Troubleshooting Procedures; Power On Fails Or No Video; Symptom; Action - Sun Microsystems Ultra 1 Series Service Manual

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CHAPTER

Troubleshooting Procedures

This chapter describes how to troubleshoot possible problems and includes the
corrective actions you can take.
4 "Power On Fails or No Video" on page 17"Power On Fails or No Video" on page
17
4 "Power Supply Test" on page 19"Power Supply Test" on page 19
4 "DSIMM Failures" on page 20"DSIMM Failures" on page 20
4 "Hard Disk or CD-ROM Drive" on page 21"Hard Disk or CD-ROM Drive" on
page 21
4 "OpenBoot On-Board Diagnostics" on page 23"OpenBoot On-Board Diagnostics"
on page 23
4 "Selected On-Board Diagnostic Tests" on page 25"Selected On-Board Diagnostic
Tests" on page 25
4 "The probe-scsi and probe-scsi-all test" on page 26"The probe-scsi and
probe-scsi-all test" on page 26
4 "System Board Test" on page 27"System Board Test" on page 27

Power On Fails or No Video

The system does not power up when the power switch on the keyboard is pressed.
Check the AC power cord to be sure that it is properly connected to the system and
to the wall outlet. Verify that the wall outlet is supplying AC power to the system.
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