Fluke 45 - Chapter 5 Diagnostic Testing and Troubleshooting

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5-1

Chapter 5

Diagnostic Testing and Troubleshooting

Title Page

5-1. Introduction........................................................................................... 5-3

5-2. Servicing Surface-Mount Assemblies .................................................. 5-3

5-3. Error Codes........................................................................................... 5-4

5-4. General Troubleshooting Procedures ................................................... 5-10

5-5. Power Supply Troubleshooting........................................................ 5-10

5-6. Raw DC Supply............................................................................ 5-10

5-7. 5-Volt Switching Supply.............................................................. 5-11

5-8. Inverter......................................................................................... 5-12

5-9. Analog Troubleshooting................................................................... 5-13

5-10. Uart Test....................................................................................... 5-13

5-11. DC Volts Troubleshooting........................................................... 5-14

5-12. AC Volts Troubleshooting........................................................... 5-14

5-13. Ohms Troubleshooting................................................................. 5-14

5-14. Digital Troubleshooting........................................................................ 5-15

5-15. Display Assembly Troubleshooting...................................................... 5-17

5-16. Calibration Failures .............................................................................. 5-19

5-17. Introduction...................................................................................... 5-19

5-18. Calibration-Related Components ..................................................... 5-20

5-19. Calibration Interrelationships........................................................... 5-21

5-20. Retrieving Calibration Constants ..................................................... 5-21

5-21. Replacing the EEROM A1U5.......................................................... 5-21

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