NEW: HP 15C Collectors Edition

[Voldemar]

(08-06-2023 10:52 AM)johanw Wrote:  Nice, but I seem to overlook something obvious here: what keys are the L, C and H? What do I press exactly here?

1.L 2.C 3.H is the main test screen.
Press 1 to perform the LCD test;
Press 2 to perform the checksum test and see the firmware revision
and copyright messages;
Press 3 to perform the keyboard test.
Owners Handbook page 261
There is nothing about «press 4», it is secret function