LG ID2750, Руководство по обслуживанию

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Checking Flow
START
Does the audio
Profile of the phone change to
the earphone mode?
Can you hear your voice
from the earphone?
Earphone will
work properly
Insert the earphone to the handset.
Change the earphone and
try again.
No
No
Yes
Yes
Set the audio part of the test
equipment to echo mode
Earphone detect problem
Audio path problem
Can you hear your voice
from the earphone?
Change Earphone.
Set the audio part of the
test equipment to
continuous wave mode
Earphone receiving
Path problem
Can you hear the sound
from the earphone?
Earphone sending
path problem
1
4
2
3
Yes
No
Yes
No
Earphone receiving path problem
2
Level of C430
is about 1.2V
Check soldering of
Pin 3 of CON401
Change
main board
Download
S/W
Re-soldering of
Pin 3 of CON401
Yes
Yes
No
Yes
No
Yes
Yes
Yes
SETTING : After initialize 5515C, Test US Cellular
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