LG GU280 Service Manual page 109

7. CIRCUIT DIAGRAM
16 15
SMPS Circuit
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VREG_MSMC_1.2V
K
VREG_RF1_2.3V
VREG_RF2_1.4V
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R203
VREG_RFRX2_1.3V
G
0
L207
L201
R205
L205
VREG_RFTX2_1.3V
R201
0
1
F
VREG_RFA_2.2V
VBACK_UP
VBUS
E
C210 C255
4.7u 4.7u
D
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B
A
16 15
LGE Internal Use Only
14 13 12 11 10
L206 4.7u
VSW_MSMC 32.768KHz
C235
DNI
C203
10u
L204 4.7u
VSW_RF1
VREG_RF1_2.3V|VREG_RF1
C217
10u
L203 4.7u
VSW_RF2
VREG_RF2_1.4V|VREG_RF2
C259
10u
F23
GLNA_HB_IN_M RX_IN_G_HBM
G23
GLNA_HB_IN_P RX_IN_G_HBP
H22
GLNA_LB_IN_M RX_IN_G_LBM
J22
GLNA_LB_IN_P
RX_IN_G_LBP
H23
WLNA_HB1_IN_M RX_IN_U_G_HB1M
J23
WLNA_HB1_IN_P RX_IN_U_G_HB1P
K23
WLNA_HB2_IN_M
RX_IN_U_HB2M
L23
WLNA_HB2_IN_P RX_IN_U_HB2P
K22
WLNA_LB_IN_M RX_IN_U_G_LBM
L22
WLNA_LB_IN_P RX_IN_U_G_LBP
A21
WCDMA_1900_TX_OUT TX_OUT_U_HB1
A20
WCDMA_2100_TX_OUT TX_OUT_U_HB2
A19
WCDMA_900_TX_OUT TX_OUT_U_LB
A22
TX_GSM_HB TX_OUT_G_HB
B23
TX_GSM_LB
TX_OUT_G_LB
C23
PWR_DET PWR_DET_IN
A18
GSM_PA_RAMP PA_DAC
C230 100n
B18
TX_DAC_REF_BYP
L202 27n
K19
VDD_RFRX1 QSC6240_DATA,QSC6240_POWER
G21
VDD_RFRX2
K21
VDD_RFRX3
G19
VDD_RFRX4
J19
VDD_RFRX5
27n
K18
VDD_RFRX6
H19
VDD_RFRX7
D22
VDD_RFTX1
D23
15n VDD_RFTX2
E18
VDD_RFTX3
C19
VDD_RFTX4
D21
VDD_RFTX5
C18
VDD_RFTX6
H18
VDD_RFA1
C20
VDD_RFA2
N18
VDD_RFA3
T18
VDD_RFA4
R23
VDD_RFA5
M18
VREG_CDC2
R19
HPH_VNEG
AA18
VCOIN
AB7
USB_VBUS
AA14
VCHG1
AB14
VCHG2
AA13
VPH_PWR1
AB13
+VPWR VPH_PWR2
W12
BATT_FET_N BAT_FET_N
AB12
VBATT VBAT
TP for UART calibration close to QSC
C206
+VPWR
33u
S2 S1
BATT_FET_N
Q201 G
SIA411DJ
D5 D4 D3 D2 D1
VBATT
OJ201 OJ203 OJ205 OJ206
HOLE HOLE HOLE HOLE
14 13 12 11 10
9 8 7 6
X201
FC-255
C225
DNI
C260 C220
1u 100n
V15
VREG_USB_2P6
V14
VREG_USB_3P3
V13
VDD_EFUSE
A12
PMIC control VDD_P5
A6
VDD_P2_1
A9
VDD_P2_2
G3
VDD_P1_1
J3
VDD_P1_2
L3
VDD_P1_3
N3
VDD_P1_4
Digital POWER R3
VDD_P1_5
A15
VDD_P6
A1
VDD_CORE1
B2
VDD_CORE2
C3
VDD_CORE3
K10
VDD_CORE4
K11
VDD_CORE5
K12
VDD_CORE6
K13
U201 VDD_CORE7
L10
VDD_CORE8
L11
VDD_CORE9
L12
VDD_CORE10
L13
VDD_CORE11
U1
VDD_CORE12
U2
VDD_CORE13
C240 100n
T13 C205 2.2u
VREG_MPLL
V16
PMIC POWER VDD_USB
AC14
VDD_RF1
VDD_RF1
AA17
VDD_RX2_TX2
AA16
VDD_PLL_CDC
AA20
VDD_NCP VDD_NCP
AC16
VDD_RF2 VDD_RF2
AC21
VDD_SPKR
U21
VDD_TCXO
AA12
VDD_PAD_SIM
AA15
VDD_EBI_RFA
AA19
VDD_MSMC VDD_MSMC
AC15
VSW_RF1 VSW_RF1
AB15
VREG_RF1 VREG_RF1
AC17
VSW_RF2 VSW_RF2
AB17
VREG_RF2 VREG_RF2
AC18
VSW_MSMC VSW_MSMC
W16
VREG_RFA
AB18
NCP_CTC1
AB19
NCP_CTC2
AC20
VREG_NCP
AC12
VSW_5V
AC11
VREG_5V
W21
VREG_RFRX2
V21
VREG_RFTX2
W13
VREG_MSMP
AA22
VREG_GP1
W15
VREG_MSME
U22
VREG_TCXO
Y22
VREG_GP2
W14
VREG_USIM
UNDER INVESTIGATION ABOUT CURRENT CONSUMPTION
SPEAKER GROUND
9 8 7 6
- 110 -
5 4 3 2 1
VREG_MSME_1.8V
VREG_MSMP_2.6V
VREG_MSMC_1.2V
+VPWR
VREG_RF2_1.4V
VREG_RF1_2.3V
VREG_RFA_2.2V
VREG_RFRX2_1.3V
VREG_RFTX2_1.3V
VREG_MSMP_2.6V
VREG_GP1_1.5V
VREG_MSME_1.8V
VREG_TCXO_2.85V
VREG_MICROSD_3.0V
VREG_USIM_2.85V
5 4 3 2 1
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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