Fluke 2625A User Manual

5A-1

5A-1.

Introduction .......................................................................................... 5A-3

5A-2.

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

5A-3.

Error Codes........................................................................................... 5A-4

5A-4.

General Troubleshooting Procedures ................................................... 5A-6

5A-5.

Power Supply Troubleshooting ............................................................ 5A-8

5A-6.

Raw DC Supply................................................................................ 5A-8

5A-7.

Power Fail Detection........................................................................ 5A-8

5A-8.

5-Volt Switching Supply.................................................................. 5A-8

5A-9.

Inverter ............................................................................................. 5A-9

5A-10. Analog Troubleshooting....................................................................... 5A-11
5A-11.

DC Volts Troubleshooting............................................................... 5A-16

5A-12.

AC Volts Troubleshooting............................................................... 5A-17

5A-13.

Ohms Troubleshooting..................................................................... 5A-17

5A-14. Digital Kernel Troubleshooting ........................................................... 5A-18
5A-15. Digital and Alarm Output Troubleshooting ......................................... 5A-21
5A-16. Digital Input Troubleshooting .............................................................. 5A-21
5A-17. Totalizer Troubleshooting .................................................................... 5A-23
5A-18. Display Assembly Troubleshooting. .................................................... 5A-23
5A-19. Variations in the Display...................................................................... 5A-26
5A-20. Calibration Failures .............................................................................. 5A-27
5A-21.

Introduction...................................................................................... 5A-27

5A-22.

Calibration-Related Components..................................................... 5A-27

5A-23.

Retrieving Calibration Constants..................................................... 5A-29

5A-24.

Replacing the Flash Memory (A1U14 and A1U16) ........................ 5A-29

5A-25. Memory Card I/F PCA (A6) Troubleshooting. .................................... 5A-30
5A-26.

Power-Up Problems ......................................................................... 5A-30

5A-27.

Failure to Detect Memory Card I/F PCA .................................... 5A-30