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Only for training and service purposes
LGE Internal Use Only
7. CIRCUIT DIAGRAM
Daisy_Chain
L401
33n
C411 12p
L403
6.8n
L402
2.2n
C457
1p
C463
DNI
DNI
C464
C465
DNI
L454
3.9n
3.9n
L455
C413
27n
L456
47n
C467
2.7n
C466
1.5n
C415
1.2p
C410
22u
C417
100p
C461
100p
U400
12
18
19
20
21
22
13
6
14
2
15
5
16
4
17
3
11
1
10
9
8
7
23
GND_SLUG
VRAM
P
TX_ENABL
E
GPCTRL
0
GPCTRL
1
GND1
VBAT
T
GND2
RX
1
RFIN_LB
NC2
GND3
ANTENNA
RFIN_HB
GND6
GND4
GND5
GND9
GND8
GND7
NC3
RX
0
NC1
C408
0.1u
C409
22p
2.7n
L405
FL400
4
3
2
1
5
10
6
7
8
9
GSM850/900_Bal2
GSM850/900_Bal1
GSM1800/1900_Bal2
GSM1800/1900_Bal1
GND4
GND3
GSM850/900_UnB
GND1
GND2
GSM1800/1900_UnB
SW400
4
3
2
1
ANT
COMMON
G3
G4
C451
DNI
DNI
C452
C462
100p
ANT402
C405
100p
DNI
L411
VBAT
220p
C407
R409
24K
10K
R407
ANT401
1p
C460
1
2
12n
L451
2
1
12n
L452
2
1
RF_TX_RAMP
LowBand_Tx
HighBand_Tx
HB_RxN
HB_RxP
LB_RxP
LB_RxN
RF_PA_EN
RF_ANT_SW1
RF_ANT_SW2
Changed (8/9)
DAISY CHAIN
(12/28) Changed
(12/28) Changed
Changed (1/29)
Changed (9/10)
component changed (12/5)
Changed (9/10)
Changed (9/25)
Changed (9/26)
Deleted (9/26)
Changed (7/27)
Changed (11/6)
Changed (7/27)
(7/27) 0603 -> 1005
(7/17)
(50ohm
)
GSM1800,1900
(7/16) U400 : RF7180 -> RF7182
RF Part
(7/18) coil -> non_coil
GSM850,900
(50ohm)
(50ohm)
(10V, X5R)
(50V)
close to TXM
Shielding by GND
(7/3) DC Blocking
(7/27)
(50ohm
)
(7/18) IFMA -> Metal-stamping