX UNIT 244
- 6.11.2 DUPLEX DRIVE LAYOUT 245
- Inversion and Exit 247
- 6.12.1 OVERVIEW 248
- 6.12.2 BELT DRIVE MECHANISM 249
- MECHANISM 250
- 6.12.5 TRANSFER BELT CHARGE 251
- G065 6-48 SM 252
- SM 6-49 G065 253
- Detailed 253
- Descriptions 253
- G065 6-50 SM 254
- 6.13.1 OVERVIEW 255
- 6.13.2 FUSING DRIVE 256
- 6.13.5 PRESSURE ROLLER 257
- 6.13.6 CLEANING MECHANISM 257
- Temperature Control 258
- 6.13.8 OVERHEAT PROTECTION 259
- 6.14 ENERGY SAVER MODE 260
- BRIDGE UNIT 261
- 1.1 SPECIFICATIONS 263
- MECHANICAL COMPONENT LAYOUT 264
- ELECTRICAL COMPONENT LAYOUT 265
- 1.5 DRIVE LAYOUT 266
- 2. DETAILED DESCRIPTION 267
- 3.1 EXIT SENSOR REPLACEMENT 268
- 2. SUPPORTED PAPER SIZES 272
- 3. SOFTWARE ACCESSORIES 273
- 4. MACHINE CONFIGURATION 274
- 4.2 INSTALLABLE OPTION TABLE 275
- 5. OPTIONS 276
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