Table of Contents
Advertisement
Main PCB Trouble Diagnosis
5. When No Sound
With a Video input(video&sound) Outputs
Problem of SPEAKER or SOUND CABLE.
So, replace SPEAKER or SOUND CABLE
Check start
Y
Do images display on
screen?
Y
Is the Sound input Jack
properly connected?
Y
Is the Speaker connection
correctly connected?
Y
of 4th and 19th of JA109 ok?
Y
Check 11th pin of IC901 & 903?
Y
Is the sound output of JP901 in JACK
PCB normal?
Y
1. Check AC connection
N
2. Check Power S/W ON
3. Check MAIN or other PCBs
N
Check the connection of
Jack(PDP and AV device)
N
Check the connection of
Speaker
1. Check connection between
N
MAIN and SUB PCB
2. Or IC104's problem.
Replace MAIN PCB.
N
IC 904's problem.
Replace SUB PCB.
N
IC901 or IC903 Problems.
Replace SUB PCB.
-43-
Hide quick links:
Advertisement
Table of Contents
