Overview
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When you turn on the power switch, your system should go through these steps:
•
The LED on the front of the machine turns amber and the system initiates Power-On
Diagnostics.
•
The system runs Power-On Diagnostics for about twenty seconds.
•
When the system passes all Power-On tests, the LED turns green.
•
The system boots IRIX.
If your system does not operate as described above, you may have a problem. Below is a
list of possible symptoms, error messages and cures to fix your system or locate the faulty
part.
No Visible Light from the LED with No Error Message
If during power-on, the system LED doesn’t light up and no error message appears on
the screen, check all cables. Make sure the cables are securely connected and the power
cable is plugged into an outlet that works. Adjust the brightness control knob on the
monitor to test for adequate light on the screen. If all the cables are connected and the
symptoms remain, you may have a faulty power supply. To verify, look at the fan from
the back of the system. The fan is just above the power outlets on the back of the Indigo
chassis. Check for airflow and listen to hear if the fan is running. If the fan is not running,
the power supply is faulty. Follow the instructions in “Ordering Replacement Parts” on
page 135 to order a new power supply. Then go to “Replacing the Power Supply” on
page 151 to remove the power supply, and then contact your service provider for further
instructions.
A Blinking Amber LED with No Error Message
If the LED keeps blinking and no error message appears on the screen, one or more
memory SIMMs may be faulty. Go to “Checking and Removing Memory” on page 156 to
check that all SIMMs are seated all the way into the sockets. Then power the system on
again. If the LED still blinks and the screen is blank, replace all four SIMMs. Follow the
instructions in “Ordering Replacement Parts” on page 135 to order new SIMMS, and
“Checking and Removing Memory” on page 156 to remove the faulty SIMMs. Then
contact your service provider for further instructions.