LG GW520 - Page 106

- 107 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Trouble shooting
GW520 service manual
1100001100UMTS3
1010001010UMTS2
1000001000UMTS1
00000100101900 Rx
00000000001800 Rx
0001000100900 Rx
0001010110850 Rx
00001100111800/1900 Tx
0000100001850/900 Tx
ANT_SEL6
ANT_SEL5
(TP9)
ANT_SEL4
(TP7)
ANT_SEL3
(TP8)
ANT_SEL2
ANT_SEL1
(TP6)
VC4
(TP4)
VC3
(TP3)
VC2
(TP2)
VC1
(TP1)
1100001100UMTS3
1010001010UMTS2
1000001000UMTS1
00000100101900 Rx
00000000001800 Rx
0001000100900 Rx
0001010110850 Rx
00001100111800/1900 Tx
0000100001850/900 Tx
ANT_SEL6
ANT_SEL5
(TP9)
ANT_SEL4
(TP7)
ANT_SEL3
(TP8)
ANT_SEL2
ANT_SEL1
(TP6)
VC4
(TP4)
VC3
(TP3)
VC2
(TP2)
VC1
(TP1)
120
GND4
IN
1
2
OUT
SW500
ENWY0001801
MM8430-2610RB3
GND1
3
GND2
4
5
GND3
6
100pC547
FB503
R510
1K
ANT500
NA
C500
C545 100p
GND500
C551
1u
UMTS2
21
22
UMTS3
VC1
3
VC2
4
VC3
5 6
VC4
7
VDD
GND1
1
10
GND2
8
GND3
23
GND4
24
GND5
GSM1800_1900TX
9
GSM1800_RX1
16
17
GSM1800_RX2
GSM1900_RX1
18
19
GSM1900_RX2
11
GSM850_900TX
GSM850_RX1
12
13
GSM850_RX2
14
GSM900_RX1
15
GSM900_RX2
UMTS1
20
LMSP43QL-771
SFAY0011901
FL500
ANT
2
2V85_VRF
R508
1K
L500
3.3nH
C504
22p
C544 100p
C540
0.1u
L502
18nH
GND501
2V85_VRF
1.2p
C507
1K
R511
1.5nH
L501
1K
R509
B2
4
GND
8
VCC
Y1
7
Y2
3
EUSY0154001
NL27WZ32USG
U503
1
A1
A2
5
B1
2
6
L503
NA
100pC546
C539
1000p
ANT_SEL2
ANT_SEL6
ANT_SEL5
ANT_SEL1
ANT_SEL4
ANT_SEL3
TP9
TP10
TP11
TP1
TP2
TP3
TP4
TP7
TP8
TP5
TP6