Ricoh G188 Service Manual page 346

Service Call Conditions
No. Type
1.
2.
No. Type
Stack junction gate motor error
The stack junction gate 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.
767 B
1.
2.
No. Type
Bridge unit error
The machine recognizes the finisher, but does not recognize the bridge
unit.
791 D
1.
2.
No. Type
792 B Finisher error
The machine does not recognize the finisher, but recognizes the bridge
G188/G189
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective motor
Check the connections to the stacking sponge roller motor.
Defective stacking sponge roller motor.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Motor harness disconnected, loose, defective
Defective motor
Check the connections to the stack junction gate motor.
Defective stack junction gate.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective connector
Broken harness
Check the connections between the bridge unit and the machine.
Install a new bridge unit.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
3-50 SM Appendix