If it existed at some point, it may be MIA anyway. (Unobtanium?) Even after exhausting Google and DuckDuckGo, I pretty much searched Compaq's old archived website from 2000 all the way to 1996.
I was actually downloading an archive of the original Compaq FTP server (not the current HP server) so I can mirror it to my server (like the Intel FTP archive contents). That server was online until it was finally yanked by HP in mid-2017, a few days after I discovered it by accident. However, I am not sure if even the original Compaq FTP archive has such a manual; I may know by mid-May. I'm not optimistic, however. [Quite frustrating, most information pre-Pentium either disappear from the Internet quite early or never actually made it in the first place.]
Short of removing the CMOS battery (and of course the main battery) and waiting a few minutes, I am not sure of a known shortcut key combo to reset CMOS.
The Hotkeys should be similar to the Armada, though only one hotkey doesn't exist for the Armada:
F3: Shift Lock (?)
F4: Display Switch
F5: PC Speaker Volume Control
F7: Power Management Selection
Computer in my collection that had too much work done is... Compaq Armada 1573DM!
- Original DSTN panel replaced with an HPA panel
- Left hinge repaired twice
- Front panel replaced twice
- Replaced busted inverter
- Chassis replacement