LG Prada KE850 Service Manual page 79

5. Trouble shooting
START
18pin IO(CN102)
Is soldered ?
Yes
Source pin
of Q203=
4.8V ?
Yes
Drain pin
of Q203 =
4.7~4.8V ?
Yes
D201 voltage
drop
is near 0.3V ?
Yes
Battery voltage
is over 3.4V?
Yes
Battery
thermistor value
is about 10K?
Yes
Charge is operating
properly
- 80 -
No
Resolder the
CN102
The TA can be
No
broken
Change other TA
then retest
No
Check solder
Q203 or replace it
No
Replace it
No
Waiting until
battery
Voltage goes up
to 3.4V
No
Change the
Battery
retest