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The Question is:
I have a Dec 1000A 5/400 system that was powering up but is no longer powering
up.
As soon as you hit the on/off switch it runs up
then quits. Are there any issues such as the case being properly closed inorder
for the system to power up?
ej
The Answer is :
The AlphaServer 1000A model 5/400 system will be assumed here,
as there is no "DEC 1000A" series known to the OpenVMS Wizard.
Various Alpha systems do have sensors associated with portions of
the system enclosure; portions of the enclosure that are critical
to system cooling. Some Alpha systems have airflow sensors and/or
fan sensors. Various Alpha systems have safety interlocks. Most
Alpha systems have thermal sensors. When triggered, these sensors
can (will) prevent the system enclosure from powering up, or will
cause an immediate system power down.
Sometimes a power supply failure, other low-level hardware failure,
sensor failure, or a system misconfiguration can cause an Alpha system
to power up, then immediately power down. Or to not power up at all.
Operating a system with the covers off can also potentially cause
interference to other devices and to radio-frequency receivers in the
area. In addition to maintaining sufficient cooling, the system
enclosures of most systems are also designed to prevent interference
to other nearby devices. This interference is known as radio-frequency
interference, or RFI.
The AlphaServer 1000A series does have a safety interlock on the
top cover, which is a likely culprit here.
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