Ricoh B230 Service Manual page 283

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Drive unit fan error
The BICU does not receive the lock signal 10 seconds after turning on
the drive unit fan motor.
531 D
Defective drive unit fan motor
1. Replace the drive unit fan motor.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Ventilation fan (at the left side of the machine) motor-front/rear error
The BICU does not receive the lock signal 10 seconds after turning on
the ventilation fan motor-front/rear.
532 D
Defective ventilation fan motor-front or rear
1. Replace the ventilation fan (at the left side of the machine)
motor-front or rear.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Toner supply tube fan error
The BICU does not receive the lock signal 10 seconds after turning on
the toner supply tube fan motor.
533 D
Defective toner supply tube fan motor-front or rear
1. Replace the toner supply tube fan motor.
SM 4-43 B230/B237