HP (Hewlett-Packard) 89XXY Personal Computer User Manual


 
upgrading and servicing the pc
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English
Before You Begin
Read the following items before attempting to
upgrade or service the computer:
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These procedures assume familiarity with the
general terminology associated with personal
computers and with the safety practices and
regulatory compliance required for using and
modifying electronic equipment.
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Set up an equipment log to record the system
model and serial numbers, all installed
options, and other information about the
system. If you need this information, it will be
easier to consult the log than to open up and
examine the system.
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HP recommends that you use an antistatic wrist
strap and a conductive foam pad when
working on the system.
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Disconnect the system from any
telecommunications links, networks,
or modems, and then disconnect the system
power source before performing any of the
procedures described in this guide. Failure to
do so before you open the system or do any
procedures can result in personal injury or
equipment damage.
Note:
Disconnect the modem/phone cable before
disconnecting the power cord from the system.
To gain access to the inside of the computer,
remove the side panel.
Warning:
Please read the
Additional
Safety Information
located at the end of
this document before installing and
connecting your system to the electrical
power system.
Avertissement :
Prière de lire les
consignes additionnelles de sécurité
à la
fin de ce document avant dinstaller et
dalimenter votre système informatique.