LG GT350 - Power on Trouble

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Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
LG Electronics 61/115 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
K
2
2
0
2
R
10KR203
Q201
1
2
3
Q202
1
2
3
4
0
2R
K0
0
1
05
2
0S
5C
LVE
102AV
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
PWRO
N
Power On
Power & Lock
TP1
R101 DNI
R102 DNI
U101
NC7WZ08L8X_F113
EUSY0102803
34
25
16
87
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
TP3
TP2