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Failure Investigation for Electronic Parts
The main shaft does not rotate normally.
The main shaft does not rotate
normally.
Change main shaft encoder.
N
Y
N
Is the main shaft encoder deformed,
bent, or damaged due to contact?
Connect it properly.
N
Y
Is the main shaft sensor's lead
properly connected to CN17 on the
main PCB?
Connect it properly.
N
N
Is the main shaft motor's lead
properly connected to CN1 on the
main PCB?
Y
Change main shaft sensor
PCB.
Y
Does the machine function normally when the main
shaft sensor PCB is replaced with a reliable one?
Change main shaft motor.
N
Y
Is the resistance between pins 1 and 2 of the
main shaft motor 1.0 - 2.0Ω when the motor's
connector CN2 is removed from the main PCB?
Change power PCB.
Y
Does the machine function normally when the
power PCB is replaced with a reliable one?
Change main PCB.
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