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VX9700
START
Insert 4pole headset to 4pole ear-jack
Can you hear the DTMF
TONE or any sound?
Set the audio part of the test equipment
to echo mode " ##service
Can you hear your
voice from headset ?
Headset will work properly
LG Electronics Inc.
YES
NO
YES
3.Audio Test "
YES
NO
NO
YES
NO
Checking Flow
Checking Flow
Change headset
and try again
Can you hear your
voice from headset ?
YES
Set the audio part of the test
equipment to MIDI test mode
"##service
4.MIDI test
Can you hear the
Sound from headset ?
YES
: Headset detect
1
problem
: Headset receiving
2
NO
path problem
: Headset sending
3
path problem
4
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