Owner's Manual

Table Of Contents
Getting Started 69
Replacing the backup battery
Replacing the backup batteryReplacing the backup battery
Replacing the backup battery
1. To replace the backup battery, remove the battery cover and unscrew the tiny screw
holding the BACK UP BATTERY cover in place.
2. Remove the old battery and install a new button cell battery, positive (+) side up.
Replace the cover and the screw.
Important OS download information
Important OS download informationImportant OS download information
Important OS download information
New batteries should be installed before beginning an OS download.
When in OS download mode, the APD feature does not function. If you leave your
calculator in download mode for an extended time before you actually start the