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Sun Ultra 1 Series Service Manual—November 1995
4.1 Power On Fails or No Video . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Power Supply Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 DSIMM Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Hard Disk or CD-ROM Drive . . . . . . . . . . . . . . . . . . . . . . .
4.5 OpenBoot On-Board Diagnostics . . . . . . . . . . . . . . . . . . . .
4.6 Selected On-Board Diagnostic Tests . . . . . . . . . . . . . . . . . . 4-12
4.7 The probe-scsi and probe-scsi-all test . . . . . . . . . . . . . . . . 4-13
4.8 System Board Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
5. Safety and Tool Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Safety Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Power On and Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Powering Off the System . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Powering On the System . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part 4 —Subassembly Removal and Replacement
7. Internal Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Removing the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Attaching the Wrist Strap . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 Replacing the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8. Major Subassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary of Contents for Ultra 1 140
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Page 12: ...x Sun Ultra 1 Series Service Manual November 1995 Glossary Glossary 1 Index Index 1...
Page 23: ...Part1 SystemInformation Product Description page 1 1...
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Page 63: ...Part3 PreparingforService Safety and Tool Requirements page 5 1 Power On and Off page 6 1...
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Page 121: ...Part5 SystemBoard System Board and Component Replacement page 10 1...
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Page 147: ...Part6 IllustratedPartsBreakdown Replacement Parts page 11 1...
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Page 174: ...Index 4 Sun Ultra 1 Series Service Manual November 1995...