VECTOR
GRAPHIC, INC.
PRINTEST.COM
This program allows
the
technician
to
check five different functions of the
printer attached
to
the Vector 4, for troubleshooting purposes.
KYBDTEST.COM
This
program allows the technician
to
check for problems in the keyboard.
It
can
be
set
to
check the values of any individual key, or
to
read
the
value
of
all
keys successively
from
the keyboard.
SCRNTEST.COM
This program is
used
by service technicians
to
adjust
~e
focus and intensity
of the Vector 4 monitor.
PORTEST.COM
.
This
program is used
to
determine the
correct
operation of
the
various output
ports of the Vector
4.
CPUTEST.COM
This
prc::gram
verifies the CPU by writing a known value into a known location
in memory and displaying
it
on
the screen.
CRe.COM
This program uses a mathematical formula
to
determine a constant for
fUes
on
disk or
diskette.
If
a program is
giving
errors,
the
CRC
(for
Cyclic
Redundancy Check) will return a value which can be checked against the
CRe
done for the same file on a
known
good
diskette.
If
the
two
CRC's
do
not
match,
it
can
be
safely
assumed
that
the
inoperative
program has
been
damaged in some way, and hardware failure should not be suspected of causing
the specific errors
•
.
For
more
detailed
information
on
these
diagnostic
test
programs, see the
Vector
4 Programmer's Manual Set.
X E-4
7100-0001
9-01-82 - Rev. A
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