Ricoh 5510L - White Spots in Black Image Areas

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COPY QUALITY TROUBLESHOOTING 14 June, 2002

4-10

4.1.10 WHITE SPOTS IN BLACK IMAGE AREAS

Possible Cause (Printer)

• The surface of a roller is damaged or dirty

Action:

• Clean the rollers

• Replace the cartridge if necessary.

H310T511.WMF

Main Page

Laser Safety3
Table of Contents4
Installation11
Mainframe11
Installing Base Unit/Cabinet/Spacer14
Installing Optional Units16
Paper Feed Unit Type 51016
Bypass Feeder Type 51017
Isdn G4 Interface Unit Type 51019
G3 Interface Unit Type51022
Fax on Demand Type 51025
Function Upgrade Unit Type 51027
Counter Type 51028
Feature Expander Type 300 40M29
Preventive Maintenance30
Special Tools and Lubricants30
Pm Table30
Replacement and Adjustment31
External Covers31
Removing the Adf Front and Rear Covers31
Removing the Upper Guide Plate31
Removing the Rear Cover32
Removing the Operation Panel and33
Adf/Scanner Sections34
Replacing the Pick-Up Roller (Part of the Adf Maintenance Kit)34
Replacing the Feed Roller (Part of the Adf Maintenance Kit)34
Replacing the Reverse Roller and Torque Limiter35
(Part of the Adf Maintenance Kit)35
Replacing the R0 Roller36
Replacing the R1, R2 and Document Exit Rollers37
Replacing the Cis (Contact Image Sensor) (Scanner)39
Removing the Stamp Unit40
Adjusting the Scanning Top Margin40
Laser Unit41
Replacing the Laser Synchronization Detector and Ld Units41
Replacing the Polygon Motor42
Adjusting the Printing Side-To-Side Registration43
Aio Cartridge44
Replacing the Aio Cartridge44
Replacing the Transfer Roller (Part of the Fusing Maintenance Kit)45
Replacing the Power Pack46
Paper Feed and Registration47
Replacing the Paper Feed Roller47
Replacing the Registration Roller48
Adjusting the Printing Top Margin49
Sensors50
Replacing the Adf/Mdf Sensors and Switches50
Replacing the Paper-End Led Board and Paper Size Sensor Switch52
Replacing the Paper Near End Sensor53
Replacing the Upper Limit and Paper End Sensors53
Replacing the Aio Cartridge Sensor54
Replacing the Paper Exit Sensor55
Replacing the Toner End Sensor56
Replacing the Registration Sensor57
Fusing Unit58
Replacing the Fusing Unit (Part of the Fusing Maintenance Kit)58
Disassembling the Fusing Unit59
Replacing the Pressure Roller60
Replacing the Hot Roller, Fusing Lamp, and Thermofuse61
Replacing the Thermistor62
Replacing the Hot Roller Strippers63
Pcbs64
Replacing the Psu64
Replacing the Opif/Ncu/Fcu65
OPIF Board65
FCU and MBU Boards66
NCU Board67
Replacing the Lcd Controller and Lcd Board68
Replacing the Power Pack69
Replacing the Cooling Fan70
Bypass Feeder Unit71
Disassembling the Bypass Feeder Units71
Replacing the Clutch and Paper Feed Roller72
Replacing the Paper Size Detection Switch73
Replacing the Connector and Paper End Sensor74
Data or Firmware Download/Upload75
Data Copy between the IC Card and Machine76
Troubleshooting77
Copy Quality Troubleshooting77
Blank Copies78
Black Copies78
Dirty Background79
Uneven Image Density80
Vertical Black Lines81
Horizontal Black Lines82
Vertical White Lines83
Horizontal White Lines84
Black Dots/Spots85
White Spots in Black Image Areas86
Faint Copies87
Vertical Black Band89
Unfused Copies89
Ghost Image90
Toner on the Back of the Printer Paper90
Incorrectly Aligned Output (Data Shifted to the Right or Left)91
Incorrectly Aligned Output (Image Shifted Vertically)/Reduced Image91
Mechanical Problems92
Adf/Scanner92
Printer94
Service Call Conditions97
Error Codes98
Modem Status Codes in V.34 Protocol Dump108
Calling Side108
Phase 1 (V.8)108
Phase 2 (Line Probing)108
Phase 3 (Equalizer Training)109
Phase 4 and 5 (Control Channel)109
Phase 6 (Primary Channel)109
Control Channel (Post Message - Sh)110
Control Channel (Post Message - Pph)110
Control Channel Recovery (AC)110
End111
Called Side111
Phase 1 (V.8)111
Phase 2 (Line Probing)111
Phase 3 (Equalizer Training)112
Phase 4 and 5 (Control Channel)112
Phase 6 (Primary Channel)113
Control Channel (Post Message - Sh)113
Control Channel (Post Message - Pph)114
Control Channel Recovery (AC)114
End114
Error Codes for the Isdn Option115
D-Channel Layer Management116
D-Channel Link Layer116
D-Channel Network Layer117
B-Channel Link Layer117
B-Channel Network Layer118
Transport Layer118
Session Layer119
Document Layer120
Presentation Layer120
Isdn Test Function121
Leds121
Back-To-Back Test122
Service Tables and Procedures123
Service Level Functions123
Bit Switch Programming (Function 01)123
System Parameter List (Function 02)124
Error Code Display (Function 03)124
Service Monitor Report (Function 04)124
Group 3 Protocol Dump (Function 05)124
Ram Display/Rewrite/Memory Dump (Function 06)125
Counter Display/Rewrite (Function 07)125
Ncu Parameters (Function 08)126
Modem Test (Function 08)126
Dtmf Tone Test (Function 08)127
Modem Test (Function 08)127
Modem Test (Function 08)128
Operation Panel Test (Function 09)128
Lamp Test (B/W) (Function 10)128
Adf Test (Function 10)129
Lamp Tuning (Function 10)129
Lamp Test (Color) (Function 10)130
Printer Test Patterns (Function 11)130
Printer Free Run (Function 11)130
Ram Test (Function 12)131
Data Copy (Function 12)131
Service Station Fax Number (Function 13)131
Serial Number (Function 14)132
Mb Flash Memory Initialization (Function 16)132
Mb Flash Memory Formatting (Function 16)133
Mb Flash Memory Test (Function 16)133
G4 Internal Switch Programming (Function 17)134
G4 Parameter Switch Programming (Function 17)134
Printing G4 Memory Dump (Function 17)135
Printing G4 Protocol Dump List (Function 17)135
Optional G3 Bit Switches (Function 18)136
Optional Sg3 Board Ram Dump (Function 18)136
Optional Sg3 Board Ncu Parameters (Function 18)137
Optional Sg3 Board Modem Test (Function 18)137
Optional Sg3 Board Dtmf Tone Test (Function 18)138
Optional Sg3 Board V.8 Modem Test (Function 18)139
Optional Sg3 Board V.34 Modem Test (Function 18)139
Lan Sw Setting (Function 20)140
Lan Link Check (Function 20)140
Lan Loop Back Test (Function 20)141
Lan Log Dump (Function 20)141
Lan Ping Test (Function 20)141
Jpeg Test (Function 21)142
Ip-Fax Ipg3 Bit Switches (Function 22)142
Ip-Fax Port Setting (Function 22)142
Rom Version (Function 23)143
Sensor Input (Function 24)143
Bit Switches146
System Switches146
Scanner Switches161
Printer Switches162
Communication Switches165
G3 Switches175
G3-2 Switches183
G4 Internal Switches189
G4 Parameter Switches196
Ncu Parameters199
Dedicated Transmission Parameters207
Programming Procedure207
Parameters208
Service Ram Addresses212
Not Used218
Service Ram Addresses: Adf and Scanner232
Service Ram Addresses: Printer Engine (Plotter)234
Adjusting the Printing Side-To-Side Registration234
Adjusting the Printing Top Margin235
Detailed Section Descriptions236
Adf/Scanner236
Overview236
Detailed Descriptions237
Document Detection237
Document Pick-Up238
Document Feed239
Stamping240
Returning to Ready Status241
Image Scanning242
Jam Detection243
Printer244
Overview244
Laser Exposure245
Overview245
Optical Path245
Auto Power Control (APC)246
LD Safety247
LD Unit Service Call Condition247
Aio Cartridge248
Overview248
Drive249
Drum Charge250
Development251
Drum Cleaning253
Service Call Conditions for the Development Section253
Transfer and Paper Separation254
Overview254
Transfer Roller Cleaning255
Service Call Conditions for the Transfer Section255
Paper Feed256
Overview256
Paper Size Detection258
Bottom Plate Lift, Upper Limit Detection and Paper End Detection259
Paper Near-End Detection260
Paper Feed260
By-Pass Tray261
Fusing263
Overview263
Fusing265
Fusing Unit Drive265
Fusing Pressure Roller, Separation, Exit266
Fusing Drive Release266
Fusing Temperature Control267
Cooling Fan Control268
Fusing Unit Service Call Conditions269
Optional Paper Feed Units270
Overview270
Mechanisms271
Paper Size Detection271
Bottom Plate Lift, Upper Limit Detection and Paper End Detection272
Paper Near-End Detection273
Paper Feed274
Jam Detection274
Pcbs275
Fcu275
Opif (Option Interface Board)280
Ncu281
Psu281
Nicf (Network Interface Card for Facsimile)282
Sg3-D Board284
Sig4 Board285
System Features286
Vertical Black Line Correction286
Overview286
Count Detection Parameters List287
Settings for Vertical Black Line Detection288
Vertical Black Line Warning Message288
Blank289
Blank Page Detection Operation289
Blank Page Detection Switch Settings289
Energy Saver Mode290
Overview290
Setting the Energy Saver Mode Timer291
How the Energy Saver Mode Operates292
Important Points about Energy Saver and Standby295
Erase All Registered Settings296
Receiving from a Fax Information Service297
Dual Access298
Dual Access Jobs and Resources298
Additional Dual Access Limitations299
Simultaneous Broadcasting300
Operation Log301
Memory Dump List301
Sending Color Documents303
Scan Resolution304
Specifications305
Features307
Features List307
Capabilities of Programmable Items310
Component Layout311
Mechanical Components311
Electrical Components312
Pcbs313
Motors314
Sensors314
Interlock Switch315
Others315
Drive Layout316
Components316
Power Distribution317
Distribution Diagram317
Memory Back-Up Circuit318

Ricoh 5510L - White Spots in Black Image Areas

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