Only For Training And Service Purposes - LG 19lg3000 Service Manual

AV, S-video signal
component PC signal
OK
Repair each relative circuit
5. 5. 5. 5. No No No Sound Sound
No Sound Sound
No sound
Check the source
OK
Check signal filter circuit
Check Earphone jack
OK
Check Amplifier TDA8932BTW U602
OK
Check speaker
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Only

Only for training and service purposes

Abnormal display
Check the source
OK
Check signal filter circuit
Check input signal
OK
Check LVDS cable
OK
Check panel
Reset source
NG
Replace the filter or inductance
NG
Replace the Earphone jack
SIF signal
AV, component, S-video, PC signal
NG
NG
Replace speaker
NG
Reset source
NG
Replace the filter or inductance
OK
RF signal
NG
Replace LVDS cable
NG
Replace panel
Check TV system setup
OK
Check TU201
Replace U602
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Check TV system setup
OK
Check TU201
OK
Replace TU201
NG
Replace TU201
NG
Check relative circuit
LGE Internal Use