Samsung DVD-P360/CDM Service Manual page 29

Troubleshooting
Abnormal rotation of
disc motor
Input of RF SUM
No
Check RIC1 peripheral
signal is normal?
circuit and A, B, C, D.
(ZIC1-157)
(SPD Waveform)
Yes
No
SPD output is normal?
(ZIC1-198)
Yes
Check ZIC1 peripheral circuit.
No
FIC1-25 output
Check FIC1 soldering and power.
is normal?
Yes
No
FIC1-23 signal
Check ZIC1.
MON is "H" ?
Yes
Check or replace disc motor.
Samsung Electronics 5-5