Ricoh G188 Service Manual page 345

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
2. Replace the punch movement motor
Paper position sensor slide motor error
The paper position sensor moves but is not detected at the home
position within the specified time. The 1st detection failure issues a jam
error, and the 2nd failure issues this SC code.
764 B
Motor harness disconnected, loose, defective
Defective motor
1. Check the connections to the paper position sensor slide motor.
2. Replace the paper position sensor slide motor.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Fold unit bottom fence motor error
The bottom fence of the fold unit moves but is not detected at the home
position within the specified time.
The 1st detection failure issues a jam error, and the 2nd failure issues
this SC code.
765 B
Motor harness disconnected, loose, defective
Defective motor
1. Check the connections to the fold unit bottom fence motor.
2. Defective fold unit bottom fence motor.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
766 B Stacking sponge roller motor error
The sponge roller moves but is not detected at the home position within
the specified time. The 1st detection failure issues a jam error, and the
2nd failure issues this SC code.
Motor harness disconnected, loose, defective
SM Appendix
Service Call Conditions
3-49 G188/G189