Casio fx-55 Plus Benutzerhandbuch

E-3

Do not subject the calculator to excessive impact, pressure, or 
bending.
Never try to take the calculator apart. 
Use a soft, dry cloth to clean the exterior of the calculator. 
Whenever discarding the calculator or batteries, be sure to do so in 
accordance with the laws and regulations in your particular area. 

*  Company and product names used in this manual may be registered 

trademarks or trademarks of their respective owners. 

Before using the calculator, slide its hard 
case downwards to remove it, and then affix 
the hard case to the back of the calculator as 
shown in the illustration nearby. 

Press 

O to turn on the calculator.

Press 

1A(OFF) to turn off the calculator.

Auto Power Off
Your calculator will turn off automatically if you do not perform any operation 
for about 10 minutes. If this happens, press the 

O key to turn the calculator 

back on.

Display the CONTRAST screen by performing the following key operation: 
s8(]CONT'). Next, use d and e to adjust contrast. After the 
setting is the way you want, press 

A. 

Important: If adjusting display contrast does not improve display readability, 
it probably means that battery power is low. Replace the battery. 

Pressing the 

1 key followed by a second key performs 

the alternate function of the second key. The alternate 
function is indicated by the text printed above the key. 

OFF

A