LG GB220 Service Manual page 117

7. CIRCUIT DIAGRAM
1 2
A
ANT400 ANT402
ANT401
R404
L400 VLOGIC
TX_RAMP
NA 1
TX_EN
BS1
BS2
B
C407
DNI
L411
2.2nH
L401
10nH
SW400
Changed From KMS512 080812 Jeno
GRS302-2S-H22-E3000
ENWY0006301
C R414
1
NA
L408
D
E
1 2
LGE Internal Use Only
3 4 5
RF part
R402 110
R403 1K
R405 110
R406 110
R408 110
VBAT
C408 C409 C410 C411 C412
1000p 1000p 1000p 39p 1000p
C416
0.01u
33
PGND3
32
PGND2
31
PGND1
10 1
U400 L402
GND5 GND1
11 SKY77531 30 3.3nH
RX1 VBATT
12 SMRH0005201 29
RX2 DCS_PCS_IN
13 28
RX3 GND17
L404
14 27
RX4 GSM_IN
15 26 2.2nH
GND6 GND16
16 25
GND7 GND15
36
C421
PGND6
35 1p
PGND5
34
PGND4
1nH
L406
C425
RX_BAND SWAPPED
C426
DNI
C_GND2 C_GND4
3 10
C_GND1 C_GND3 6.8p
2 5
INPUT2 GND1
L409
4 6
GND2 15nH
7
OUTPUT1
8
INPUT1 OUTPUT2
1 9
C427
FL401 B9509
SFSB0002301
6.8p
RX_BAND SWAPPED
C428
C_GND2 C_GND4
3 10
C_GND1 C_GND3 2.7p
2 5
INPUT2 GND1
4 6 L410
GND2
7 3.9nH
OUTPUT1
8
INPUT1 OUTPUT2
1 9 C429
FL402 B9508
SFSB0002302
2.7p
3 4 5
6 7
R400
C403
2.2u
C413
C417
22u
33p
(2012)
R411
15K
L403
3.3nH
C430 FL400
LFB212G45SG8A166
DCS_PCS_OUT 0.75p
IN OUT
GSM_OUT GND1 GND2
L405
SFCY0000901
2.2nH
C420 C419
DNI 2p
C422
1p
C423 1000p
CLK32K
C424 1000p
1nH
BT_CLK
L407
DBB_BT_INT
BT_DBB_INT
FSYS_EN
R417 R418 R419
RX12X
100K 100K 100K
RX12
RX34X
RX34
6 7
- 118 -
8 9 10
BLUETOOTH
VAUX 1V81_VDD
R401
0
0
FB400
C400 0.01u
C401 10p
R407
C404
C402 0.01u
0
0.01u
C405 2.2u
C406 0.01u
C414 C415
R409
DNI 10p 1u
C418
1000p
G4
RES
D1 B4
RFP RST_N nBT_RESET
B2
REG_EN 1V81_VDD
F7 C4
SCL TM0 R413 0
E7 F3
SDA TM2
A8 F6 PCM_TX
SPIM_CLK PCM_IN PCM_TX
C7 G6 PCM_RX
SPIM_CS_N PCM_OUT PCM_RX
U401 F4 PCM_CLK
PCM_CLK PCM_CLK
A4 F5 PCM_SYNC
LPO_IN PCM_SYNC PCM_SYNC
BCM2070
G2 C8
BT_RXD
XIN UART_TXD BT_RXD
G3 D8
BT_TXD
XOUT UART_RXD BT_TXD
D7
BT_CTS
UART_RTS_N BT_CTS
B5 E8
BT_RTS
GPIO_0 UART_CTS_N BT_RTS
B3
GPIO_1
R415 R416
E6
DNI DNI
TCXO_OR_OUT_GPIO_5
E3
TCXO_OR_IN_GPIO_6
B7
GPIO_7 1V81_VDD
R420
0
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A
A
C
D