LG GB220 Service Manual page 118

7. CIRCUIT DIAGRAM
1 2
A
ANT400 ANT402
ANT401
R404
L400 VLOGIC
TX_RAMP
NA 1
B
C407
DNI
L411
2.2nH
L401
10nH
SW400
Changed From KMS512 080812 Jeno
GRS302-2S-H22-E3000
ENWY0006301
R414
C
NA
L408
D
E
1 2
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3 4
RF part
R402 110
R403 1K
R405 110
TX_EN
R406 110
BS1
R408 110
BS2
VBAT
C408 C409 C410 C411 C412
1000p 1000p 1000p 39p 1000p
33
PGND3
32
PGND2
31
PGND1
10 1
U400
GND5 GND1
11 SKY77531 30
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
PGND6
35
PGND5
34
PGND4
1
C425
RX_BAND SWAPPED
DNI C426
C_GND2 C_GND4
3 10
C_GND1 C_GND3
6.8p
2 5
INPUT2 GND1
4 6
GND2
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
GND2
7
OUTPUT1
8
INPUT1 OUTPUT2
1 9 C429
FL402 B9508
SFSB0002302
2.7p
3 4
5 6 7
C413
C416 C417
22u
0.01u 33p
(2012)
L402
L403
3.3nH
3.3nH
C430 FL400
LFB212G45SG8A166
DCS_PCS_OUT 0.75p
IN OUT
GSM_OUT GND1 GND2
L405
SFCY0000901
2.2nH
C420 C419
DNI 2p
C421 C422
1p 1p
C423
CLK32K
C424
1nH 1nH
BT_CLK
L406 L407
DBB_BT_INT
BT_DBB_INT
FSYS_EN
R417 R418
RX12X
100K 100K
L409
15nH
RX12
RX34X
L410
3.9nH
RX34
5 6 7
- 119 -
8 9 10
BLUETOOTH
VAUX 1V81_VDD
R400 R401
0 0
FB400
C400 0.01u
C401 10p
C403 C404 R407
C402 0.01u
0
2.2u 0.01u
C405 2.2u
C406 0.01u
C414 C415
R409
DNI 10p 1u
R411
15K
C418
1000p
G4
RES
D1 B4
RFP RST_N
B2
REG_EN
F7 C4
SCL TM0 R413 0
E7 F3
SDA TM2
A8 F6 PCM_TX
SPIM_CLK PCM_IN
C7 G6 PCM_RX
SPIM_CS_N PCM_OUT
F4 PCM_CLK
U401
PCM_CLK
1000p
A4 F5 PCM_SYNC
LPO_IN PCM_SYNC
BCM2070
1000p
G2 C8 BT_RXD
XIN UART_TXD
G3 D8 BT_TXD
XOUT UART_RXD
D7 BT_CTS
UART_RTS_N
B5 E8 BT_RTS
GPIO_0 UART_CTS_N
B3
GPIO_1
R415 R416
E6 DNI DNI
TCXO_OR_OUT_GPIO_5
E3
TCXO_OR_IN_GPIO_6
B7
R419
GPIO_7
100K
R420
0
A
A
nBT_RESET
1V81_VDD
PCM_TX
PCM_RX
PCM_CLK
PCM_SYNC
C
BT_RXD
BT_TXD
BT_CTS
BT_RTS
1V81_VDD
D
LGE Internal Use Only