U
W
Y
AA
AC
V
X
Z
AB
AD
(
)
)
(
)
(
)
(
X
X
X
X
(
(
(
(
)
)
)
)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R80 1K
R81 1K
R83 1K
R82 1K
2
4
5
3
470P
R84 10K
22P
C81
+
10u16
C87
0.01
C93
7.2MHz
X81
560
R94
1/4W
COUNTER
UNIVERSAL
X OUT
DO
CL
CE
X IN
DI
BO1
CHARGE PUMP
PHASE DETECTOR
PROGRAMMABLE
1/16, 1/17 4bit
SWALLOW COUNTER
12bit
DIVIDER
DATA SHIFT REGISTER LATCH
DIVIDER
REFERENCE
2
1
VSS
PD
AIN
VDD
NC
AM IN
FM IN
IF IN
NC
UNLOCK
DETECTOR
AOUT
22
21
20
19
18
17
16
15
14
13
12
1
2
3
4
5
6
8
7
10
9
11
456kHz
7
BUFF
3
2
1
FM
IF
FM
DET
4
L33
5
6
REG
GND
FM
DRIVE
TUNING
AM
BUFF
LEVEL
DET
S-CURVE
30
OSC
AM
ALC
29
28
AM/
IF
FM
S METER
DET
IF
COMP
AM
AGC
AM
RF.AGC
MIX
AM
AM
27
25
26
DET
12
PHASE DET
8
9
10
11
SW
AM/
FM
VCC
13
14
15
DECODER
UNTIBIRDIE
VCO
FF
STEREO
DRIVE
24
23
22
21
MUTE
PILOT
FF
FF
TRIG
SW
STEREO
18
20
19
17
16
X31
C36 0.047
10u16
C35
+
+
10u16
C33
C34 0.01
C32
+
C31
47u16
0.01
C37
33K
R59
2.7K
R32 5.6K
10u10
C38
+
C30 0.047
R33
1u50
C40
+
0.47u50
C41
+
3K
C42
2.2u35
+
47K
R49
R34
8.2K
22P
C45
R37
C44
0.047
+
0.47u50
C43
100u10
C46
+
R38 33K
100P
C70
C47
1u50
C49
+
R44
10u10
C52
R43
10u10
R36
2
1
10uH
L63
2P
C68
L34
R41
2.2K
2K
R40
R42 2K
1500P
C50
C92
R85
1K
C84
1000P
R86
1K
R88 1K
1K
C86
1000P
C85
100P
C89
47u16
+
1K
R87
R91
C90
2.2u50
+
C91
0.022
100
1/4W
R93
1.2K
12K
R92
C96
+
47u16
C1
R1
220
1/4W
R2
10K
R69
220
R89
R90
5.6K
150 1W
R31
C48
L31
L32
0.01
C2B I/F
100P
R39 82K
4700P
R35
39K
2.4K
2.2K
L81
1uH
R67
100K
+
+
C51
2.2u50
+
+
2.2u50
C57
8200P
R47
L35
R45
R46
C58
8200P
R48
L36
1K
1K
3.9K
3.9K
W55
0.01
C61
820P
C73
W11
C55
C56
2.2K
C53
C54
MONO
1
GND
10
2
3
4
5
6
4
2
3
5
T.MUTE
PLL-CE
PLL-DO
PLL-CLK
PLL-DATA
9
8
7
Lch
+15V
-15V
15
13
14
11
12
SD
DET-OUT
S-LEVEL
Rch
STEREO
3/5
-E4
X11-A/5
100K
R52
0.1
C60
1K
R53
10K
R50
100
3.9K
R51
R57
100
C59
100P
R56
R55
5.6K
8.2K
R103
R105
R101
820
1K
1K
R102
1000P
22P
C67
2.2K
W85
R15
R3
C3
0.01
CF1
R4
47
R9
0.01
C6
R10
2.2K
100
R5
10K
R11
330
C7
0.01
680
R13
100
R12
3.3K
R14
C8
330
0.01
R16
100
330
R17
R21
CF2
C5
0.01
R8
680
R22
10
R18
390
680
R19
R20
C9
0.01
0.01
C10
R7
220
W27
C64
0.033
47K
R104
W13
W56
2.2K
R68
W6
C63
9P
0.033
C62
1M
R62
R64
47K
R63
15K
R65
1.5K
R66
10K
W24
+11V
+11V
+11V
+11V
+11V
+11V
+11V
+8V
+11V
+8V
+15V
+15V
-15V
+15V
+15V
+15V
+8V
+15V
+15V
+11V
+11V
+11V
+11V
6P
C66
+5V
11.0V
8.1V
ST: 7.2V
MONO: 0V
8.1V
DT
0V
ST: 0V
MONO
: 4.8V
3.7V
8.1V
3.7V
3.7V
2.7V
(4.0V)
3.7V
3.7V
1.9V
(1.5V)
3.7V
0V
(1.3V)
11.0V
9.4V
9.1V
8.7V
8.7V
0.8V
1.8V
1.2V
1.3V
1.9V
9.3V
5.1V
98MHz
:3.8V
(0V)
11.0V
2.5V
1.0V
5.0V
1.0V
0.2V
0V
11.0V
0V
(2.5V)
2.5V
(0V)
2.5V
4.6V
12.2V
0V
(9.1V)
7.1V
(0V)
8.1V
8.3V
14.5V
7.7V
3.8V
3.3V
8.3V
2.3V
2.9V
(3.1V)
2.9V
3.7V
3.7V
3.7V
3.7V
3.8V
2.9V
(3.9V)
4.7V
(1.7V)
MUTE
ON: 0.7V
OFF: -2.2V
-14.9V
7.1V
1.7V
0.2V
8.1V
3.8V
(2.4V)
6.7V
(0V)
0V
(0.6V)
14.5V
IC2
IC1
C-V500/V550/V700/V750/V770 (K) (2/6)
B
D81
PLL
D31
Q32
D32
CN2
DISCRI
Q31
Q81
FM +B
VT
AM/FM
SYSTEM
/MPX
DISCRI
ON:FM
OFF:AM
Rch
B
CN1
Q34
Q33
Q102
Q101
Q103
D101
Lch
D102
MUTE
MUTE
DRIVE
S METER BUFFER
BUFFER
DET-OUT
DET OUT:AMP
DETECTOR:BUFFER
IF
AMP
Q1
D1
Q2
D2
Q3
Q4
Q62
Q63
Q64
X
A
X
C
X
Y05-3380-10
C-V500/V550/V700/V750/V770
CAUTION: For continued safety,
replace safety critical
components only with
manufacturer's recommended
parts (refer to parts list).
indicates safety critical
components. For continued
protection against risk of fire,
replace only with same type and
rating fuse(s). To reduce the risk
of electric shock, leakage-
current or resistance
measurements shall be carried
out (exposed parts are
acceptably insulated from the
supply circuit) before the
appliance is returned to the
customer.
The DC voltage is an actual
reading measured with a high
impedance type voltmeter with
no signal input. The
measurement value may vary
depending on the measuring
MODE
CARRIER
MODULATION
ANT INPUT
FREQUENCY
DEVIATION
FM
98MHz
1kHz
STEREO 67.5kHz 7.5kHz(Pilot)
60dB
AM
1000(999)kHz
400Hz
MONO 30% MOD
60dB
The DC voltage is an actual reading measured with a high
impedance type voltmeter as the AM/FM signal generator is
specified to the conditions as shown in the list below. The
measurement value may vary depending on the measuring
instruments used or on the product. The value shown in ( )
is actual reading measured in the AM made.
c-v500(k)
pcb
2p
98.4.24
1:21
PM
y [ W
5
