Sun Microsystems Netra 1290, Руководство администратора

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63
C H A P T E R
5
Diagnostics
This chapter describes diagnostics and includes the following topics:
■
“Power-On Self-Test” on page 63
■
“SunVTS Software” on page 71
■
“Diagnosing Environmental Conditions” on page 72
■
“Assisting Sun Service Personnel in Determining Causes of Failure” on page 75
■
“Automatic Diagnosis and Recovery Overview” on page 75
■
“Automatic Recovery of a Hung System” on page 77
■
“Diagnosis Events” on page 78
■
“Diagnostic and Recovery Controls” on page 79
■
“Obtaining Auto-Diagnosis and Recovery Information” on page 80
■
“Additional Troubleshooting Commands” on page 85
Power-On Self-Test
Each of the system boards, CPU/memory boards and IB_SSC assembly, contains a
flash PROM that provides storage for power-on self-test (POST) diagnostics. POST
tests the following:
■
CPU chips
■
External cache (headache)
■
Memory
■
Bus interconnect
■
I/O ASICs
■
I/O buses
POST provides several diagnostic levels that can be selected using the OpenBoot
PROM variable
diag-level
. In addition, the
bootmode
command enables the
POST settings to be declared for the next system reboot.