Samsung DVD-R120/AXAX Instrucciones De Servicio página 45

Troubleshooting
Audio Input is not Recording
Check the select signal pin9,10
pin 16 of IC203 and 12Vcc of CN10
Check the 3.3V pin14
Check Digital clock and data
Check the passive parts
5-10
of IC203(JACK PCB)
Yes
Check all the 12Vcc
AIC4(JACK).
Yes
and 5V pin5 of AU5
(MAIN PCB)
Yes
pin 10, 11, 12, 15 of
AU5(MAIN PCB)
Digital clock(10)
Yes
around jack pin.
No
Check pin 90,91 of the Front Mrcom
IC601 (JACK PCB)
No
Check SMPS
No
Replace Main PCB
No
Replace Main PCB
Digital clock(11)
Digital clock(12) Digital clock(15)
Samsung Electronics