LG -A258 Service Manual page 35

ANT300 ANT301
C303
2.7n
C309 1p
C311
100pF
C319 DNI
C352
100pF
10n
C353
SW300
LGE Internal Use Only
Table 3.4.1 Band SW Logic Table
ANT302
C304
L302
DNI
8.2n
L306
1.2n
C330
L307
DNI
100n
VBAT
C334
33p
Figure 3.4.2 FEM CIRCUIT DIAGRAM
FL300
1 I1 9
O1-1
8
O1-2
7
O2-1
4 6
I2
O2-2
2 3 5 10
L303
6.8n
RSVD2
14
GND13 TO PART_NO SKY77550 RSVD1
23 13
GND12
24
GND11 BS
25 12
U301
ANT VSW_EN
26 11
GND10 Tx_HB_IN
27 10
GND9
28
PGND Tx_LB_IN
29 9
C335 C350 C336
2.2u 3p 10u
MODE RF_VLOGIC
Stanby
RX1
RX2
TX_LB
TX_HB
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3. TECHNICAL BRIEF
C300 3.3n
L300
L301
DNI
DNI
C307 3.3n
C308 15n
L304
L305
DNI
DNI
C310 15n
R303 1K
C320
C321 C322
33p
33p 39p
C323
DNI
L308 47p
L309 22
DCS_PCS_OUT
L313 47p L314 1n
GSM_OUT
L310
L315
1.5n
DNI
C333 C346
1.2p
DNI
RF_TX_EN BS2
LOW LOW LOW
HIGH LOW LOW
HIGH LOW HIGH
HIGH HIGH LOW
HIGH HIGH HIGH
Only for training and service purposes
RX34
RX34X
RX12
RX12X
RF_TX_EN
RF_TX_RAMP
BS2
RF_VLOGIC