HP 39gII

Reference information 311
Resetting the HP 39gII
If the calculator “locks up” and seems to be stuck, you
must reset it. This is much like resetting a PC. It cancels
certain operations, restores certain conditions, and clears
temporary memory locations. However, it does not clear
stored data (variables, app databases, programs) unless
you use the procedure below, “To erase all memory and
reset defaults”.
To reset Press and holdOand3simultaneously, then
release them.
To erase all memory and reset defaults
If the calculator does not respond to the above resetting
procedures, you might need to restart it by erasing all of
memory. You will lose everything you have stored. All
factory-default settings are restored.
1. P re s s a n d h o l d O,1,and6
simultaneously.
2. Release all keys in the reverse order.
If the calculator does not turn on
If the HP 39gII does not turn on, follow the steps below
until the calculator turns on. You may find that the
calculator turns on before you have completed the
procedure. If the calculator still does not turn on, please
contact Customer Support for further information.
1. P re s s a n d h o l d
Ofor 10 seconds, then release.
2. Press and hold Oand 3simultaneously, then
release
3, then releaseO.
3. Press and hold
O,1,and6
simultaneously. Release
6, then release 1,
and then release
O.