Casio fx-55 Plus Benutzerhandbuch

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Important Information
The displays and illustrations (such as key markings) shown in this User’s 
Guide are for illustrative purposes only, and may differ somewhat from the 
actual items they represent.
The contents of this manual are subject to change without notice.
In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, 
collateral, incidental, or consequential damages in connection with or 
arising out of the purchase or use of this product and items that come with 
it. Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of 
any kind whatsoever by any other party arising out of the use of this product 
and the items that come with it.
Be sure to keep all user documentation handy for future reference.
Sample Operations
Sample operations in this manual are indicated by a 
 icon. Unless 
specifically stated, all sample operations assume that the calculator is in its 
initial default setup. Use the procedure under “Initializing the Calculator” to 
return the calculator to its initial default setup. 
For information about the 
K and L marks that are shown in the 
sample operations, see “Configuring the Calculator Setup”. 
Initializing the Calculator
Perform the following procedure when you want to initialize the calculator 
and return the setup to their initial default settings. Note that this operation 
also clears all data currently in calculator memory.
r3(All)=(Yes)
Safety Precautions
  
Battery
Keep batteries out of the reach of small children. 
Use only the type of battery specified for this calculator in this manual. 

Handling Precautions
Even if the calculator is operating normally, replace the battery at least 
once every three years (LR44 (GPA76)). 
A dead battery can leak, causing damage to and malfunction of the 
calculator. Never leave a dead battery in the calculator. Do not try using 
the calculator while the battery is completely dead.
The battery that comes with the calculator discharges slightly during 
shipment and storage. Because of this, it may require replacement 
sooner than the normal expected battery life.
 
Do not use an oxyride battery* or any other type of nickel-based 
primary battery with this product. Incompatibility between such 
batteries and product specifications can result in shorter battery life 
and product malfunction.
Avoid use and storage of the calculator in areas subjected to 
temperature extremes, and large amounts of humidity and dust.