LG LG511C Service Manual page 110

LN510
Headset receiving path problem
The voltage level of C4010,
1
C4011 is about 1.8V?
2 Check the soldering of Pin
Change main board
Headset detect problem
3 Level of pin5 of CON4003
Check the soldering of
LG Electronics Inc.
Yes
Yes
3,4 of CON4003
Yes
Yes
is Low state?
Yes
U4008,U4010
Yes
Level of
EAR_SENSE
Yes
NO
Download S/W
NO
Re-soldering of Pin 3,4 of CON4003
4
NO
Check the Soldering of
R4028,R4038
Yes
NO
NO
Download S/W
109/168
NO
Re-solder
R4028,R4038