HP 2040D - Manual (Page 14)

Series 2040 Test System
Series 2040 Maintenance Manual V2.00 Selftest & Calibration
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check the Selftest assembly’s cable for damage.
UUT POWER SUPPLIES OFF - Make sure the UUT Power Supplies
are on.
TESTHEAD POWER SUPPLY FAULT - Check the Testhead Power
Supply Controller’s indicator LEDs. If any of the LEDs are not lit,
reset the system and recheck.
MISALIGNED PINS ON PATCHBOARD RECEIVER - Remove the
Selftest Assembly and carefully inspect the alignment of the
Patchboard receiver pins. Adjust any pins that are misaligned,
remount the Selftest Assembly, and re-test.
After the common problems have been eliminated, a failure in
Functional Selftest can indicate a hardware problem. Since a failure
in Functional Selftest could also be caused by calibration,
recalibrate the unit and run Functional Selftest again. If calibration
or Functional Selftest fails now, a hardware problem most likely
exists. Refer to the Selftest Failure Analysis on the next two pages.