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U-C1 B051
Ricoh U-C1 B051 User Manual
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26 July 2002
OVERVIEW
6-5
Detailed
Descriptions
6.1.4 ELECTRICAL
COMPONENTS
Scanner Unit
1. Anti-
condensatio
n
heater
2. Scanner
HP
sensor
3.
Platen cov
er sensor
4.
Origi
nal length sensor
1
5.
Origi
nal length sensor
2
6.
SBU (sensor
board unit)
7. Lamp
stabilizer
8. Ori
ginal
width
sensor
9. Operati
on
panel
10. Ex
posure
lamp
B051D109.
W
MF
1
2
3
4
5
6
7
8
9
10
264
266
Table of Contents
Default Chapter
2
Exterior Cover
2
Laser Safety
3
Table of Contents
5
1 Installation
20
Installation Requirements
20
Environment
20
Machine Level
20
Power Requirements
21
Space Requirements
21
Copier (B051/B052)
22
Power Sockets for Peripherals
22
Installation Flow Chart
23
Accessory Check
24
Installation Procedure
25
Paper Tray Unit (B456)
32
Accessory Check
32
Installation Procedure
32
Lct (B457)
36
Accessory Check
36
Installation Procedure
36
Auto Reverse Document Feeder (B386)
40
Accessory Check
40
Installation Procedure
40
Replacement and Adjustment
42
Interchange Unit (B481)
43
Accessory Check
43
Installation Procedure
44
1-Bin Tray Unit (B480)
45
Accesory Check
45
Tray
45
Installation Procedure
46
Shift Tray
49
Component Check
49
Installation Procedure
49
Rear Cover
50
By-Pass Feed Unit (B490)
52
Accessory Check
52
Installation Procedure
52
Duplex Unit (B509)
54
Accessory Check
54
Installation Procedure
55
Bridge Unit (B482)
57
Accessory Check
57
Installation Procedure
57
Sensors
57
1000-Sheet Finisher (B408)
60
Accessory Check
60
Installation Procedure
61
500-Sheet Finisher (B458)
64
Accessory Check
64
Installation Procedure
65
Platen Cover Installation
67
Memory
68
Key Counter Installation
70
Anti-Condensation Heater
72
Tray Heater
73
Tray Heater (Optional Paper Tray Unit)
73
Tray Heater (Optional Paper Tray Unit)
74
Tray Heater (Optional Lct)
76
2 Preventive Maintenance
78
Main Unit
78
Overview
78
Pm Table
79
Optional Unit Pm Table
82
3 Replacement and Adjustment
83
Special Tools
83
Filters
83
Scanner Unit
84
Exposure Glass
84
Aps Sensors
84
Lens Block Assembly
85
Exposure Lamp Stabilizer
87
Scanner Lamp
87
Left Cover
87
Scanner I/O Board
89
Scanner Motor
89
Front Scanner Wire
89
Motors
89
Rear Scanner Wire
92
Laser Unit
94
Caution Decal Location
94
Laser Unit
95
Front Cover
96
Adjusting for Image Skew
97
D-Phase Adjustment
98
Laser Beam Pitch Adjustment
99
Polygonal Mirror Motor and Lsd
100
Development Unit
101
Photoconductor Unit (Pcu)
102
Pcu Assembly
102
Waste Toner Bottles
103
Charge Corona Unit, Grid, Wire, and Cleaner
104
Charge Corona Wire Cleaner Motor
105
Image Transfer Belt Cleaning Unit
105
Opc Belt Cleaning Unit
105
Paper Transfer Unit
106
Transfer Roller
106
Vertical Transport Unit
106
Fusing/Paper Exit
107
Fusing Unit
107
Oil Supply Unit
107
Cleaning Roller and Fusing Sponge Roller
108
Oil Supply Pad
108
Oiling Roller and Oil Supply Roller
109
Fusing Lamps
110
Fusing Inner Unit
111
Pressure Roller Thermofuse
111
Fusing Belt Unit and Pressure Roller Unit
112
Hot Roller Strippers
112
Pressure Roller, Pressure Roller Gear, and Cleaning Roller
113
Pressure Roller Thermistor
114
Oil Absorbers
115
Paper Exit/Overflow Sensors
116
Paper Feed and Transport
118
Feed Roller and Friction Pad
118
Registration Sensor
119
Paper Feed Clutch
121
Paper Feed Sensor 1
122
Paper Near-End Sensors
122
Paper Feed Sensor 2
123
Paper End Sensor 1
124
Paper End Sensor 2
124
Electrical Components
125
Ex I/O Board
125
Exhaust Fan and I/O Board
125
Bicu Board and Controller Board
126
Hdd
127
High Voltage Supply Board
127
Power Supply Unit
128
Drive Units
129
C and M Development Units
129
Development Clutches
129
K and y Development Units
129
Development Motor
130
Main Motor
130
Fusing Unit Motor
131
Pcu Gear Box
131
Paper Feed Clutch 1
132
Paper Feed Motor
132
Paper Feed Clutch 2
133
Registration Clutch
133
Oil Pump
134
Copy Adjustment
135
Printing
135
Registration - Leading Edge/Side-To-Side
135
Blank Margin
136
Main Scan Magnification
136
Scanner Leading Edge and Side-To-Side Registration
137
Scanner Sub-Scan Magnification
137
Scanning
137
Main Scan Dot Position Correction
138
Ardf Image Adjustment
139
ARDF Side-To-Side and Leading Edge Registration
139
ARDF Skew Adjustment
140
Color Adjustment
141
Auto Color Calibration (Acc)
141
Copy Mode
142
Printer Gamma Correction
142
Printer Mode
146
Scanner White Level Adjustment
148
White Level Adjustment
148
White Level Check
148
Touch Screen Calibration
151
4 Troubleshooting
152
Service Call
152
Service Call Conditions
152
Sc Table
153
Lift Motors
157
Controller Board
160
Stapler Motor
162
Tray Motor
163
Self-Diagnostic Mode
169
Overview
169
Detailed Self-Diagnostics
170
Image Test Mode
171
Gavd Test
171
Ipu Test
171
Overview
171
SP4-904-1 Register Write/Read Check Result
171
SP4-904-2 Image Path Check Result
171
SP4-907-1: VPU Test Pattern: R
171
SP4-907-2: VPU Test Pattern: G
171
SP4-907-3: VPU Test Pattern: B
171
Vpu Test
171
Electrical Component Defects
172
Paper Feed
172
Sensors
172
Blown Fuse Conditions
174
Switches
174
Check Points for Image Problems at Regular
175
Intervals
175
5 Service Tables
176
Service Program Mode
176
Service Program Mode Operation
176
Quitting the SP Mode
176
Starting the SP Mode
176
SP Mode Touch Screen
177
Copy Window for Test Printing
178
Working on SP Mode Menus
178
Sp Mode Table
179
SP1-XXX: (Feed)
179
SP2-XXX: (Drum)
183
SP3-XXX: (Process)
196
SP4-XXX: (Scanner)
200
SP5-XXX: (Mode)
204
SP6-XXX: (Peripherals)
222
Pick-Up Solenoid
222
SP7-XXX: (Data Log)
225
SP9-XXX: (Etc.)
237
Test Pattern Printing (Sp5-955-1)
238
Input Check
239
Main Machine Input Check (SP5-803)
239
Table 1: Tray 1 and 2 Paper Size
242
ARDF Input Check (SP6-007)
243
Finisher Input Check (SP6-117)
244
Stack Height Sensor
244
Output Check
245
Main Machine Output Check (SP5-804)
245
Paper Feed
246
Transport Motor
247
ARDF Output Check (SP6-008)
248
Finisher Output Check (SP6-118)
248
Tray Lift
248
Smc Data Lists (Sp5-990)
249
Original Jam History Display
249
Details on the most Recent Jams
249
Total Count
249
Copy Jam History Display
250
Details on the most Recent Jams
250
Total Count
250
Memory All Clear (Sp5-801)
251
Using a Flash Memory Card
251
Without Using a Flash Memory Card
252
Aps Output Display (Sp4-301)
253
Program Download
254
Controller Board
254
Firmware
254
Nvram Data Upload/Download
255
Uploading NVRAM Data (SP5-824)
255
Downloading NVRAM Data (SP5-825)
256
Software Reset
257
System Settings and Copy Setting Reset
257
System Setting Reset
257
Copier Setting Reset
258
User Tools
259
Copier/Document Server Features
259
How to Enter User Tools
259
Inquiry
259
Printer, Facsimile, Scanner Settings
259
System Settings
259
UP Mode Initial Screen: User Tools/Counter Display
259
Counter
260
Dip Switches
260
6 Detailed Section Descriptions
261
Overview
261
Paper Path
262
Registration Sensor
262
Drive Components
263
Component Layout
263
Layout
263
Drive Power Path
264
Electrical Components
265
Scanner Unit
265
Image Transfer
266
Paper Path
267
Development Units
268
Boards
269
Board Structure
270
Block Diagram
270
Controller
272
Copy Process
274
Process Control
276
Overview
276
Process Control Steps
276
Six Steps
276
When Is Process Control Done
276
Supplementary Information on Process Control
277
Scanning
279
Overview
279
ARDF Mode
280
Scanner Drive
280
Original Size Detection
281
Image Processing
283
Overview
283
A/D Conversion
284
Sbu Block Diagram
284
Signal Processing
284
White Level Correction
284
Black Level Correction
285
Image Processing
285
Troubleshooting
285
VPU Test Mode
285
Picture Element (Dot Position) Correction
286
Scan Line Correction
286
Shading Correction
286
ADS (Auto Image Density Selection)
287
Filtering
287
Scanner Gamma Correction (RGB Gamma Correction)
287
ACS (Auto Color Selection)
288
Image Separation
288
Color Conversion
289
Main Scan Magnification
289
Printer Gamma Correction
290
Asics on the BICU Board Test
292
Error Diffusion
292
Photoconductor Unit (Pcu)
293
Overview
293
Charge Corona Unit
294
Grid and Wire Cleaning
294
Power Supply
294
Opc Belt Drive
295
Quenching
295
Bottle Detection
296
Opc Belt Cleaning Unit
296
Waste Toner Collection
296
Drive
297
Image Transfer Belt Unit
297
Belt Mark Detection
298
Transfer Roller
298
Image Transfer Belt Cleaning
299
Image Transfer Belt Cleaning Unit
299
Set Switch and Full Sensor
299
Waste Toner Collection
299
Contact Mechanism
300
Drive
301
Power Supply
301
Laser Exposure
302
Overview
302
Ld Unit
303
Polygon Mirror Motor Unit
303
Speed
303
Synchronization Detector
303
Circuit
304
Front Door
304
Ld Safety Switch
304
Operation Panel Display and Switch Mechanism
305
Development
306
Development Unit
307
Memory Chip
307
Replacing Units
307
Drive
308
Toner Supply Mechanism
308
Rollers and Agitators
309
Shutter
309
Mechanism
310
Toner End Detection
310
Toner Near-End Detection
310
Toner End Detection
311
Toner End Recovery
311
Development Unit Contact Mechanism
312
Mechanism
312
Reverse Rotation
312
Development, Toner Supply, and Doctor Rollers
313
Doctor Roller
313
Power Source
313
Paper Feed
314
Overview
314
Drive Mechanism
315
Feed and Vertical Transport
315
Registration
315
Transport Speed
315
Lift Mechanism
316
Paper End/Near-End Detection
316
Paper Lift
316
Mechanism
317
Paper Size Detection
317
Switch Pattern
317
Paper Transfer and Separation
318
Image Transfer and Paper Separation
318
Jammed Paper Release
318
Overview
318
Contact/Separation Mechanism
319
Mechanism
319
Circuit
320
Paper Transfer Roller Bias
320
Power Supply
320
Temperature/Humidity Control
320
Roller Cleaning
321
Image Fusing and Paper Exit
322
Overview
322
Drive
323
Fusing Belt
324
Fusing Unit Components
324
Heating Roller Lamp
324
Pressure Roller Lamp
324
Pressure Roller Pawls
324
Fusing Bias
325
Fusing Unit Scs
325
Oil Supply
326
Oil Supply
327
Oil End Detection and Recovery
328
Temperature Control
329
Energy Saver Modes
330
Panel off Mode
331
Low Power Mode
332
Auto off Mode
333
Jam Detection
334
Specifications
335
Machine Configuration
337
Optional Equipment
339
By-Pass Tray Unit
340
Paper Tray Unit
341
Shift Tray Unit
341
Paper Height Detection
341
1-Bin Tray Unit
342
500-Sheet Finisher
342
1000-Sheet Finisher
343
Upper Tray
343
Lower Tray
343
Staple Mode
343
4
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Ricoh U-C1 B051 Specifications
General
Brand
Ricoh
Model
U-C1 B051
Category
All in One Printer
Language
English
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