LG KP500 - Power on Trouble

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5. Trouble shooting
5.2 Power on Trouble
Check Points
- Battery Voltage( Need to over 3.35V)
- Power-On Key detection (PWRON signal)
- Outputs of LDOs from PMIC
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Only for training and service purposes
Power On
R
TC_
2
V11
K2
5
1
2
R
412R
K2
3
1
4
2
5
6
U203
E
MX18
EQBN001
3
701
3
1
2
R
K033
7
1
2
R
M3.3
K
0
01
0
2
2
R
u
01
1
32C
N
E_NORWP
R
N
O
RWPR
N
O
RWP
N
I_Y
E
K
_
DN
E
E
x
t
erna
l Res
e
t
u
1
.
0
2
3
2
C
K
0
0
1
612R
U
204
7
1A
3
2A
6
1
B
2
2
B
4
DN
G
8
CC
V
1
1
Y
5
2Y
V
I
O_2V
6
2
E
U
SY
0
102802
N
C
7WZ
0
8
L8X
R
T
C
_
2
V
11
n
T
SR
T
XE
T
NI_
R
EWO
P
S TNI_M
P
nTSR
M
PTESER_
TP1
TP2