Figure 9-234.Vhf (136-174 Mhz) Receiver Back End Schematic Diagram - Motorola HT Series Detailed Service Manual
Detailed service manual for two-way radios
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VHF Circuit Board/Schematic Diagrams and Parts List
C3200
16pF
IF_1_ZIF
IF
L3200
1uH
RSSI_1_ZIF
RSSI_2_ZIF
RSSI
1.9V @ -47dBm
5V
VSF_3_ZIF
R3225
VSF
4.5V
1K
5V_3_ZIF
5V
R3215
0
NU
4V_3.3V
SWB_PLUS_3_ZIF
R3214
SWB+
22
C3208
R3209
0.1uF
1K
NU
R3206
Q3201
RSSI
100K
R3207
R3208
39K
100
C3210
R3202
1000pF
Y3200
4.7K
C3203
100pF
3
6
IN
OUT
L3201
C3201
C3202
R3211
R3203
1uH
12pF
10K
1 2 3 4
2.2K
1.5pF
NU
NU
NU
C3206
RSSI
.01uF
R3213
2.2K
C3209
1uF
(SOURCE)
Vdd_FILTERED
Vdd_FILTERED
3.8V
R3226
10
Q3202
C3270
C3271
.022uF
330pF
C3214
0.1uF
5V
R3218
10
C3272
NU
4.7pF
C3211
4.7uF
U3201
1
Vdda_3_ZIF
ON_OFF
5
VOUT
Vdda
3
VIN
3.3V
C3212
C3215
GND
C3213
4.7uF
2
10pF
1uF
R5
R5_3_ZIF
R3200
150
C3204
R3201
C3205
.01uF
2.2K
0.1uF
2.9V
R3212
4.7K
L3202
1uH
R3210
2.2k
Q3200
1.5V
C3218
C3221
4.7uF
.01uF
R3204
10
C3230
100pF
C3243
C3207
R3205
.022uF
2.2pF
1K
R3219
100
5V
Vdd_FILTERED
C3219
0.1uF
R3272
47K
C3277
C3276
L3271
3
47pF
82pF
2.2uH
1.5V
1
Q3270
2
C3274
R3273
L3270
D3270
R3276
0.8V
33pF
47K
100nH
200K
C3273
R3271
47
10pF
C3275
R3270
56pF
1K
SH3201
SHIELD
SHIELD
Vdd_FILTERED
Vdd_FILTERED
R3220
4.7K
C3220
10pF
L3221
1uH
R3221
C3228
C3239
.01uF
100
C3229
C3225
100pF
0.1uF
.022uF
C3226
0.1uF
C3238
0.33uF
C3234
C3233
PRE_AGC
1uF
1uF
36
C4M
1
35
RED_VCC
C3M
2
34
RED_VSS
C2M
3
33
C1M
PRE_IN
4
32
C3235
RSSI_OUT
VAG
5
31
0.22uF
RSSI_FLT
LIM
6
30
C3244
U3220
EXTBS
ROSE_VCC
.01uF
7
ROSE_VSS 29
AFC
8
DEMOD_HF 28
R3223
TESTD
9
27
DEMOD_OUT
R3222
VPP
10
26
PHASE_LOCK
1K
100K
NU
GOLD_VCC
11
25
VAG_REF
R3224
EMIT
12
BASE
C3240
10
0.22uF
C3222
C3242
0.1uF
0.1uF
C3227
C3241
C3223
0.1uF
.01uF
1200pF
DATA_3_ZIF
R3275
CLK_3_ZIF
1K
1.5V
R3274
LVZIF_SEL_1_ZIF
2.4K
C3280
10nF
C3278
16_8MHz_3_ZIF
0.1uF
C3279
2.2uF
Figure 9-234. VHF (136-174 MHz) Receiver Back End Schematic Diagram
9-383
C3232
C3231
1uF
1uF
Vdd_FILTERED
C3224
0.1uF
SQ_OUT_1_ZIF
NU
SQ_OUT
C3237
100pF
DEMOD_1_ZIF
NU
DEMOD
C3236
.01uF
NU
Vdd_FILTERED
SH3202
SHIELD
SHIELD
SH3203
SHIELD
SHIELD
ZWG0130025-B
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