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CIRCUIT
RF SUPPLIES (CLEAN GND)
VDDTRX
VDDRF2
.
PIN_B14
PIN_G13
C130
C137
C136
1u
18p
220n
1V8_VDD
3.3u
L101
22u
C112
VBAT
C139
10u
LCD_ID
R111
56K
N12
R112
M0
100K
LGE Internal Use Only
RF SUPPLIES (DIRTY GND)
VBAT
VBAT_RF2
VDDXO
.
. . .
PIN_G14
PIN_E11
FB101
75
C128
C123
4.7n
470n
(10V)
PMU SUPPLIES
VBAT_PMU
VBAT
VPMU
VAUX
PIN N8
PIN P10
PIN P8
C106
C118
C126
2.2u
0.1u
470n
(10V)
. . .
TX_RAMP
1V8_VDD
VBAT
1V8_VDD
1V8_VDD VPMU
VCORE
1V8_VDD
1V8_VDD
Figure 4.2 Power block of LG-T315i
Figure 4.2 power block of T310i
4. TROUBLE SHOOTING
VRF1
VDDTDC
VDDMS
1V8_VDD
PIN_B12
PIN_H13
PIN_H10
.
Seperate and shield
C127
C125
C119
47n
47n
1u
ABB SUPPLIES
VDD1V8CP
VMMC
VUSB
VCORE
1V8_VDD
PIN L7
PIN M9
PIN K8
PIN P14
C134
C122
C116
C135
0.1u
470n
0.1u
220n
.
VDDMS
VDDXO
VDDTDC
VBAT_RF2
VAUX
VMMC
VUSB
VDDRF2
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Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
DBB SUPPLIES
VDD_IO1
VDD_IO2
VDD_EBU
1V8_VDD
1V8_VDD
1V8_VDD
R115
0
PIN G9
PIN K7
C133
C111
0.1u
0.1u
VBATSP
Speaker Supply
VBAT
PIN P16
C120
2.2u
(10V)
470
R114
R118
3.9K
3
Q101
2
100K
VRF1
VRTC
VBAT
1
R116
(1%)
5.6K
R119
Only for training and service purposes
PIN R5
C129
0.1u
LDO_OUT
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