Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-40
Samsung Electronics
 Code
A1-1110
 Error message
Actuator Motor Failure #A1-1110: Turn off then on.
 Symptom / Cause
After working the main BLDC motor, the Ready signal has not occurred within 1 sec.
1. Harness is defective. Connector is not connected properly.
2. OPC coupler in the imaging unit has overloaded.
3. Main BLDC motor is defective.
4. Engine board is defective.
 Troubleshooting method :
叛First, turn the machine off then on. If the error persists, refer to the following.
1. Check if the connector is connected properly. Reconnect it.
Main BLDC
connector
Main BLDC
connector
2. OPC coupler has overloaded.
After removing the imaging unit, rotate the OPC coupler.
If there is any damage, the OPC coupler can’t rotate well.
Replace the imaging unit.
OPC coupler
Spec : 4kgf.cm