Is there
Spindle control DSP output?
(LIC201 pin70)
Spindle operation is abnormal
Is there
Spindle drive voltage output?
(LIC301 pin 11, 13, 16)
Is there
Spindle drive voltage output?
(LIC301 pin 1, 2, 3)
Check the Connection LPM301.
Replace the Spindle Motor.
NO
NO
NO
YES
YES
Is there
FG signal input?
(LIC201 pin 71)
NO
YES
YES
Check the output of LIC301 pin 43.
Check the connector LPM301.
Replace LIC301.
Replace LIC201.
OK