6
Field Service
6.1
Introduction
This section contains preventive and corrective maintenance procedures for the
Extensa 450 Series Notebook Computers. The first part of the section describes the
computer cleaning procedures and preferred handling procedures for sensitive
components (e.g. disk drives, batteries).
The second part of the section identifies all field replaceable parts; the remainder of
the section contains removal and replacement procedures for the field replaceable
parts.
6.2
Preventive Maintenance
Preventive maintenance is limited to cleaning the plastic case, the keyboard, and
the display screen.
6.2.1
Cleaning the Computer
When it is necessary to clean the plastic case and keyboard, use a soft, lint-free
cloth, slightly dampened with a mild detergent solution or use the contents of any
commercially available computer cleaning kit.
c
Caution: Never use alcohol, petroleum-based solvents, or harsh deter-
gents to clean your computer. Also never spray any liquids directly on
the computer case, keyboard, or screen. If the liquid-crystal display
(LCD) screen has become smeared or dusty, clean the screen by first ap-
plying a mild glass cleaner to a soft, clean, lint-free cloth, and gently
wipe the glass. Never apply liquids directly on the screen surface.
c
Caution : Do not use paper towels to clean the display screen. Paper can
scratch the display screen matte.
Field Service 6-1
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