LG CG225 Service Manual page 73

4. TROUBLE SHOOTING
START
Does
the Audio profile chan ge
to the e arphon e
mode?
Can you
hear the sound
from the
earphon e?
Yes
2. Send ing Pat h problem
Insert the earphone
into the headset.
No
1. Earpho ne detecti on problem
Set the audio part of test
equipment to PRBS or
continuous wave mode
No
C254,L201,C255
of
and L202
Soldering of CN201
The earphone is O K?
The ABB is out of order.
Change th e board.
- 72 -
cf) PRBS : Pse udo Ran dom Bit Sequence
Soldering
No
is O K?
Yes
No
is O K?
Yes
No
Yes
Re_sold er the
C254,L201,C255
and L202
Re_sold er the
CN201
Change the
Earphone.