Motorola CP040 Detailed Service Manual page 431

IF_BAND_SEL
BW_SE L
5V
U52-3
TC7W04F
8
3 5
NC
U52-4 VCC
PWR_GND
GND
4
5V
IF_5V
5V
FL51
MXF45
44.85MHz
IF_IN
OUT
3 IN
IF_IN
2 CC1
C52
5 CC2
22pF
C53
4
1
9.1pF
1.1%
5V
U52-2
R61
100K TC7W04F
2
5V for 25kHz 6
0V for 12.5kHz
SH50 SH52
SHIELD SHIELD
1
1
9180468V04
1
IN
R91
3.39V
1.6K
C56
R55
0.1uF
330
R53
C58
33K 3.05V
C55
3.9pF
R54
C57 C59
6.2K
0.1uF
0.1uF 2.7pF
L53 3
6 1
CR51
0.74V
3
120pF
2
Q51
C93
R52
PBR941
12K
3.6pF
2
1
NU
RX Back End (Overtone)
1 7
C68
U52-1
R65 FL53
TC7W04F 39K CFWC455E
0.1uF
1 IN OUT 2
3 4
C69
D51 R63
0.1uF FL54
39K
2
CFWC455G
3
1 IN 2
1 OUT
R62
3.3K
R60
2.4K
3 4
C62
FL52
FLTR
0.1uF
OU T 2
C64
C61
C65
0.1uF
47pF 0.1uF
3
5V
R90
6
U51
VCC
SA616
51
C91
C90 C92
0.1uF
0.1uF 10uF
L54
R57
1.2uH
4.7K
2%
C60
C81 C80
0.1uF R80
5.1K
22pF
33pF
1%
1%
Y51
TSS2_44_395MHZ
R81
1K
44.395MHz
C82
1
3
OU T I N
36pF
R76
GND
R82 GND1 12K
L81
1uH NU 1%
4 2
UHF3 (490-527 MHz) Receiver Back End Schematic Diagram PCB No. 8486768Z02-A
R66
20K
D52
R64
20K
1
3
2
C74
R67
47pF
20K
C63
0.1uF
5V
C67
C66
0.1uF
R72
0.1uF
390
3
Q70
1
MMBT3904
2
C70
R73
15 1.8K
GND
130pF
R74
1.2K
Y70
45B02
455KHz
1 2
C71
3
0.1uF
IF_RSSI
R75
2.1V When -47 dBm @ antenna
12K C72
0.1uF
IF_DEMOD
R77
R78
1.5V
8.2K 680 C73
1%
4700pF
3-41
RSSI
DEMOD