Spindle Operating Is Abnormal - LG HB954TB Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

5. SPINDLE OPERATING IS ABNORMAL

Spindle operating is abnormal
Is there
spindle control output?
(LIC501 Pin58)
YES
Is there
spindle drive voltage
output? (LIC201 Pin12,
13,14,16)
YES
Is there
spindle Motor input
voltage? (LPM301
Pin3,4,5,6)
YES
Check the
Connection LPM301.
NO
Replace the LIC501.
Is there
NO
FG signal input?
(LIC501 Pin96)
NO
• Check the output of LIC201 Pin19.
• Check the connector LPM301.
• Replace the LIC201.
NO
Replace the spindle motor.
(Traverse assembly)
4-6
OK