Motorola CP040 Detailed Service Manual page 271

UHF1 PCB 8416205H02-C/-D Schematic Diagrams
482 mV (RF)
3 IN
IF_IN
IF_IN
2 CC1
5 CC2
C52
22pF
C53
9.1pF
1.1%
SH50
SHIELD
1
BW_SEL
5V for 25 kHz IF_BAND_SEL
0V for 12.5 kHz
R93
1.6K
5V
3.39 V
5V
IF_5V
R91
1.6K
R55
C56
330
0.1uF
R53
500 mV (RF)
33K
3.05 V
C55 R54
0.1uF 5.1K
L53
296 mV (RF)
3
120pF
OUT 6 1
0.74 V
370 mV (RF) 2
C93
Q51
3.6pF
PBR941
NU
R52
12K
1 4
FL51
MXF45
44.85MHz
SH52
SHIELD
1
0 V for 25 kHz
5 V for 12.5 kHz
1 7
R65
U52-1
39K
TC7W04F
C68
0.1uF
5V 1 V (25 kHz)
0 V (12.5 kHz)
R61
100K
6 2
U52-2
R63
TC7W04F 39K
C69
0.33 V 2
0.1uF
3
1
0 V (25 kHz)
D51
1 V (12.5 kHz)
R62
3.3K
R60
2.4K
C62
0.1uF
167 mV (RF)
FL52
128 mV (RF)
FLTR
1 IN OUT 2
C61
68pF
C64
0.1uF
0.1uF
3
9180468V04
108 mV (RF)
5R
0.1uF
R92
C94
5V
51
VCC
6
R90
51
C90
C91 C92
0.1uF
10uF 0.1uF
C58
3.9pF
C59 L54
C57 R57
1.2uH
0.1uF 2.7pF 4.7K
2%
3
280 mV (RF)
C60
1 2
0.1uF
CR51
R80
C80
5.1K 22pF
C81
1%
33pF
1%
Y51
TSS2_44_395MHZ
R81
1K
44.395MHz
3
OUT
C82
R82
36pF
NU
L81
1uH
UHF1 (403-440 MHz) Receiver Back End Schematic Diagram PCB No. 8416205H02-C/-D
5 V (25 kHz)
0 V (12.5 kHz)
R66
20K
FL53
CFWC455E
1 IN OUT 2
2.8 V (25 kHz)
0 V (12.5 kHz)
3 4
R64
20K
1
FL54
2.14 V
CFWC455G
3
1 IN OUT 2
2
0 V (25 kHz)
D52
2.8 V (12.5 kHz)
C74
R67
47pF
20K
3 4
C63
0.1uF
17.5 mV (RF)
5V
C67
R72
0.1uF
390
C65
C66
0.1uF
Q70
MMBT3904
3
1
1.23 V
2
0.62 V
U51
SA616 167 mV (RF)
C70
130pF
GND
R73
15
1.8K
R74
1.2K
1 2
Y70
45B02 3
455KHz
R75
12K
100 mV RMS (25 kHz)
50 mV RMS (12.5 kHz)
DEMOD
R77
R78 IF_DEMOD 1.5 V
8.2K 680
1%
R76 C73
12K 4700pF
1 1%
IN
500 mV (RF)
3-23
5V
8
3 5
NC
VCC
GND U52-3
TC7W04F
4
U52-4
PWR_GND
C71
0.1uF
RSSI
IF_RSSI
2.1V When -47 dBm @ antenna
C72
0.1uF