LG -A230 Service Manual page 32

1 Rx1 and Rx2 are broadband receive ports and each supports the GSM850,
GSM900, DCS, and PCS bands.
ANT500
GND500
2.2n
C522
C523
100p
C521
DNI
L516
DNI
C511
L517
0.5p
12n
LGE Internal Use Only
Figure 3.3.2 Band SW Logic Table
SW500
L504 2.7n
G2
ANT RF
G1
C512 C513
1.2p
DNI
Figure 3.3.3 FEM CIRCUIT DIAGRAM
FL500
1 I1 9
O1-1
8
O1-2
7
O2-1
4 6
I2 O2-2
10 5 3 2
6.8n
L511
L510 6.8n
RSVD2
14
GND13 RSVD1
23 13
GND12
24
GND11 BS
25 U500 12
ANT VSW_EN
26 11
L505
GND10 Tx_HB_IN
27 10
GND9
C515
28
PGND Tx_LB_IN
29 9
VBAT
C518 C519 C520
6.8p 10u
DNI
10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP
IN CASE OF GSM850/PCS1900
CHANGE THIS MODULE
- 3 - Copyright © 011 LG Electronics. Inc. All right reserved.
3. TECHNICAL BRIEF
3.9n
L512
RF_HB_RXP
L500 L501
DNI DNI
3.9n
L513
RF_HB_RXN
L514 15n
RF_LB_RXP
L503 L502
DNI DNI
L515 15n
RF_LB_RXN
RF_TX_EN
R501 1K
RF_TX_RAMP
C506
1n
C507
39p
RF_2G_BS
C508
1n
2.2nH L506 2.2nH
RF_HB_TX
L507 2.2nH
33p
C514
RF_LB_TX
1n
L509
L508
1.5n
1.5n
C516 C517
1.2p 1p
Only for training and service purposes
RF_VLOGIC