Before Assuming Malfunctionof the Calculator...

Perform the following steps whenever an error occurs during a calculation or when calculation results are not what you expected. If one step does not correct the problem, move on to the next step.

Note that you should make separate copies of important data before performing these steps.

1.Check the calculation expression to make sure that it does not contain any errors.

2.Make sure that you are using the correct mode for the type of calculation you are trying to perform.

3.If the above steps do not correct your problem, press the Okey. This will cause the calculator to perform a routine that checks whether calculation functions are operating correctly. If the calculator discovers any abnormality, it automatically initializes the calculation mode and clears memory contents. For details about initialized settings, see “Configuring the Calculator Setup”.

4.Initialize all modes and settings by performing the following operation:

19(CLR)1(Setup)=(Yes).

ReplacingtheBattery

A low battery is indicated by a dim display, even if contrast is adjusted, or by failure of figures to appear on the display immediately after you turn on the calculator. If this happens, replace the battery with a new one.

Important: Removing the battery will cause all of the calculator’s memory contents to be deleted.

1.Press 1A(OFF) to turn off the calculator.

•To ensure that you do not accidentally turn on power while replacing the battery, slide the hard case onto the front of the calculator.

2. Remove the cover as shown in the illustration and

Screw

replace the battery, taking care that its plus (+) and

 

minus (–) ends are facing correctly.

 

3. Replace the cover.

4. Initialize the calculator:

O19(CLR)3(All)=(Yes)

• Do not skip the above step!

E-56