HP 9830 - Display System

4
15
N42.F
N42.E
N42.6
N42.7
N42.4
N42.5
N42.D
23
A4
16
U42-a1
TMS4100
ZA 5705
T-04163
1
D0
3
D1
5
D2
7
D3
9
D4
11
D5
13
D6
A5
24
A3
25
A2
DRERA
27
A0
26
A1
18
Ca
19
Cb
21
Cd
20
Cc
22
Ce
17
14
11 of
2.2K
7 of
2.2K
V+12
V+12
V+12
2
1
U42-c5
3
2
5
4
6
U42-d7
8
12
13
1
11
10
9
U42-d7
3
2
5
4
6
U42-d5
U42-d5
3
2
5
4
6
U42-d6
U42-d6
4
3
U42-c5
6
5
U42-c5
8
9
U42-c5
10
11
U42-c5
12
13
U42-c5
N42.X
DO15
N42.U
DO9
N42.20
DO14
N42.17
DO8
N42.W
DO13
N42.T
DO7
N42.19
DO12
N42.16
DO6
N42.V
DO11
N42.S
DO5
N42.18
DO10
N42.15
DO4
12
G47
23
U42-d1
74100
5
Q0
4
Q1
19
Q2
20
Q3
8
Q4
9
Q5
18
Q6
G03
2
D0
22
D2
3
D1
21
D3
11
D4
15
D6
10
D5
16
D7
17
Q7
4
3
U42-b1
6
5
U42-b1
8
9
U42-b1
10
11
U42-b1
12
13
U42-b1
2
1
U42-b2
2
1
U42-b1
500pF
N42.3
nDEN
N42.C
DO0b
2
U42-d3
9
8
U42-d2
13
11
U42-d3
5
6
U42-d3
3
U42-d2
5
6
U42-d2
9
8
U42-d2
1
3
DRERB
DRERC
DRERD
DRERE
DRERF
DRERG
V–12
N42.L
DRELA
N42.10
DRELB
N42.K
DRELC
N42.9
DRELD
N42.J
DRELE
N42.8
DRELF
N42.H
DRELG
4
3
U42-c1
6
5
U42-c1
8
9
U42-c1
10
11
U42-c1
12
13
U42-c1
4
3
U42-b2
2
1
U42-c1
N42.11
DCA0
N42.M
DCA1
N42.12
DCA2
N42.N
DOFF
2.2K
10
12
4
1
4
10
2
6
5
U42-b2
180
6V
3 of
0.01
47
20V
V+12
47
20V
V–12
28
A6
DISPLAY LOGIC
Assembly 42
U42-d4
7493
÷16
12
Q1
9
Q2
8
Q4
11
Q8
C1n
14
2
R0
3
R0
1
C248n
14
B2
15
U42-c4
74145
1
Y0
2
Y1
3
Y2
4
Y3
5
Y4
6
Y5
7
Y6
9
Y7
10
Y8
11
Y9
B1
13
B4
12
B8
13
12
11
U42-d3
N42.B2
N42.A1,Z22
N42.21
V+12
V+12
N42.Y
V–12
V–12
HP 9830 Computer
Section: Display Logic
Page: D1 Rendition: 2014 Dec 26
8
12
13
1
11
10
9
8
12
13
1
11
10
9
12
13
U42-b2
10
11
U42-b2
8
9
U42-b2
U42-c3
74123
86µS
5
Q
12
nQ
11
R
9
10
6
7
30.1K
0.01
U42-c3
74123
2µS
13
Q
4
nQ
3
R
1
2
14
15
27K
200pF
U42-c2
74123
8mS
13
Q
nQ
3
R
1
2
14
15
27K
1
35V
U42-c2
74123
365mS
5
Q
12
nQ
11
R
9
10
6
7
27K
47
6V
COLUMN SCAN
OSCILLATOR
COLUMN
COUNTER
CHARACTER
GENERATOR
LEFT-16
COLUMN LATCH