General Guide - Casio SF-5590SY Service Manual & Parts List

2. GENERAL GUIDE

Display
ON/OFF key
Mode keys
Light key
Display
When lighting is dim, you can turn on an EL (electro-luminescent) backlight for easier viewing.
To turn on the EL backlight
There are two ways to turn on the backlight of the display.
Pressing LIGHT causes the backlight to turn on for about 15 seconds, and then turn off automatically.
Pressing SHIFT and then LIGHT also turns on the backlight, but in this case the backlight stays on as
long as you keep performing key operations on the Digital Diary . The backlight turns off automatically
if you do not perform any key operation for about 15 seconds.
Leaving the backlight on for long periods greatly reduces battery life!
You can manually turn the backlight off by pressing LIGHT again.
Failure of the backlight to turn on indicates low battery power. Replace batteries as soon as possible.
Function key
ESC key
— 5 —
Mode key
Memory keys
10-key pad
Operator keys
Display Change key
Cursor keys
Scroll/Search keys
Alpha keyboard