LG GW620 - Page 117

- 118 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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Schematic of GSM/DCS/PCS Rx Block
n7.2
151C
0.5p
L17
0.5p
L8
18n
C380
L9
DNI
10n
L25
18n
L15
ANT4
ANTENNA_PAD
DNI
L29
180ohms
R54
4.7p
C330
2.2p
C271
10uF
C278
L12
0.082uH
C318
1n
1n
C316
39p
C326
R13 2.2K
100ohms
R63
4.7p
C329
5.6n
C350
VBATT
0.082uH
L2
032C
p0
0
1
R53
180ohms
5.6n
C351
FL20 SAWEN1G84CN0F00
103
52
81
9
6
74
IN_1842_5
OUT_1842_5_1
OUT_1842_5_2
OUT_1960_1
IN_1960 OUT_1960_2
GND1 GND3
GND2 GND4
6.8n
C273
1nC317
C315 1n
ANT5
ANTENNA_PAD
C379
DNI
p001
532C
KMS-518 SW2
G1
A
C
G2
6.8n
C275
U20
SKY77521
1
3
2
3
3
3
4
3
30 5
29 4
28
27 20
26 19
25 18
24
23 16
22 15
21 14
12 13
11
210
39
1
8
6
717
ANT
BS1
BS2
_TXEN
HB_RF_IN
MODELB_RF_IN
RSVDGND1
GND2
RX4GND3
RX3GND4
RX2GND5
RX1GND6
GND7
WCDMA1GND8
WCDMA2GND9
WCDMA3GND10
GND11
VAPCGND12
VBATTGND13
4
D
N
GP
3
DNGP
2D
N
GP
1
DNGP
0.018uH
L34
SAWEN881MCN0F00FL9
103
52
81
9
6
74
IN_881_5
OUT_881_5_1
OUT_881_5_2
OUT_942_5_1
IN_942_5 OUT_942_5_2
GND1 GND3
GND2 GND4
R135
30ohms
R138
62ohms
47pF
C335
R64
100ohms
DNI
L19
2.2p
C272
ANT_SEL2
ANT_SEL3
ANT_SEL1
ANT_SEL0
PMA
R
_AP_MSG
WCDMA_900_RTX
GSM_TX
RX_GSM_850_M
RX_GSM_850_P
RX_GSM_900_M
RX_GSM_900_P
RX_DCS_M
RX_DCS_P
RX_PCS_M
RX_PCS_P
WCDMA_2100_RTX
DCS_PCS_TX
WCDMA_1900_RTX
(1608)
5dB
GSM(869-894 MHz)
GSM(925-960 MHz)
PCS(1930-1990 MHz)
DCS(1805-1880 MHz)
9dB
2mm
TP1TP2