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Installing Batteries
BOOKMAN model 640 uses four AAA
batteries. Here is how to install or re-
place them.
Warning: When the batteries lose
power or are removed from BOOK-
MAN, information that you entered in
its built-in book, and in an installed car-
tridge, will be erased.
1. Turn BOOKMAN over.
2. Slide off its battery cover in
the direction of the triangle.
3. Install the batteries following
the diagram on the case.
Make sure their pluses are
oriented correctly.
4. Replace the battery cover.
Resuming Where You Left Off
You can turn off BOOKMAN at any
screen. When you turn BOOKMAN
on again, the screen that you last
viewed appears.
Installing Cartridges
Warning: Never install or remove a
cartridge when BOOKMAN is on. If
you do, information that you entered
in its built-in book, and in an installed
cartridge, will be erased.
1. Turn BOOKMAN off.
2. Turn BOOKMAN over.
3. Align the tabs on the car-
tridge with the notches in
the slot.
4. Press the cartridge down
until it snaps into place.
Removing Cartridges
Warning: When you remove a
cartridge to install another, informa-
tion that you entered into the
removed cartridge will be erased.
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