Ricoh G188 Service Manual page 311

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
2. Clean or replace the ID sensor.
3. Replace the IOB.
4. Replace the image transfer belt unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Image transfer belt drive motor error
The motor LOCK signal is not detected for more than two seconds
while the motor START signal is on.
Motor overload
Defective image transfer unit motor
441 D
Shorted 24 V fuse on the PSU
Defective interlock system
1. Check the motor operation with SP5804-040 to -044. Replace the
24V fuse on the PSU if ITB drive motor does not operate.
2. Replace the image transfer belt unit.
3. Replace the IOB.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Image transfer belt contact motor error
442 D
The image transfer belt contact sensor does not detect the movement
of actuator at the sensor while the polygon motor rotates.
SM Appendix
After replacing the ID sensor, input the ID sensor
correction coefficient with SP3362-013 to -018. For details,
refer to "ID sensor board" in the Replacement and
Adjustment section.
3-15
Service Call Conditions
G188/G189