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4. TROUBLE SHOOTING
4.6.2 Checking Ant. SW Module
Refer to chapter 3.4
4.6.3 Checking RF Tx level
ANT500
ANT501
ANT_SEL0
ANT_SEL1
ANT_SEL2
VREG_RFR_2.85V
ANTENNA SWITCH MODULE LOGIC
GSM900 TX
DCS/PCS TX
PCS RX
UMTS 2100
DCS RX
GSM 900 RX
LGE Internal Use Only
SW500
C500
KMS-512
C501
56p
0
G2 RF
ANT G1
L502
C502
1p
NA
L504
56nH
TP1
C509
C510
C511
47p
47p
47p
L514
7.5nH
C519
C520
47p
0.1u
TP2
C528
NA
IN_A
IN_B
IN_C
L523
HIGH
LOW
LOW
22nH
LOW
HIGH
HIGH
LOW
HIGH
LOW
LOW
LOW
LOW
LOW
LOW
HIGH
LOW
LOW
LOW
ESHS-L090UB
FL500
7
1
GND1
EGSM_RX1
9
2
GND2
EGSM_RX2
11
3
GND3
DCS_RX1
13
4
GND4
DCS_RX2
18
5
GND5
PCS_RX1
20
6
GND6
PCS_RX2
17
8
VC1
DCS_PCS_TX
15
10
VC2
EGSM_TX
14
19
VC3
UMTS_TX_RX
TP3
C529
NA
C530
C531
33p
33p
L522
18nH
L524
1.5nH
GND6
DCS_PCS_IN
GND5
BS
12
VCC
U501
TX_EN
TQM7M5003
GND4
VBATT
GND3
GND1
9
GSM_OUT
VRAMP
GND2
GSM_IN
15
Copyright © 2007 LG Electronics. Inc. All right reserved.
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C507 1.5nH
WCDMA_2100
C512
C513
NA
NA
R506
2.2K
C536
(1%)
68p
1
2
GSM_PA_BAND
3
GSM_PA_EN
4
5
6
7
Only for training and service purposes
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