Ricoh G133 Service Manual page 242

SC Table
No. Type
1.
2.
3.
4.
5.
No. Type
High voltage power: Separation bias output error
The status of the power pack is checked every 20 ms. This SC is issued
if the EGB detects a short in the power pack 10 times at D(ac).
460 D
1.
2.
3.
No. Type
Toner transport motor error
The LOCK signal is not detected for 2 seconds when the transport
motor turns on.
490 D
1.
2.
3.
4.
G133
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Check the connection between the paper transfer unit and PSU.
Replace the paper transfer unit contact sensor.
Replace the paper transfer unit contact motor.
Replace the +24V fuse on the PSU.
Replace the IOB.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Damaged insulation on the high-voltage supply cable
Damaged insulation around the high-voltage power supply.
Replace the high-voltage supply cable.
Replace the high-voltage power supply unit.
Replace the IOB.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Toner transport motor overload
Disconnected or broken harness
Defective toner transport motor
Opened +24V fuse on the PSU
Defective interlock switch
Check or replace the harness.
Replace the toner transport motor.
Replace the +24V fuse on the PSU.
Replace the interlock switch.
4-26 SM