HP 8753E Service Manual page 238

6. After you have entered all of the instrument's hardware options, press the
following keys:
7. View the analyzer display for the listed options
8. When you have entered all of the hardware options, return the A9 switch to
the Normal position.
9. Perform the "EEPROM Backup Disk Procedure" located on page 3-42.
If any of the installed options are missing from the list, return to step 2 and
reenter the missing option(s).
Adjustments and Correction Constants