Sharp EL-9900 - Manual (Page 40)

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Chapter 2: Operating the Graphing Calculator
• The message on the right may
occasionally appear. In this
case, repeat the procedure
from step 1 to prevent loss of
data.
2. Selecting the RESET within the OPTION menu
1. Press @, then p.
The OPTION menu appears.
2. While in the OPTION menu,
press E to select E
RESET; the RESET sub-
menu items should appear on
the right side of the screen.
3. The first item 1 default set will initialize only the SETUP and
FORMAT settings, while the second item 2 All memory will
erase all memory contents and settings. To reset the memory,
select 2 All memory by pressing 2. The verification
window will appear.
4. Press the C key to clear
all data stored on the
calculator.
Press any key to continue.