Appendix A
In Case Of Difficulty
This appendix gives possible failures and troubleshooting information for the mainframe. Included are
start-up and system errors, and their descriptions.
No Communication Between Mainframe and Computer
When the mainframe is unable to communicate with the computer, do the following:
1. Check for poor interface connections (GPIB or Serial I/O) between the computer and mainframe.
If connections are good, continue with step 2.
2. Turn the mainframe off.
3. Remove all plug-in modules from the mainframe.
4. Turn the mainframe on; wait until it goes through its turn on cycle (about 8 seconds).
5. Try to communicate with the mainframe again (send the “VXI:CONFigure:DeviceLIST?”
command or use the “VERF_XXX” program from the B-Size Verification Disk).
6. If the mainframe is now operative, do the following:
a. Turn the mainframe off.
b. Plug in one plug-in module.
c. Turn the mainframe on.
d. Check for correct operation again (see step 4).
e. If the mainframe is now inoperative, the last module installed is defective. If the mainframe
module still operates, repeat steps 6-a to 6-d to check any other modules one at a time until
you find the defective one.
7. If the mainframe is still inoperative, make sure the computer operates correctly. If it appear to
operate correctly, the mainframe is inoperative.
In Case Of Difficulty A-1
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