Circuit Diagram - LG F1200 Service Manual

8. CIRCUIT DIAGRAM

1 2
A
B
C
D
SCLK
E
SDI
PDNB
R123
SENB
0
F
G
H
1 2
3 4
PA_BAND
R105
PA_ON
100
APC
C562
27p
R559
PDNB
390
RF_EN
R555
26MHz
0
CAM_CLK
RXQP
RXQN
RXIP
RXIN
R115
TXQP
820
C134 C137
330p 330p
R116
TXQN
820
R119
TXIP
820
C135 C138
RF2.85V
330p 330p
R117
TXIN
C129 820
0.1u
1000p
C136
R114
R118
NA AFC
1.5K
RF_EN
SENB
R556
390
RF2.85V
R121
NA
R122
NA
ANT_SW1
ANT_SW2
ANT_SW3
3 4 5
RF PART
C108
R106
BS RSVD
100 4 15
NA
PAC_ENABLE
2 100p
L100
SKY77325
GSM_IN U100 GSM_OUT
6 12
C114 C116
1000p 1000p DCS_PCS_IN DCS_PCS_OUT
5 17
C106
C105
VBAT 12p
NA
R104
10K
C102
1000p
C103 C117 C104 C115
33u 22p 0.01u 0.01u
C563 C118
100p
NA 100p
C119
C120 1p
RF2.85V
L102
L101
NA
22nH
C121 1p
C128
32 21
10p VDD3 RFIGN
30 20 C122 1.2p
VDD2 RFIGP
19
RFIDN
1 18
BQP RFIDP
2 17 L103 L104
BQN U102 RFIPN
3 16 6.8nH NA
BIP SI4206 RFIPP
4 15
BIN GND1
5 36
C123 1.2p
XTAL1 GND7
6 35
XTAL2 GND6
7 34
C124 1.2p
XAFC GND5
33
GND4
L105
RF2.85V L106
NA
5.6nH
C125 1.2p
C126
0.022u
R558
390
R557
390
C559 C560 C561
10p 10p 27p
RF2.85V
C113
1000p
NC7NZ34K8X U101
8 7
VCC 1Y
ANT101
1 6
1A 3A
2 5
3Y 2Y
ANT102
3 4
2A GND
ANT100
RF2.85V
MIC5255-2.85BM5 U104
5 1
OUT IN
2
GND
4 3
BYP EN
C133 C132
1u 0.01u
6 7 8
- 101 -
C109
NA
C107
NA
R100 R101
G1
RF ANT
G2 TP100 TP502 TP503
FL100 KMS-507 SW100 0 2p
SHS-L090SF 10nH
C100
C101
NA
8
DCS_PCS_TX
10
EGSM_TX
1 7
EGSM_RX1 GND1
2 14
EGSM_RX2 GND2
3
DCS_RX1
4 12
DCS_RX2 VC3
5 9
PCS_RX1 VC2
6 11
PCS_RX2 VC1
C127
1000p
C112
1000p
RF2.85V
C111
1000p
TEMPSENSE
R102
0
R103
0
R113
0
VBAT
RF_EN
C131 C130
2.2u 1000p
Engineer:
S.J.KWON
Drawn by:
C.B.HONG
R&D CHK: TITLE:
I. Y. HWANG
DOC CTRL CHK:
MFG ENGR CHK:
Changed by: Date Changed: Time Changed: QA CHK: REV:
mentor 2004-09-1 3:07:35 pm
9 10 11
8. CIRCUIT DIAGRAM
12
A
B
C
D
E
F
H
LG Electronics
Size:
F1200
A3
12 1 8 A
Rev_1.0
Drawing Number: Page:
1/5
12