Casio SF-4900ER User Manual page 16

Casio calculator user's guide sf-4900er sf-4980er sf-4985er
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PART 1 Getting Started
If this is the first time you ever turned on the SF Unit...
Perform the RESET procedure under "Before using the unit for the first time" on
page 1, starting from step 9.
If this is not the first time you are using the SF Unit...
There is probably a problem with the data in memory (data error). Note that once
data is lost it cannot be recovered. Such data errors are generally caused by one
of the following problems.
Interruption of battery power.
Severe electrostatic charge, impact, change in temperature, or change in
humidity.
Hardware problem.
After a data error is discovered, you will not be able to input or edit data. In order
to return memory to normal (allowing further input and editing of data), you must
perform the RESET operation to clear the memory of all data. Before doing so,
you may want to recall important data and write it down (if you don't already have
a copy). You can then re-input the data after clearing the memory.
The RESET procedure you should use depends on the type of message error
message on the display.
"ARE YOU USING A NEW UNIT FOR THE FIRST TIME?"
1. Make sure that NO is highlighted and then press
press J to move the highlighting to NO and then press
The message "DATA ERROR! CHECK YOUR USER'S GUIDE FOR PRO-
CEDURE!" appears on the display at this time. After this message appears,
you can press
make a back-up record of it before continuing.
2. Press the RESET button, which is located inside the battery compartment
cover on the back of the unit.
This causes the "CLEAR MEMORY AND SET UP THE UNIT FOR OPERA-
TION?" message to appear on the display.
3. Press H to move the highlighting to YES and then press
Highlighting NO and pressing
Home Time screen.
"CLEAR MEMORY AND SET UP THE UNIT FOR OPERATION?"
1. Make sure that YES is highlighted. If OFF is highlighted, press H to move the
highlighting to YES.
Highlighting OFF and pressing
14
to clear it from the display and recall data in order to
CLEAR
SET
SET
SET
clears the reset message and displays the
turns off the unit without resetting the unit.
. If YES is highlighted,
.
SET
to reset the unit.
SET

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