SC1xx: Scanning
SM 6-11 D0CA/D0C9/D0C8/D0CB
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC142-00 D White Level Detection Error
The white peak level cannot be in the prescribed value when adjusting the
scanner gain.
This SC is detected when the scanner power is turned on and the machine
returns from the energy saver mode.
• Condensation in scanner unit
• Scanner carriage defective
• BiCU defective
• Harness defective
• Connector defective (disconnected, loose)
• White plate for shading adjustment is dirty or installed incorrectly.
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 - BiCU harness (FFC)
• SBU (PCB11) - LEDB (scanner lamp board) harness (FFC)
connector
2. Check the white plate that is used for shading adjustment. This plate is
attached to the back of the sheet-through or platen exposure glass.
If the white plate is dirty, clean it or replace the sheet-through exposure
glass.
3. Replace the scanner carriage
4. Replace the BiCU (PCB1).
5. Replace the following harnesses:
• Scanner Carriage - BiCU (PCB1) (FFC)
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