HP 54501A Service Manual page 89

6-17 . SELFTESTS
The selftests are used for isolating problems in the HP 54501 A. A keydown power-up must be
performed before invoking the HP 54501A selftests . This ensures critical parameters to the
selftests are set to known values to avoid any erroneous results .
The selftests may be invoked from any menu by pressing the front-panel UTIL key and then select-
ing selftest menu softkey . Figure 6-12 is the available choices in the HP 54501A Selftest Menu .
The tests may be run individually or, by selecting test all softkey, consecutively . After each selftest
has been completed, a message of pass or fail for that selftest will be displayed . If failed messages
are displayed for components or circuitry on the System Board Assembly, it may help to perform
the adjustment procedures in section 4 of this manual . If the selftests continue to fail, the System
Board Assembly must be returned to the factory for service . Component level troubleshooting is
not supported in this manual .
The loop test in the SELF TEST MENU is used for factory service only .
Figure 6-12. HP 54501A Selftest Menu Selections
HP 54501A SERVICE