Ricoh G188 Service Manual page 340

Service Call Conditions
No. Type
Finisher Tray 1 shift motor error
The shift roller HP sensor of the upper tray does not activate within the
prescribed time after the shift tray starts to move toward or away from
the home position. The 1st detection failure issues a jam error, and the
2nd failure issues this SC code.
730 B
1.
2.
3.
4.
No. Type
Finisher corner stapler motor error
For the 3000-sheet finisher
For the 1000-sheet booklet finisher
740 B
The 1st detection failure issues a jam error, and the 2nd failure issues
this SC code.
G188/G189
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Shift tray HP sensor of the upper tray disconnected, defective
Shift tray motor of the upper tray is disconnected, defective
Shift tray motor of the upper tray overloaded due to obstruction
Check the connections and cables for the components mentioned
above.
Check for blockages in shift motor mechanism.
Replace the shift tray HP sensor and/or shift motor
Replace the finisher main board.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Staple movement is not finished after a certain time.
The stapler motor does not switch off within the prescribed time
after operating.
The HP sensor of the staple unit does not detect the home position
after the staple unit moves to its home position.
The HP sensor of the staple unit detects the home position after the
staple unit moves from its home position.
3-44 SM Appendix