Panasonic KX-T336 System Reference Manual page 1411

4.00 Diagnosis of Operation Keyboard
Description Used to diagnose the operation keyboard.
Input Format DIG>OPR
Diagnosis Method 1) When the arrangement of the operation keyboard appears on
CRT(CR)
Note : Pressing the F8 key or the CTRL + C key during the diagnosis
stops diagnosis, and displays "ABORT."
Displaying all keys in reverse video means the conclusion of
diagnosis of operation keyboard.
the CRT screen, confirm that the key pressed on the operation
keyboard is displayed in reverse video on the CRT screen.
OPR. TEST START
***** *****
F1 F2
01
02 03
L1 L2
04 05 06
07
08 09
HLD MSG SPL PAG
10 11 12
(1) (2) (3)
LED(CR) OPR(CR)
F3 F4 F5 F6 F7
L3 L4 L5 L6
ANSWER
(4) (5)
KEY(CR) ALL(CR) HELP(CR)
13-D-6
ATT-FWD PROGRAM
OFF ON OFF ON
F8
ALM NIG
1 2 3
4 5 6
CANCEL
7 8 9
RELEASE
0 #
*
(6) (7) (8)
END
( )
C
R