Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-42
Samsung Electronics
 Code
A1-1210
 Error message
Actuator Motor Failure #A1-1210: Turn off then on.
 Symptom / Cause
After working the Fuser BLDC motor, the Ready signal has not occurred within 1 sec.
1. Harness is defective. Connector is not connected properly.
2. Heat roller in the fuser 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.
Fuser BLDC
connector
Fuser BLDC
connector
2. Heat roller in the fuser unit has overloaded.
- Remove the fuser unit after removing rear cover and duplex unit.
- Rotate the heat roller gear. If there is any damage, the heat roller gear can’t rotate well.
(Spec : 5kgf.cm)
Replace the fuser unit.
Heat Roller Gear (Spec : 5kgf.cm)Heat Roller Gear (Spec : 5kgf.cm)