42LG60 (CHASSIS:LA84B) - LG TV Service Manual (repair manual). Page 27

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- 27 -
C
2008
Check input c
onnect JK600,
JK601,JK602,JK708
Can y
ou see t
h
e n
o
rmal 
w
a
v
e
form?
Check DDC commu
nication lines
(IC601, IC602,I
C603, IC701)
JK60
0,JK6
01,
JK70
8 ma
y
 h
a
v
e
 p
roblem. R
e
place th
is Jack.
Check the output of
 PI3HDMI341
A
T
R(IC600)_HDMI1/2/3
or TMDS141H
A
R
(I
C703)_H
D
M
I4. 
Can y
o
u see t
h
e n
o
rmal 
w
a
v
e
form?
A
ft
e
r checking the Po
w
e
of this chip, y
ou should 
decide to 
replace this or not.
Check HD
CP co
mmunicatio
n lin
es(IC102)
A
ft
e
r checking the Po
w
e
of this chip, y
ou should 
decide to replace this or not.
YES
YES
YES
NO
NO
NO
NO
A
ft
e
r checking the Po
w
e
r &
 Select Pin
 & 
Etc of this 
chip, y
o
u should 
decide 
to replace this or not.
HDMI
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