LG C3400 Service Manual page 104

1 2 3
ANT500
ANT501 ANT502
C500
1.2p
L509
3.3nH
A
L500
22nH
SW500
ENWY0002201
C508
22p
FL500
8
ANT
4
GND1
6 5
GND2 EGSM_TX
7 3
GND3 DCS_TX
B 9
GND4
12
GND5
13 10
GND6 EGSM_RX
14 1
GND7 DCS_RX
11 2
SHS-C090DR
C
L507
33nH
C531 10p
L508
33nH
D C537 3.3p
ANT_SW1 ANT_SW2
L
GSM_TX H
L H
DCS_TX
RX L L
E
1 2 3
LGIC(42)-A-5505-10:01
4 5
C502 C507
C581 C504 C505
12p 18p 22u
0.01u 33p
C541
33p
RSVD BS
15
C512 PAC_ENABLE
C511
SKY77325
NA 0.5p
GSM_OUT U501 GSM_IN
12
C514
DCS_PCS_OUT DCS_PCS_IN
17
22p
C517 L502
NA NA
C503 C506
0.01u 0.01u
TX_RAMP
R509 1K
C513
1p
3
2
C510
G1 O1 L501
1
IN FL401
27nH
EFCH942MTCA7 G2 O2
27p
5 4
C518
1p
C521
1p
3
2
G1 O1
L503
1
IN
FL402
G2 O2 6.8nH
EFCH1842TCA7
5 4
C522
1p
ANT_SW2 GPO_11
RF2.85V
U503
5 1
ANT_SW1 OUT IN
GPO_9
2
GND
4 3
BYP EN
C536
C535
4.7u 22n MIC5255-2.85BM5
(1608)
Iss.
4 5
6 7 8
VBAT R501 100
PA_BAND
C501
27p
R502 100
PA_EN
RF2.85V RF2.85V
C509
27p
C532
100p
4
2
R503
6
36
R504 R505
150 150
5
R506
30
R507 R508
180 180
21
RFIGN
20
RFIGP
19
RFIDN
18
RFIDP U502
17
RFIPN SI4205
16
RFIPP
15
GND1
36
GND8
35
GND7
34
GND6
33
GND5
RF_LDO
VBAT
CLKON
C529
4.7u
(1608)
Section Date Sign & Name
Designer Kim sang jun
05/01/17
Checked
05/01/17
Approved
05/01/17 Song yoon seok
Notice No. Date Name
LG Electronics Inc.
- 103 -
9 10
GPO_17
GPO_16
C525
22n
C516
26MHz
1000p
QP
C526 39p
QN
IP
C519 39p
IN
1
RXQN
2
RXIP
3
RXIN
4
TXIP
5
TXIN
6
TXQP
7
TXQN
RF2.85V
C527 C530
22n 22p
2V75_VVCXO
C528
X500
R510 R515
3 1
OUT VCONT AFC
10K
100
100p
4 2
VCC GND
C540
C539
0.1u
26MHz
2.2u
RF_PWR_DWN
RF_PWR_DWN
S_EN
S_EN
S_CLK
S_CLK
S_DATA
S_DATA
Sheet/Sheets
MODEL C3400
5/7
Lee ki sung
DRAWING
RF
NAME
DRAWING
Ver 1.1
NO.
7. CIRCUIT DIAGRAM
A
B
C
D
LG Electronics Inc.