Receiver Schematics - Nokia 6275 Rf Description And Troubleshooting

6275/6275i (RM-154)
RF Description and Troubleshooting

Receiver Schematics

The following schematics are for general reference only. See the Schematics chapter for detailed versions.
Vrx VR5
R7160
SHORT_CIRCUIT
L7160
LNA_PCS
7n5H
C7189
0p5
L7161
GND
LNA_CEL
19n0H
C7161
GND
R7161
BAND_SEL_FE
47k
C7162
100p
GND
R7162
GAIN_CTL
47k
C7163
100p
GND
R7163
IF_SEL
47k
C7164
100p
GND
L7163
PCS_CELL_LO
3n3H
Page 22
C7165
L7165
56p 12nH
GND
C7167
L7166
12p 3n3H
GND
RX front end IC
N7160
SC-7195-C
L7162
4 Pmix_in AMPS_out 20
16 Cmix_in Mix_out 17
12nH
GND
10 Plna_in Plna_out 8
11 Clna_out 13
Clna_in
3 CDMA_out 22
Band_sel
7 2
Gain_cntl Vdd
1
Vdd
18 5
IFA_In Vdd
19 14
IFA_src Vdd
23 15
IF_Sel Vdd
24 6
LO_in GND
9
GND
12
GND
L7164
82nH
GND GND
Vrx L7169
15nH
R7166
4R3
C7172
47n
GND
Figure 17: Receiver schematics - 1 Rx Front-end
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Vrx
Cell RF SAW filter
Z7160
C7166
881.52MHz
1p8
IN GND OUT
Vrx
R7164
4R3 C7168 PCS RF SAW filter
100n
Z7161
C7169
1960MHz
1p5 GND
IN OUT
GND
C7170
100p
L7167
220nH C7171
5p6
C7176
GND
1n0
L7171
180nH
VR4
C7177 C7178
L7170
R7165 82nH 4p7
82R
L7168
Vrx
18nH
C7174
C7175
C7182 C7183
3n3 100n
22p 3n3
GND GND
C7184
GND GND
L7176
120nH 2p2
C7185
100p
C7173
12p
GND
Nokia Customer Care
Z7162
128VH30A
128.1MHz C7180
L7172
IN OUT
120nH
GND
C7179
L7173
120nH
10p
AMPS IF SAW filter
3p9
GND GND
L7175
AMPS
GND
220nH
CDMA IF SAW filter
Z7163
B39131-B4959-H310
128.1MHz
In Bal_Out
Bal_Out
/Gnd
GND
L7177
100nH
GND
Issue 1 - September 2006
6p8
L7174
220nH
C7181
GND
6p8
C7187
12p
CD
L7178
120nH
GND
L7179
C7188
120nH
12p
CD