Troubleshooting Guide
D023/D025 5-8 SM Appendix
Test pattern check Possible cause/Countermeasure
Others Skew correction upper limit error
Defective BICU
Defective laser optics housing unit
1. Replace the BICU.
2. Replace the laser optics housing unit.
After Executing SP2-111-001
Result: "0" in SP2-194-007
Result: No color registration errors in SP2-194-010, -011, -012
Test pattern check Possible cause/Countermeasure
The main scan registration of K is
shifted.
Abnormal SP setting value of main scan: K
Adjust the value with SP2-101-001.
The main scan length of K is
shifted.
Abnormal SP setting value of main scan length
detection: K
Adjust the value with SP2-185-001.
After Executing SP2-111-001
Result: "0" in SP2-194-007
Result: Color registration errors in SP2-194-010, -011, -012
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