4-11
4. Troubleshooting
4-1-6. No Sound
Symptom Audio is normal but no picture is displayed on the screen.-
Major
checkpoints
Check the RF Source
Check the M-star
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
No
Check a connection harness and
headphone jack/side AV.
Check Sound Processor
IC6003(M-star)
No
Picture is display, no sound.
Check a B12V Line.
Change a main PCB ass’y
No
Does the signal appear at R2008,
R2009,R2010(AUSD,AUWS,AUSCK)
of IC2002?
Check the DC 13V
id IC2002?
Change a main PCB ass’y.
No
Does the signal appear at
L2001,L2002 near IC2002?
Replace the speaker ass’y?
Yes
Connect a sound cable.
control a volume.
Yes
1
Yes
3
Yes
2
Caution Make sure to disconnect the power before working on the IP board.
