Ricoh M290-27 - Page 49

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2. Remove the HVP [A]. ( x4, x1)

Electrical Components

47

Table of Contents

Important Safety Notices3
- Warnings, Cautions, Notes3
- General Safety Instructions3
- Responsibilities of the Customer Engineer4
  - Customer Engineer4
  - Reference Material for Maintenance4
- Before Installation, Maintenance4
- During Maintenance5
- After Maintenance7
  - Disposal of Used Items7
  - Points to Confirm with Operators7
- Special Safety Instructions for Toner8
- Safety Instructions for the Machine9
- Laser Safety10
- Rohs Compliance11
Symbols, Abbreviations and Trademarks12
- Symbols and Abbreviations12
- Trademarks13
- Table of Contents14
1 Product Information19
Specifications19
- Specifications of the Machine19
- Software Specifications19
New Product Information20
- Series Comparison20
- General Configuration21
- Product Overview22
  - Paper Path and Image Writing22
  - Drive Layout23
2 Installation and Preventive Maintenance25
- Installation25
- Preventive Maintenance25
3 Replacement and Adjustment27
Before You Begin27
- Special Tools27
- Printing the Configuration Page27
Exterior Covers28
- Aio28
- Bottom Cover28
- Top Cover30
  - Sfp30
  - Mfp32
Laser Unit33
- After Replacing the Laser Unit33
Paper Feed34
- Paper Feed Roller34
- Friction Pad35
- Registration Roller36
- Image Transfer Roller36
- Paper Feed Clutch38
- Bottom Plate Lift Clutch38
Drive40
- Main Motor40
Fan43
Fusing Unit44
Electrical Components45
- Main Board45
  - Main Board of SFP Models45
  - Main Board of MFP Models46
- Wi-Fi PCB (Wi-Fi Models Only)47
- Psu47
- Hvp48
Scanner50
- Scanner Unit50
- Scanner Open/Close Switch52
Sensors53
- Registration Sensor53
- Exit Sensor53
- Thermistor53
- Bottom Plate Position Sensor54
- Paper Size Sensor54
4 System Maintenance57
Utilities57
- Using CE Tools57
Firmware Update64
5 Troubleshooting65
Service Calls65
- LED Indicators and Error Status65
  - Points to Note65
- Fatal SC Codes/Fusing Related Errors66
  - Executing Fusing SC Reset66
- SC Tables67
Image Problems77
- Overview77
- Dark Lines in Halftone Areas78
6 Energy Saving79
Energy Save79
- Energy Saving Modes79

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