Epson HX-20 User Manual

Chapter 8

Because of its sensitive components, the HX-20 requires some care

even when you’re not using it. This chapter tells you how to store

your HX-20, for a few minutes, a few days, or even a few months.

If you won’t be using your HX-20 for a few minutes, you don’t need

to take any special precautions. You don’t even need to turn it off.

Just put it down, and pick it up again when you’re ready to continue

working with it.

If you know that you won’t be using your HX-20 for at least a few

hours and perhaps for as long as a few weeks, turn if OFF before

you put it away. When you come back to it and turn it on, you’ll find
that the program you were using is still in memory, ready for you to
use again!

Just be sure to store your HX-20 in a place with acceptable

temperature and humidity. (Remember-your car in the summer is
likely to be much too hot for the HX-20. If you must store an HX-20
in your car during hot weather, put it in the trunk, which is likely to
be cooler than the interior of the car itself.)

If you know that you won’t be using your HX-20 for more than a
few weeks, you must take certain precautions to ensure that the

batteries won’t drain down. You see, even when you turn the HX-20

OFF, it continues to draw a small amount of current from the bat-

teries. This current keeps the memory circuits and calendar clock

active.

Although the clock and the memory circuits require only a

miniscule amount of power, they will discharge the batteries com-
pletely if given enough time. When that happens, the HX-20 will

forget  all the programs in its memory, and the batteries, once fully

discharged, may no longer be able to accept a full charge.

Therefore, you should charge the batteries for several hours

before storing the HX-20 for an extended period of time. It would

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