Ricoh Pro 8300S - Sc446-00; Transport Belt Motor Error

1.SC Codes
72
Solution
1. Check the harness between the image transfer power pack and the image transfer roller
(connector loose or disconnected).
2. Replace the image transfer power pack harness.
3. Check the IOB harness (connector loose or disconnected).
4. Replace the IOB harness.
5. Replace the image transfer power pack board.
6. Replace the IOB.
SC446-00
Error Name
Transport Belt Motor Error
Pattern
D
Error Condition
An error signal was detected from the transport belt motor (BLM5).
Motor Lock Signal Criteria:
 Rpm of the motor deviates from the target value by more than ±6.25%: not the rated rotation.
 Rpm of the motor deviates from the target value by less than ±6.25%: rated rotation.
Major Cause
 There is excessive torque on the ITB unit.
 Motor connector is disconnected.
 Transport belt motor (BLM5) is defective.
 Harness is broken.
 IOB is defective.
Solution
1. Check if the ITB unit is overloaded (foreign objects, plate caught or not in proper contact).
2. Check the connector of the transport belt motor and the harness of the IOB connector (connector
loose or disconnected)
3. Replace the transport belt motor (BLM5).
4. Replace the harness of transport belt motor (harness broken, not welded).
5. Replace the IOB.