A specific revolution is not detected from the main motor rotation detection
signal (MLOK*), causing the signal to go '1'. (main motor fault)
Possible cause .
The main motor (M101) is faulty. The controller PCB is faulty.
1) Connector
Is the connection of the connector (J903) of the main motor and the
connector (J06) on the DC controller PCB normal?
NO : Correct the connection.
2) Main motor (M101), DC controller PCB
Try replacing the main motor. Is the fault corrected?
YES : Replace the main motor.
NO : Check the wiring; if normal, replace the DC controller PCB.
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