Sharp LC-32LE345T - Audio Output Troubleshooting; PC Input Troubleshooting

LC-32LE345T
6 – 3
AudioTrouble(NoSound)
No Sound
Check if the volume is rightly set or if
mute function is off
Check if the output signal on the pin1 &
Pin4 of CNA1 is normal
Set it rightly
Check the speaker and if the speaker NG,
re
p
lace with the new s
p
eaker
OK
OK
NG
NG
OK
Change Main PWB
Function Trouble (PC)
pp
PC source No signal
Check if the VGA cable is OK? Change a VGA cable
Check if the VS and HS signals are OK? Change Main PWB
Check if the R G B signals are OK? Change Main PWB
Check the software
OK
OK
OK
OK
NG
NG
NG