LG KG290 - Page 70

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4. TROUBLE SHOOTING
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START
24pin MMI(CN301)
Is soldered ?
CRDL pin
of U102= 5.1V ?
"CHG_EN" signal
goes to low?
Re- solder the CN200
Battery voltage is
over 3.4V?
Charge is operating properly
The TA can be broken
Change other TA
then retest
Check solder
U102 or replace it
Waiting until battery
Voltage goes up to 3.4V
Yes
Yes
Yes
Yes
No
No
No
No
Battery thermistor
value
is about 10K?
Change the Battery
retest
No
Yes
Checking Flow