Kenwood C-V751, Руководство по обслуживанию

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GND
FM 75
J1
Q1
D1
FM TUNED
PLL
D4
Q14
CN2
CN1
Q2
D3
D8
D9
Q10
Q11
Q12
D5
D13
AM ANT
WH2
X08-
3/5
D11
: 2SK302
: 2SC2413
: SVC220 or
: 2SC2714
KV1440
D1-4
FET1
TR1
TR2,3
D1
FET1
D4
BUFFER
OSC
TR2
TR3
OSC
D3 D2
RF AMP
FM FRONT END
DISTORTION(ST)
TR1
MIX
IC1 :
IC2 : LC72131
Q1,6,7 : 2SC4177(L5,L6) or
Q2,12,14 : 2SA1611(M5,M6) or
Q10,11 : 2SD1757K
D1 : DA204U or
D3 : RD8.2ES(B2) or
D8,11,13 : MA111
RD5.1ES(B2) or D4 :
RD3.3ES(B2) or D9 :
RD2.7ES(B2) or D5 :
GND LINE
SIGNAL LINE
B LINE
B LINE
MTZJ3.3(B) or
MTZJ2.7(B) or
MTZJ8.2(B) or
MTZJ5.1(B) or
MA143A or
2SC4116(Y,GR)
2SA1586(Y,GR)
1SS302
LA1837
Q6
Q7
270
R44
100
0.01
C3
10
3.3K
R7 820
680
R4
CF1
CF2
R12 100 1/4W
4P
C75
R41
100K
L1
10K
R42
0.01 C36
1uH
L2
S-METER
DRIVE
TUNING
FM
AM/FM
S-CURVE
1 2
FM IF
S-METER
FM
DET
IF-BUFF
3 4
GND
5
AM
OSC
BUFF
ALC
30 29
SD
COMP
AM
AM IF
RF.AMP
AM
MIX
REG
28
AM
AGC
27 26
VCC
8 6 7
DRIVE
STEREO
9
12 10 11 13 15 14
MUTE
DET
25 24 23 22
38K 304KHz
VCO FF
2 19K
FF
DECODER
ANTI-BIRDIE
P-DET
21
SW
STEREO
20 19
PILOT
DET
FF
19K 8
18 17 16
47P
0.047
C20
10u10
C19
+
0.047
C22
3.3u35
C21
+
R25 C26
10u50
C23
+
4.7u25
C27
C25
VR1 10K
4.3K 4.3K
2.2u50
C29 +
2.2u50
C28 +
C31 C79 C30 C80
10u50
C38
+
10u50
C37
+
0.047
C12
22
R16 R14
33K R15
10u50
C14
+
R17 3.6K
C45
+
C15 1u50
3.9K
3K
R18
0.47u50
C16 +
R19
C17
1u50
+
8.2K
L4
1
C81
L3
0.047
C1
1
47u16
C10
+
2 1
15K
47P
C76
C39
6P
21
C
DIVIDER
REFERENCE
3 2 1 4 5
2
22 14
SWALLOW COUNTER
1/16,1/17 4bits
ON
DETECTOR
RESET
DATA SHIFT REGISTER LATCH
6 7 8
10
9
11
POWER
CHARGE PUMP
PHASE DETECTOR
UNLOCK
20 19 18 17 16
UNIVERSAL COUNTER
12bits PROGRAMABLE
DIVIDER
1/2
15 13 12
7.2MHz
X1
C42 22P
1.2K
R59
R58 12K
R49 10K
R46 3.3K
R47 3.3K
R45 3.3K
R48 1K 470P
C44
47u16
C48
+
10u50
C46
+
1000P
+
0.022
2.2K
1K
R54
R51
5.6K
100 R52
470
R50
C47
1/4W
1K
R56
100P
C52
1K
R57
470P
C51
100P
C50
33K R55
R43 220
2
1
4
3
E1
C1
3300P
C18
L5
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
DET
S-LEVEL
SD
STEREO
Rch
GND
Lch
+15V
-15V
T. MUTE
PLL DT
PLL CLK
PLL CE
PLL DO
CH.SPACE
R82
2.7K
1u50
C72
+
47u16
C73
+
R1
R5
R6 220
0.01
C5
R1
1
C6
0.01
390
R9
1K
R10
C82 0.01
C7 47u16
+
150
R81
1W
4.7u50
C32
+
820
8.2K
R75
1K
1.8K
R76 R78
R77
47K
R74
R84 3.3K
1K
R72
R73
C78
2.2u50
R85 33K
33K R86 R87 33K
3300P
C85
3300P
C84
56K R88
3300P
C88
33K R89
R20
C91
R79 3.3K
R33
R34 1K
W60
VREF T
.METER
B I/F
+B
+B
+B
+B
+B
+15V
15V
+15V
+B
+B
+B
+B
+B
+15V
R8
22
100
R27 R28
C24
3.9K
3.9K
0.018 27K
1K
R83
27P C43
C41
22P
L9
10uH
2P
C40
C2
0.01
R2
220
IF-OUT
VT
VCC
OSC
5P 0-100 C4 C2 C1
4 GND
3 GND
27P
C3
ANT1
2 GND
1
L1
27P 15P
100K 100K
3-7P
C5
C14
0.1
R3 R1
L2
0-5P C6
10P
C7 5-10P
L4 L3
150K-
R19 100 220 R16
R14
L7
C17
2-6P
47P C16
R12 3.9K
C19
8P
C21
470-
R17 10K R15 1.5K 10P
560K
C22 27P C20
10K
R18
1-3P
100P
C23
R8
680K-1.5M
C10
1000P
C8 0-6P
R5
100
R7 33K R6 33K
680
L5
R9
L6
C15
0.1
R11
0-100
C12 2P
C1
1
27P
0.1
C13
R2
33K
R4 C9
IFT
8
6
7
5
1K
R38
R80 22K
330P
180P
0.022 0.022
4700P 4700P
22P
10K R39
1K
R40
1K
R36
3.9K
R37
100
R35
8200P
C70
8200P
C71
C49
R53
R23
15
14
14 15
1
+B
+B
+B +B
+15V
+B
+B +B +B
+B
B
+B
L7 L6
470P
C86
IC2
IC1
TUNER UNIT (X05-5082-70) : (E,X)TYPE
A
C-V751 (1/5)
A1 (W02-2584-05)
1.8V 6.2V
10.2V
6.8V
1.3V
1.1V
(0V)
6.9V
:3.8V
FM98MHz
(0V)
10.8V
(11.2V)
10.2V
8.0V
10.9V
2.6V
2.6V
0V
0V 0V
1.0V
5.0V (0V)
6.9V
7.0V
1.6V
1.0V (0V)
2.5V
(2.5V)
0V
(11.2V)
0V
14.4V
-15.1V
OFF: 4.7V
ON: 0.4V
MUTE
MUTE
ON: 0.7V
OFF: -2.2V
3.6V 3.6V 3.6V
0V
8.0V 8.0V 8.0V 1.3V 7.0V
0V
(4.7V) (0V)
4.3V 0V
(0.2V) (3.9V)
7.0V
(2.3V)
0V
4.3V
4.3V 4.3V 3.4V 3.4V 2.9V
(0.4V)
3.6V
(1.4V)
0V
(1.3V)
0V
(3.6V)
3.7V
(3.6V)
3.7V
(3.6V)
3.7V
11.3V
0V
0V
0V
-2.2V
5.0V
-2.2V
3.4V
-2.2V
(1.8V)
1.9V
A C E G I B D F H J
2
1
3
5
7
4
6
Y05-3942-70
C-V751
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
CAUTION: For continued safety,
replace safety critical compo-
nents only with manufacturer's
recommended parts (refer to
parts list).
indicates safety
critical components. For contin-
ued 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 measure-
ments 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 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 mode.