Read LG 52LG70-UA (CHASSIS:LA86A) Service Manual online
- 26 -
C
2008
A
V/Component/RGB-PC
Audio(In)
Check JK701, JK707, JK700,
JK702, JK703.
Can
you se
e the normal
w
a
vef
orm?
NO
JK701, JK707, JK700, JK702, JK703 may ha
ve problem. Replace this
Jack
.
Check the in
put (Pin AIN6A,
AIN6B,AIN1A,AIN1B,
AIN3A,AIN3B,AIN4A,AIN4B,AIN2A,AIN2B) of CS5345(IC
500).
Can
you se
e the normal
w
a
vef
orm?
NO
YES
After checking audio signal line,
y
ou sh
ould 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 its more e
as
y
to check.
Can
you se
e the normal
w
a
vef
orm?
NO
After checking audio signal line,
y
ou sh
ould decide to replac
e
item or not.
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