Sun Microsystems Ultra 1 140 Service Manual page 9

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Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
Part 1 —System Information
1. Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 System Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 System Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part 2 —Troubleshooting
2. SunVTS Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Power-On Self-Test (POST). . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 How to Start POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Max and Min Levels of POST . . . . . . . . . . . . . . . . . . . . . . .
3.3 POST Progress and Error Reporting . . . . . . . . . . . . . . . . .
3.4 Additional Keyboard Control Commands . . . . . . . . . . . .
3.5 System and Keyboard LEDs . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Serial Port A POST Output . . . . . . . . . . . . . . . . . . . . . . . . .
4. Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1-1
1-2
2-1
3-1
3-1
3-2
3-3
3-4
3-4
3-6
4-1
vii

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