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9. Troubleshooting
9-1 Main

1.POWER




Samsung Electronics 9-1
2.OUTPUT




9-2 Samsung Electronics
3. Protection(When High Voltage at Protection port)
3-1 In this case "LOW" for, Base port of Q 12(R2003 TR)at MAIN PCB




Samsung Electronics 9-3
3-2 In this case "LOW" for Base of Q 13(A733)at Main PCB




3-3 Check the Connector Wire Ass'y Connection of each PCB
;DVD MECHA-Main PCB (8P, PW4)
;POWER TRANS-Main PCB (CW3)
;POWER TRANS-Main PCB (PW2)
;POWER TRANS-Main PCB (PW1)




9-4 Samsung Electronics
9-2 DVD Servo Parts




V : 1V/div V : 1V/div V : 1V/div
H : 5ns/div H : 5ns/div H : 5ns/div

Fig. 1-2 Fig. 1-3 Fig. 1-4


Samsung Electronics 9-5
9-6 Samsung Electronics
Samsung Electronics 9-7
9-8 Samsung Electronics
0.6V


FE signal


SBAD signal 1.6V




Samsung Electronics 9-9
TF signal




RFRP signal




9-10 Samsung Electronics
V : 500mV/div V : 500mV/div V : 500mV/div

H : 100ns/div H : 50ns/div H : 50ns/div




Samsung Electronics 9-11
9-3 DVD MPEG Parts




9-12 Samsung Electronics
Samsung Electronics 9-13
3.Audio operation


3




Check Audio out signal N Check Audio Digital signal
at pin 23~28pin of AIC1 at pin 33,36,37 of U13



Y


N
Audio out Check Main AMP parts



Y

OK




Audio Digital Signal




9-14 Samsung Electronics