- 110 -
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. Trouble Shooting
START
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Insert Headset.
Does the Headset icon
display on the main LCD?
Can you hear sine wave
out of the receiver ?
END
YES
YES
NO
NO
NO
Does the sine wave appear
at C462(
TP3
),C463(
TP4
) ?
Resolder CN601 Pins
or change the Headset
Does the sine wave appear
at C464(
TP1
),C465(
TP2
) ?
1
YES
Change the main B,d
YES
NO
Does the sine wave appear
at FB602(
TP6)
, FB603(
TP7)
?
NO
4.9.4 Headset Receiver (Voice call, Video Telephony, MP3 )
Change the main B,d
Change the main B,d
Change the main B,d
change the Headset
or the main B’d
1
2