LG W3000 Service Manual page 115

8. CIRCUIT DIAGRAM
8.4 RF CIRCUIT
1
OUT401
A
C408
0.5p
C463
4p
C415
NC
CN303
MM8430-2600B
1
3 IN 4
GND1 GND2
B
5 GND3 6
GND4
OUT
2
C461
22p
FL405
LMSP54AA-097
8
ANT
4
GND1 3
DCS_TX
6
5
GND2 EGSM_TX
7
GND3
9
GND4
12
GND5 1
DCS_RX
13
EGSM_RX 10
GND6
2 11
C
DCSSEL
C444
10p
GSMSEL
C448
27p
D
E
1
LGIC(42)-A-5505-10:01
2 3 4
R401
C402 15K
39p
R403
C406 0
1000p
R404
C407 100
27p
R405
C409 100
27p
VBAT
R406
C418 C419 C420 C421 C422
22
12p 12p 47p 47p 10uF
2012
R414
1
12
4p DCS_IN
12 VCC2
2
BAND_SELECT
C462
DCS_OUT
11
3
L418 TX_ENABLE
C427 U416
8.2nH
0.5p 4
VCC_OUT RF3110
VBATT
10
L414
5
VREG
150nH
GSM_OUT
VRAMP
L419 9
6
8 VCC1 GSM_IN
1.5nH
1608
7
L405
C432
NC
1p
C435
1n
1608
COG
L421 L420
2.7nH 1.8nH
FL406
FAR-G6CS-1G8425-L250
1 7
IN1 OUT1
5
3 IN2
OUT2
G4 G3 G2 G1
C452 C453
NC NC
RF2.85V
RF2.85V VBAT
U414
1 6
OUT _SD
3 2
TEMPSENSE _ERR IN
5 4
NR GND C458
R430
C459
2.2u
0
10uF ADP3330
2012
2012
C460
470p
2 3 4
5 6
RF2.85V
TXRAMP
C403
RF2.85V
22p
TXPA
RF2.85V
BANDSEL1
C414
33p
1
TxDCSPCS
2
TxVCOTune
TP404 3
RX_EN
RXEN
4
TX_EN TP402
TxEN
5
BANDSEL1 TP401
L409 PCO1
6
1.5nH PCO2
7
TXBYPASS
8
VCC1
9
TxCPO
10
TxINP
11
LNAGSMIN
12
GNDLNAGSM
13
LNADCSIN
TP403 14
FEENA
RF2.85V 15
LNAPCSIN
16
NC6
17
NC7
R420
C433
10 C434
10p
0.1u
1K 1%
R422
C440
12p
L411 82nH
1608
COIL
C446 22p
C451
0.5p
2V7_VTCXO
R424
AFC
15K
VSYNTHEN
Iss. Notice No. Date Name
5
- 114 -
7 8 9
C404
RF2.85V
0.1u
RF2.85V
0.1u 0.1u C410
C411 C412 22p
C413
10p
TP411
C416
10u
C417
2012
1u 1608
R407
RF2.85V
C424 5.6K
220p
RF2.85V
49
UHFBYP C425
48
VDDBB 680p
TP409
47
PLL_LE
LE
TP408
46
CLK PLL_CLK
45 TP407
DATA PLL_DATA
TP405
44
LDMUX
TP406
43
SXENA PLL_PD
42
VCCFNCP
41
U441 C428
UHFCPO C429
40
0.1u
GNDCP C430 22p
CX74017 39
GNDFN 10p
RF2.85V
38
FREF
37
VCCF
36
VCCD
35
GNDD
34
NC4
33
NC5
G1
GND1
C436
C437
C438 22p
22p
0.1u
R423
39K
1%
RF2.85V
0.1u
C447
C450
100p
C454
100p
C455
2.2u
2012
13MHz U413
SN74AHC1GU04DCKR
GND VCC
2 4 5
C456
R425
2 VCC 4
CTL OUT
1 3 IN OUT
GND
100
X401 1000p
3
R426 1M
Section Date Sign & Name
MODEL W3000
07/24
Designer
CH HWANG
2002
Checked
DRAWING
NAME
Approved
DRAWING
LG Electronics Inc.
NO.
10
RXIP
C401
100p
RXIN
RXQP
C405
100p
RXQN
A
B
C426
8200p
2012 FILM
RF2.85V
C
C439
0.1u
T_H
TXQN
TXQP
TXIN
TXIP
D
13MHZ
Sheet/
Sheets
4/4
RF Circuit
V1.1
LG Electronics Inc.