Sc590-03; Stepper Motor Error (Tdrb Board) - Ricoh Pro 8300S Troubleshooting Manual

Major Cause
Connector is not connected properly.

Motor is defective.

 Control board is defective.
Harness between the board and the motor is defective.

Motors:
Registration Entrance Motor (STM13)

Registration Shift Motor (TE) (STM14)

 Registration Timing Motor (STM15)
Registration Shift Motor (LE) (STM17)

Transfer Timing Motor (STM18)

Duplex Transport Motor 1 (STM22)

Registration Gate Motor (STM16)

 Main Relay Motor (STM24)
LCT Relay Separation Motor (STM25)

PTB Motor (STM4)

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 (DRB, IOB, corresponding motor).
3. Replace the motor.
4. Replace the DRB.
5. Replace the IOB.
6. Replace the harness between the IOB, the DRB, and the motor.

SC590-03

Error Name

Stepper Motor Error (TDRB Board)

Pattern
D
Error Condition
The stepper motor controlled by the TDRB has failed.
(This SC is not detected if the front door is open.)
1.SC Codes
185