Nokia 2270, 2272, 2275, 2285 Service Manual
CCS Technical Documentation
Schematics / Layouts
RH-3
Issue 1 06/2003
Nokia Corporation Confidential
Page A-4
Front End
ALFRED
R912
270R
270R
C914
100n
VR4
C901
56p
VR4
2n7H
L902
VR4
GND
C905
C913
3n3
IN
OUT
100n
47k
R904
Z902
1960MHz
1960MHz
150nH
GND
L903
GND
L901
12nH
12nH
GND
GND
GND
GND
C911
100p
2p2
C903
27p
C908
68nH
L910
GND
GND
GND
L905
6n2H
27p
R911
18R
C917
19n0H
1p0
L906
47k
R902
C902
100p
C906
C918
VR4
15nH
47n
150nH
L909
L907
C909
7
P_LNA_OUT
8
9
GND
100p
CDMA_OUT
22
IF_SEL
23
24
24
LO_IN
3
BAND
P_MIX_IN
4
P_RFA_VDD
5
GND
6
GAIN_CTL
15
RFA_VDD_C
16
C_MIX_IN
17
MIX_OUT
IFA_IN
18
19
19
IFA_SRC
2
LO_VDD_C
20
AMPS_OUT
N901
ALFRED_CMH0819N
1
LO_VDD_P
10
P_LNA_IN
C_LNA_IN
11
GND
12
13
C_LNA_OUT
VDD
14
881.5MHz
Z901
IN
OUT
2p2
10k
C912
12nH
L911
GND
R908
5R6
4n7H
L904
VR4
R910
VR4
GND
1n0
C919
GND
GND
GND
15nH
L908
GND
GND
GND
GND
82R
R905
4R3
R901
3p3
C907
GND
GND
CEL_LNA_IN
VCO_RX
R913
270R
270R
RX_SW1
RF_BAND_SEL
IF_CDMA
PCS_LNA_IN