Ricoh AP4510 Service Manual Page 258
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- Table of contents
- TROUBLESHOOTING
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IMAGE FUSING AND PAPER EXIT
G065 6-54 SM
6.13.7 FUSING TEMPERATURE CONTROL
There are two fusing lamps: the first
fusing lamp (center: 650 W) [A]
heats the center of the hot roller,
and the second fusing lamp (ends:
550 W) [B] heats both ends of the
hot roller. This arrangement
ensures even heat on all surfaces
of the roller.
In order to control the temperature
of the roller, two high response
thermistors are attached to the unit,
one near the center [C] and one at
the end [D] of the hot roller.
Temperature Control
There are two types of temperature control: On/off control (Default), and Phase
control.
Either mode can be selected with SP1104 (Fusing Temperature Control).
After the machine is powered on, the CPU checks the ac frequency for 500 ms, in
case phase control is selected later for the temperature control, and then switches
on the fusing lamp.
As soon as both the center and end thermistors detect the print ready temperature
(also known as the “re-load” temperature) , the machine can operate. The “reload”
temperature is 30°C below the fusing temperature (this depends on SP1105-05,
06). As soon as the thermistors detect the fusing temperature, the CPU switches
the lamps off but frequently switches on/off again in order to maintain the fusing
temperature.
G065D602.WMF
Center
End
Center
End
185°C
180°C
Main SW ON Re-load
50
200
150
100
°C
155
Fusing Temp.
G065D519.WMF
[A]
[B]
[D]
[C]
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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