Kenwood KRF-V8010D Service Manual page 15

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TUNER UNIT
(X05-482X-XX) 2-70: KRF-V8010D(E,T,X) 3-81: KRF-V8010DW(Q)
1
2
(E,T,X) TYPE
A1 (W02-2584-05)
RF AMP
C1 C2 C4
1 27P 15P 0-5P C6
ANT1 L2 10P
2 GND
3
D1
3 GND
4
GND
FET1 : 2SK302
TR1 : 2SC2714
TR2,3 : 2SC2413
D1-4 : SVC220 or
KV1440
(Q) TYPE
A1 (W02-2586-05)
4
J1 RF AMP
C1 C2 C4
1 1 27P 27P 0-5P C6
FM 75
10P
ANT1 L2
2
2 GND
D1
3 3 GND
GND
AM 4
GND
4
5 VT
FET1 : 2SK302
TR1 : 2SC2714
TR2,3 : 2SC2413
5
D1-4 : HVM25 or SVC208
D5 : HSU277 or 1SS356
E1
IC1 : LA1837 D1 : DA204U or
IC2 : LC72131 MA143A or
1SS302
Q1,6,7 : 2SC4081(R,S) or D3 : MTZJ8.2(B) or
2SD1819A(Q,R) HZS8.2N(B2)
Q2,12,14 : 2SA1576A(R,S) or D4 : MTZJ5.1(B) or
2SB1218A(Q,R) HZS5.1N(B2)
Q10,11 : 2SD1757K D5 : MTZJ2.7(B) or
HZS2.7N(B2)
A1 : D8,11,13 : MA111
6
D9 : MTZJ3.3(B) or
HZS3.3N(B2)
The DC voltage is an actual reading measured with a high impedance type volt-
meter 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 instru-
ments used or on the product. The value shown in ( ) is actual reading measured in
the AM made.
MODULATION
MODE CARRIER
FREQUENCY
FM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot)
7
AM 1000(999)kHz 400Hz MONO 30% MOD
C D
C40 2P
L9
10uH
D1
R42
R41 10K
100K
L1
L2
1uH
FM FRONT END
MIX DISTORTION(ST)
VT 5
IFT
TR1
R4 C9 IF-OUT 7
0-100 5P
FET1
R5 R11
100 0-100 VCC
6
C23 OSC 8
TR2 100P
C19
OSC
8P
TR3
OSC
BUFFER
FM FRONT END
MIX DISTORTION(ST)
IFT
TR1
R4 C9 IF-OUT 7
0-100 5P
FET1
R5 R11
100 0-100 VCC 6
C23
OSC 8
100P
TR2
C19
OSC
10P
TR3
OSC
BUFFER
KRF-V8010D (X05-4932-70)
DESTINATION
W58,
UNIT No. A1
86
COUNTRY ABB.
EUROPE E
U.K. T 2-70 NO W02-2584-05
AUSTRALIA X
KRF-V8010DW (X05-4933-81)
DESTINATION
W58,
UNIT No. A1
86
COUNTRY ABB.
RUSSIA Q 3-81 YES W02-2586-05
SIGNAL LINE
GND LINE
+B +B LINE
-B LINE
B
ANT INPUT
DEVIATION
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to
60dB
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
60dB
(exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
E F
CN2
1 2
FM
+
TUNED
+
C24
330P R25 C26
27K 0.018
+
REG
AM AM AM
ALC
OSC MIX RF.AMP
BUFF
AGC
DET
AM IF
SD
COMP
AM
S-METER
FM AM/FM
S-CURVE
S-METER IF-BUFF
TUNING STEREO
DRIVE DRIVE
FM
FM IF
DET
GND VCC
L3
C81
8.1V
1
+ (8.1V)
+B
C76
47P
IF AMP
+B
C5
6.6V 0.01 R11
22
6.0V
Q2
1.6V R87
R1 C1
Q1 1M
100 0.022
C84
0.022 CF2
1.0V 1.2V
+
CF1
R44
+
270
+B
1/4W
R51
5.6K +
+
+
PLL
2.5V
0.9V
IC2
1/2
REFERENCE PHASE DETECTOR
DIVIDER CHARGE PUMP SWALLOW COUNTER 12bits PROGRAMABLE
1/16,1/17 4bits
DIVIDER
POWER
UNLOCK
ON
DETECTOR
RESET
2
C B I/F DATA SHIFT REGISTER LATCH UNIVERSAL COUNTER
X1
7.2MHz
C44
470P
Published in Heiloo, Holland.
G H
R35
+ + Q7
100
IC1
FM, MPX C37 R33
10u10 1K
AM SYSTEM
+
4.4V
C38
2.8V (4.4V)
10u10
(2.8V)
+
DECODER
ANTI-BIRDIE
P-DET STEREO
SW
MUTE
VCO FF FF FF PILOT
304kHz 38k 19k 2 19k 8 DET
7.0V
(4.0V)
C17
+ +
Q6
1u50
+
R38
+
1K
L4 L5
+
R81
150
+B
1W
R84
1K
L6
+B
L7
+B
10.9V
FM +B
Q14
+B
3.4V
11.0V
R59
T. MUTE
1.2K
10.3V
DRIVE
C86
470P
W86
R48 1K
6
R47 1K
5
R46 1K
4
R45 1K
3
KRF-V8010D/V8010DW
Y05-3822-70
I 12/21/15 J
CN1
15 DET
14 S-LEVEL
13 SD
12
STEREO
11 Rch
C83
0V
Q10 MUTE 100P
10 GND
X09-A/3
-CN9
0V -2.2V
3/4
9 Lch
A
C71
8200P
+15V 8 +15V
0V
R74
47K W4
15V 7 -15V
-2.2V
Q11 6
T. MUTE
4 PLLDATA
0V 5
5 4 PLLCLK
3 3 PLLCE
6 2 PLLDO
MONO
1
3.5V
Q12 R76
1.8K
2.8V
R77
1K
W58
KRF-V8010D(E) (1/4)
KRF-V8010DW(Q) (1/4)