LG C1100 Service Manual page 104

1 2
ANT1
C331
0.5p
A
L308 1.2nH
L307
22nH
KMS-507 SW301
C321 22p
C322
0.5p
FL301
8
ANT
4
GND1
B 6 5
GND2 EGSM_TX
7 3
C325
GND3 DCS_TX
9
NA
GND4
12
GND5
13 10
GND6 EGSM_RX
14 1
GND7 DCS_RX
11 2
SHS-C090DR
C387
27p
C
L305
ANT_SW2 GPO_11
33nH
C382 10p C383 27p
L306
ANT_SW1 GPO_9
33nH
C384 3.3p C385 10p
D
VREF
VRF
R316 10K
C362
RF_TEMP
10u
R319
RF BOARD TEMPERATURE
E
1 2
LGIC(42)-A-5505-10:01
3 4 5
VBAT VRF
C344 C345 C389 C302 C301
10p
6p 47p 22p 33u
GSM_IN
7
VCC1
8
L301 VRAMP
6
GSM_OUT
8.2nH
9
VREG
5
C323
0.5p RF3133
VCC_OUT VBATT
4
10
U302
C326
TX_ENABLE
3
DCS_OUT
11
2p
BAND_SELECT
2
VCC2
L302 12
DCS_IN
1
4.7nH
C351
1p
2 3 FL302
1 G1 O1
IN L303 27nH
G2 O2
5 4
B7820
C352
1p
C353
1p
2 3 FL303
G1 O1
1
IN
L304 7.5nH
G2 O2
5 4
B7821
C354
1p
ANT_SW1 ANT_SW2
GSM_TX L H
DCS_TX H L
RX L L
VBAT
MIC5255-2.85BM5 U303
5 1
OUT IN
2
C363 GND
4 3 R317 0
BYP EN CLKON
0.01u
C361 10u
Iss.
3 4 5
6 7 8
C316 C317
27p 27p
C375
100p
R305 C311
47
33p
R306 R307
130 130
R309 C312 VRF
36
10p
R311 R312
150 150
C399 C386
22n 22p
21
RFIGN
20
RFIGP
19 1
RFIDN RXQN
18 2
U301
RFIDP RXIP
17 3
RFIPN RXIN
16 4
RFIPP TXIP
15 5
SI4205
GND1 TXIN
36 6
GND8 TXQP
35 7
GND7 TXQN
34
GND6
33
GND5
VRF
C341 C356
0.022u 22p
C373
100p
VVCXO
R314
100
C371
2.2u
(1608)
Section Date
02/25
Designer
2004
02/25
Checked
2004
02/25
Approved
2004
Notice No. Date Name
LG Electronics Inc.
- 103 -
9 10
R301 15K
TX_RAMP AD6535_PA
R302 100
PA_EN
GPO_16
R304 100
PA_BAND GPO_17
C350
39p
VRF
R310 0
13MHZ_MIDI
C355 1000p
13MHZ
QP
C342 39p
QN
IP
C343 39p
IN
X301
R315
3
OUT AFC AD6535_AFCDAC
15K
C372
4 2
VCC GND 1000p
13MHz
RF_PWR_DWN
RF_PWR_DWN GPO_4
S_EN
S_EN GPO_19
S_CLK
S_CLK GPO_21
S_DATA
S_DATA GPO_20
Sign & Name
Sheet/Sheets
MODEL C1100 (GB-1E)
SEO D. H.
KIM S. C.
DRAWING
RF(AERO1)
NAME
CHO B.K.
DRAWING
REV. 1.0
NO.
8. CIRCUIT DIAGRAM
A
A
B
B
C
D
3/4
LG Electronics Inc.