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Ricoh G-P3 - By-Pass Feed Roller, Friction Pad
413 pages
Manual
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By-Pass Feed Roller, Friction Pad
1.
By-pass tray cover [A]
2.
By-pass tray [B] (
x 2,
x 1) and the harness cover [C]
3.
By-pass feed shaft cover [D]
4.
Move the holding roller left [E]
5.
By-pass feed roller [F]
3. Replacement and Adjustment
62
3
62
64
Table of Contents
Main Page
Safety Notices
2
Important Safety Notices
2
Laser Safety
3
Symbols, Abbreviations, and Trademarks
4
Symbols and Abbreviations
4
Trademarks
4
Table of Contents
5
1 Installation Procedure
12
Installation Requirements
12
Environment
12
Machine Level
13
Machine Space Requirements
13
Power Requirements
13
Optional Unit Combinations
15
Machine Options
15
Controller Options
15
Printer Installation
16
Installation Procedure
16
Loading Paper
25
Meter Click Charge
29
Moving the Machine
31
Transporting the Machine
31
Options Installation
32
Paper Feed Unit
32
Tray Heater
32
Controller Options
34
Overview
34
SD Card Appli Move
35
2 Preventive Maintenance
38
User Replaceable Items
38
Service Maintenance
39
Recommended Cleaning Procedure
39
3 Replacement and Adjustment
40
Before You Start
40
Special Tools and Lubricants
41
Tools
41
Electrical Components
42
Electrical Board Unit
42
IOB (Input/Output Board)
45
Controller Board
45
Installing the New NVRAM
47
PSU (Power Supply Unit) Board
48
High Voltage Power Supply Board 1
48
EGB (Engine Board) and High Voltage Power Supply Board 2
49
LCD Panel
50
NVRAM Replacement Procedure
50
Laser Optics
53
Caution Decal Locations
53
LD Unit
53
Ldb
57
Polygon Mirror Motor
57
Laser Synchronizing Detector Boards
58
LDU Shutter Motor Unit and Sensor
59
Paper Feed
61
Paper Feed Roller
61
Paper Friction Pad
62
By-Pass Paper Size Sensor
62
By-Pass Feed Roller, Friction Pad
63
Registration Sensor
65
Paper Volume Sensor, End Sensor and Paper Width Sensor
65
Paper Size Sensor and Temperature/ Humidity Sensor
68
Paper Feed Motor
68
Paper Registration Clutch, Paper Feed Clutch and By-Pass Clutch
69
Development
70
Color Development Motor, Color OPC Motor and Black Opc/Development Motor
70
Development Clutch
71
Transfer Belt Contact Motor
72
Toner Supply Motor
73
Transfer Roller Contact Motor
73
ID Sensors
75
Drive
76
Drive Unit
76
Duplex
78
Duplex Jam Sensor
78
Inverter Sensor
79
Duplex Motor and Inverter Motor
79
Fusing
81
Fusing Unit
81
Thermistor and Thermostat
81
Fusing Lamp
84
Fusing Exit Sensor and Paper Exit Sensor
85
Fusing Registration Sensor
85
Fan Direction
86
Adjustments
87
Gamma Adjustment
87
4 Troubleshooting
92
Process Control Results
92
Service Call Conditions
94
Summary
94
SC Code Descriptions
94
Troubleshooting Guide
125
Blank Print
125
All-Black Print
125
Missing CMY Color
126
Light Print
126
Repeated Spots or Lines on Prints
126
Dark Vertical Line on Prints
127
White Horizontal Lines or Bands
128
Missing Parts of Images
128
Dirty Background
128
Partial CMY Color Dots
129
Dark Irregular Streaks on Prints
129
CMY Color Irregular Streaks
129
Ghosting
129
Unfused or Partially Fused Prints
129
Image Skew
130
Background Stain
130
No Printing on Paper Edge
131
Image Not Centered When It Should be
131
Electrical Component Defects
132
Sensors
132
Blown Fuse Conditions
136
Power Supply Unit
136
Iob
136
Leds
137
5 Service Tables
138
Service Program Mode
138
Service Mode Operation
138
Exiting Service Mode
139
Remarks
140
Bit Switch Programming
142
Service Mode Table
143
Controller Service Mode
143
Engine Service Mode
148
Input Check Table
320
Output Check Table
324
Firmware Update
327
Type of Firmware
327
Before You Begin
327
Updating Firmware
328
NVRAM Data Upload/Download
331
Address Book Upload/Download
333
Handling Firmware Update Errors
334
Controller Self-Diagnostics
336
Overview
336
Using the Debug Log
338
Retrieving the Debug Log from the HDD
341
DIP Switches
343
Overview
344
Paper Path
345
Drive Layout
346
Board Structure
347
Printing Process
349
Process Control
351
Toner Supply Control
354
Toner Near End/Toner End Detection
356
Developer Initialization
357
Paper Feed
358
Paper Feed Drive
359
Paper Tray
360
By-Pass Tray Feed and Size Detection
363
Duplex
364
Laser Exposure
368
Optical Path
369
Laser Synchronizing Detector
370
LD Safety Switch
371
Automatic Line Position Adjustment
372
Photoconductor Unit
377
Drive and Drive Gear Position Sensor
378
Drum Charge and Quenching
380
Drum Cleaning
381
Waste Toner Collection
382
Waste Toner Bottle Full Detection and Set Detection
383
PCU Detection (Development Unit Detection)
384
Development
386
Drive
387
Developer Mixing
388
Toner Supply Mechanism
389
Image Transfer
390
Transfer Unit Detection and New Unit Detection
391
Drive and Transfer Belt Roller Voltage
392
Transfer Roller Unit
394
Fusing
397
Fusing Temperature Control
398
Overheat Protection
400
Drive
401
Controller
402
7 Specifications
404
Supported Paper Sizes
407
Software Accessories
408
Machine Configuration
409
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