Samsung DVD-P191 Service Manual page 28

Trouble Shooting
4-10
Abnormal rotation of
disc motor
Input of RF SUM
signal is normal
Yes
Spindle-
PWM output is normal ?
(DIC1-106)
Refer to a pattern
Yes
image of Table 4-5
MIC1-17,
18 output is
normal ?
Refer to a pattern
Yes
image of Table 4-6
MIC1-28 signal
STBY is "H"?
Refer to a pattern
Yes
image of Table 4-6
Check or replace disc motor
No
Check A,B,C,D,E
No
Check DIC1 peripheral circuit
No
Check MIC1 soldering and power
No
Check. MIC1
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