The internal battery
While it is switched off, the computer 'remembers' the time and other useful
information such as its 'configuration' (features like how fast the pointer moves when
you move the mouse). For more information on configuring your computer, see the
RISC OS 3 User and Applications Guide.
To support this memory, the computer uses an internal battery which is charged while
the computer is switched on. Ideally, to maintain the battery at full charge, the machine
should be switched on for at least one hour in each five-day period. However, the
battery does not need to be fully charged in order to work, and will in fact maintain the
computer's clock and configuration for as long as six months while the computer is not
being used. If your computer is switched off for this long, leave it on for a few hours
the next time you use it.
In the course of time (after a few years) the battery, like a car battery, may run down.
You can tell when this has happened by the fact that the computer will frequently '
forget' its configuration and the computer's clock will show the wrong time. You
should then take the computer to your Acorn supplier, who will install a new battery.
Cleaning the computer, monitor and keyboard
First, remember to follow the Guidelines for
safe operation
at the very beginning of
this guide. In particular, switch off and unplug the computer and any peripherals.
You can clean the computer case by wiping it gently with a soft, slightly damp cloth.
Clean the keyboard with a clean, dry paintbrush. For advice on cleaning the monitor,
refer to the manual accompanying it.
Cleaning the mouse
You should use the mouse on a surface that is as clean and as dust-free as
possible. However, dust does sometimes get caught up in the ball on the
underside of the mouse.
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