LG PRADA KE850 - Page 79

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