Samsung DVD-P355B/XEU, DVD-P355B/XEH, DVD-P355B/XEG SPD Waveform, Abnormal rotation of disc motor

Troubleshooting

Abnormal rotation of disc motor

Input of RF SUM		No	RIC1-54, 55 output	No
signal is normal?
			is normal?
(ZIC1-172, 173)
	(SPD Waveform)

Yes

Yes

Check RIC1 peripheral circuit and A, B, C, D.

SPD output is normal?	No
(ZIC1-189)

Check path to RIC1 and ZIC1.

Yes

Check ZIC1 peripheral circuit.

FIC1-25 output		No
is normal?
	Yes

Check FIC1 soldering and power.

FIC1-23 signal	No
MON is "H" ?

Check ZIC1.

Yes

Check or replace disc motor.

5-6 Samsung Electronics