Kenwood TK-80 Service Manual page 124

A
SELECTIVE CALL UNIT (KPE-1) (OPTION) (X52-3300-20)
C1
0.1u
24mVrms
CN1
L3
1 AF
AF
18u
AFG
AFG
TX-RX
MIC
-CN13
MIC
4 MICG
MICG
Note : The components marked with a dot (
B
KPE-1 (SCHEMATIC DIAGRAM)
5.0V
L1
18u
1
SIGNAL
PRE AMP
2
3
4
LOCK
DETECTOR
5 COMPARATOR
6
7
TP1
R2
4.7k
R3
4.7k
5.0V SN74ALS04BNS
1
2
0V
3
0V
4
5
0V
6
3.6V
7
GND
DTMF DECODER
1
IN+
C10 R14
2
IN-
0.01u 47k R15
3
GS
680k
4
VREF
5
B/H
6
5.0Vp-p
PD
7
X1
8
X2
9
X1
GND
3.5795MHz
• ) are parts of layer 1.
C
FSK DEMODULATOR
IC1
NJM2211M
14
13
VCC
12
QUAD LOOP
DET DET
11
10
INTERNAL
1.8V
REFERENCE
9
8
FSK
COMPARATOR
S1
TEST TEST
USE USE
R4 R5
470k 39k
5.0V
BUFFER
IC2
14
VDD
0V
D4-6
LED
13
4.4V MARK 5.0V
D4
R11
12
B30-2004-05 470
11
SPACE
4.4V 0.2V 2.1V
D5
R12
10
B30-2004-05 470
9
LOCK
0.2V 2.1V
D6
R13
8
B30-2004-05 470
IC3 5.0V
LC7385M
18
VDD
17
ST
R16
16
EST
330k
15
STD
14 5.3V
Q4
13 5.3V
Q3
12 5.3V
Q2
11 5.3V
Q1
10
TOE
D E
TK-80
CN2
0V 12
DGND
DGND
3.6V
FSL
FSL
0V
FSD
FSD
5.0V
5A
5A
0V
DGND
DGND
STD
STD
CONTROL
Q4
-CN2
Q4
Q3
Q3
Q2
Q2
Q1
Q1
0V
TOE
TOE
0V
DGND
DGND
1
X52-330 1/1
1
2
3
4
5
6
7
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