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Sun Microsystems SPARCstation 5 - Page 6

Sun Microsystems SPARCstation 5
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iv SPARCstation 5 Service ManualNovember 1996
2.5 FORTH-Based PROM Diagnostics . . . . . . . . . . . . . . . . . . . 2-8
2.6 FORTH Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.7 SunDiag System Exerciser. . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.8 SunDiagnostic Executive. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
3. Power-On Self-Test (POST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Power-On Self-Test (POST) . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3 Full Diagnostic Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.4 Abbreviated Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . 3-6
3.4.1 Setting Up a tip Connection to Another System . . 3-6
3.5 Tests the POST Runs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.6 POST Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.7 Status Lights (LEDs) and Indicators. . . . . . . . . . . . . . . . . . 3-9
4. Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 No Video Output on the System Monitor . . . . . . . . . . . . . 4-3
4.2 Power-On Does Not Succeed . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2.1 Power Supply Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.2.2 System Board Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.3 Disk Drive Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.3.1 Verifying the Built-In SCSI Controller . . . . . . . . . . . 4-7
4.4 Determining Faulty DSIMM Locations . . . . . . . . . . . . . . . 4-8
Part 3 –Preparing for Service
5. Safety and Tools Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Safety Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

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