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Ricoh
All in One Printer
G147
Ricoh G147 User Manual
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G147 3-42
SM
3.11 FUSING UNIT

Allow time for the unit to cool
before doing the following procedur
e.
3.11.1
FUSING UNIT REMOVAL
1.
Open the front door
, duplex unit, and right door
.
2.
Remove set screw
[A] (
x
1)
3.
Fusing unit release lever [B]
4.
Slide out the fusing unit [C]

The large kn
ob [D] is provided to make it
easier to turn the hot roller in order to
remove jams.
117
119
Table of Contents
Table of Contents
13
Default Chapter
21
Conventions Used in this Manual
21
Read this First
21
Safety Information
22
Safety Instructions
22
During Maintenance
23
Lithium Batteries
24
Caution Labels
27
Laser Safety
27
1 Installation
31
Cautions
33
Installation
33
Installation Requirements
34
Environment
34
Machine Level
34
Minimum Space Requirements
34
Power Requirements
35
Main Machine Installation
36
Installation Overview
36
Installation Flowchart
37
Lct (B543)
38
Accessory Check: Lct
38
Installation Procedure: Lct
38
Bridge Unit (B538)
41
Accessory Check: Bridge Unit
41
Installation Procedure: Bridge Unit
41
Two-Tray Finisher (G838)
45
Accessory Check: Two Tray Finisher
45
Installation Procedure: Two-Tray Finisher
45
Punch Unit (B377)
49
Accessory Check: Punch Unit
49
Installation Procedure: Punch Unit
49
Data Overwrite Security Unit (B735)
53
Before You Begin
53
Seal Check and Removal
53
Installation Procedure: Dos Unit
54
Controller Options
56
Boards and Slots
56
Installing Sd Cards
57
Merging Applications on One Sd Card
58
Installing Controller Options
60
2 Preventive Maintenance
67
Pm Tables
69
Pm Tables for the Printer
69
Pm Tables for Options
72
Lubrication
74
3 Replacement and Adjustment
75
Precautions
77
General Precautions
77
Laser Unit Precautions
77
Special Tools and Lubricants
78
Lubricants
78
Special Tools
78
Covers and Common Procedures
79
Duplex Unit
79
Front Door
79
Right Upper Cover
80
By-Pass Tray Unit
81
Rear Covers
81
Left Covers
82
Operation Panel
83
Paper Output Tray
84
Laser Unit
86
Caution Decal Locations
86
Laser Unit Removal
86
Polygon Mirror Motor
88
Laser Synchronization Detector
89
Ld Unit
89
Laser Beam Pitch Adjustment
90
Pcdu
92
Photoconductor Cleaning/Development Unit
92
Drum
93
Pick-Off Pawls
95
Charge Roller and Cleaning Roller
96
Drum Cleaning Blade
97
ID Sensor
98
Development
99
Development Unit
99
Development Filter
100
Development Roller
100
Developer
101
Td Sensor
103
Transfer Unit
104
Transfer Belt Unit
104
Transfer Belt
105
Transfer Belt Cleaning Blade and Toner Overflow Sensor
106
Paper Feed
107
Lower Right Cover
107
Pick-Up, Separation, and Feed Rollers
107
Relay/Upper Paper Feed and Lower Paper Feed Clutches
108
Upper Paper Feed Unit for Tray 1
109
Lower Paper Feed Unit for Tray 2
110
Paper End/Paper Height/Relay Sensors
111
Registration Sensor
111
Tray Lift Motor
114
Feed/Development Motor
115
Idle Roller Dust Blade
116
Registration Roller Dust Blade
116
Fusing Unit
118
Fusing Unit Removal
118
Fusing Unit Exit Guide
119
Hot Roller Strippers
119
Fusing Lamps
120
Thermistors and Thermostats
121
Hot Roller/Pressure Roller
122
By-Pass Tray
125
By-Pass Paper Feed and Pick-Up Roller Replacement
125
Covers
125
By-Pass Separation Roller
126
Paper End Sensor, Pick-Up Solenoid
127
Paper Size Sensor Board
128
By-Pass Table Removal
129
Paper Feed Clutch
130
Duplex Unit
131
Duplex Cover Removal
131
Duplex Entrance Sensor
131
Duplex Exit Sensor
132
Drive Mechanisms
133
Registration Clutch, Transfer Belt Contact Clutch
133
Main Motor
135
Fusing/Exit Motor
136
Toner Supply Motor
137
Boards
139
Nvram
139
Hvps
143
Iob
143
Bicu Board
144
Hdd and Controller Board
145
Psu
145
Parallelogram Image Adjustment
147
4 Troubleshooting
149
Service Call Conditions
151
Sc Code Descriptions
151
Troubleshooting
151
Electrical Component Defects
185
Sensors
185
Switches
186
Bicu Leds
187
Blown Fuse Conditions (Psu)
187
Controller Board Test Points
187
Detailed Descriptions
325
Specifications
392
Service Tables
189
Entering and Leaving the Service Program Mode
191
General Notes
191
Service Program Mode Operation
191
Printer Controller Service Mode
192
Printer Controller Bit Switch Settings
193
Printer Engine Service Mode
194
Leaving the Sp Mode
195
Service Program Mode Tables
196
Service Table Key
196
Service Tables
196
Test Pattern Printing
281
Printing the Test Pattern
282
Sp2902-03 Printing Test Patterns
283
Input Check
285
Output Check
292
Memory Clear: Sp5801
296
Smc Report
298
Updating the Firmware
300
How to Update a Module
301
Printing the Self-Diagnosis Report
303
Uploading/Downloading Nvram Data
305
Downloading Nvram Data
306
Self-Diagnostic Mode
308
Self-Diagnostic Test Flow
309
Dip Switches
311
Using Debug Log
312
Retrieving the Debug Log from the Hdd
318
Detailed Descriptions
323
Paper Path
325
Drive Layout
326
Board Layout
327
Controller Block Diagram
329
Printing Process Overview
332
Laser Exposure
334
Auto Power Control (Apc)
335
Laser Beam Pitch Change Mechanism
336
Ld Safety Switches
337
Photoconductor Unit (Pcdu)
338
Drum Drive Mechanism
339
Drum Toner Seals
340
Drum Charge
343
Charge Roller Voltage Correction
344
ID Sensor Pattern Production Timing
345
Drum Charge Roller Cleaning
347
Development
348
Drive Mechanism
349
Development Bias
350
Toner Supply
351
Toner Density Control
352
Toner Supply Mechanism
352
Image Pixel Count Mode
353
Sensor Control Mode
353
Toner Near End/End Detection
354
Toner Supply with Abnormal Sensors
355
Drum Cleaning and Toner Recycling
356
Toner Recycling
357
Paper Feed
358
Paper Feed Drive
359
Paper Lift
360
Paper End Detection
361
Paper Registration
362
Paper Height Detection
364
By-Pass Tray
365
By-Pass Tray Operation
366
By-Pass Paper Size Detection
367
Duplex Unit
368
Duplex Drive Layout
369
Duplex Unit Feed in and Exit Mechanism
370
Image Transfer and Paper Separation
372
Transfer Belt Drive Mechanism
373
Transfer Belt Unit Contact Mechanism
374
Transfer Belt Charge
376
Correction for Paper Width and Thickness
377
Transfer Belt Cleaning Mechanism
378
Image Fusing and Paper Exit
379
Fusing Drive
380
Fusing Entrance Guide Shift Mechanism
381
Exit Guide Plate and De-Curler Rollers
382
Cleaning Mechanism
383
Fusing Idling Temperature
384
Fusing Temperature Control
384
Overheat Protection
385
Energy Saver Mode
386
Specifications
389
Energy Save Mode
391
Supported Paper Sizes
392
Software Accessories
394
System Configuration
395
Installable Option Table
396
Option Specifications
397
Lcit Rt45 (B543)
398
Paper Feed Unit Pb3020 (G839)
399
Punch Unit Type 1045 B377
403
1 Replacement and Adjustment
405
Punch Position Adjustment
405
2 Details
406
Punch Drive Mechanism
406
Punch Waste Collection
408
Bridge Unit Type 2045 B538
411
1 Overall Machine Information
413
Specifications
413
Mechanical Component Layout
414
Electrical Component Description
415
Electrical Component Layout
415
Drive Layout
416
2 Detailed Description
417
Junction Gate Mechanism
417
Exit Sensor Replacement
418
Large Capacity Tray Rt45 B543
421
1 Overall Machine Information
423
Specifications
423
Mechanical Component Layout
424
Electrical Component Layout
425
Electrical Component Description
426
Drive Layout
427
2 Detailed Descriptions
428
Paper Feed Mechanism
428
TRAY LIFT and Paper HEIGHT DETECTION MECHANISM
429
Tray Lifting Conditions
429
Tray Lowering Conditions
429
Tray Unit Slide Mechanism
430
3 Service Tables
431
Dip Switches
431
Fuses
431
Switches
431
Test Points
431
3 Replacement and Adjustment
432
Cover Replacement
432
Front Cover
432
Rear Cover
432
Right Lower Cover
432
Tray Cover
432
Upper Cover
432
Paper Feed Roller
433
PAPER FEED, SEPARATION, and PICK-UP Rollers
433
Pick-Up Roller
433
Roller Replacement
433
Separation Roller
433
Paper End Sensor
434
Tray Lift and Paper End Sensor Replacement
434
Tray Lift Sensor
434
Relay Sensor Replacement
435
Side Fence Position Change
436
Finisher Sr3040 G838
439
1 Replacement and Adjustment
441
Covers
441
External Covers
441
Inner Cover
441
Positioning Roller
442
Tray 1 Exit Sensor
442
Entrance Sensor/Stapler Tray Entrance Sensor
443
Stapler Tray
443
Upper Stack Height Sensors/Tray 1 Upper Limit Switch
444
Exit Guide Plate Motor
445
Lift Motors
445
Lower Exit Sensor
447
Lower Stack Height Sensors
448
Tray 2 Shunt Position Sensor
448
Stapler Rotation Hp Sensor
449
Stapler Unit
449
Tray 1 Interior
450
Tray 1 Covers
450
Back Fence Lock Clutch
451
Tray 1 Shift Motor
451
Tray Shift Sensors and Tray Release Sensor
451
Finisher Main Board
452
Punch Hole Position Adjustment
452
2 Troubleshooting
453
Timing Charts
453
A4(S)/Lt(S) Shift Mode with Punch - Tray 1
454
A4(S)/Lt(S) Staple Mode with Punch
455
Jam Detection
456
3 Service Tables
457
Dip Switch Settings
457
Fuses
457
Test Points
457
4 Detailed Descriptions
458
General Layout
458
Drive Layout
459
Junction Gates
460
Tray Shift Mechanisms
461
Tray Shifting
461
Sm G838
461
Tray 1 (Upper Tray)
461
Tray 2 (Lower Tray)
462
Introduction
463
Normal and Sort/Stack Modes
463
Staple Mode
464
Tray 1 Release Mechanism
465
Tray 2
467
Pre-Stack Mechanism
468
Horizontal Paper Alignment
469
Jogger Unit Paper Positioning Mechanism
469
Vertical Paper Alignment
469
Side-To-Side Movement
470
Stapler Mechanism
470
Stapler Movement
470
Stapler Rotation
470
Stapler
471
Feed out and Transport
472
Punch Drive Mechanism
473
Punch Unit (Optional)
473
Punch Waste Collection
474
Paper Feed Unit Pb3020 G839
477
Cover Replacement
490
Right Cover
490
Rear Cover
490
Replacement and Adjustment
490
Roller Replacement
491
Paper Feed, Separation, and Pick-Up Rollers
491
Pick-Up Roller
491
Paper Feed Roller
491
Separation Roller
491
Tray Motor Replacement
492
PAPER FEED and RELAY Clutch REPLACEMENT
493
Paper FEED UNIT REPLACEMENT
494
Upper Paper Feed Unit
495
Lower Paper Feed Unit
495
Paper End, Tray Lift, and Relay Sensor Replacement
496
Paper End Sensor
496
Tray Lift Sensor
496
Relay Sensor
496
4
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Ricoh G147 Specifications
General
Brand
Ricoh
Model
G147
Category
All in One Printer
Language
English
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