Vhf Receiver Back-End Schematic Diagram - Motorola HT Series Detailed Service Manual

Circuit Board/Schematic Diagrams and Parts List
L3200
IF_1
680nH
3 IN
IF
G
2 CC1
C3201 5 CC2
16pF
C3206
9.1pF
R3215
4V_3.3V
0
G
4V_3.3V NU
R3214
SWB_PLUS_3
22
SWB+
G
1
VIN
3
ON_OFF*
C3212 C3215
1uF 10pF
FMR-2045A-2
R3200
820
5V
G
C3205
0.1uF
R3202
R3204
27K
4.7K
Y3200
MXF45
44.85MHz
L3203 C3210
0.1uF
680nH
6
OUT
C3202 R3203
NU 12K
1 4
U3201
LP2980
SH3202
SH3203
SHIELD
SHIELD
Vdda_3
VOUT 5
G Vdda
4
NC
C3213 1 1
4.7uF
Figure 8-5. VHF Receiver Back-End Schematic Diagram
R3209
39K
5V 1 7
U3221-1
TC7W04F
C3225
0.1uF
U3221-2
R3276
100K TC7W04F
BW_SEL
2
6
G
C3208
0.1uF
3
CR3202
R3206
R3207 910
12K
C3238
0.1uF
Y3205
CFUCJ455E
1 2
IN OUT
3
5V G
R3221
R3201 C3218
51
620 10uF
C3228
C3221
0.1uF
0.1uF
C3207
C3222
4.7pF
0.1uF
L3202 R3220
C3200
NU
1.2uH
2.7pF
CR3201
Q3200
C3230
0.1uF
C3203
30pF
R3270
1K
Y3201
TSS-2
R3271 C3275
NU 24pF
L3270
1uH
Y3203
CFWC455E
1 IN
OUT 2
R3212
20K
8
VCC
3 4
GND
4
R3211 R3205
39K 43K
Y3204
1
CFWC455G
2 3
1 OUT 2
IN 2
1
CR3203
3 4
5V
C3226
0.1uF
R3226
C3234 C3231
390
C3232 0.1uF
0.1uF C3233
0.1uF
0.1uF
3
1 Q3270
MMBT3904
2
U3220
SA616
R3274 C3279
1.8K 120pF
VCC
GND 15 R3275
6
1.2K
1
Y3202
3
45B02
455KHz
R3213
12K
R3273
C3209
15K
C3274 0.1uF
30pF
G
R3224
R3222 DISC_OUT
10K
680
R3223 C3236
4700pF
12K
44.395MHz
3 1
OUT IN
81
5V
5
3
NC
U3221-3
TC7W04F
U3221-4
PWR_GND
R3208
20K
2
C3278
0.1uF
RSSI_1
G RSSI
RSSI_2_ZIF
DISC_OUT
December 26, 2003