Ricoh G188 Service Manual page 341

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Staple jam
Motor overload
Defective stapler motor
1. Check the connections and cables for the components mentioned
above.
2. Replace the HP sensor and/or stapler motor
3. Replace the finisher main board.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Finisher corner stapler rotation motor error
The stapler does not return to its home position within the specified time
after stapling.
The 1st detection failure issues a jam error, and the 2nd failure issues
this SC code.
741 B
Defective stapler rotation motor
Overload to the stapler rotation motor
Defective stapler rotation HP sensor
1. Replace the stapler rotation motor.
2. Replace the stapler rotation HP sensor.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
742 B Finisher stapler movement motor error
For the 3000-sheet finisher
Staple movement is not finished for a certain time.
For the 1000-sheet booklet finisher
The stapler HP sensor is not activated within the specified time
after the stapler motor turned on.
The 1st detection failure issues a jam error, and the 2nd failure issues
this SC code.
SM Appendix
Service Call Conditions
3-45 G188/G189