52LG50DC-UA (CHASSIS:LA84Z) - LG TV Service Manual (repair manual). Page 24

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- 24 -
C
2008
8. HDMI-AUDIO(IN)
Check input connect JK600,J
K601
Can 
you se
e the normal 
w
a
vef
orm?
Check DDC communication lines
(IC601, IC602)
JK600,JK601 may
 have problem. Replace this Jack.
Check the outp
ut of PI3HDMI341AT
R(IC600)_HDMI1/2
Can 
you se
e the normal 
w
a
vef
orm?
After checking 
the Po
w
e
r of this chip, 
y
ou should decide to replac
e this or not.
Check HDCP communication lines(IC102)
After checking 
the Po
w
e
r of this chip, 
y
ou should decide to replac
e this or not.
YES
YES
YES
NO
NO
NO
NO
After checking 
the Po
w
e
r & Select Pin & Etc of this
 chip, 
y
o
u should decide to replace this or not.
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