Silicon Graphics Octane III, User Manual, Page: 26 / 64

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2: System Operation and Troubleshooting
Server Precautions
If you have not already done so, review the electrical and general safety precautions in Chapter 1.
Each system power supply should be connected to a high-quality power source that offers
protection from electrical noise and power surges.
For extra protection, use a regulating uninterruptible power supply (UPS) to protect the system’s
power supplies from power surges, voltage spikes and to keep your system operating in case of a
power failure. This is an optional device not provided by SGI with your system.
Make sure all power and data cables are properly connected and not blocking the enclosure
airflow. Anyone servicing the system should insure the disk drives and power supply modules are
cool before touching them. Always keep the Octane III system covers closed when it is not being
serviced to maintain proper cooling and EMI supression.
Troubleshooting the System
The following table lists recommended actions for problems that can occur. To solve problems
that are not listed in this table or in another section of this chapter, contact your SGI system
support engineer (SSE) or other approved service provider.
Table 2-1 Troubleshooting Chart
Problem Description Recommended Action
The system will not power on. Ensure that the power cords of the enclosure are seated
properly in the power receptacles.
Ensure the enclosure’s enable power switch is set to On (|).
If the power cords are plugged in and the enable power
switch is on, contact your support organization or SSE.
An individual compute tray will not power on. Use the
SGI Octane III Cluster Server Component
Replacement Guide
and insure the tray is plugged in.
The system console does not display after
system boot. Check the monitor connection to power and to the video
connector on the back of the system. If your monitor is
plugged to a DVI-I connector, confirm that your system has
a graphics option that supports it - if not - use the VGA.
The system will not boot the operating system. Contact your support provider.
The PWR LED of a populated PCI slot in a
tray is not illuminated. Using the
SGI Octane III Cluster Server Component
Replacement Guide
- reseat the PCI card.