Only For Training And Service Purposes - LG KG290 Service Manual

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Checking Flow
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

START
24pin MMI(CN301)
Is soldered ?
Yes
CRDL pin
of U102= 5.1V ?
Yes
"CHG_EN" signal
goes to low?
Yes
Battery voltage is
over 3.4V?
Yes
Battery thermistor
value
is about 10K?
Yes
Charge is operating properly
- 71 -
4. TROUBLE SHOOTING
No
Re- solder the CN200
No
The TA can be broken
Change other TA
then retest
No
Check solder
U102 or replace it
No
Waiting until battery
Voltage goes up to 3.4V
No
Change the Battery
retest
LGE Internal Use Only

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