Ricoh D037 Service Manual page 511

Test pattern check
Others
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
The main scan registration of K is
shifted.
The main scan length of K is
shifted.
After Executing SP2-111-001
Result: "0" in SP2-194-007
Result: Color registration errors in SP2-194-010, -011, -012
Test pattern check
Low image density on the output
The main scan registration is
SM Appendix
Possible cause/Countermeasure
2. Replace the laser unit.
3. Replace the BCU.
Skew correction upper limit error
Defective BCU
Defective laser unit
1. Replace the BCU.
2. Replace the laser unit.
Possible cause/Countermeasure
Abnormal SP setting value of main scan: K
Adjust the value with SP2-101-001.
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.
Possible cause/Countermeasure
Low pattern density
Do the forced process control (SP3-011-001) or
supply some toner (SP3-015-xxx).
Defective ID sensor at center
6-7
Troubleshooting Guide
D037/D038/D040/D041