Samsung CLX-8540ND Service Manual page 327

Troubleshooting
● Code : 53-009 ● Error message : Too much paper in stacker(1~6). Remove printed paper
● Symptom : There is no paper on Mailbox stacker but the error message is displayed by the full detection
sensor defect.
● Possible Cause: Mailbox empty detection sensor defect, Full detection sensor defect, Finisher Main
Board defect.
● Troubleshooting method :
1. If the connection between Finisher and machine is correct and finisher works properly, follow the next
step.
2. Check the connection between finisher and mailbox.
3.Check if the empty detection sensor is connected properly and the actuator is broken.
4. Check if the full detection sensor is connected properly and the actuator is broken.
5. If the problem persists, replace the mailbox main board.
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