Ricoh MPC 2800 AT-C2 Mode D'emploi page 485

Test pattern check
The skew for M, C, Y is more than
±0.75 mm from the main scan
registration of K
Others
After Executing SP2-111-003
• Result: "1" in SP2-194-007
• Result: "0" in SP2-194-010, -011, -012.
Test pattern check
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
Test pattern check
White image, Abnormal image,
Low density
Possible cause/Countermeasure
• Defective PCU
• Defective laser optics housing unit
• Defective BICU
1. Reinstall or replace the PCU.
2. Replace the laser optics housing unit.
3. Replace the BICU.
• Skew correction upper limit error
• Defective BICU
• Defective laser optics housing unit
1. Replace the BICU.
2. Replace the laser optics housing unit.
Possible cause/Countermeasure
Do SP2-111-001 or -002.
Possible cause/Countermeasure
• Defective laser optics housing unit shutter
• Defective image processing unit
• Low density of test pattern
• Defective BICU
1. Replace the shutter motor.
2. Replace the high voltage power supply unit.
3. Do the forced process control (SP3-011-001) or supply
some toner (SP3-015-xxx).
Troubleshooting Guide
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