Lge Internal Use Only - LG -S367 Service Manual

CIRCUIT
MODE CONTROL LOGIC
MODE VSW_EN
STANDBY
RX1
RX2
Tx_LB
Tx_HB
GND400 GND401
ANT401
C416 C417
DNI 100p
C418 100p
C421
C419
DNI
15n
CONTROL LOGIC

LGE Internal Use Only

TxEN BS
0 0 0
1 0 0
1 0 1
1 1 0
1 1 1
SW400 L409 2.2n
G2
ANT RF
G1
C423
C422
1p
DNI
Low Band(850/900) Rx
FL400
1 I1 9
O1-1
8
O1-2
7
O2-1
4 6
I2
O2-2
2 3 5 10
L418 L417
6.8n 6.8n
RSVD2
14
GND13 RSVD1
23 13
U400
GND12
24
GND11 BS
25 12
ANT VSW_EN
26 11
L410
GND10 Tx_HB_IN
27 10
GND9
C424
28
PGND Tx_LB_IN
29 9
VBAT
C427 C428
C429
3.9p 3.9p
10u
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4. TROUBLE SHOOTING
L425 3.3n
RF_HB_RXP
C491 C492
DNI DNI
L426 3.3n
RF_HB_RXN
L424 15n
RF_LB_RXP
C489 C490
DNI DNI
L423 15n
RF_LB_RXN
R406 110
RF_TX_EN
R407 1K
RF_TX_RAMP
C410 C407
39p 1n
R410 110
RF_BS
C415
1n
R412 110
2.2nH L411 2.2nH
RF_HB_TX
C420
L412 2.2nH
33p
1n
RF_LB_TX
L414
L413
1.5n
1.5n
C425 C426
1.2p 1p
Only for training and service purposes
RF_VLOGIC