Troubleshooting Overview
2-3
2
2.2 Status Lights and Indicators
Figure 2-1 shows the location of indicators on the system front panel.
OpenBoot
The boot program runs additional
tests such as the disk drive tests.
The program boots the system by
loading the operating system from the
root disk drive. The root disk is
usually drive number 0 in the internal
SCSI disk drive tray.
To read OBP messages, connect
the console (serial ASCII
terminal) to the system master.
If the console connects to the
wrong system board, messages
will NOT appear on the screen.
If set to verbose mode,
OpenBoot displays a list of
system hardware options.
System board LEDs:
• system master (slot 0); the
eight lower (yellow) LEDs
cycle constantly
• all others; the yellow LEDs
remain on (do not cycle)
• any system board; if the
yellow LEDs are off, the
board has failed POST
Operating
system
(UNIX)
The operating system loads into
memory and begins running.
If a hardware failure occurs while the
system is running, POST can
automatically configure around the
failure, and reboot.
All system boards; the left two
green LEDs denote that 0, 1, or
2 SPARC modules are installed
and functional.
System board LEDs:
• all boards; the eight lower
(yellow) LEDs cycle
constantly, except those
having no SPARC modules
Table 2-1
Hardware and Software Control of the System (Continued)
Control Area
Actions
Observations
Indicators
Summary of Contents for SunSwift SPARCserver 1000
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Page 27: ...Part1 SystemInformation ...
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Page 39: ...Part2 Troubleshooting ...
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Page 46: ...2 6 SPARCserver 1000 System Service Manual June 1996 2 ...
Page 77: ...Part3 PreparingforService ...
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Page 89: ...Part4 SubassemblyRemovaland Replacement ...
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Page 108: ...8 10 SPARCserver 1000 System Service Manual June 1996 8 ...
Page 125: ...Part5 SystemBoard ...
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Page 153: ...Part6 IllustratedPartsBreakdown ...
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Page 163: ...Part7 Appendixes Glossary Index ...
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