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DIGITAL IO BOX
CIRCUIT DIAGRAM
CONTENTS
MAIN ··································································· 3 CN····································································· 13 WC ···································································· 14 LED3 ································································· 15 PWCOM···························································· 16
WARNING
Components having special characteristics are marked specification equal to those originally installed. and must be replaced with parts having
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C
B
A
MAIN CIRCUIT DAIGRAM 002 (DIO8)
TRANSCEIVER
DIO8
1
SYSTEM RESET TRANSCEIVER
2
SRAM 1M
FLASH ROM 8M
Not Install
3
TRANSCEIVER AND CPU
4
5
6
SRAM 1M
COUNTER OR
TRANSCEIVER
7
DECODER TRANSCEIVER TRANSCEIVER TRANSCEIVER D-FF OR AND LINE TRANSCEIVER DECODER TRANSCEIVER OR
8
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11
12
AND TRANSCEIVER
13
14
D-FF
15
16
TRANSCEIVER
KEC-92497-2
TRANSCEIVER
MAIN CIRCUIT DAIGRAM 002 (DIO8)
3
17
P 1
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F
E
SYSTEM RESET NAND
D
C
SYSTEM RESET
B
A
MAIN CIRCUIT DAIGRAM 003 (DIO8)
DIO8
INVERTER
INVERTER NAND
2
PROM 1M NAND
AND
3
INVERTER DIR2 DIR2
AND
4
FPGA INVERTER
5
TRANSCEIVER
6
7
DIR2
SYSTEM RESET
INVERTER
8
NAND REGULATOR+2.5V INVERTER TRANSCEIVER
NAND
9
TRANSCEIVER
10
DIR2 DIR2
11
INVERTER TRANSCEIVER AND
: Metal Film Resistor : Mylar Capacitor
12
KEC-92497-3
MAIN CIRCUIT DAIGRAM 003 (DIO8)
4
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B
A
MAIN CIRCUIT DAIGRAM 004 (DIO8)
DIO8
1
2
TRANSCEIVER TRANSCEIVER TRANSCEIVER TRANSCEIVER
3
TRANSCEIVER
TRANSCEIVER
TRANSCEIVER
TRANSCEIVER
4
5
6
7
DSP5 DSP5
8
9
10
11
KEC-92497-4
MAIN CIRCUIT DAIGRAM 004 (DIO8)
5
12
K
J
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H
G
F
E
D
C
B
A
MAIN CIRCUIT DAIGRAM 005 (DIO8)
1
LINE RECEIVER
DIO8
2
3
4
LINE RECEIVER
5
6
7
LINE RECEIVER
8
LINE DRIVER
KEC-92497-5
MAIN CIRCUIT DAIGRAM 005 (DIO8)
6
LINE RECEIVER
LINE RECEIVER
K
J
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H
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F
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D
C
B
A
MAIN CIRCUIT DAIGRAM 006 (DIO8)
DIO8
1
2
ATSC
ATSC
3
4
5
6
ATSC ATSC
7
8
KEC-92497-6
MAIN CIRCUIT DAIGRAM 006 (DIO8)
(IC201)
7
K
J
I
H
G
F
E
D
C
B
A
MAIN CIRCUIT DAIGRAM 007 (DIO8)
1
LINE DRIVER
DIO8
2
3
4
5
7
LINE DRIVER
6
LINE DRIVER
LINE DRIVER
8
LINE DRIVER
LINE RECEIVER
KEC-92497-7
MAIN CIRCUIT DAIGRAM 007 (DIO8)
8
K
J
I
H
G
F
E
D
C
B
A
MAIN CIRCUIT DAIGRAM 008 (DIO8)
LINE RECEIVER
DIO8
1
2
LINE RECEIVER
3
4
LINE RECEIVER
5
LINE RECEIVER
6
7
LINE RECEIVER
LINE DRIVER
8
KEC-92497-8
MAIN CIRCUIT DAIGRAM 008 (DIO8)
9
K
J
I
H
G
F
E
D
C
B
A
MAIN CIRCUIT DAIGRAM 009 (DIO8)
1
DIO8
2
ATSC
ATSC
3
4
5
6
ATSC ATSC
7
8
KEC-92497-9
MAIN CIRCUIT DAIGRAM 009 (DIO8)
(IC202)
10
K
J
I
H
G
F
E
D
C
B
A
MAIN CIRCUIT DAIGRAM 010 (DIO8)
LINE DRIVER
DIO8
1
2
LINE DRIVER
3
4
LINE DRIVER
5
6
LINE DRIVER
7
LINE DRIVER
LINE RECEIVER
8
KEC-92497-10
MAIN CIRCUIT DAIGRAM 010 (DIO8)
11
H
G
F
E
D
C
B
A
MAIN CIRCUIT DAIGRAM 011 (DIO8)
1
DIO8
2
3
4
5
KEC-92497-11
MAIN CIRCUIT DAIGRAM 011 (DIO8)
6
12