Samsung DVD-VR320/XEF Manual page 60

Troubleshooting
No audio on line input mode or
recorded disc playback
Check select signal of
No
check pin13, 14 (input select)of IC802
pin26, 27, 28, 29 in IC802
(jack board)
Yes
No
Check pin19 of IC802,pin18
Check SMPS board
of MCON2,and pin16 of MCON2
in jack board
Yes
Check all the vcc of
No
Replace main PCB
AIC9,AIC81,AIC82
(main board)
Yes
No
Check digital clock of
pin10,11,12,15
Yes
Check passive components
around jack-pin and IC802
6-28 Samsung Electronics