Casio PV-100 User Manual page 15

Make sure you are inputting the date correctly.
Cause: You are trying to use invalid
values for a date.
Make sure you are inputting the time correctly.
Cause: You are inputting invalid
values for a time setting.
Cause: You are trying to input data
or receive data while memory is
already full.
Cause: The time you are trying to
set for an alarm is already passed.
Cause: The time you are setting for
an alarm is already used.
Memory is full!
That alarm time is already passed!
That alarm time is already used!
Chapter 13 Technical Reference
Action: Input the date correctly.
Action: Input proper values for the
time.
Action: First try performing the
memory management operation to
see if more memory can be made
available. If this message still
appears, it means that memory is
really full. Delete data you no longer
need to make room for more data.
Action: This is merely a warning
message that appears for about one
second. After that, the dialog box
closes and the data is stored without
the alarm.
Action: Change the alarm time to
one that is not yet used.
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