Ricoh MP C3004 Field Service Manual page 884

6. Troubleshooting
SC No.
SC No.
SC272-10
876
Type Error Name/Error Condition/Major Cause/Solution
In view of parity, 3 retries were performed
• BCU defective
• Harness defective
• LDB defective
1. Turn the main power OFF/ON.
2. Reconnect the following connectors;
• LDB-IPU harness
• IPU-BCU harness
3. Replace the LD unit.
4. Replace the BCU.
5. Replace the following harnesses;
• LDB-IPU harness
• IPU-BCU harness
Type Error Name/Error Condition/Major Cause/Solution
D LD driver communication error: Other
LD voltage does not satisfy the specified voltage (5 V).
• BCU defective (LD5V Power error)
• LDB defective (LD drive error)
• LDB connector defective (loose, broken)
• Interlock switch defective
1. Turn the main power OFF/ON.
2. Reconnect the connectors between LDB and IPU.
3. Replace the IPU.
4. Replace the LD unit.
5. Replace the harness between LDB and IPU.
6. Replace the interlock switch.