Ricoh G133 Service Manual page 239

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
1. Remove the heat seal from each PCU.
2. Replace the defective PCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Drum gear position sensor error
The machine does not detect the drum position signal for 3 seconds at
the drum phase adjustment.
380 C
Dirty or defective drum gear position sensor
1. Replace the drum gear position sensor.
2. Replace the PCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
396 D Drum/Development motor error: K
397 D Drum/Development motor error: M
398 D Drum/Development motor error: C
399 D Drum/Development motor error: Y
The machine detects a High signal from the drum/development motor
for 2 seconds after the drum/development motor turned on.
Overload on the drum/development motor
Defective drum/development motor
Defective harness
- -
Shorted 24 V fuse on the PSU
Defective interlock system
1. Check or replace the harness.
2. Replace the drum/development motor.
3. Replace the 24V fuse on the PSU.
SM 4-23
SC Table
G133