Troubleshooting Procedures; Power-On Failure - Sun Microsystems Sun Blade 150 Service Manual

4
C H A P T E R

Troubleshooting Procedures

This chapter describes how to troubleshoot possible hardware problems and
suggests corrective actions.
This chapter contains the following topics:
Section 4.1, "Power-On Failure" on page 4-1
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Section 4.2, "Video Output Failure" on page 4-2
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Section 4.3, "Hard Drive, CD-ROM, or DVD-ROM Drive Failure" on page 4-2
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Section 4.4, "Power Supply Test" on page 4-4
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Section 4.5, "DIMM Failure" on page 4-5
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Section 4.6, "OpenBoot PROM On-Board Diagnostics" on page 4-5
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Section 4.7, "OpenBoot Diagnostics" on page 4-8
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4.1

Power-On Failure

This section provides examples of power-on failure symptoms and suggested
actions.
Symptom
The system does not power up when you press the power switch.
Actions
1. Ensure that the AC power cord is properly connected to the system and to the wall
receptacle. Verify that the wall receptacle is supplying AC power to the system.
2. If the wall receptacle AC power has been verified, but the system does not power
on, the system power supply may be defective. See Section 4.4, "Power Supply
Test" on page 4-4.
4-1