Circuit - Kenwood KR-V8090 Service Manual

U V
Q Q
3 7 6 3 1 5 1 5 0
X
Q62 X
R68
2.2K
X
X
X
R63
X
47K
X
Q63
X
X
C61
0.01
X
W13
X
A
IF
D2
C5 R8 AMP
0.01 680
9.3V
R2
1.9V
220 X
Q1 CF1 R22
C3
10
1.3V
0.01
+
R1
+7V
220
7.1V
1/4W
(0V)
T E
L 1 3 9 4 2 2 9 6 5 1 3
R90 R89
5.6K 100
VT
1/4W
98MHz
5.1V + +
:3.8V
+
5.0V
R88 1K
1.0V
2.5V
IC2
PLL
1.0V
REFERENCE PHASE DETECTOR UNLOCK
DIVIDER CHARGE PUMP DETECTOR
1 SWALLOW COUNTER
2 1/16, 1/17 4bit
12bit
PROGRAMMABLE
DIVIDER
U N I V E R S A L
C2B I/F DATA SHIFT REGISTER LATCH
COUNTER
12.2V
0V
4.6V
2.5V (9.1V)
X81
7.2MHz
R84 10K
R80 1K
w w w 2
R81 1K
4
R82 1K
C92 5
470P R83 1K
3
.
W X
DISCRI
CN2
1 2
X
Q64
W6
+11V
+
X
R66
1.5K
R36
39K
X
R12
+11V 1.9V
100
(1.5V)
11.0V
3.7V
9.4V
3.7V
9.1V
Q4
X
8.7V Q3 R20
AM AM
ALC
8.7V OSC MIX
X
0.8V CF2
BUFF
Q2
1.8V
1.2V
LEVEL
DET
S-CURVE
FM
+11V
IF FM
DET
3.7V
+11V
11.0V
(0V)
3.7V
8.1V
R87 R86
FM +B
DT
1K 1K 1K
11.0V
0.2V
Q81 L33
+11V
+ +
0V
R93
1.2K
0V
(2.5V)
2.5V
(0V)
8.1V
+
11.0V
+11V
ST: 7.2V
MONO: 0V
x a o
y
CAUTION: For continued safety, replace safety critical components only with
i
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.
Y Z
8
DETECTOR:BUFFER
X
DET OUT:AMP
B
8.3V
2.9V
(3.1V)
Q31 C50
1500P
2.3V R41
2.2K
+
C51
10u10 R43
2.2K
+
+
C52
0V
2.9V 4.7V
10u10
(1.3V)
3.7V (3.9V) (1.7V)
2.9V 3.7V 3.7V
3.7V
2.7V
(4.0V) DECODER
AM
RF.AGC UNTIBIRDIE
S METER
STEREO
SW
AGC
STEREO
TRIG MUTE
DRIVE
AM AM
IF DET
FF FF FF
AM/
FM
IF PILOT
VCO
COMP
DET
BUFF
AM/
FM
TUNING
SW
DRIVE
PHASE DET
AM
Q Q
3 7 6 3
FM
REG GND
8.1V VCC
R35
33K
0.2V
1.7V
3.7V
0V 3.8V
(2.4V)
8.1V
ST: 0V
MONO
: 4.8V L31
L32
+
+
R59
2.7K
DISCRI
+8V
1060VR(K,P)/1070VR(K,P)/KR-V8090(E,T)/KR-V9090(E,T)/KR-V9090W(Q) (2/6)
u 1 6 3
.
AA AB
2 4
9 9 8
8.3V
R55
+15V
5.6K
14.5V
DET-OUT
BUFFER
R56
Q33
7.7V
R57
L34 100
100
S METER BUFFER
3.8V
R50
Q34 10K
R53
1K
R42 2K
X
C
3.3V
C56
2.2u50 R46
+
1K
C55
3.7V 2.2u50 R45
+ 1K
L35 L36
Lch Rch
R47
3.9K R48
3.9K
Q101 Q102
MUTE
ON: 0.7V
MUTE
OFF: -2.2V
IC1 R105
8.2K 3.8V
AM/FM
/MPX
R102
SYSTEM
Q103
1K
MUTE
DRIVE
1 5 1 5 0 8 9 2 4
+15V
-14.9V
-15V
6.7V
(0V)
( 5 )
7.1V
( 4 )
ON:FM
( 3 )
OFF:AM
( 2 )
0V
(0.6V)
Q32
+
+
8.1V 14.5V
R31
+8V +15V
150 1W
+11V
m
c o
1060VR/1070VR/KR-V8090/KR-V9090
Y05-3330-10
AC AD
2
9 9
CN1
15 DET-OUT
14 S-LEVEL
13 SD
X08-B/2
12 STEREO
-E1
11 Rch
9 8 2 9 9
10 GND
4/6
9 Lch
8 +15V
B
7 -15V
6 T.MUTE
5 PLL-DATA
4 PLL-CLK
3 PLL-CE
2 PLL-DO
1 MONO