Ricoh D025 Service Manual page 472

SC Tables
No. Type
380 C Drum gear position sensor error: K
381 C Drum gear position sensor error: M
382 C Drum gear position sensor error: C
383 C Drum gear position sensor error: Y
The machine does not detect the drum position signal for 3 seconds at
the drum phase adjustment.
1.
2.
No. Type
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.
- -
1.
2.
3.
D023/D025
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Dirty or defective drum gear position sensor
Replace the drum gear position sensor.
Replace the PCU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Overload on the drum/development motor
Defective drum/development motor
Defective harness
Shorted 24 V fuse on the PSU
Defective interlock system
Check or replace the harness.
Replace the drum/development motor.
Replace the 24V fuse on the PSU.
3-20 SM Appendix