User Guide

Nokia Customer Care 6255/6255i/6256/6256i (RM-19) Schematics / Layouts 6255/6255i/6256/6256i (RM-19)
Issue 2 05/2005 ©2005 Nokia Corporation Company Confidential Page A-2
Front End
CEL CDMA Lo Gain
GAIN_CTL
1
0
10
0
PCS CDMA Hi Gain
PCS CDMA Lo Gain
1
0
BAND
0
0
1
1
LOGIC INPUTS
AMPS Hi Gain
MODES
0
0
1
CEL CDMA Hi Gain
0
GND
1
0
0
IF_SEL
AMPS Lo Gain
L7165
GND
220nH
L7178
L7169
120nH
Vrx
120nH
1960MHZ
Z7161
IN OUT
GND
R7163
47k
C7167
NOT_INSTALLED
6p8
C7169
C7188
8p2
8p2
C7182
1p8
C7187
15nH
L7175
NOT_INSTALLED
L7162
6n2H
GND
GND
GND
Vrx
GND
18nH
L7171
1p0
C7180
47n
C7184
GND
GND
GND
C7174
6p8
GND
82nH
L7173
L7163
19n0H
C7164
NOT_INSTALLED
L7179
GND
82nH
GND
GND
GND
C7179
22p
GND
L7160
15nH
82R
R7162
C7185
12p
100p
1p5
C7161
C7181
47k
180nH
L7167
R7161
3p9
Vrx
C7172
L7161
2n7H
Gain_cntl
7
8Plna_out
9
GND
C7165
1p0
22CDMA_out
IF_Sel
23
24
LO_in
3
Band_sel
Pmix_in4
Vdd
5
GND
6
14
Vdd
Vdd
15
Cmix_in16 Mix_out 17
IFA_In
18
19
IFA_src
2
Vdd
AMPS_out 20
ALFRED_SC_7195_PBFREE
1
Vdd
10 Plna_in
11
Clna_in
GND
12
13Clna_out
82nH
L7170
GND
N7160
4p7
C7173
GND
128.1MHz
IN
GND
OUT
GND
Z7162
128VH30A
10p
C7171
L7168
220nH
C7183 100p
GND
C7162
100n
4R3
12p
C7163
GND
R7164
3n3
C7176
100p
C7166
C7177
3n3
C7168
220nH
4p7
L7164
1n0
C7170
120nH
L7177
GND
GND
VR5Vrx
L7166
12nH
R7165
47k
L7176
120nH
4R3
R7160
Vrx
GND
Vrx
C7160
56p
Bal_Out
Bal_Out
/Gnd
In
150nH
L7174
GND
B39131-B4959-H310
128.1MHz
Z7163
3n3H
L7172
C7186
C7175
100p
100p
100n
C7178
GND
IN
OUT
GND
GND
881.5MHz
Z7160
LNA_PCS
CDMA_IF_P
CDMA_IF_N
IF_SEL
GAIN_CTL
BAND_SEL_FE
PCS_CELL_LO
LNA_CEL
AMPS_IF_P
AMPS_IF_N