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All in One Printer
A172
Ricoh A172 User Manual
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15.11
DF POSITION/APS START SENSOR REPLACEMENT
1. Turn off the main
switch and lift
up the DF.
2. Remove the sensor bracket [A]
(1 screw).
3.
Remove
the h
arness
clamp
[B] a
nd repla
ce th
e DF pos
ition
senso
r [C]
or
the APS s
tart sen
sor [D] (1 conn
ector ea
ch).
[A]
[B]
[D]
[C]
Dual Job Feeder
DF62 (A610)
SM
7-39
A172/A199
359
361
Table of Contents
Default Chapter
12
Table of Contents
12
Important Safety Notices
20
Overall Machine Information
26
Machine Configuration
28
Specifications
29
Functions: Basic Model Vs Edit Model
33
Newly-Added Operating Features
34
Image Overlay
35
Mechanical Component Layout
37
Drive Layout
39
Electrical Component Descriptions
41
Detailed Descriptions
48
Major Differences from the Dfc-Alpha (A109)
50
Process Control
54
Latent Image Control
54
Drum Potential Sensor Calibration
54
Gradation Pattern Detection
55
Toner Density Control
56
Cnt Correction
56
Forced Toner Consumption Mechanism
57
Forced Toner Supply Mechanism
57
Drum Unit
58
Drum Charge
58
Drum Charge Corona Wire/Grid Cleaning
59
Drive Mechanism
60
Drum Lubrication Mechanism
61
Image Processing
62
Ipu Section Block Diagram
62
Acs (Auto Color Selection)
63
Rgb Filter
66
Filtering
66
Auto Image Density Control (Full Color)
66
Color Correction
67
Image Modes
68
Background Density Control
69
Contrast
70
Auto Image Density Control (B/W, Twin Color, Single Color)
71
Acc (Auto Color Calibration)
72
Ymcbk FILTER
73
Development
74
Development Sleeve Cleaning
74
Toner Tank
75
Toner Agitation
75
Toner End Detection
76
Transfer Belt Unit
77
Transfer Belt Bias
77
Transfer Belt Lubrication
78
Transfer Roller Unit
79
Transfer Belt/Roller Heater Control
79
Transfer Roller Bias
80
Transfer Roller Lubrication
81
Paper Discharge
82
Fusing Unit
83
Roller Cleaning Mechanism
83
Fusing Temperature Control
84
Operation Panel
85
Operation Panel Control Block Diagram
85
Operation Control Board
86
Op-Port
87
Installation
88
Installation Requirements
90
Environment
90
Machine Level
90
Minimum Space Requirements
91
Power Requirements
92
Copier (A172/A199)
93
Accessory Check
93
Copier
93
Optional Holder (A702-18)
93
Copier Separation
94
Copier Installation Procedure
95
Paper Size Change
115
Optional Holder (A702-18)
118
Key Counter Installation
120
Upper and Lower Tray Heaters (Options)
121
Dual Job Feeder (A610)
122
Accessory Check
122
Installation Procedure
123
Sorter (A322)
126
Accessory Check
126
Installation Procedure
127
Film Projector (A718)
133
Accessory Check
133
Installation Procedure
134
Controller Interface Type-C (A583-05)
143
Accessory Check
143
Installation Procedure
144
Service Tables
150
Service Program Mode
152
Service Program Mode Operation
152
Service Program Access Procedure
152
To Exit SP Mode
152
To Return to the Index Menu
153
Change the Menu Screen
153
To Make a Copy While in SP Mode
153
To Input Settings
154
To Clear the Counters
154
Service Program Mode Table
155
1] Sp Adjustment
155
2] SP Test
169
3] SP Data Output
177
4] SP Special Feature
181
5] Jam/Sc Counter
193
6] Operation Counter
195
7] Counter Clear
203
8] Printer
205
10] Special Mode Program
209
Input Check Mode Table
211
Output Check Mode Table
214
Administrator Tools
218
Administrator Tools Access Procedure
218
Test Points/Dip Switches/Leds
219
Main Control Board
219
Ipu Board
219
DIP Switches
219
Leds
219
Preventive Maintenance Schedule
220
Pm Table
220
Replacement and Adjustment
228
Color Balance Adjustment
230
Auto Color Calibration (Acc)
230
Calibration Procedure
230
To Recall the Settings that Were in Use before the ACC
233
To Change the Value of the Γ Correction Data
234
Laser Unit
236
Warning
236
Drum Unit
237
Charge Corona Wire and Wire Cleaner Pad
237
Replacement
237
Drum Lubricant Bar Replacement
238
Wire Cleaner Motor Replacement
239
Installing a New Drum
240
Development Section
242
Developer Collection
242
Developer Installation
244
Transfer Belt Cleaning Unit
249
Belt Lubricant Bar Replacement
249
Belt Lubricant Bar Solenoid Replacement
250
Transfer Roller Unit
251
Roller Lubricant Bar Replacement
251
Fusing Unit
253
Pressure Roller Cleaning Roller Replacement
253
Fusing Pressure (Nip Band Width) Confirmation
254
Others
255
Optics Cooling Fan Filter Replacement
255
Operation Panel Control Board Replacement
256
Point Accuracy Adjustment
257
A172/A199 Fiery XJ System Printer Γ Adjustment Procedure
258
Procedure
258
To Change the Value of the Γ Correction Data
261
For Letter Mode
261
For Photo Mode
262
Troubleshooting
264
Service Call Conditions
266
Scanning
268
Printing
272
Development
273
Around the Drum
277
Transfer Belt / Roller
280
Paper Feed
282
Fusing
283
Communication
287
Optional Equipment
290
Others
292
ACC Control
293
Blown Fuse Conditions
294
Operation Panel Self-Diagnostic Modes
295
Starting the Operational Diagnostic Program
296
Self-Diagnostic Modes
298
Details about Operation Panel Self-Diagnosis
301
Main RAM Read/Write Test
301
System ROM Check Sum Test
303
Video RAM Read/Write Test
305
VGA Test
307
LCD Pattern Test
309
Touch Panel Test
311
Led/Conventional Key Test
313
8) CMOS RAM Test
315
Problems Detected at Tests and Suspected
317
Units
317
Dual Job Feeder Df62 (A610)
320
Specifications
322
Component Layout
324
Mechanical Component Layout
324
Electrical Component Layout
325
Electrical Component Description
326
Original Pick-Up Mechanism
328
Separation and Feed Mechanism
329
Friction Belt Drive Mechanism
330
Original Size Detection
331
Transport Mechanism
333
Basic Operation
333
Thin/Thick Original Modes
335
Original Feed-Out Mechanism
336
Transport Belt Leveling Mechanism
337
Lift Mechanism
338
Special Features
339
Preset Mode
339
Two-Sided Original Feed (Auto Reverse) Mode
340
Combine Two Originals Mode
341
Timing Charts with Original Misfeed Detection
344
A4 Sideways: One-Sided, Two Originals
344
Combine Two Originals Mode
345
A4 Sideways: Two-Sided, Two Originals
346
Service Tables
347
Dip Switches and Switch
347
Variable Resistors
348
Leds
348
Fuse
348
Replacements and Adjustments
349
Upper Cover Removal
349
Transport Belt Replacement
350
Feed Roller Replacement
352
Friction Belt Replacement
353
Original Set/Feed, Registration-1/-2, and Original Width-1/-2/-3 Sensor Replacement
354
Feed-Out Unit Removal
355
Feed-Out Motor Replacement
356
Inverter Solenoid Removal and Adjustment
357
Feed-Out Sensor Replacement
358
Inverter Roller Replacement
359
Df Position/Aps Start Sensor Replacement
360
Belt Drive Motor Replacement
361
Feed-In Unit Removal
362
Feed-In Motor Replacement
363
Friction Belt Motor Replacement
364
Feed-In Clutch Replacement
365
Stopper Solenoid Replacement
366
Vertical Registration Adjustment
367
One-Sided Thin Original Mode
367
Two-Sided Original Mode
369
Side-To-Side Registration Adjustment
371
Preventing the Rear Side of Originals from Becoming
372
Dirty
372
Sorter Cs250 (A322)
376
Specification
376
Major Differences from the Base Copier'ssorter (A511)
377
Film Projector Unit Spu 3 (A718)
380
Specification
380
Major Differences from the Base Copier'sfilm Projector (A718)
381
Parts Catalog
384
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Ricoh A172 Specifications
General
Brand
Ricoh
Model
A172
Category
All in One Printer
Language
English
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