Silicon Graphics Prism Hardware User's Manual page 36

1: Quick Start Installation and Operation Procedures
14
The front panel of the enclosure (see Figure 1-3 on page 6) has the following controls and
indicators:
• L1 controller display. A liquid crystal display (LCD) that shows status and error
messages generated by the L1 controller.
Note: See Chapter 4, "Troubleshooting and Diagnostics" or refer to the SGI L1 and
L2 Controller Software User's Guide (007-3938-00x) for more information on the L1
controller.
• Status LEDs. The front panel has the following LEDs:
– Power button LED. This LED illuminates green when the internal components
are on.
– Service-required LED. This LED illuminates yellow to indicate that an item is
not functioning properly (for example, a fan is off), but the system is still
operating. Check the L1 panel for any error indications, and see the section "L1
Controller Error Messages" on page 107 for more information.
– Failure LED. This LED illuminates red to indicate that a failure has occurred
and the system or module has shut down.
• Power button. Press this button to power on the deskside system. Alternatively,
you can power on the system from an optional system console.
• Reset button. Use a pen or other pointed object to press this button to reset the
internal processors and ASICs. The reset will cause a memory loss.
• NMI button. Pressing this button (using an inserted paper clip) issues a
non-maskable interrupt command to the system. When the system hangs, you can
send an NMI interrupt. The interrupt goes to PROM and causes the CPU state to be
captured. This information is saved in flash PROM and in the system log, and can
assist your service technician in debugging system hangs or other similar problems.
007-4772-002