Kenwood TK-80 Service Manual page 93

F
CONTROL UNIT (X53-3570-21)
CN2
1
2
3
2
1
4
5
6 5
6
7
8
9
5
10
5A
UDA
UCK
10
14V
9
IC6
AT93C66A10SU27
EEPROM
MCS
10 1
PCK
2
MDI
3
5C
PDA
4
ULK
5
AMUT
9
14S
8A
DGND
CN4
Note : The components marked with a dot (
G
SEL-CALL-CN2
(OPTION)
6
1
5.3V
2
1
NC
5.3V 2
3 CS
0V
3
GND
0V 4
4
A1
5.4V
5
IC7
5 A0
6 UPD71055GB-3B4
NC
0V
7 I/O PORT
FEN4
0V
8
1 FEN3
0V 9
2 FEN2
0V
10
3 FEN1
5.0V 11
7
4 VEN1
13
0V
6
8
13
SN74ALS04BNS
C57 1
2
5.4V 1000p 0V
3
4
14
0V 5.0V
R102
10k
13
•
) are parts of layer 1.
H
SCHEMATIC DIAGRAM
FINAL-CN3
CN3
3
4
6
R95
1k
33
NC
32 0.2V
RES 3
5.3V
31
D0 1
30 5.3V
D1 2
5.3V
29
D2 3
5.3V
28
4
D3
5.3V
27
D4 5
5.3V
26
D5 6
25 5.3V
D6 7
5.3V
24
D7 8
23 5.0V
VCC
4
2
1
15
5
IC8
BUFFER
5.4V
0V
14
TX-RX-CN14
I
TK-80
0V
0V
C94 0.1u
5.0V 0V
5.0V
C95 0.1u
1
14.0V
C96 1000p
R122
5.0V
4
220 C97 1000p
R123
5.0V
3
220 C98 1000p
R124
0V
5
220 C99 1000p
R125 0V
6
1k C100 1000p
R126 0V
4
220 C101 1000p
R127 0V
3
220 C102 1000p
R128 0V
2
1
220 C103 1000p
R129 0V
1
220 C104 0.01u
0V
5.0V
C105 0.01u
R130 0V
2
100 100 C106 0.01u
R131
0V
1
100
0V
L8
R119
18u
15 100k C92 0.01u
R118 0V
1
470 C91 0.01u
R117 0V
7
8
220 C90 0.01u
R116 0V
6
220 C89 0.01u
R115 0V
5
220 C88 0.01u
R114 0V
220 C87 1000p
R113
220 C86 1000p
R112
220 C85 1000p
R111 0V
4
220 C84 0.01u
R110 0V
3
220 C82 1000p
R109 0V
2
220 C81 0.01u
R108 0V
2
220 C80 1000p
R107 0V
1
220 C79 0.01u
R106
0V
3
220
0V
14
J
1
2
CN6
1
DGND
2
DGND
3
5A
4
14S
5
ATI
6
SPED
7
APRE
8
ATA
9
PR11
3
10
PR12
11
PR21
12
PR22
13
ATG
14
VREF
15
POD2
16
POD1
4
CN5
16
GND
15
VDLY
14
VB1
13
VB2
12
VB3
11
ULK
10
PCK
5
9
PDA
8
PEN1
7
PLS
6
NC
5
DEN1
4
CASL
3
DEN2
2
ABSL
1
GND
6
7
83
X53-357 2/2