Troubleshooting Hardware Problems - Sun Microsystems Sun Fire V440 Diagnostics And Troubleshooting Manual

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C H A P T E R

Troubleshooting Hardware Problems

The term troubleshooting refers to the act of applying diagnostic tools—often
heuristically and accompanied by common sense—to determine the causes of system
problems.
Each system problem must be treated on its own merits. It is not possible to provide
a cookbook of actions that resolve each problem. However, this chapter provides
some approaches and procedures, which used in combination with experience and
common sense, can resolve many problems that might arise.
Tasks covered in this chapter include:
"How to Troubleshoot a System With the Operating System Responding" on
page 126
"How to Troubleshoot a System After an Unexpected Reboot" on page 131
"How to Troubleshoot Fatal Reset Errors and RED State Exceptions" on page 142
"How to Troubleshoot a System That Does Not Boot" on page 154
"How to Troubleshoot a System That Is Hanging" on page 160
Other information in this chapter includes:
"About the Information to Gather During Troubleshooting" on page 120
"About System Error States" on page 123
"About Unexpected Reboots" on page 126
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