Casio fx-9860G Slim Manual De Usuario

20070201

 

Your calculator is equipped with a backlight for easy reading, even in the dark. You can 
conserve battery power by limiting backlight operation to only when you need it.

u  To turn on the backlight

• Press 

](LIGHT) to turn on the backlight.

The backlight turns off automatically if you do not perform any key operation for a preset 
amount of time (30 seconds or 10 seconds).

• If you perform a key operation, the backlight duration will be extended for the applicable 

preset amount of time (30 seconds or 10 seconds).

• See “To specify the backlight duration” (page 11-2-2) in the fx-9860G Series Software 

User’s Guide for information about how to specify 30 seconds or 10 seconds as the 
backlight duration time.

• Frequent use of the backlight will shorten battery life.

• The following are guidelines that show how battery life is affected by backlight use. It is 

based on a new set of alkaline batteries at a temperature of 25°C.

5 minutes calculation, 55 minutes display per hour; 
no backlight use

140 hours

5 minutes calculation, 55 minutes display, 3 minutes 
backlight operation per hour

130 hours

5 minutes calculation, 55 minutes display, 15 minutes 
backlight operation per hour

100 hours

5 minutes calculation, 55 minutes display per hour; 
continuous backlight use

  50 hours