LG KS660 - Page 70

- 71 -
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
START
18pin IO(CN301)
Is soldered ?
Source pin
of U200 = 4.8V ?
Output pin
of U200 =4.2V?
Resolder the
CN301
Battery voltage
is over 3.4V?
Charge is operating
The TA can be
broken
Change other TA
then retest
Check solder
U200 or replace it
Waiting until
battery
Voltage goes up
to 3.4V
Yes
Yes
Yes
Yes
No
No
No
No
18pin IO(CN301)
C319
TP1: Source pin
U200
TP2: Output pin