Troubleshooting Guide
SM Appendix 6-7 D037/D038/D040/D041
Appendix:
Trouble-
shooting
Guide
Test pattern check Possible cause/Countermeasure
2. Replace the laser unit.
3. Replace the BCU.
Others Skew correction upper limit error
Defective BCU
Defective laser unit
1. Replace the BCU.
2. Replace the laser 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 SP2-102-001 and -003.
Note:
The setting value of these SPs should be same.
After Executing SP2-111-001
Result: "0" in SP2-194-007
Result: Color registration errors in SP2-194-010, -011, -012
Test pattern check Possible cause/Countermeasure
Low image density on the output Low pattern density
Do the forced process control (SP3-011-001) or
supply some toner (SP3-015-xxx).
The main scan registration is Defective ID sensor at center
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