Filter
Top Products
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
- 68 -
START
Check
ìPWRONî signal of
TP1
2.0V
Check R112 when
push the power key
Check
ìPWRONî signal of
TP1
0V
Check the
BACKUP Battery
Check solder R112
or
Replace Dome Switch
(PWR key)
Check solder
Q201
Yes
Yes
Yes
Yes
No
No
No
No
Connect power
supply to the DUT
Vbat = over 3.35V
Check the all LDOís
output
Is it correct?
Check solder whole LDO
parts or replace it
Q201
TP1
PWR key
Replace main PCB
Is the 26MHz
clock from TP2
X100 of U102 ?
Check solder
Replace X-TA
L
No
X100
TP2