Kenwood RXD-M32MD Service Manual page 24

U V
Q Q
TUNER UNIT (X14-714X-XX) (A/6)
3 7 6 3 1 5 1 5 0
1
2
(K,P,M,M1,X) TYPE
A1 (W02-2622-05)
1 ANT1
2 ANT2
GND
3
3
4 GND
FET : 2SK302
TR1 : 2SC2714
TR2,3 : 2SC2413
D1-3 : HVU202 or
T E
L 1 3 9 4 2 2 9 6 5 1 3
(T,T1,E,E1,H,H1,E2,E3) TYPE
4
A1 (W02-2584-05)
E1
J7
C1 C2 C4
1 1 ANT1 27P 15P 0-5P
FM 75
L2
2 2 GND
3
GND
D1
4
3 GND
AM ANT
4 GND
FET1 : 2SK302
5 TR1 : 2SC2714
TR2,3 : 2SC2413
D1-4 : SVC220 or
KV1440
(J) TYPE
A1 (W02-2621-05)
6 1 ANT1
2 ANT2
3 GND
w w w
4 GND
FET
TR1
TR2,3
D1-3
D4
7
W X
D1
R41
100K
L1
L2
1uH
FM FRONT-END
MIX DISTORTION(ST)
VT 5
IFT
TR1
RF AMP R2 C4 IF-OUT 7
0-100 3P
C2
FET
10P
R14
68
+B 6
OSC
R11 C17 8
OUT
100K- 100P
OSC
680K
C13
TR3
8P
C14 TR2
OSC
27P
BUFFER
1T362
FM FRONT-END
MIX DISTORTION(ST)
IFT
TR1
RF AMP R4 C9
0-100 5P
C6
FET1
10P
R5 R11
100 0-100 VCC
C23 OSC
TR2 100P
C19
OSC
TR3
8P
OSC
BUFFER
FM FRONT-END
MIX DISTORTION(ST)
VT 5
IFT
TR1
RF AMP
R2 C4
0-100 5P
C2
FET
15P
R14
68
VCC 6
R11
x a o
100K-
: 2SK302 680K
OSC
OSC
C13
: 2SC2714 TR3
BUFFER
: 2SC2413 8P TR2
. i
C14
: HVU202 or
7
1T363 27P
: HSU277 or IF-OUT
1SS356
OSC
8
Y Z
CN4
1 2
FM TUNED
ADJ
R23
R3
680
R42
10K
AM RF
AM AM
ALC
OSC MIX
BUFF
C83
FM
S-CURVE
S-METER
FM
FM IF
DET
+B
+
Q Q
3 7
R43
220
FM IF AMP
6.6V
ATT
VT 5
6.0V
Q2
1.6V
R1 C88 A C1
7 100 3300P CF1 0.022
C84
IF-OUT 0.022
Q1
1.0V
1.2V
+
+
6 6.9V
+B
8
+12V
R51
+ 5.6K
+
+
2.5V
0.9V
REFERENCE PHASE DETECTOR
DIVIDER CHARGE PUMP
POWER
UNLOCK
DETECTOR ON
RESET
2 DATA SHIFT REGISTER LATCH
C B I/F
u 1 6 3
y
X1
7.2MHz
C44
470P
AA AB
2 4
8 9
+
+
C24
330P R25 C26
IC1 +
FM DET/MPX
+ AM DET
2.8V
(2.8V)
REG
DECODER
ANTI-BIRDIE
AM
RF.AMP
P-DET
STEREO
SW
AGC
MUTE
AM IF DET
FF
VCO FF
SD
304KHz 38K 19K
2
COMP
AM
S-METER
AM/FM
IF-BUFF
TUNING STEREO
DRIVE DRIVE
GND
VCC
2.3V
(2.8V)
4.3V
(0V)
L3
+
C81
1
+B +B
6 3 1 5 1 5 0 8
L4 L5
+
10.8V
+B
C5
0.01 R11
G
L4
DISCRIMINATOR
CF2
E
+B
R84 1K
R44
+B
270
1/4W
+12V
PLL
IC2
11.8V
FM +B
1/2
Q14
+12V
SWALLOW COUNTER 12bits PROGRAMABLE
1/16,1/17 4bits DIVIDER
R59
10.3V 1.2K
m
C86
470P
UNIVERSAL COUNTER
c o
.
R48 1K
6
R47 1K
5
R46 1K
4
R45 1K
3
AC AD
2
9 8 9 9
Q3
C33 R31
47K
0.01
0V
0V
0V
+
[0.6V]
C37 R33
10u16 1K
R30
C34 560
+
0.01
4.4V C38
Q4
(4.4V) 10u16
0V
+
DE-EMPHASIS
75uS: ON
50uS: OFF
B
50uS
[75uS]
FF
PILOT
19K 8 DET
S LEVEL
F
BUFFER
8.0V
7.0V
Q6
(4.0V)
R38
1K
4.3V
+ 3.7V
+
R39
10K
+
+
+B
C90
9 2 4 9 8 2 9 9
4700P
C89
4700P
11.9V
R81
82
+12V
1W
W682
L6
C70
6800P
W683
L7
C71
6800P
+12V