Motorola CDM Series Detailed Service Manual page 193

VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists
5V_VHF_FN_1
(SOURCE) 5V
5V_VHF_FN_2
VCTRL_VHF_FN_1
2.5-11VDC
VCTRL
5VDC (LOCKED)
LOCK_VHF_FN_1
0VDC (UNLOCKED)
LOCK
4.95VDC (R)
BWSELECT_VHF_FN_1
0VDC (T)
BWSELECT
4.52VDC (R)
VCOMOD_VHF_FN_1
2.62VDC (T)
VCOMOD
16_8MHz_VHF_FN_1
+1dBm
16_8MHz
0VDC (R)
TRB_VHF_FN_1
4.91VDC (T)
TRB
13.30VDC
6.83VDC
11.28VDC
C3202
.01uF 3
K3 A3
2
K2 A2
1
K1 A1
C3203
D3201
.01uF
C3206
C3205
10uF
.01uF
C3207
R3221
R3203
390
C3221
R3222 47
C3222
0.1uF
0.1uF
680
TP3201
R3223
100
C3223
1uF
C3224
NU
1uF
C3240
22pF
NU
In case Y3261 is used instead of Y3263,
replacement of the following parts requires
new temperature compensation of the frequency:
Y3261, U3201, R3261, R3262, C3262, D3261
4.97VDC
C3213
2.2uF
L3201
390nH
5V
4
5
R3201
6
47
C3210
2.2uF
C3225
0.1uF
R3206
33K
D3221
NU R3226
47K
C3208
NU
NC
C3228
0.1uF
0.1uF
C3246
C3209
220pF
22pF 0.1uF
NU
R3204
25
47 R3228
WARP
47K
NC 16
NU INDMULT
28
SFOUT
46
ADAPTSW
4
LOCK
45
IADAPT
43
IOUT
NC 38
TEST2
37
NC
TEST1
U3201
3
AUX4
2
AUX3
1
AUX2
48
AUX1
63A27
11 VMULT4
NC
VMULT3
12
NC
VMULT2
14
15 VMULT1
R3242
41
MODOUT
0 R3241
19 FREFOUT
100
XTAL2
2.90VDC
24
L3232
C3241 3.42VDC 23 XTAL1
56pF
2.2uH
NU
NU
16.8MHz Y3261
75Z04
NU
6
OUT
IN
C3261
GND GND1
39pF
1 4
C3235
NU
.01uF
R3262
6.2K
R3263
C3262
NU
330pF 4,7k
Y3263
NU
16.8MHz 2
R3211
0
C3214
2.2uF
U3211
ADP3300
VDDA
1
6
3
GND
IN_5V_RF_REG_VHF_FN_1
SD
ERR
4
OUT
IN
5
2
NR
C3211
C3215
0.1uF 2.2uF
VCOBIAS_1_VHF_FN_1
R3224
47K
C3229
R3225
47K
.047uF
47K
Q3221
47K
VCOBIAS_2_VHF_FN_1
1.1-4.1VDC
1
TP3202
31
NC
NC3
-2 to +7dBm
29
NC 3.63VDC
NC2
R3227
17
C3226
NC
NC1
100K
8.2pF
42
NC
CCOMP
18
NC
REFSEL
C3227
32
PREIN
27
C3255
SFBASE NC
100pF
26
SFCAP
R3252
330K 2.2uF C3252
39
BIAS2
1000pF
40
BIAS1
R3251
21
C3253
VBPASS
NC 180K
35 4.7uF
PVREF NC
SFIN 30
5VDC
7
DATA
10 2.5VDC
MODIN
5VDC
9
CEX
8 0VDC
CLK
C3244
220pF
C3243
C3242 C3245
220pF
220pF 220pF
R3261
47K
C3232
3 C3231 C3233
.01uF .01uF 2.2uF
D3261
C3263
NU
0.1uF
1
5V
VCNTL
4
C3251
OUT
0.1uF
3
–
VHF (136 174 MHz) 1
Section 4: 4-25
VDDA_VHF_FN_1
VDDA
IN_5V_RF_REG
VCOBIAS_1
VCOBIAS_2
PRESC_VHF_FN_1
PRESC
VSF_VHF_FN_1
VSF
C3254
0.1uF
DATA_VHF_FN_1
DATA
MODIN_VHF_FN_1
MODIN
CSX_VHF_FN_1
CSX
CLK_VHF_FN_1
CLK
VDDA
L3231
2.2uH
C3234
.01uF
ZWG0130393-A
–
25 W FRACN Synthesizer
6881091C63-F