Panasonic KX-TD500 System Reference Manual page 1386

5.00 Diagnosis of Full Keyboard
Description Used to diagnose the full keyboard.
Input Format DIG>KEY
Diagnosis Method 1) When the arrangement of the full keyboard appears on the
Note : Pressing the F8 key or CTRL + C key during the diagnosis, stops
the diagnosis, and displays "Abort".
Displaying all keys in reverse video means the conclusion of
diagnosis of full keyboard.
screen, confirm that the key pressed on the full keyboard is
displayed in reverse video on the screen.
KEY TEST START
*****
EC 1 2 3 4 5 6
TAB Q W E R T Y U
A S D F G H
Z X C V B N
SHIFT
CT SPACE
(1) (2) (3)
7 8 9 0 - = ` BS
I O P [ ] \ LF
,
J K L ;
RET
M , . / DL
SHIFT
FN EM
(4) (5)
14-B-8
BR
(6) (7) (8)
CTRL-C