C h a p t e r 6C h a p t e r 6Field Service
Service Guide 6-1
6.1. Introduction
This chapter contains general preventive and corrective maintenance procedures that apply to all
members of the Extensa 67x Series Notebook Computers. The first part of the chapter describes
the computer cleaning procedures and preferred handling procedures for sensitive components (e.g.
disk drives, batteries).
The second part of the chapter identifies all field-replaceable parts; the remainder of the chapter
contains removal and replacement procedures for the field-replaceable parts.
6.2. Preventive Maintenance
Preventive maintenance is limited to cleaning the plastic case, 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.
Caution: 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 first with a
soft, clean, lint-free cloth and gently wipe the glass. If the glass is still smeared, use
distilled water or a 25% solution of alcohol and distilled water.
Caution: Do not use paper towels to clean the display screen. Paper can scratch the display
screen matte.
6.2.2 Handling the Computer
The notebook computer requires reasonable care and handling for extended life. Some of the
precautions to follow to protect your computer against accidental damage include:
• Never pick up or carry the unit by the cover
• Do not force the cover beyond its fully opened position (about 180 degrees)
• Never subject the computer to harsh environments (dusty areas or areas of rapidly changing
temperatures)
• Never place anything on top of the computer, particularly when it is operating or charging (could
result in overheating and damage to the computer).
• Never move the computer while the hard drive is rotating (press the Suspend button to put the
computer in a Sleep mode before closing cover).
• Never expose the computer hard disk drive(s) or disks to strong magnetic fields such as those
generated by transformers, speakers, or telephone handsets.