Kenwood R-SG7 Service Manual page 13

U V
(X05-4882-70) : (E,T)TYPE
L63 10uH
C68 2P
3.7V
1.8V(1.5V)
R2
220
+12V +12V
Q1,2
FM IF
AMP
2.1V 10.6V
C5 C6 CF2
0.01 0.01
Q2
10.6V
2.1V
1.4V
Q1
CF1
1.4V
C69
12.1V 0.01
RF ATT
0V
12.3V
Q3
R17
620
R20
1.2K
12.3V
+B
W X
DISCRI
CN2
1 2
BUFFER
3.1V
Q31
R41
2.6V
2.2K
R42
47K
+
+
2.9V
3.6V
0V(1.1V)
3.6V
2.8V(3.9V)
4.1V(1.3V)
R35
3.6V
33K
L31
L33
+ +
C37
1
L32
AM IFT
R59
2.2K
+
8.3V
R31 DISCRIMINATOR
82 1W
+B
VT
1.0V
C82
27P
2.5V
IC2
PLL
IC
REFERENCE
PHASE DETECTOR
DIVIDER CHARGE PUMP
UNLOCK POWER
ON
DETECTOR
RESET
2
C B I/F DATA SHIFT REGISTER LATCH
2.5V
C81
22P
C92 470P
+B
+12V
Y Z
+12V
L34
12.3V
B.P.F
2.9V
C50
1000P
C53 0.022
C54 0.022
C56 R46 L36
2.2u35 1.2K
+ +
+
+
C55 R45
2.2u35 1.2K
+
3.6V
R47
IC1 3.9K
L35
FM/AM/
MPX
SYSTEM
IC
1.7V 7.3V
6.8V(0V)
FM/AM
R49
SW
Q32
47K
+
+ + +
0V(0.6V)
C95
47P
+B
R90
5.6K
R94
+B +B
560
1/4W
0V
2.5V(0V) 0V(2.5V)
0V
12.1V(0V)
1/2
FM
SWALLOW COUNTER
12bits PROGRAMABLE
1/16,1/17 4bits DIVIDER Q81
UNIVERSAL COUNTER
R84 10K
0V(9.7V)
12.3V
+B
+12V
AA AB
+12V +12V
DET-OUT
IC3(1/2)
8
5
+
7
6
-
R54 7.0V
2.9V
4 68K
BUFFER
4.3V
IC3(2/2)
R50
10K R51 R53
3 D33
+ 1K 1K
1
2
-
4.3V
R48
3.9K
12.3V
+12V +12V
12V
R89
100
4
1/4W
5
L81
3
1uH
6
0V
-12.7V
MUTE
ON:0.6V
OFF:-2.2V
Q101
R104 47K
12V
MUTE
CONTROL
R93
1.2K
Q102 Q103 R101
1K
11.5V
(12.0V)
0V
D101
3.6V
MUTE ON:0V
MUTE OFF:4.8V
+12V
Y05-3960-21
AC AD
CN1
DET-OUT
15
14 S-LEVEL
13 SD
X09-A/8
STEREO
12 -E3
11 Rch
3/3
10 GND
Lch
9
+12V B
8
7 -12V
T.MUTE
6
PLL-DATA
5
4 PLL-CLK
3 PLL-CE
PLL-DO
2
1 NC
R-SG7/SG7G (2/3)
R-SG7/SG7G