LG -T500 Service Manual page 73

CIRCUIT
RF SUPPLIES (CLEAN GND)
VDDTRX VDDRF2
PIN_B16 PIN_G15
C209 C210 C211
1u 18p 220n
VDD_IO_1V8
L201
3.3u
VDD_IO_1V8
22u
C222
VBAT
VDD_IO_1V8
VBAT
C223 10u
LGE Internal Use Only
RF SUPPLIES (DIRTY GND)
VBAT
VBAT_RF2
VDDXO
PIN_G16
PIN_E13
FB201
75
C212
C219
C220
4.7n
1u 470n
(10V)
ABB SUPPLIES
VBATSP
VDD1V8CP
Speaker Supply
VDD_IO_1V8
PIN P16
C201
0.1u
VDD_IO_1V8
VPMU
RF_TX_RAMP
VDD_IO_1V8
VDD_IO_1V8 VDD_IO_1V8 VCORE VDD_IO_1V8
Figure 4.2 Power block of T500
VDD_IO_1V8
VDDTDC VDDMS VRF1
PIN_B14 PIN_H15 PIN_H12
Seperate and shield
C213 C214 C215
47n 47n 1u
VRF1|VDD_IO_1V8
PMU SUPPLIES
VBAT_PMU
VBAT VPMU VPA_2V85 VMMC_2V85
PIN N10 PIN P12 PIN P10
C203 C204 C205
2.2u 0.1u 470n
(10V)
VBAT_RF2 VPA_2V85
VDDMS VDDXO VDDTDC VMMC_2V85 VUSB
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4. TROUBLE SHOOTING
DBB SUPPLIES
VDD_IO1 VDD_IO2
VDD_IO_1V8 VDD_IO_1V8
PIN G11 PIN K9
C216 C217
1u 0.1u
VUSB VCORE
PIN L9 PIN M11 PIN K10
C206 C207 C208
470n 0.1u 220n
VBACKUP_BAT
R203
470
R204
C224
3.9K
0.1u
3
Q201 2
R207
VBAT
1
VDDRF2 VRF1
100K
R208
5.6K
Only for training and service purposes
VDD_EBU
VDD_IO_1V8
PIN F6,P6
C218
0.1u
VUSB_LDO_4V9
(1%)