2-1
Diagnostics and Commands for
Troubleshooting
2
This chapter describes basic troubleshooting procedures.
2.1 Diagnosing Problems
2.1.1 LEDs
To determine if a system failure has occurred, look at the front panel LEDs. If
the center (yellow) LED is lit, the system has one or more hardware failures.
System board LED patterns provide some information about board status. It is
best to use a terminal and execute the
prtdiag
command. Alternatively,
initiate Power-On Self-Test (POST) and OpenBoot PROM (OBP) programs.
To identify the system master, observe status LEDs (yellow, marked 0 through
7) on the system board rear (valid only while OBP is booting.) LEDs on the
system board in slot 0 will flash in a repeated cyclical pattern. For other system
boards, LEDs should present a solid pattern.
When boot is complete, LED patterns change: the status LEDs on all boards
present a cyclical pattern, with several exceptions. Boards lacking SuperSPARC
modules present a solid LED pattern. On failed boards, LEDs are off.
Summary of Contents for SunSwift SPARCserver 1000
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Page 26: ...xxvi SPARCserver 1000 System Service Manual June 1996 ...
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 162: ...12 8 SPARCserver 1000 System Service Manual June 1996 12 ...
Page 163: ...Part7 Appendixes Glossary Index ...
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Page 216: ... 6 SPARCserver 1000 System Service Manual June 1996 ...