Ricoh D025 Service Manual page 460

SC Tables
No. Type
SBU communication error
The SBU connection cannot be detected at power on or recovery from
the energy save mode.
144 D
1.
2.
3.
No. Type
161 D
001
002 D
D023/D025
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective SBU
Defective harness
Defective detection port on the BICU
Replace the harness.
Replace the SBU.
Replace the BICU.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
IPU error
The error result of self-diagnostic by the ASIC on the BICU is
detected.
Defective BICU
Defective connection between BICU and SBU
1. Check the connection between BICU and SBU.
Replace the BICU.
Detected an error during an access to the Ri.
Defective BICU board
1. Replace the BICU board.
3-8 SM Appendix