Ricoh IM C400F

Troubleshooting for Image Quality Problems
SM 6-143 D0CA/D0C9/D0C8/D0CB
Troubleshooting
Test pattern check Possible cause/Countermeasure
output.
• Deformed center area on the
image transfer belt
• Defective BiCU (PCB1)
1. Replace the ID sensors
(S27-S29).
2. Replace the image transfer belt.
3. Replace the BiCU (PCB1).
The skew for M, C, Y, K is more than ±0.75 mm.
• Defective PCDU
• Defective laser optics housing unit
• Defective BiCU (PCB1)
1. Perform the color skew
adjustment (Image Adjustment).
2. Reinstall or replace the PCDU.
3. Replace the laser optics housing
unit.
4. Replace the BiCU (PCB1).
Others
• Skew correction upper limit error
• Defective BiCU (PCB1)
• Defective laser optics housing unit
1. Perform the color skew
adjustment (Image Adjustment).
2. Replace the BiCU (PCB1).
3. Replace the laser optics housing
unit.
After Executing SP2-111-003
• Result: "1" in SP2-194-007
• Result: "0" in SP2-194-010, -011, -012, -013
Test pattern check Possible cause/Countermeasure
Do SP2-111-001 or -002.
After Executing SP2-111-001
• Result: "1" in SP2-194-007
• Result: "2" or "3" (Line pattern detection failure) in SP2-194-010, -011, -012, -013
Test pattern check Possible cause/Countermeasure
White image, Abnormal image,
Low density
• Defective laser optics housing unit shutter
• Defective image processing unit
• Low density of test pattern
• Defective BiCU (PCB1)
1. Replace the ID sensor shutter solenoid (SOL2).