Any
errors discovered during the autodiagnostics are signaled
to
the
user,
for this reason the screen brightness should be set to maximum
(as
described
in
the previous section); if the screen brightness
is
set
to
minimum, any error messages may not be visible, nor will the initial
start-up screen be visible at the end of a successful autodiagnostc
phase.
Nothing Appears On The Screen
If,
after a couple of minutes, the screen remains blank, and you are
sure
that screen brightness has been properly set, there may be a pro-
blem
with the display. Switch the system off, by pushing the power
switch
to
the OFF position, wait for about a minute and push the power
switch
to
the
ON
position again.
If,
after a minute or
so,
the screen
remains blank, switch the system off and contact your dealer
AUTODIAGNOSTIC MESSAGES
During the autodiagnostic phase, the system displays a message con-
cerning the component currently being tested.
At
the successful com-
pletion
of
each test, the word Pass will appear next
to
the component's
name,
for example:
CPU
(i8086) Pass
If
an
autodiagnostic fails then the word Fail appears next to the com-
ponent's name, for example
DMA Timer
Fail
HOW
TO
RESPOND
TO
AUTODIAGNOSTIC ERROR MESSAGES
Although a
Fail
message may appear, it does not necessarily mean
that the system cannot
be
used. Some errors are transient.
If
a Fail
message appears, you should execute a Hardware Reset .
Note:
A Hardware Reset should not
be
confused with the system reset,
described earlier. Among other differences, a system reset can only
be
executed once the system is working properly. That point has not
yet
been reached.
INSTALLATION
AND
OPERATIONS
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