Kenwood RXD-951 Service Manual page 27

AO AP
TUNER UNIT
(X05-4890-XX) RXD-V616/V818/V919(M,I) RXD-A700/(K,P,X) RXD-A900(K,P) RXD-951(M,M5,I,Y,X)
(X05-4922-10) RXD-V616/V818/V919(V)
The DC voltage is an actual reading
1
measured with a high impedance type
voltmeter as the AM/FM signal genera-
tor is specified to the conditions as
shown in the list below. The measure-
ment value may vary depending on the
measuring instruments used or on the
product. The value shown in ( ) is actu-
al reading measured in the AM made.
L3
1uH
A1 (W02-2638-05)
2
D1
D2
J1
1 ANT1
Ω
FM 75
Ω
FM 300 GND
2 ANT2
AM ANT
3 GND
3
X
W115
7 GND
J2 TR1
TR2-4
D1,2
CAUTION: For continued safety, replace safety critical components only with manufac-
turer'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
4
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 cir-
cuit) before the appliance is returned to the customer.
RXD-V616 (X05-4XXX-XX)
DESTINATION C21, W115,
UNIT No. C J1
22 116,119
COUNTRY ABB.
GENERAL MARKET M4 E20-0476-05 or
X05-4890-20
MALAYSIA I4 E70-0051-05
YES 0.012 YES
SHANGHAI V4 X05-4922-10 E70-0079-05
RXD-V818 (X05-4XXX-XX)
DESTINATION
C21, W115,
UNIT No. C J1
22 116,119
COUNTRY ABB.
GENERAL MARKET M3 E20-0476-05 or
5
X05-4890-20
MALAYSIA I3 YES 0.012 YES E70-0051-05
SHANGHAI V3 X05-4922-10 E70-0079-05
RXD-V919 (X05-4XXX-XX)
DESTINATION C21, W115,
UNIT No. C J1
116,119
COUNTRY ABB. 22
GENERAL MARKET M2 E20-0476-05 or
X05-4890-20
MALAYSIA I2 YES 0.012 YES E70-0051-05
SHANGHAI V2 X05-4922-10 E70-0079-05
RXD-A900 (X05-4890-11)
DESTINATION C21, W115,
UNIT No. C J1
22 116,119
COUNTRY ABB.
U.S.A. K1 E20-0476-05 or
0-11 NO 0.018 NO
E70-0051-05
CANADA P1
6
RXD-A700 (X05-489X-XX)
DESTINATION
C21, W115,
UNIT No. C J1
22 116,119
COUNTRY ABB.
U.S.A. K2
0-11 0.018 E20-0476-05 or
CANADA P2 NO NO
E70-0051-05
AUSTRALIA X2
0-71 0.012
RXD-951 (05-489X-XX)
DESTINATION C21, W115,
UNIT No. C J1
116,119
COUNTRY ABB. 22
GENERAL MARKET M1
GENERAL MARKET M5
0-20 YES YES E20-0476-05 or
MALAYSIA I1 0.012
E70-0051-05
PX Y1
AUSTRALIA X1 0-71 NO NO
7
AQ AR
MODULATION
MODE CARRIER
FREQUENCY
FM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot)
AM 1000(999)kHz 400Hz MONO 30% MOD
FM FRONT-END
J2 0
R2 C2 D1 C6
TR2
TR1
C20 J4 33 3P 4P
12P 0
R7
100K
TR4
C9 C12
2P 12P
TR3
:2SK360
:2SC2413K or 2SC2778
:1SV225 or HVM16
VT VOLTAGE
BAND FREQ VT VT
LF 2.0V
FM
HF 7.3V
5.4V
LF 1.4V
(98MHz)
AM
HF 4.9V
+
J2
2.6V
F10-0945-04
F10-1074-04
IC2
PLL
3.0V
J2
F10-0945-04
REFERENCE
F10-1074-04
DIVIDER
J2
1
2
F10-0945-04
F10-1074-04
J2
F10-0945-04 C2B I/F DATA SHIFT REGISTER LATCH
J2
F10-0945-04 2.6V
X1
7.2MHz
R20 1K
J2
R23 1K
R22 1K
C38
F10-0945-04
470P R21 1K
AS AT
ANT INPUT
DEVIATION
L1
60dB
60dB
DISTORITON (ST)
R43 R45
VT 5
220 1/4W 10K
+
T1
10.2V(0V)
J1 R10
VCC 4
+B
0 180
+
R44
8 100
IF-OUT
OSC 6
R24 R25
5.6K 100
+12V
1/4W
12.2V
+ +
5.1V
C52
47P
C28 R27 1K
0V
0.022 1.0V 0V
1.0V 5.2V
0V
2.6V
PHASE DETECTOR UNLOCK
CHARGE PUMP DETECTOR
SWALLOW COUNTER 11.9V(0V)
1/16, 1/17 4bit
12bit
FM
PROGRAMMABLE
Q3
DIVIDER
+12V
12.4V
R32
UNIVERSAL
COUNTER
1.2K
0V
11.6V
4.0V
2
4
5
3
AU AV
+5V
C3
4P
C8
R40 3.7V
1K (3.8V)
0.01
ALC
BUFF
R6
FM IF
AMP
100
2.0V 10.5V
Q1
CF2
LEVEL
CF1
DET
1.3V
FM
IF
11.9V
2.2V
+
+5V
BAND
SW
+12V +12V
AW AX
+
+ 2.3V
(2.1V)
IC1
2.3V 1.7V
(2.1V) (2.0V)
AM/FM
SYSTEM
IC
5.2V
AM AM AM
OSC MIX RF.AMP
AGC
AM
IF
S-CURVE
AM/
FM
IF
COMP
BUFF
FM
DET
TUNING
DRIVE
REG GND
0V
2.2V
2.1V
5.2V
AM IFT
L2
+5V