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Troubleshooting
6-8 Spindle Motor does not work
Replace
spindle
motor
14V
0V
Samsung Electronics
SPINDLE MOTOR DOES NOT WORK
Check for
voltage at Pin 46, 47
of SIC6 when PLAY button is
pressed : 0V, 0V
Check for voltage at
collector of PQ15 : 5V
Check for voltage of
collectors of PQ14, 17
: about -14V
Check for signals
No
at Pin 14 ~ 18 of PIC5
when MOTOR
is turned
Check for signals
at Pin 1 ~ 6 of PIC5
when MOTOR
is turned
Replace PIC6
No
Yes
No
Yes
No
Yes
2.5V
Yes
No
Yes
Replace SIC6
(KA9421)
Replace PQ15
Replace PQ14, 17
0.2V
2.6V
2.4V
Replace PIC5
6-8
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