Read LG 52LG50DC-UA (CHASSIS:LA84Z) Service Manual online
- 23 -
C
2008
7. A
V/COMPONENT/RGB_PC-AUDIO(IN)
Check JK705, JK701, JK700,
JK702, JK704.
Can
you se
e the normal
w
a
vef
orm?
NO
JK701, JK705, JK700, JK702, JK703 may have problem. Replace this
Jack
.
Check the in
put (Pin AIN6A,
AIN6B,AIN1A,AIN1B
,
AI
N
3
A,
AI
N
3
B,
AIN
4
A,A
IN
4
B,A
IN2A
,A
IN2B
) of CS5345(IC
500).
Can
you se
e the normal
w
a
vef
orm?
NO
YES
After checking audio signal line,
y
ou should decide to replac
e
item or not.
YES
Check the Output (Pin SDOU
T,SCLK,LRCK)
of CS5345(IC
500).
Can
you se
e the normal
w
a
vef
orm?
NO
After checking
the Po
w
e
r & MLCK & reset of this chip,
yo
u shou
ld dec
ide to repl
ace this or not.
YES
Check the in
put (Pin AH24,AJ24,AK24) of BCM355
3((IC100).
Measure
w
a
vef
orm at R554,R
561,R555 bec
ause itís more e
a
s
y
to check.
Can
you se
e the normal
w
a
vef
orm?
NO
After checking audio signal line,
y
ou should decide to replac
e
item or not.
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