107
VX8350
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Headset receiving path problem
2
Re-solder R308
Replace U401
Download S/W
The voltage level of C405,
C406 is about 1.8V?
NO
Download S/W
Check the soldering of Pin
2,3 of CON301
Check the Soldering of
R308
Yes
Yes
Yes
NO
Change main board
Re-soldering of Pin 2,3 of CON301
NO
Headset detect problem
1
Headset receiving
Path problem
Headset detect
Problem
Level of pin4 of CON301
is 1.65~2.1V?
Check the soldering of
U401
Yes
Yes
Yes
NO
Level of
EAR_JACK_SENSE/
Yes
4
NO
NO
Yes
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