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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
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Resolder J201 (
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
NO
Can you hear
the sound from
the earphone?
YES
Can you
NO
hear your voice
From the
earphone?
YES
- 9 -
4. TROUBLE SHOOTING
NO
Resolder J201
Resolder
L203,L204,FB204,
FB205, C245,C246
Resolder
FB203,R226,R218,
C238,C256,C240,
C241, C242
Or change the
U202(amp),
U102(BB IC)
LGE Internal Use Only
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