Ricoh M0A0 - Page 256

6.Troubleshooting
244
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
3. Replace the following harnesses;
 Scanner Carriage - BiCU harness (FFC)
4. Replace the BiCU.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC144-
00
D
SBU Communication Error
Cannot correctly establish communication with the SBU.
 BiCU defective
 Harness defective
 Connector defective (disconnected, loose)
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)
 BiCU - LEDB harness (FFC)
2. Replace the following harnesses;
 Scanner Carriage - BiCU harness (FFC)
3. Replace the BiCU.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC151-
00
D
Black level correction error: rear side
The automatic adjustment has failed to correct the black level (rear side) to the permissible
range.
 SPDF CIS defective
 BiCU defective
 Harness defective
 Connector defective (disconnected, loose)
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;
 SPDF CIS - BiCU harness (FFC)
2. Replace the SPDF CIS.
3. Replace the following harnesses;
 SPDF CIS - BiCU harness (FFC)
4. Replace the BiCU.