LGE Internal Use Only
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor.
Check JK1604 , JK9901
CVBS Signal Line
R246 , R4016.
ok
ok
ok
No
Replace Jack.
ok
Check CVBS_DET Signal.
Replac e R9915 or R1666.
No
Check Mstar LVDS Output.
Replace Mstar(IC101) o r Main Board.
No
5. Component Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK1601 or 1603
Y/PB/ PR signal Line.
ok
ok
ok
No
Replace Jack.
Check COMP_DET Signal.
Replac e R1614, R4223 or R1615.
No
Check Mstar LVDS Output.
Replace Mstar(IC101) o r Main Board.
ok
No
Summary of Contents for 42LK450
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