LG GD310 Service Manual page 117

8. CIRCUIT DIAGRAM
12 11
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PMIC
J
1V8_SD
2V5_VAUDA
I
C241
2.2uF
H
C224 C218
22uF 2.2uF
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F
E
D
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B
A
12 11
LGE Internal Use Only
10 9 8
R223
RTC_OUT ON_OFF2
27K
VUSB VBAT VBAT
2V62_VIO
1V35_VPLL
VBAT 2V62_VIO VBAT
VBAT
R209
100K
USB_OEN
USB_DAT_VP
USB_SE0_VM
TXON_PA
2V5_VAUDB VBAT
VBAT
2V9_VFM
U_RCV B1
RCV
U_PMIN C2
VPIN
U_VMIN D3
VMIN
C1
USB_DP D+
D2
USB_DM D-
TP3
E3
PMRSTN RESET_N
D1
RESET2_N
E2
VCXO_EN SLEEP1_N
E1
BT_VCXO_EN SLEEP2_N
F2
VAUDIOA
F1
VDDAUDIOA U201
G2
VDDAUDIOB
G1
PMB6821
VAUDIOB
H2
VAUX
H1
VDDAUX
C214 C217
J1
2.2uF 1UF
SU1_GATE
D200 L200 J2
SU1_GND
KDS160E 10UH H3
SU1_FB
J3
SU1_ISENSE
K1
VDDSD2
K2
SD2_FB
L2
SD2_FBL
C204
100n C227
C212 C232 C208
10uF 2.2uF 0.1uF 2.2u
Power On
2V11_RTC
RPWRON_EN
R205 END_KEY_IN
130K
R202
2K
KEY_ROW0
RPWRON 3 PWRON
R227
2 Q201
END_KEY
R225 10K KTC4075E 3
END_KEY_IN Q200
130K 1 2
KTC4075E
1
R228
100k KEY_COL2
EXTERNAL RESET
Battery Connector
2V62_VIO 2V11_RTC
R207
100K
U202
7 8
EXTRSTN A1 VCC
6 1
SPOWER_INT B1 Y1 PM_INT
5 2
_RESET Y2 B2 PMRSTN ENZY0022901
4 3
GND A2
C248
NC7WZ08L8X 100n
10 9 8
7 6 5
R214
RPWRON_EN
0R
VBAT
C252
1u
C219
100n
L201
10UH 1V35_CORE 2V8_CAM_A 2V85_VRF 1V5_VRF 2V9_VMME
VBAT 2V85_CAM 2V11_RTC 2V9_SIM 2V65_VBT 1V8_SD
C11
VMME
C10
VDDMME
D10
VDDRF2
D11
VRF2
E10
VRF3
E11
VDDRF13_AFC
F10
VRF1
F11
VVIB
G11
VDDSIMVIB
G10
VSIM
H11
VAFC
H10
VRTC
H9
VDDUMTS
J11
VUMTS
FB201
K11
VDDSD1
J10
SD1_FB
L10
SD1_FBL
C202 C253 C229 C254 C244 C228 C251 C257 C201 C242 C223
10U 2.2U 1U 1U 1U
2.2U 2.2U 2.2U 2.2U 2.2U 2.2U
VBAT
MMC_DETECT
CN200
R208
BAT_ID
D1 1K
1
2
3
D2
C216 C226 C240 C220 C221
100P 3p 27P 47P 2.2U
7 6 5
- 118 -
4 3 2 1
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
VBAT VBAT
R240 R241
0 0
C249 C225 C230
2.2U 1U 2.2U
A4
C258 C1N
1U
A5 A1
C1P HPR HSO_R
A2
HSO_L
C247 1U HPL
D1
BB_SND_R INA2
C238 1U D2 U200
BB_SND_L INA1
MAX9877AEWP_TG45
C255 1U C1
FM_SND_R INB2
C231 1U C2 D5
FM_SND_L SPK_RCV_P
INB1 OUT+
B2 B5
BIAS OUT- SPK_RCV_N
B3
C200 SDA SDA
C3
1U SCL
SCL
D4
RXIN+
B4 C259 C211
RXIN-
27P 27P
R211 2.2
EAR_P
R218 2.2
EAR_N R235
0
SIM & uSD Connector
2V62_VIO 2V9_VMME 2V9_SIM
R219
4.7K SIM_RST
R204 R220 R224 R221 R206 R201 C210 SIM_CLK
100K 100K 100K 100K 100K 100K 1U
SIM_IO
C246 C239 C245 C234
100n 27P 10P DNI
S8
10
MMC_D[1] T8
9
MMC_D[0] T7
8
T6
7
MMC_CLK T5
6
T4 CN201
5
MMC_CMD T3
4
MMC_D[3] T2
3
MMC_D[2]
T1
2
S4
1
ST1
R226 17
47 ST2
18
C206 C207
1N DNI
4 3 2 1
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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