Samsung SN-S082D Service Manual - Page 17

No spindle motor operation, The Movement of the Spindle, In case of, CD - ROM READ

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No spindle motor operation The below waveform is N outputted in IC102 123PIN? Check the power of U10, soldering and replace of IC102. Figure1. DMSO Figure2. U.V.W Y Do Pins 14(W),13(V), 12(U) show N Check the power of IC609, GND, soldering waveforms as the ones shown in Figure 2? and replace of IC609. Y FFC of connector CN601 is normally inserted? Y N After correct insertion of FFC to Connector, then retest. Replace of spindle motor The Movement of the Spindle In case of CD - ROM READ Output the upper and lower on the basis of 1.65V in 123PIN of IC102. The spindle motor rotates. The Pin No.6 of IC609 has a square wave output. IC609 8PIN continues to show voltage changes as RPM changes. (Moves above and below VREF) 15

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15
The below waveform is
outputted in IC102 123PIN?
Check the power of U10, soldering and
replace of IC102.
FFC of connector CN601
is normally inserted?
Replace of spindle motor
Check the power of
IC609, GND, soldering
and replace of
IC609.
After correct insertion of
FFC to Connector, then retest.
Do Pins 14(W),13(V), 12(U) show
waveforms as the ones shown in Figure 2?
No spindle motor operation
The Movement of the Spindle
Output the upper and lower on
the basis of 1.65V in
123PIN of IC102.
The Pin No.6 of IC609 has a
square wave output.
IC609 8PIN
continues to show
voltage changes as RPM changes.
(Moves above and below VREF)
The spindle motor rotates.
In case of
CD - ROM READ
N
Y
N
N
Y
Y
Figure
1. DMSO
Figure
2. U.V.W