LG KF350 Service Manual page 68

START
18pin IO(CN100)
Is soldered ?
Yes
Source pin
of U204 =
4.8V ?
Yes
Output pin
of U204 =4.2V?
Yes
Battery voltage
is over 3.4V?
Yes
Battery thermistor
value
is about 10K?
Yes
Charge is operating
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Only for training and service purposes
No Resolder the
CN100
The TA can be
No
broken
Change other TA
then retest
Check solder
No
U204 or replace it
Waiting until
battery
No
Voltage goes up
to 3.4V
Change the
No
Battery
retest
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4. TROUBLE SHOOTING
18pin IO(CN100)
TP1: Source pin
U204
TP2: Output pin
LGE Internal Use Only
U204