Ricoh Pro 8300S - 590-05, 590-06: Stepper Motor Error (DDRB Board)

1.SC Codes
187
 Exit/Invert Motor (STM20)
 Invert Entrance Motor (STM19)
 Duplex Transport Motor 1 (STM22)
 Duplex/Invert Motor (STM21)
Solution
Be careful not to bend the pins of the connector.
1. Locate the failed motor using Output Check.
(Continue to the next step even if you can not find the motor.)
2. Check the connection.
Reconnect the connectors (EDRB, IOB, corresponding motor).
3. Replace the motor.
4. Replace the EDRB.
5. Replace the IOB.
6. Replace the harness between the IOB, the EDRB, and the motor.
SC590-05, 06
Error Name
590-05, 590-06: Stepper Motor Error (DDRB Board)
Pattern
D
Error Condition
The stepper motor controlled by the DDRB has failed.
(This SC is not detected if the front door is open.)
Major Cause
 Connector is not connected properly.
 Motor is defective.
 Control board is defective.
 Harness between the board and the motor is defective.
Motors:
 590-05: Decurl Feed Motor (STM28)
 590-06: Decurl Unit Motor (STM29)
Solution
Be careful not to bend the pins of the connector.
1. Locate the failed motor using Output Check.
(Continue to the next step even if you can not find the motor.)