Casio CE-2400 Operator's Instruction Manual page 5

Getting Started
box, making sme that all of the parts
and accessones aie included
Remove the tape holding parts of the cash regis
ter in place Also remove the small plastic bag
taped to the pimtei cover Inside you will find
the mode keys
Install the three memory backup batteries
(page 14)
Important!
These batteries protect the information stored in your cash register's memory when there is a power
failure or when you unplug the cash register. Be sure to install these batteries.