Part 1 - Getting Started; Read This First; Make Back Up Copies Of Important Data; About The "Data Error - Casio SF-4990 User Manual

Read this first!

You must be familiar with the following information in order to use the SF Unit
correctly. It tells you what to do in order to avoid losing important data stored
in memory. Please be sure to read the following before using the SF Unit!

Make back up copies of important data!

Your SF Unit employs electronic memory, which makes it possible to store
large volumes of data and to recall stored data quickly and easily. Data is
retained as long as power is supplied by the batteries. This means that should
batteries go dead, or if you make a mistake while replacing batteries, the data
stored in memory may be damaged or lost entirely. Data contents can also be
damaged or lost due to strong electrostatic charge, strong impact, or extremes
in temperature and humidity.
All of this means that you should make back up copies of important data in a
notebook in case any of the above conditions occur.
About the "DATA ERROR!....." message...
Whenever you turn on the power of the SF Unit, it performs a self-check before
beginning operation. If a problem is discovered during the self-check, the SF Unit
displays the "DATA ERROR!....." message.
Note
•
The above message always appears in English, regardless of the system
language setting.
PART 1
Getting Started
13
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