Ricoh MP C2504 Field Service Manual page 829

6. Troubleshooting
SC No.
SC533-03
SC533-04
SC No.
SC534-01
SC534-02
SC534-03
820
Type Error Name/Error Condition/Major Cause/Solution
D PSU Cooling Fan Lock
D Controller Box Cooling Fan Lock
In the motor ON state, the value of the lock sensor is checked every 0.1
sec.
If a lock signal is not obtained for 50 times consecutively.
• Motor defective
• Connector disconnected
• Harness broken
• IOB defective
• Replace the PSU exhaust fan for SC533-01, PSU cooling fan for
SC533-04 or controller box cooling fan for SC533-04.
• Reconnect the connector.
• Replace the harness.
• Replace the paper transport IOB (for SC533-01, -03).
• Replace the imaging IOB (for SC533-04).
Type Error Name/Error Condition/Major Cause/Solution
D Main Exhaust Fan Lock
D Toner Supply Cooling Fan Lock
D Ozone Exhaust Fan Lock