Table of Contents
Advertisement
YES
NO
Problem
STEP
7
Action
If the display
and
the CPU/Keyboard
units
seem
to
be
performing
correctly
at
this
point,
then
proceed
to
STEP
7.
If the
tone
check
was
correct
and
there
is still
nothing
displayed
on
the
display,
then
the
problem
is in the display.
See the Service
Policy
section
for
information
on
how
to
arrange for a repair.
Press
the Reset
button
on
the rear
of the
CPU/Keyboard.
Re-enter
the
sequence
above.
Be very careful.
If the display
is
not
working,
it can
be
very
confusing
to
enter
the
sequence
without
being
able
to
see
what
you are
entering.
If the
tone
is still
not
heard,
then
the
problem
is in the CPU/Keyboard.
See the
Service
Policy
section
for
information
on
how
to arrange
for a repair.
As defined
in YES
and NO.
Adjust
the
Brightness
on
the
display
to
a
comfortable
level.
Also
adjust
the
Con-
trast
on
the
green
display
to
the
desired
level.
The
failure
of
either
of
these
adjustments
to perform
properly
means
that
the display
needs
repair.
See
the Service
Policy section
to arrange
for a repair.
Advertisement
Chapters
Table of Contents
