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.
Содержание SunSwift SPARCserver 1000
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