LG VX8500 Service Manual page 106

VX8500
Headset detect problem
Level of pin2 of
CON403 Is
1.65V~2.1V=?
YES
Check soldering of
YES
Level of EAR_JACK_SENSE/
YES
LG Electronics Inc.
Headset detect
problem
1
NO
YES
NO
U403
NO
is Low?
4
114
Check soldering of
R406
Re-solder U403
Download SW
NO
Re-solder R406