Fluke 77 Bedienungsanleitung PDF herunterladen (Seite 26)

3-1

Chapter 3

Maintenance

Contents Page

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

3-2. PCA Access and General Maintenance .......................... 3-3

3-3. Display Access................................................................ 3-4

3-4. Cleaning.......................................................................... 3-4

3-5. Performance Test ............................................................ 3-7

3-6. Initial Procedure ......................................................... 3-7

3-7. DC Voltage Test......................................................... 3-7

3-8. AC Voltage Test ............................................................. 3-8

3-9. Resistance Test ........................................................... 3-8

3-10. Diode Test .................................................................. 3-9

3-11. DC mA Test................................................................ 3-10

3-12. DC Amps Test ............................................................ 3-11

3-13. Calibration .................................................................. 3-11

3-14. Troubleshooting.............................................................. 3-11

3-15. Supplemental Troubleshooting Procedures................ 3-13

3-16. Checking the Crystal Oscillator ............................. 3-13

3-17. Checking The Reference Voltage .......................... 3-13

3-18. Checking Display Drive Voltage ........................... 3-13

3-19. Checking Beeper Drive Signal............................... 3-13

3-20. Tracing the VDC Signal Path................................. 3-13

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Fluke 77 Bedienungsanleitung Seite 26