Diagnostics; Power-On Diagnostics - Silicon Graphics Tezro Hardware User's Manual

Diagnostics

Power-on Diagnostics

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The Silicon Graphics Tezro visual workstation is equipped with diagnostics to test the
system hardware and diagnose part failures. These diagnostics are grouped into three
categories:
•
Power-on diagnostics (POD)
Power-on diagnostics are PROM-resident tests that run automatically when you
power on the system. As the boot process discovers hardware components, it runs
power-on diagnostics to verify that each component that is needed to boot the
system is working correctly. Refer to "Power-on Diagnostics" on page 115 for more
information about POD.
• Offline diagnostics
Offline diagnostics use a standalone diagnostic environment to test the system
hardware; the operating system cannot be running while you use offline
diagnostics. Refer to "Offline Diagnostics" on page 117 for more information.
• Online diagnostics
Online diagnostics are tests that verify system hardware while the operating system
is running. To prevent data loss, you should use the online diagnostics only when
the system is idle. Refer to "Online Diagnostics" on page 120 for more information.
All diagnostics are loaded on your workstation when you receive it. To upgrade to future
revisions of the diagnostics, download the appropriate Customer Diagnostics package
from Supportfolio (http://support.sgi.com). Contact your service representative for
more information.
Note: The diagnostics described in this document run only on Silicon Graphics Tezro
visual workstations. They will not work on any other SGI systems.
The power-on diagnostics run automatically when you power on or reset the system. As
the boot process discovers hardware, it verifies that each component is functional
enough to load the operating system.
The power-on diagnostics test the hardware in the following order:
Diagnostics
115