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520
Power-On Diagnostics
The power-on diagnostics perform tests on all major
parts of the display station. These tests are performed
internal to the display station and, therefore, do not rely
on a controller or host system.
The diagnostics take approximately 4 seconds to run. If
there are no errors after all of the tests are run, the
diagnostics place the display station in the normal mode
of operation with a normal status line (see the start of
the MAP section). If an error 1s found, the tests are
stopped and an error status line will be displayed that
contains coded information indicating the maior part that
failed. The image of the display screen identifies the
type of information contained on the error status line.
Status line information can also be obtained by holding
down any key on the keyboard and then powering on
the display station. As long as the key 1s held down, the
status line will be displayed. When the key is released,
the diagnostics place the display station in the ready
mode for normal operation.
Loop-on diagnostics can be attained by using the CE
test switch (525).
Station
Address
3-30
Diagnostics
Notes:
1.
When the Status Line is displayed as shown above at
power-on, it denotes an error condition. A normal
display screen at power-on is shown at the start of
the MAP section.
2. A description of the Status Line shown above is
provided on the following pages.
3.
Line check count will appear only if the error occurred
when the System Available indicator is on.
Engineering
Code
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