Casio DT-940 Service Manual page 34

Program No.6
Program Name: Matrix
NO. Display/Read indicator
< M a t r i x k e y
S B S C L
F 1 F 5 7
1
F 2 F 6 4
F 3 F 7 1
F 4 F 8 0
E N
< M a t r i x k e y
S B S C L
F 1 F 5 7
F 2 F 6 4
2
F 3 F 7 1
F 4 F 8 0
E N
i.e.)
Display shows pressing BS.
Read indicator: Green
3
4
Press [6] and [ENT] keys in order
>
with Main Menu displays.
8 9
5 6
2 3
.
Press the displayed key.
>
8 9
5 6
2 3
.
Turn all the displayed characters
into reverse.
Operation
― 32 ―
Remarks/Result
The program checks matrix key
input operation.
Caution:
Do not press power supply key,
otherwise power supply goes off.
The corresponding characters turn
into reverse color when pressing
the keys once.
Pressing the keys twice returns to
the normal color.
Complete the job after all the
characters turn to reverse.
If no error occurs, display returns
to the menu screen.