Ricoh G133 Service Manual page 234

SC Table
No. Type
1.
2.
3.
4.
5.
6.
No. Type
Shutter sensor time over error: Close
The shutter close sensor does not detect "ON" for 2000 msec after the
shutter motor turns on.
290 D
1.
2.
3.
4.
5.
No. Type
291 C Shutter overrun error 1: Close
The shutter close sensor loses the "ON" signal after the shutter was
closed.
G133
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Check and reinstall the image transfer belt unit and PCUs.
Check if each toner bottle has enough toner.
Replace the ID sensor.
Replace the image transfer belt unit.
Replace the PCU(s).
Replace the laser optics housing unit.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective shutter close sensor
Disconnected or broken harness
Defective shutter motor
Defective shutter
Shutter motor overload
Defective IOB
Check or replace the harness.
Replace the shutter on the laser optics housing unit.
Replace the shutter motor.
Replace the shutter close sensor.
Replace the IOB.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective motor
Change of load to shutter motor
4-18 SM