Error Name/Error Condition/Major Cause/Solution
• Scanner Carriage – BiCU (PCB16) connector
• SBU (PCB3) – LEDB connector (SBU (PCB3) side connector which is on
the scanner carriage)
• BiCU (PCB16) – IOB (PCB17) connector
3. CIS defective
Replace the CIS.
4. Harness defective
Replace the following harnesses.
• CIS CONNECT PCB (PCB28)– BiCU (PCB16) harness
• CIS – CIS CONNECT PCB (PCB28) harness
5. BiCU (PCB16) defective
Replace the BiCU (PCB16).
6. CIS CONNECT PCB (PCB28) defective
Replace theCIS CONNECT PCB (PCB28).
Error Name/Error Condition/Major Cause/Solution
Scanner communication error (back side)
• CIS connection cannot be confirmed
• Cannot communicate with CIS or other scanning device, or communication is
abnormal
Error detection timing;
• During scanner startup (main power was turned on or the machine returned
from energy saving mode)
• During a scan
• Connector disconnected
• CIS defective
• Harness defective
• BiCU (PCB16) defective
• CIS CONNECT PCB (PCB28) defective
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 (PCB16) connector
• SBU (PCB3) – LEDB connector (SBU (PCB3) side connector which is on
the scanner carriage)
• BiCU (PCB16) – IOB (PCB17) connector
2. CIS defective Replace the CIS.
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