Ricoh Pro 8300S - 590-07, 590-08, 590-09: Stepper Motor Error (IOB Board)

1.SC Codes
188
2. Check the connection.
Reconnect the connectors (IOB, corresponding motor).
3. Replace the motor.
4. Replace the DDRB.
5. Replace the IOB.
6. Replace the harness between the IOB, the DDRB, and the motor.
SC590-07, 08, 09
Error Name
590-07, 590-08, 590-09:
Stepper Motor Error (IOB Board)
Pattern
D
Error Condition
The stepper motor controlled by the IOB 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:
 590-07: Charge Wire Cleaner Motor (STM1)
 590-08: Toner Agitator Motor (STM33)
 590-09: Toner Feed Motor (STM32)
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 (IOB, corresponding motor).
3. Replace the motor.
4. Replace the IOB.
5. Replace the harness between the IOB and the motor.