Motorola CP160 Detailed Service Manual page 144

4-8
C241
FN_PRESC
PRESC
100pF
C240
1.3pF
FN_DATA
SPI_DATA_OUT
FN_MOD
MOD_IN
FN_SYNTH_CS
SYNTH_CS
FN_CLK
SPI_CLK
C207
470pF
3V
Reference Oscillator
Crystal TCXO
C201 220pF NU
C202 62pF NU
C203 2.7pF NU
C206 NU 0.01uF
R202 150k 47k
R206 NU 100
D201 1SV232 NU
Y201 14R06 NU
Y202 NU 45J68
UHF1 (403-440 MHz) Synthesizer Schematic Diagram
UHF R1 Synthesizer
R247
R230
24K 22K
31 NC3 25
NC WARP
29 NC2 16
INDMULT
NC
17 NC1 28
SFOUT
NC
46
ADAPTSW
42 CCOMP
4
NC LOCK
18 REFSEL 45
NC IADAPT
43
IOUT
32
PREI N
38
27 SFBASE
NC TEST2
26 SFCAP 37
TEST1
U201
39 BIAS2 3
AUX4
C230
63A27
2
40 BIAS1
AUX3
1
2.2uF AUX2
21 VBPASS 48
NC AUX1
35 PVREF
NC
11
VMULT4
30 SFI N 12
VMULT3
7 DATA 14
VMULT2
10 MODIN 15
VMULT1
9 CEX 41
MODOUT
8 19
CLK FREFOUT
24
XTAL2
23
XTAL1
C202
62pF
C208 C209
C210
470pF 470pF
470pF
FN_3V
L211
390nH
C212 C214
C213
2.2uF .01uF 1000pF
5V
FN_5V
R212
5V
0
C217
C215 C216
2.2uF
0.1uF 1000pF
FN_V_SF
4.5V
V_SF
C231 C232 C233
LOCK: 3V
1000pF 0.1uF
4.7uF
UNLOCK: 0V
FN_LOCK
C204
470pF
NC
NC
NC
TX: 3V
NC
FN_TRB
RX: 0V
NC
TRB
NC
NC
NC
NC
FN_VCO_MOD
R205
TP200
R246
1 100
C201
100K
220pF
5V
1%
R202
C205
150K
NU
C211
Y202
0.1uF 45J68
NU
4
VCC
C206
R206
3 1
OUT
VCON
NU 16.8MHz
NU
GND
Y201
2
14R06
16.8MHz
1
3
OUT IN
C203
D201
2.7pF
4 2
3.7%
SH200
SH201
SHIELD SHIELD
1 1
LOCK
C243
R243
820
0.1uF
C245
VCO_MOD
1uF
R220 R221
22 22
C220
FN_16_8
16_8_MHZ
22pF
C221
.01uF
3V
3
0V K3
C222 2
K2
3V 1
K1
0V .01uF
C223
.01uF
C224
NC
3 K3
.01uF
2 K2
1 K1
C228 C227 C226 C225
R227
39K
0.1uF
1000pF
10uF 10uF
UHF1 PCB 8486635Z03-O Schematic Diagrams
FN_V_STEER
R245
3.2V to 4.5V
V_STEER
1.5K
C244
.01uF
0888600M25
R244
51
1
TP240
4
R223
A3
5
100
A2
6
A1
C218 C219
D220
2.2uF 0.1uF
NC
4
A3
5
A2
6
A1
D221