Fluke 78 - Maintenance

3-1
Chapter 3
Maintenance
Title Page
3-1. Introduction............................................................................................ 3-3
3-2. Recommended Equipment ..................................................................... 3-3
3-3. Operator Maintenance............................................................................ 3-3
3-4. Case Disassembly .............................................................................. 3-3
3-5. Battery Replacement.......................................................................... 3-3
3-6. Fuse Test ............................................................................................ 3-5
3-7. Fuse Replacement.............................................................................. 3-5
3-8. Circuit Assembly Removal................................................................ 3-5
3-9. Display Access................................................................................... 3-5
3-10. Cleaning.................................................................................................. 3-7
3-11. Performance Tests.................................................................................. 3-7
3-12. Setup................................................................................................... 3-7
3-13. Display Test ....................................................................................... 3-8
3-14. DC Voltage Test................................................................................. 3-8
3-15. AC Voltage Test................................................................................. 3-9
3-16. Frequency Test................................................................................... 3-9
3-17. Frequency, Dwell, and Duty Cycle Trigger Level Test..................... 3-10
3-18. RPM Test ........................................................................................... 3-10
3-19. Ohms Test .......................................................................................... 3-11
3-20. Continuity Test................................................................................... 3-11
3-21. Diode Test.......................................................................................... 3-12
3-22. DC and AC Current Test.................................................................... 3-12
3-23. Temperature Test ............................................................................... 3-12
3-24. RPM80 Inductive Pickup Test (Optional Accessory)........................ 3-14
3-25. Calibration.............................................................................................. 3-17
3-26. Troubleshooting ..................................................................................... 3-18
3-27. Surface Mount Assemblies................................................................ 3-18
3-28. Power Supply Related Troubleshooting ............................................ 3-18
3-29. Common (Shunt) Regulator Troubleshooting ................................... 3-19
3-30. Vdd (Series) Regulator Troubleshooting........................................... 3-20