LG KF600w Service Manual page 106

START
Insert 4pole headset to 4pole earjack
YES
Does the audio profile of
the phone change to the headset
Mode?
YES
Set the audio part of the test equipment
to echo mode
YES
Can you hear your
voice from headset ?
YES
Headset will work properly
Checking Flow
Checking Flow
NO
NO
Change headset
and try again
NO
Can you hear your
voice from headset ?
NO
YES
Set the audio part of the test
equipment to continuous wave mode
Can you hear the
Sound from headset ?
YES
1
: Headset detect
problem
2
: Headset receiving
NO
path problem
3
: Headset sending
path problem
4