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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6. Trouble shooting
- 89 -
No
START
18pin IO(CN302)
Is soldered ?
Source pin of
TP1
FL302 =
5.1V ?
Resolder the
CN302
The TA can be
broken
Change other TA
then retest
Yes
No
No
18pin
Output pin
TP2
R104=4.2V?
Check solder
R104
Yes
Yes
Yes
Battery voltage
is over 3.35V?
No
charging until
battery
Voltage goes up to
3.35V
TP
TP1
TP
TP2
Charge is operating properly
Yes
Summary of Contents for KC550
Page 1: ...Date May 2008 Issue 1 0 Service Manual Model KC550 Service Manual KC550 Internal Use Only ...
Page 182: ...Note ...
Page 183: ...Note ...