Care And Maintenance; General Advice - Cherry ML 4400 USB Instruction Manual

4

Care and maintenance

The keyboard is maintenance-free. For occasional
external cleaning, a cloth moistened with water is
sufficient. Clean the ball in the trackball at regular
intervals with water and mild soap. Remove the
ball by gently pressing the trackball cover and at
the same time turning counterclockwise. Using
aggressive liquids such as alcohol or acids may
damage the ball and have a negative effect on its
functionality. Be careful when cleaning the optical
sensor (the transparent lens positioned under the
ball). Use cotton rods or similar. A flexible protec-
tive keyboard membrane (WetEx
keyboard against dust, liquids and dirt is available
for purchase.
5 RSI syndrome
RSI syndrome
RSI stands for "Repetitive Strain Injury". RSI
results from small, continually repeated move-
ments.
Typical symptoms are discomfort in the fingers or
neck. For further information see: www.cherry.de/
english/service/servicedownload_rsi.htm
1 Set up your workspace for maximum ergonomic
benefit.
2 Position the keyboard in such a way that your
upper arms and wrists are on either side of your
body and are stretched out.
3 Take several short breaks, with stretching exer-
cises if necessary.
4 Change the position of your body often.
6 Disposal
Dispose of the old unit via a collect-
ing point for electronic scrap or via
your dealer.
4
®
) to protect the
7 Contact
ZF Electronics GmbH
Cherrystraße
91275 Auerbach
Germany
www.cherrycorp.com
www.cherry.de
E-mail: info@cherry.de
Telephone:
Sales: +49 (0) 180 5 243779* (0180 5 CHERRY*)
Technical support: +49 (0) 180 5 919108*
(*14 euro cent/min. from German landlines, prices
may vary for calls made from mobile networks.)
Please have the following information on hand
when contacting technical support:
• Item and serial no. of the product
• Name and manufacturer of your system
• Operating system and, if applicable, installed
service pack version
8

General advice

Cherry, a brand of ZF Electronics GmbH,
continuously optimizes its products as new
technologies are developed. For this reason we
reserve the right to make technical alterations. The
evaluation of product reliability and the definition of
the product's technical performance are carried out
according to our own requirements in order to meet
internationally recognized regulations and
standards. Requirements in addition to these can
be met through mutual cooperation. Improper
usage, handling, storage and external influences
could lead to faults and defects during use.
We do not accept warranty for defects caused by
alterations to our product by the user and shall not
be held liable for unauthorized modifications. All
repairs must be made by us or an officially
appointed organization or person.
Possible compensation claims against
ZF Electronics GmbH or its nominated officers –
whatever the legal justification including physical or
stress related injuries – are excluded. Exceptions
to this exist in the case of intent or gross
negligence on the part of ZF Electronics GmbH,
infringements of Product Liability Law or in cases
of injury, bodily harm or risk to health. These
operating instructions only apply to the
accompanying product.
Full details can be obtained from your distributor or
direct from us.