Ricoh Pro C7200S Troubleshooting Manual page 24

1.SC Codes
SC No. Level
SC154- D Scanner Communication Error (Back)

00




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.
2.
3.
4.
5.
SC No. Level
SC161- D IPU Error (LSYNC abnormal) (Back)
02
When the IPU self-diagnosis test is conducted before back side scanning, the self-
diagnosis startup register in the ASIC (Macaron) checks whether output signals
(Lsync and clock) from the CIS have been input to the Macaron.
This error is detected if these signals have not been input.



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.
2.
3.
20
Error Name/Error Condition/Major Cause/Solution
Serial communication error between the CIS unit and the ADF controller
board.
This error is detected when the value scanned in the ASIC on the CIS was
differ from the expectation, or when the FROM data in CIS unit did not
scanned normally.
The first and second consecutive occurrences of each constitute jams. The
third occurrence constitutes an SC.
Connector or harness between ADF control board and CIS board defective
(disconnected or broken)
CIS unit defective
ADF controller board defective
Reconnect the following connectors:

ADF controller board - CIS harness connector
Replace the CIS.
Replace the Scanner carriage -IPU harness
Replace the harness for control signal.
Replace the ADF controller board.
Error Name/Error Condition/Major Cause/Solution
CIS and IPU (or BCU) not connected correctly or defective
CIS unit/back side relay board defective
IPU (or BCU) board defective (ASIC (Macaron) failure, etc.)
Reconnect the following connectors:

CIS-IPU/BCU harness connector
Replace the CIS.
Replace the IPU board.