Lge Internal Use Only - LG -S367 Service Manual

CHECKING FLOW
START
Check the
TP1 is LOW?
Plug 3.5phi
Check the
TP1 is High?
YES
Can you hear
the sound from
the earphone?
YES
Set the audio part of the test
Equipment to echo mode
Can you hear your
voice from
the earphone?
Earphone will work properly

LGE Internal Use Only

NO
Resolder TP2
Check the
TP1 is LOW?
YES
NO
Change the earphone
and try again
NO
Change the earphone
and try again
NO
NO
Resolder TP3
Check the
TP1 is High?
YES
Can you hear
the sound from
the earphone?
YES
Can you hear your
voice from
the earphone?
YES
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4. TROUBLE SHOOTING
NO
Change PCB
For Sound
NO
Resolder TP4,TP5, TP6
For MIC
Resolder TP7, TP8, TP9
NO
Resolder IC200,
TP10, TP11,
TP12, TP13
Only for training and service purposes