Treat the circuit cover with care

If you turn your HX-20 upside down, you will notice something that looks like a trap door. This covers the HX-20’s internal circuitry.

circuit cover

Treat the circuit cover with care

PLEASE NOTE: You should not remove this cover yourself! Removing it exposes the static-sensitive circuit to possible damage.

Your warranty will become void if you attempt to modify, adjust, add, or insert any ROM or other part or device in this compartment.

This cover should only be removed by an authorized Epson dealer or service center and for one of two reasons:

1 ) to install an option ROM.

2.) to select a different character set (see Page 27).

Also, do not operate the HX-20 with the circuit cover removed. Doing so increases the chance of damage to the circuit, and may cause the HX-20 to interfere with television or radio reception nearby.

Use only the HX-20 AC adapter to charge HX-20 batteries

Your HX-20 comes with a device labelled AC ADAPTER. This unit is designed to charge the batteries in your HX-20. It is not designed to run your HX-20 directly from AC current.

In all cases, you should operate the HX-20 using only its internal nickel-cadmium batteries.

You may own other electronic products whose accessories include an AC adapter or a battery charger that looks much like the HX-20 battery charger. DO NOT USE any of these devices with your HX-20. Their electrical characteristics will almost certainly be quite different from those of the HX-20 battery charger. (This is true even of chargers and adapters rated at 6 volts, and equipped with

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