The white level peak of the DF did not reach the prescribed threshold when lamp
error was detected.
Error detection timing;
• During a scan from DF: During white level peak confirmation. When the
scanning of the white guide plate is completed.
Check if the SC occurs by turning the main 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. Check the white guide plate (DF).
Check the white guide plate attached to the exposure glass. If the white guide
plate is in an unusual state, replace the white guide plate.
2. Reconnect the connector.
Reconnect the following connectors;
• Scanner Carriage – BiCU (PCB16) connector
• BiCU (PCB16) – IOB (PCB17) connector
3. BiCU (PCB16) defective
Replace the BiCU (PCB16).
4. CIS defective
Replace the CIS.
5. Harness defective
Replace the following harnesses.
• CIS CONNECT PCB (PCB28)– BiCU (PCB16) harness
• CIS – CIS CONNECT PCB (PCB28) harness
6. CIS CONNECT PCB (PCB28) defective
Replace the CIS CONNECT PCB (PCB28).
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