LG G5500 Manual page 77

START
Does
the Audio profile change
to the earphone
mode?
Can you
hear the sound
from the
earphone?
Yes
2. Sending Path problem
Insert the earphone
into the headset.
No
1. Earphone detection problem
Set the audio part of test
equipment to PRBS or
continuous wave mode
No
The earphone is OK?
The ABB is out of order.
-78-
cf) PRBS : Pseudo Random Bit Sequence
Soldering
of C319,L304,L306
is OK?
Yes
Soldering of J301
is OK?
Yes
Yes
Change the board.
No
Resolder the
C319,L304,L306
No
Resolder the
J301
No
Change the
Earphone.