Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-87
Samsung Electronics
 Code
H2-4101
 Error message
Paper jam inside of mailbox. Remove paper
 Symptom / Cause
Mailbox Entrance sensor actuator does not return after a paper covers it.
IOT Exit Roller grabs the paper. Or Mailbox Feeding Motor Stops. Or Mailbox Entrance Sensor damaged or
harness damaged. Or Mailbox Main Board damaged.
 Troubleshooting method
1. Check Jam Occurrence in IOT.
- If the IOT roller is grabbing the paper, it’s IOT
fault.
2. Check Mailbox Main Board Harness connection.
3. Check Mailbox Entrance operation & harness
connection.
4. Check Mailbox Feeding Motor Harness
connection and operation.
5. If the same problem happens after checking 1~4,
replace the mailbox main board.
6. If the same problem happens after checking 5,
replace the mailbox harnesses.