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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
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LGE Property
4.2 Power on Trouble
Check Points
-Battery Voltage( Need to over 3.35V)
-Power-On Key detection (PWRON signal)
-Outputs of LDOs from PMIC
TP
TP2
z
TP3
K2
20
2
R
10K
R203
Q201
1
2
3
Q202
1
2
3
40
2
R
K0
01
05
20
S5
CL
V
E
10
2
A
V
SIDEKEY_3P
CN202
3
2
1
VBAT
2V0_VRTC
KEY_ROW5
KEY_COL7
PWR_LOCK_KEY
PWR_LOCK_KEY
PWR_KEY_IN
PWR_KEY_IN
PWRON
Power On
Power & Lock
TP1
R101
DNI
R102
DNI
U101
NC7WZ08L8X_F113
EUSY0102803
3
4
2
5
1
6
8
7
A1
VCC
B1
Y1
Y2
B2
GND
A2
100K
R103
0.1uF
C101
2V0_VRTC
_RESET
SPOWER_INT
_PMRST
PM_INT
_EXTRST
2V62_VIO
External Reset JIG Connector
TP
TP2
Содержание GT350
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