Ricoh Pro 8300S - Connection Error to Downstream Unit (Multi-Folding Unit); Overcurrent Protection Device Error 1 (Multi-Folding Unit); Sc725-01; Sc725-03

1.SC Codes
278
SC725-01
Error Name
Connection Error to Downstream Unit (Multi-Folding Unit)
Pattern
D
Error Condition
A communication error with the downstream unit occurs.
Major Cause
 Power of downstream unit is not turned
 I/F harness connector (downstream unit side) is disconnected or damaged.
 Power cord (downstream unit side) connector is disconnected or damaged.
 Downstream unit control board is defective.
 Controller board is defective.
Solution
1. Reconnect the power cord of the downstream unit, and then turn the power off and on.
2. Reconnect the I/F harness of the downstream unit, and then turn the power off and on.
3. Replace the power cord of the downstream unit, and then turn the power off and on.
4. Replace the I/F harness of the downstream unit, and then turn the power off and on.
5. Replace the control board of the downstream unit, and then turn the power off and on.
6. Replace the controller board, and then turn the power off and on.
SC725-03
Error Name
Overcurrent Protection Device Error 1 (Multi-Folding Unit)
Pattern
D
Error Condition
A blown fuse is detected on the 24V1 line.
Major Cause
 Power of downstream unit is not turned to on.
 A fuse on the 24V1 line has blown.