Casio PX-780 Service Manual page 55

No.12 Key Backlight
No Operation
Switch to "Main Menu 2".
1
Tap "8.KEY BackLight"
or
push "8" key.
2
push "ENT" key.
3
Display
_
====== KeyBL Test ======
[ KeyBL ON]
** Main Menu 2 **
1.ASK/IDA
2.2D_Scanner
3.Printer
4.MCR
5.Serial 8P
6.Serial 14P
7.Battery Life
8.KEY BackLight
9.
0.Quit
– 53 –
Inspection contents
_
Confirm that the key backlight
turns on. Confirm the display on
the left.
Confirm that the key backlight
turns off.