LG 42LK450 Service Manual page 70

Trouble shooting guide
11. AV Audio
Check AV Cable for damage
for damage or open conductor
ok
Check JK1604 , JK9001
& Signal Line
ok
Follow procedure
'8. All source audio'
trouble shooting guide.
12. Component Audio
Check Component Cable
for damage or open conductor.
ok
Check JK1601, JK1603
& Signal Line
ok
Follow procedure
'8. All source audio'
trouble shooting guide.
13. RGB Audio
Check Cable conductors
for damage or open conductor
ok
Check JK1104 & Signal Line
ok
Follow procedure
'8. All source audio'
trouble shooting guide.
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Only for training and service purposes
No
Replace Jack
No
Replace Jack
No
Replace Jack
LGE Internal Use Only