LG -A230 Service Manual page 128

GND500
LGE Internal Use Only
RF PART
ANT500
2.2n
C522
C523
100p
C521
DNI
L516
DNI
SW500
L504 2.7n
G2
ANT RF
G1
C511
L517 C512 C513
12n 0.5p 1.2p
DNI
TX module
IN CASE OF GSM850/PCS1900
CHANGE THIS DUAL SAW FILTER
TO PART_NO SFSB0001301(B9310)
L512 3.9n
RF_HB_RXP
L500 L501
DNI DNI
FL500
1 I1 9
O1-1 L513 3.9n
RF_HB_RXN
8
O1-2
L514 15n
7
O2-1 RF_LB_RXP
4 6
I2 O2-2
10 5 3 2 L503 L502
DNI DNI
L511 6.8n
L510 6.8n L515 15n
RF_LB_RXN
RF_TX_EN
R501 1K
RF_TX_RAMP
C506
1n
C507
39p
RF_2G_BS
RSVD2 C508
14
GND13 RSVD1 1n
23 13
GND12
24
GND11 BS
25 U500 12
ANT VSW_EN
26 11
L505 2.2nH L506 2.2nH
GND10 Tx_HB_IN
RF_HB_TX
27 10 L507 2.2nH
GND9 33p
C515
28
RF_LB_TX
PGND Tx_LB_IN
29 9
L509
L508
1.5n 1.5n
VBAT
C516 C517
1.2p 1p
C518 C519 C520
6.8p 10u
DNI
10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP
IN CASE OF GSM850/PCS1900
CHANGE THIS MODULE
- 128 -
MODE CONTROL LOGIC
MODE VSW_EN TxEN BS
STANDBY
0 0 0
RX1
1 0 0
RX2 1 0 1
Tx_LB 1 1 0
Tx_HB
1 1 1
RF_VLOGIC
C514
1n
Copyright © 2011 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
Only for training and service purposes