Table of Contents
Advertisement
PROCESSOR TECHNOLOGY CORPORATION
CUTS, COMPUTER USERS TAPE SYSTEM
SECTION II
(
)
Step 22 Continued.
Ste12
Pin 1 is positioned at the upper left cor-
ner of each IC location, and is indicated
by a dot on the PC board and assembly
drawing.
IC NO.
TYPE
~~
Ul*
4023*
U2*
4027*
(
-
U3*
4013*
(
.
U4*
4013*
(
U8*
4520*
(
u9*
4019*
( .
UIO*
4024*
(
Ull*
4046*
(
U12
74LS163
(
,
U13
74LS175
(
U14
74LS136
(
U15
74LS136
(
)
. U16
74LS367
(i
U17
74LS367
(
.
U18*
6011*
~~)
u19*
4030*
!~
U20
74LSI09
U21
74LS132
U2'2*
4049*
U23
74LS155
(
)
U24
74LS04
. .
~j
U25
74LS08
U26
74LS08
*MOS device.
Refer to CAUTION on Page II-7.
23.
Adjust VRI.
If you do not have a voltmeter, set arrow
on VRI to the "10 o'clock" position (as
viewed from front side of board when VRI
is at the top) and go on to Step 24.
(In
nearly all cases CUTS operates with VRI
at 10
0
I
clock. )
Continued on Page II-17
II-16
Advertisement
Table of Contents
