Samsung ProXpress M337x Service Manual page 125

► Error Code
A1–1110
► Error message
Error: #A1-1110 / Motor Failure: #A1-1110. Turn off then on. Call for service if the problem persists
► Symptom
Harness or main BLDC motor or main board is defective. / OPC coupler in the toner cartridge(or imaging unit) has
overloaded.
► Troubleshooting method
1) Turn the machine off then on. If the error persists, refer to the following.
2) Remove the right cover.
3) Check if the motor connector on main board is connected properly. Reconnect it.
4) OPC coupler has overloaded. After removing the toner cartridge/imaging unit, rotate the OPC coupler.
If there is any damage, the OPC coupler can't rotate well. Replace the toner cartridge/imaging unit.
5) Remove the left cover.
6) Remove the main drive unit. (Refer to 3.3.14)
7) The main BLDC motor is defective.
a) Unplug the connector from the motor carefully.
b) Replace the main BLDC motor (JC31-00075A)with new one.
8) If the problem persists, replace the main board.
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4. Alignment and Troubleshooting
4-42