Table of Contents
Advertisement
4.4 Power On Trouble
TEST POINT
2V85_VSIM
1V8_VCORE
2V8_VEXT
1V8_VRTC
CIRCUIT
INT
J8
RESET
K9
R106
3300
RESET2P8
J9
RESET1P8
V8
VGP
VUSB
VCORE
W8
VCOREOUT
W13
VMEMFB
V12
VMEMOUT
V11
VEXT_REG1
W11
VEXT_REG2
M19
VRF
V14
VSIM_A
W15
VRTC
U19
VMIC
T19
VUSB_A
W14
VGP
N18
C126
VABB_LDO
P18
2.2u
VAPP
C127
N19
VAPPGATE
1u
V17
PWREN
L14
VAPPCFG
U12
VMEMSEL
T11
VRTCSEL
T13
PMTSEL
E19
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
_RESET
2V5_VMIC
2V85_VSIM
2V75_VVCXO
2V8_VEXT
C132
C129
C130
C131
27p
1u
1u
1u
C128
1u
4. TROUBLE SHOOTING
Figure 4.4
2V8_VMEM
1V8_VCORE
1V8_VRTC
POWERKEY
C136
C133
C134
C135
0.1u
1u
1u
1u
- 51 -
2V8_VMEM
2V75_VVCXO
2V5_VMIC
VUSB
VGP
END
R302
680
END
LGE Internal Use Only
Advertisement
Table of Contents
