Ricoh D025 Service Manual page 519

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Positioning roller arm motor error
The positioning roller HP sensor does not turn on or off for a certain
time at power-on.
The positioning roller HP sensor does not turn on or off for a certain
time when the positioning roller returns to its home position from the
lower position.
The 1st detection failure causes a jam error, and the 2nd failure causes
this SC code.
798
B
-5
Disconnected or defective harness
Overload on the positioning roller arm motor
Defective positioning roller arm motor
Defective positioning roller HP sensor
1. Check or replace the harness.
2. Check for blockages in the positioning roller arm mechanism.
3. Replace the positioning roller arm motor.
4. Replace the positioning roller HP sensor.
SM Appendix 3-67
SC Tables
D023/D025