Casio SF-7100SY - Manual (Page 5)

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■ Turning Power On and Off
Press ON/OFF to turn power on and off.
Important!
•
If nothing appears on the display after you load batteries for the first time, press
the RESET button.
•
If nothing appears after you press the RESET button, it means that no power is
being supplied from the main batteries. Replace the main batteries with new ones
(page 15).
■ About the EL backlight
•
This unit is equipped with an EL backlight that allows easy viewing of display
contents in a theater, or anywhere else where lighting is dim.
•
Note, however, that frequent or extended use of the EL backlight shortens
battery life.
The following shows how backlight use affects battery life under controlled test
conditions*.
* Test Conditions
•
“Battery Life” is the number of hours before battery failure when the unit is left on
with 5 minutes of a processing operation and 55 minutes of continuous display
only (no processing operation) per hour, plus the backlight operation described
below.
•
“Backlight Operation” is the number of minutes the backlight is turned on per hour
during the display only (no processing operation) period.
Backlight Operation Battery Life
3 minutes per hour Approximately 120 hours
15 minutes per hour Approximately 80 hours