A
346166
{CPS)
!m-
G
e
B
340977
G
340981
G
340983
G
c
340 986
!
L.F.)
G
340989
(DEL )
D
F
G
MANUAL 385, PAGE 15
2
3
4
5
6_
7
8
9
10
I I
43KIOI/CAA AND c:.a
Ottf:Aa"rOR r.o�SOLE LOGIC
INFORMATION NOTES;
�������-��������������==============�
201. ALL RESISTANCE VALUES IN OHMS UNLESS
204. INTEGRATED CIRCUITS-EXTERNAL VIEW AND LEAD
205.
CONNECTOR TERMINATION
206.
SENSE AMP CHART:
207.
INTEGRATED CIRCUIT
PART NUMBERS.
OTHERWISE SPECIFIED.
DESIGNATION:
tON CIRCUIT CARD}:
202. ALL CAPACITANCE tN MICROFARADS UNLESS
VIEWED FROM TOP
sENSE
AMP
1
AMP
SENSE AMP 3
OTHERWISE SPECIFIED.
203. KEYSWITCH AND INDICATORS TERMINAL DESIGNATIONS:
(BOTTOM VIEW)
I
2
CONTACT
OR
BASIC
[i]
0
3
{BOTTOM VIEW)
:-..�
{NORMALL
�
I CLOSED)2 3
INDICATOR
I
13
2
12
o·
3
II
4
10
5
9
6
8
7
MLA4,81,82,B3
lB
17
16
1
5
MLAI, A5, AS, 84
PI 07
OV DC REFERENCE POINT
(INTERLOCK)
.
u. SEC.
JLJ:+3.3V
ov
NOT PRESENT ON ISSUE lA
CLOCK GENERATION AND D RIVERS
560
u
SEC.
Jli+SV
ov
180
Cl2
05V USE
;:!
1---
2.7
U SEC.
U
SEC
2 -B V
1
�
6.93
USEC.
I
U·�EC.
ov
(TYPICAL ONE OF THREE SENSE AMPS
��!!T� .=_x2._E�N�L-C��.!2:R�)-
--
_
------
-
----- ---,
KEYSWITCH
LOGIC AND
SENSE AMPLIF IERS
I
I
I
I
I
REFERENCE
RESISTOR
w
\
(SEE SENSE
I
I
I
I
¢2L
"'
::::
0:
REFERENCE
+12V0
f���c����E
--
j_ �
>
AMP CHART
:
AND NOTE
208!.
�
r-2 .3 m SEC.-j
-8V
AMP CHART
AND NOTE 208). 33 P F
14.57m
+1.2V
KEY DEPRESSED
+12V
)
KEY
DEPRESSED
TYPICAL KEYSWITCH
I
I
SEE SENSE AMP CHART)
I
I
l---j4-57m SEC.r-
1
I
-2V
:'V
1/0
SENSE AMP
(SEE SENSE
AMP CHART!
I
KEY DEPRESSED
I
L
_________________ _ __ _
j
22
PULSES /SCAN
SENSE AMP
I
I
I
_______ ___
j
J
SENSE AMP I
10 II
SENSE AMP 2
II
IZ
SENSE AMP 3
12
I"3
NOT
USED
r---4.53 m SEC.__,
����E
5 U SEC
DATA ENABLE
PULSE
1ST
DEPRESSED
R24
IOK
0:
<(
--'
<(
'
"'
0
"'
MLA5
KEYSWITCH
LOGIC
z
-
;;:
:i'
+
11.s
v
su7.5V -BV
RIB
680
CR5
R31
l.SK
+12 v
"-
�
TEST
R32
1.5K
Rl3
IOK
+12V
0
0:
,._
"'
"'
,._
2
3
5
6
-av
Rl7
1
5
0
AMP
PIN NO.
II
10
9
8 7
6 5
3 2
28
27
26
24
23
20
)9
17
1
e
I 5
14
I 3
I B
25
12
+5V
RB
4,7K
ov
(MLA6}
(ML 84)
KEYTOP CHARACTER
SHIFT {RIGHT)
;
'
SACk SPACE
L 0
0 {ZERO)
+
Rt;TURN
{
'
OELETE
LINE FEED
8
CONTROL
K
5
R F
SPACE
v c
B
G T
6
N H
y
7
M
9
REPEAT
REFERENCE RESISTOR
R27
R30
I
/0 RESISTOR
R26
R21
(MLAI)
SHIFT (LEFT)
s 2
A
LOCAL{LOCAL TALK)
READY
{AUTO
ANSW .l
ESCAPE
{OPT. SPARE)
{
INTRPT.)
3 E
D 4
CAPS LOCK
R6
R22
KEYSWITCH LOGIC (MLAS) INPUT PIN NO.
10
I I
1
2
REFERENCE CAPACITOR
CIO
c
15
C2
MLAl, A6, 84
MLBl, 82
MLB3
MLA4
MLAS
208
RESISTOR IS 2.7 MEGOHMS AND
CAPACITOR IS
22
PF ON ISSUE 1G
OR HIGHER.
A
B
c
INTERFACE LOGIC
P107
I
COVER
u
SEC.
(ILG
1 4
I
..,.....___
14
OPEN
J
ov
30 CPS
OV 10 CPS
17
30
CR2
u
SEC
•
-2V
I
I
8
I
ON
(PRINTER
I 9
I
OV ON
l �
8.93
I
-IOV ON
I
U
SEC.
--1
�.
�EC.
(DATA)
I
-IOV ON
I
I
I
-10.5V�F
I
I
-
IOV ON
TERM. READY
(
A
U
TO
9 l-10. 5v::...J";.F
BIT TIME
143
u
SEC.
SPACE
CR3
6
R7 ov
I
K
P107
)
SERIAL SEND
1
DATA
I
I
( INTRPT.)
I
-IOV ON
I o
I
-10. 5v::.r;F
I
-IOV
5
I
......
IALARM.l
)
1
L
______
__j
POWER DISTRIBUTION
14
F
4
I
I
REPEAT)
R9
4.7K
�
+4.8V
ov
OFF OV
G
11