Ricoh MP C2504 Field Service Manual page 781

6. Troubleshooting
SC No.
772
Type Error Name/Error Condition/Major Cause/Solution
Check if the SC occurs by turning the power OFF then ON. If the SC
occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1. Reconnect the following connectors;
• Scanner Carriage - IPU harness (FFC)
• SBU - LEDB harness (FFC)
• IPU- BCU harness
2. Check the white reference seal that attached back of sheet-through
exposure glass. Replace the sheet-through exposure glass, if dirty or
damaged.
3. Replace the Scanner Carriage.
4. Replace the IPU.
5. Replace the following harnesses;
• Scanner Carriage - IPU harness (FFC)
• IPU - BCU harness
6. Replace the BCU.