C4000 Polygon motor synchronization problem
The polygon motor does not reach the
stable speed within 15 s of the START
signal turning on.
Poor contact in the
polygon motor connector
terminals.
Reinsert the connector. Also check for continuity
within the connector cable. If none,
remedy or replace the cable.
Defective polygon
motor.
Replace the LSU.
Defective engine
PCB.
Replace the engine PCB and check for cor
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