Ricoh MF4 - Image Transfer; Image Transfer Belt Unit Replacement

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6. Harness guide [E] ( ×4, hook × 1)

7. Drive unit [F] ( × 4)

8. ITB gear [G], Color AIO motor [H] [I] (snap ring × 1 each)

4. Replacement and Adjustment

64

Table of Contents

Safety Notices3
- Important Safety Notices3
- Laser Safety4
Symbols, Abbreviations and Trademarks5
- Trademarks5
- Table of Contents6
1 Product Information13
General Specifications13
Supported Paper Sizes14
Machine Overview15
- Component Layout15
- Paper Path18
  - ADF (Only for M203/M204)18
- Drive Layout19
Machine Configuration21
- Printer Model (M199/M200)21
- MF Model (M203/M204)21
Guidance for those Who Are Familiar with Predecessor Products22
2 Installation23
Installation Requirements23
- Environment23
- Machine Level24
- Machine Space Requirements24
  - Printer Models (M199/M200)24
  - MF Models (M203/M204)25
- Power Requirements25
- Installation Procedure26
3 Preventive Maintenance27
4 Replacement and Adjustment29
Before You Start29
- General Precautions29
- Releasing Plastic Latches31
- After Servicing the Machine31
- Lithium Batteries (MF Models)32
Special Tools33
Exterior Covers34
- Rear Cover34
  - Rear Cover (Printer Models)34
  - Rear Cover (MF Models)35
- Right Cover36
- Left Cover37
- Front Cover Unit38
Scanner Unit (Only for MF Models)40
- Scanner Unit40
ADF (Only for MF Models)44
- ADF Unit44
- Original Tray45
- ADF Pick-Up Roller45
- ADF Feed Roller46
- ADF Separation Pad47
- ADF Front Cover47
- ADF Rear Cover48
- ADF Motor49
- ADF Top Cover50
- Document Sensor51
- ADF Feed Sensor54
Laser Unit55
- Caution Decal Locations55
- Laser Optics Housing Unit55
AIO Cartridge (All in One Cartridge)64
- AIO Cartridge64
- Black AIO Motor64
- Color AIO Motor67
Image Transfer70
- Image Transfer Belt Unit70
  - After Replacing the Image Transfer Belt Unit71
- ITB (Image Transfer Belt) Cleaning Unit71
- Agitator Motor72
- ITB (Image Transfer Belt) Contact Motor74
- ITB (Image Transfer Belt) Contact Sensor75
- TM (Toner Mark) Sensor Base76
- Waste Toner Bottle Set Sensor77
- Waste Toner Overflow Sensor79
Paper Transfer80
- Transfer Unit80
- Transfer Roller80
- Registration Roller82
  - Reassembling the Registration Roller Unit83
- Registration Sensor83
- Registration Clutch84
Image Fusing85
- Fusing Unit85
- Fusing Lamp87
  - When Reinstalling the Fusing Lamp90
  - When Reassembling the Fusing Unit91
- Transport/Fusing Motor92
Paper Feed94
- Paper Feed Clutch94
- Paper Feed Roller94
- Separation Pad95
- Paper End Sensor96
Paper Exit98
- Paper Exit Roller98
- Paper Exit Sensor99
Electrical Components101
- Controller Board101
  - Controller Board (Printer Models)101
  - Controller Board (MF Models)102
- EGB (Engine Board)104
  - EGB (Printer Models)104
  - EGB (MF Models)106
- FCU (Only for MF Models)108
- Operation Panel109
- Opu112
  - OPU (Printer Models)112
  - OPU (MF Models)112
- Wi-Fi Board113
- Interlock Switches114
- Fusing Fan Motor115
- Fusing Stripper Pawl Solenoid116
- Fusing Pressure Release Sensor119
- LSU Fan Motor119
- ID Chip Board120
- Psu121
- High Voltage Power Supply Board123
- Temperature/Humidity Sensor124
- Duplex Motor124
- Speaker (Only for MF Models)127
- Eeprom128
  - Checking that MUSIC was Performed Correctly130
5 System Maintenance Reference131
Service Menu131
- Overview131
  - Menu Mode131
  - Special Mode131
- Maintenance Mode Menu (MF Models)132
  - Menu List132
- Service Mode (Printer Models)144
  - Menu List144
- Fax Service Test Menu (Only for MF Models)148
- Size Mismatch Detection Menu150
  - Entering the Size Mismatch Detection Menu150
Configuration, Maintenance and Test Page Information151
- Overview151
  - To Print the Configuration Page/ Test Page/ Maintenance Page (Printer Models)151
  - To Print the Configuration Page/ Maintenance Page (MF Models)151
- Error Log152
- Counter and Coverage (Only for Printer Models)152
  - Configuration Page152
Firmware Updating154
- Checking the Machine Firmware Version154
  - To Print the Configuration Page (Printer Models)154
  - To Print the Configuration Page (MF Models)154
- Updating the Controller Firmware154
  - Procedure155
- Updating the Engine Firmware157
- Boot Loader Firmware160
6 Troubleshooting161
Service Call Conditions161
- Summary161
- Engine SC161
- Controller SC171
  - Sc8Xx171
Error Codes172
- Overview172
- Error Codes List172
Fax Error Code Definition (Only for MF Models)176
- Basic Error Code Structure176
- Error Code Table177
  - The Following Information Is also Included in the User Guide180
Fax Error Clear Principle (Only for MF Models)184
Image Problems185
- Overview185
- Image Problem185
7 Environmental Conservation187
Energy Saving187
- Energy Saver Modes187
  - Timer Settings (Printer Models)188
Paper Save190
- Controller Specifications206
- User Replaceable Items213
- Yield Items and Service Maintenance213
- Exchange and Replace Procedure215
- Cleaning Points after Machine Arrival at Depot215

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