Motorola CDM Series Detailed Service Manual page 272

Section 5: 4-22
5V_UHF_FN_1 5V_UHF_FN_2
(SOURCE)
5V
C4287
100pF
VCTRL_UHF_FN_1
2.5 to 11 VDC
VCTRL
LOCK_UHF_FN_1
LOCK
5 VDC (Locked)
0 VDC (Unlocked)
4.97 VDC (25KHZ Chan. Spacing)
BWSELECT_UHF_FN_1
0 VDC (12.5KHZ Chan. Spacing)
BWSELECT
3.05 VDC (RX)
VCOMOD_UHF_FN_1
2.63 VDC (TX)
VCOMOD
16_8MHz_UHF_FN_1
16_8MHz
0 VDC (RX)
TRB_UHF_FN_1
4.97 VDC (TX)
TRB
UHF Band 1 (403–470 MHz) 1–25 W FRACN Synthesizer
6881091C63-F
6.68 VDC
10.87 VDC
C4203
C4201
100pF
12.7 VDC
.01uF
D4201
C4202
3
K3
2
K2
1
K1
.01uF
C4204
100pF
C4206
C4205
10uF
.01uF
R4221
150 R4203
47
C4221
R4222 C4222
.01uF
510 0.1uF
TP4201
R4223
L4221
C4224 68
12uH
C4223
1uF
NU C4225
510pF
4.97 VDC
C4216
C4213
.01uF
2.2uF
L4201
NU
390nH
5V
4
A3
5
R4201
A2
6
A1
150
R4206
33K
C4210
2.2uF
NU
C4208
0.1uF
C4207 C4228
C4209 0.1uF
0.1uF NU
100pF
NU
R4228
R4204
10K
47
C4246
WARP
25
100pF
INDMULT
16
SFOUT
28
ADAPTSW
46
LOCK
4
IADAPT
45
IOUT
43
TEST2
38
TEST1
37
U4201
AUX4
3 63A27
AUX3
2
AUX2
1
AUX1
48
VMULT4
2.48 VDC 11
VMULT3
2.48 VDC 12
VMULT2
14
VMULT1
15
R4241
220
MODOUT
41
FREFOUT
19
1.28 VDC
XTAL2
24
XTAL1
C4288 3.48
C4241 23
0.1uF VDC
100pF
NU NU
C4289
0.1uF
C4261
IN
6
33pF
NU
GND
1
C4262
330pF
R4262
NU
6.2K
NU
C4235
.01uF
R4263
100
UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists
U4211
ADP3300
ERR SD
?X ?X
OUT IN
?X ?X
NR
?X
C4217
C4211
0.1uF
R4224
.01uF
47K
R4211
0
R4225
C4214
2.2uF
47K
D4221
47K
47K
Q4221
C4236
.047uF
TP4202
R4227
100K
NC3
31
NC2
29
NC1
17
CCOMP
42
REFSEL
18 C4227
10pF
C4230
PREIN
32
2.2uF
SFBASE
27
SFCAP
26
1.76 VDC (Tx)
R4251
4.58 VDC
BIAS2
39 R4252
BIAS1
40
30K
C4253
39K
C4252
4.7uF
VBPASS
21 1000pF
1.78 VDC (Rx)
C4255
PVREF
35
100pF
SFIN 4.97 VDC
30
DATA
7
2.52 VDC
MODIN
10
4.97 VDC
CEX
9
0 VDC
CLK
8
C4244 C4242 C4245
C4243
100pF
100pF 100pF 100pF
R4261
47K
Y4261
C4232 C4233
C4231
75Z04
2.2uF
.01uF
.01uF
16.8MHz
NU
OUT
3
C4263
GND1 0.1uF
D4261
4
NU
TTS05V
1
Y4262
16.8MHz
VCNTL
5V
2 4
C4251
GND
VCC
0.1uF
OUT
3
IN_5V_RF_REG_UHF_FN_1
IN_5V_RF_REG
C4215
2.2uF
VDDA_UHF_FN_1
VDDA
VDDA
VCOBIAS_2_UHF_FN_1
VCOBIAS_2
PRESC_UHF_FN_1
PRESC
C4226 C4229
2.4pF 2pF
NU
VSF_UHF_FN_1
VSF
C4254
0.1uF
DATA_UHF_FN_1
DATA
MODIN_UHF_FN_1
MODIN
CSX_UHF_FN_1
CSX
CLK_UHF_FN_1
CLK
VDDA
L4231
2.2uH
C4234
.01uF
ZWG0130622-O