Lge Internal Use Only - LG -T500 Service Manual

CHECKING FLOW
START
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

Resolder J501
(3.5 EAR-MIC con)
NO
Change the
earphone
and try again
NO
Change the
earphone
and try again
Can you
hear the sound from
The earphone?
YES
Set the audio part of the
test
equipment to PRBS or
Continuous wave mode
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
Resolder J501
NO
Resolder
FB501,FB502,
FB508,FB509,
C539,C540
(TP1~6)
Resolder
FB504,R508,R509,
NO
C520,C518,C521,
C522,C517,C519
Or change the
M501(amp),
U201(BB IC)
Only for training and service purposes