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SCR-140(A4)-en 99.3.15 7:51 PM ˘ ` 11
No spindle motor rotation
Insert disc.
Focus lock?
The below waveform is
inputted in IC502 22Pin?
Spindle motor kick signal
IC502 4Pin, 29pin is 12V?
IC502 5Pin is 5V?
The below waveform is inputted in IC502 23pin?
IC502 5Pin is 5V?
Spindle Motor FPC is connected?
Replace spindle Motor
Y
N
Y
N
Y
Y
N
Y
N
Y
Y
N
Y
N
Y
Refer to 'No focus lock'
Refer to 'No focus lock'
Check IC301 38pin soldering
Check R323 soldering
Check C519 soldering
Check IC502 23pin soldering
Replace IC502
18
11
11
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