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5. Trouble shooting
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
START
ìPWRONî signal
Check 3 pin of U203
(High
Low)
ì_RESETî signal
Check 5 pin of U204
Check the all LDOís
output
Is it correct?
Replace main PCB
Check the
RPWRON,
replace U203
Check solder
U204 or replace it
Check solder
U300 or replace it
Check solder X600
or replace it
Check 1 pin of X600
Or Check C638 of U601
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Connect power
supply to the DUT
Vbat = over 3.35V
TP1
U203
TP2
U204
U300
U601
1 Pin X600
Is the 26MHz
clock From X600
signal correct?
C638 of U601
Содержание KP500
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