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Through-Hole Logic Board
Through-Hole Logic Board
Through-Hole Logic Board
Through-Hole Logic Board
LP6 Plus, LP10, and LP20 Technical Manual
November 2000
Page 7-7
Page 7-7
Page 7-7
Page 7-7
Through-Hole Logic Board
Through-Hole Logic Board
Through-Hole Logic Board
Through-Hole Logic Board
A10
A1
1
1
A13
A14
A15
A12
+5V
NC
NC
NC
C19
.01
C18
.01
+12V
D7
+5V
D4
D5
D6
D1
D2
D3
D0
4050
EN
EN
EN
CR5
1N4148
24
W
T
C20
.01
28
C21
.01
CLK<
25
23
18
13
17
26
RES
6
16
27
INT
M1
W
R*
W
R
10
7
9
15
12
8
Z80A
(SOCKET)
4
14
5
2
3
22
10K R5
+5V
10K R1
+5V
6
A7
IO*
W
R*
5
4
C
3
A5
A6
B
A
2
1
5
CTCRD
R6,
10M
U8D
1/4
W
,5
%
1M
C3
.1
R7
9
10
4
MHz U27
7
8
0
1
14
+5V
CTCWR
DASPEED
DAMETER
BITSOUT
MOT
OUT
PRINTSTB
ADSEL
CLKW
R
U7B
74LSO8
5
10
W
RITE
U22
74LS138
7
6
7
9
2
13
4
3
11
12
1 0
14
15
J
L
4
K
6
SH
3
SH
2
H
SH
3
I
G
SH
2
SH
3
SH
2
10
3
25
24
21
23
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A6
A12
A1
1
A10 A9
A8
A7
A0
A3
A5
A4
A2 A1
EN
EN
EN
EN
EN
EN
35
U28
38
39
40
36
37
21
RD
MEM
33
34
30
32 31
20
IO
19
RD*
RD*
+5V
6
5
IO*
MEM*
A6
A7
IO*
4
C
B
3
2
A5
A
1
74LS08
RD*
2
1
3
C
A15
MEM*
3
6
5
4
U7A
A14
A13
1
2
A
B
CTCRD
CLKRD
MOTRD
SW
RD1
DISSTB
SWRD2
ADREAD
SWRD3
U21
74LS138
READ
7
6
5
7
9
10
4
3
2
11
12 13
1 0
14
15
E
SH
2
SH
3
F
SH
2
D
SH
2
C
RAM
EEPROM
LEDOUT
OUT
12
3
74LS138
MEM
U23
9
6
7
7
NC
11
10
4
5
15
0
14
13
1
2
NC
ROM0
ROM2
SH
2
B
SH
2
A
A0
A2
A3
A4
A5
A6
A7
A8
A9
A10
A1
1
A12
RD*
WR*
A1
1
A12
2
22
OE
U25
2764-0
(SOCKET)
A8
A10 A9
A6
A7
4
D6
D7
18
19
D7
D6
11
CE
A3
A4
A5
7
6
5
A0
A1
A2
9
8
D3
D4
D5
15
16
17
D0
D1
D2
12
13
27
+5V
1
26
ROM0
20
/
D0
D3
D5
D4
D2
D1
A1
A6
A1
1
A12
2
22
OE
A10
A8
23
24
21
A9
25
3 4
A7
A6
U26
2764-2
(SOCKET)
D7
D6
19
18
D6
D7
A9
A7
A8
10
CE
5
6
7
A5
A4
A3
8
9
A2 A1 A0
D5
D4
D3
D2
D1
D0
20
ROM2
+5V
26
11
27
D0
11
A0
D3
17
16
15
D4
D5
13
12
D1
D2
A3
A4
A5
A1
A2
CLKWR
6.
INST
ALL
U1
PIN
1I
N
PIN
3
LOCA
TION
OF
R33
100K
R35
1K
Q6
2N2907
R36
4
18
D7
A0
11
1
10
2
3
9
17
15
12
14
RES
MHz
CLK
INT
M1
A1
74LS293
13
12
4
U1
1
19
A1
Z80
CTC
1
D4
D5
D6
2
3
D2
D3
27
28
I0
Z02
TR3
IEI
RD
D0
D1
25
26
U9
CE
RD*
9
20
13
6
10
IO*
A0
16
+5V
D7
22
8
A3
TP1
4M,
1MOL
TO
D
CLOCK
CALIBRA
TE
CLKRD
D0
3
2
4
1
1
12
RDY
4
GND
CE
X1
10
3-32
C1
pf
XT
AL
1
32
KHz
C2,
22
11
X2
9
A4
pf
W
R
PWDN
INT
OUT
STBY
INT
21
D4
D6
D5
D3
D2
19
56187
20
U10
17
18
15
CLKRD
D1
D0
2
RD
16
N.C.
N.C.
A0
6
7
A1
A2
5
13
14
+5V
24
23
3
+
500
KHz
SH
3
S
1.
UNLESS
OTHER
W
ISE
SPECIFIED,
ALL
RESIST
OR
VALUES
ARE
IN
OHMS,
1/8W
,1%;
ALL
CAP
ACIT
OR
VALUES
ARE
IN
MICROF
ARADS;
ALL
DIODES
ARE
1N4148.
POSITION
2.
MODE
SW
ITCH
TRUTH
TABLE
(REF)
3.
TWO
PADS
FOR
ST
ANDOFF
BOTH
SIDES
OF
J10
TO
CHASSIS
GND
(REF)
PLUS
EXTRA
W
IRE
PAD.
28
PIN
PA
TTERN
AND
INST
ALL
JP1
AS
SHOWN.
5.
FORM
LEADS
ON
SW1,
SW2,
SW3
AND
SW4
AS
4
SH
2
1K
1/2
W
1%
+5V
R34
4.75K
DISABLE
Q5
2N2907
+5V
CLOCK
SH
2
AX
Q
R
1
2
3
.
SHOWN
COM
SECTION
3
4
SECTION
1
COM
3
2
1
D0
D1
D2
D3
D4
D5
D6
D7
4
1
1
SWRD2
D7
D6
D5 D4
15
17
OE
11
13
19
18
16
14
12
OE
5
74LS795
D0
9
D3
D2
D1
3
7
5
8
2
6
4
2
+5V
U4
1
RP6
10K
+5V
10K
2
3
2
4
8
1
C
SW
3
INS
TIME
3
RP2
P
N
1
RP6
10K
+5V
SH2
SH2
SH2
SH2
M
O
23
1
26
WR
WR*
2
22
OE
CE
A8
21
24
27
A10 A9
25
3 4
A7
A6
6264 U1
D7
D6
3
2
NC
+5V
19
18
D6
D7
JP1
1
15
12
11
10
CE
5
6
7
A5
A4
A3
8
9
A2 A1
A0
D5
D4
D3
D2
D1
D0
RAM
20
D0
D3
17
16
D4
D5
13
D1
D2
A6
(SOCKET)
20
RD*
OE
23
22
19
A10 A9
A8
A7
A8
A10 A9
A6
A7
2
1
21
W
R*
WR
D7
D6
16
17
D7
D6
18
U24
2816
CE
8
A0
A3
A5
A4
A2 A1
A3
A4
A5
5
4
3
A0
A2 A1
7
6
EEPROM
D0
9
D3
D4
D5
13
15
14
D0
D1
D2
11
10
D3
D5
D4
D2
D1
9
7.
SQUARE
PADS
ON
PC
BOARD,
ITEM
1,
INDI-
CA
TES
PIN
1,
(+)
POLARITY
,O
R
CA
THODE
OF
A
COMPONENT
.
8.
ENSURE
INSULA
TO
R
IS
NOT
PINCHED
BETWEEN
SWITCH
SHOULDER
AND
P.C.B.
BEFORE
FASTENING.
16
OE
SWRD3
17
15
OE
19
1
18
3
2
13
11
14
12
74LS795
5
7
U6
4
6
4
HIGH
PRESS
8
SW2
8
2
1
4
2
SW1
C
C
7
HIGHEST
REF
DESIGNA
TION
USED
C74
CR8
P5
TP2
U28
J12
R36
Q6
JP1
RP7
SW5
XDCR1
XT
AL1
REF
DESIGNA
TION
NOT
USED
P1
THRU
P3
J1
THRU
J8
8
DX
5
6
10
3
8
1
1
+5V
RP1
10K
1
1
1
1
SP
ARE
LOW
PRESS
4
9
2
1
NC
13
1
1
1
12
+5V
11
U7D
74LS08
Reference only
Reference only
Reference only
Reference only
Содержание LP6 Plus
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