Preparing The Computer; Before Opening The Computer - HP CQ5110F - Presario - 3 GB RAM Upgrade And Service Manual

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Upgrading and Servicing Guide

Preparing the computer

Before you upgrade any component in your computer, you must prepare it so that you can
safely handle it and the components.
Read the following items before attempting to upgrade or service the computer:
1 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.
2 Write down and save the system model and serial numbers, all installed options, and
other information about the system. It is easier to consult this information than to open
and examine the computer.
3 It is recommended that you use an antistatic wrist strap and a conductive foam pad
when working on the system.
WARNING: Before you remove the front and side panels of the computer,
always disconnect the modem cord from the telephone system, and then
disconnect the computer from the power source. Failure to do so can result in
personal injury or equipment damage.

Before opening the computer

To avoid injury and equipment damage, always complete the following steps in this order
before opening the computer:
1 Remove any optical disc (CD or DVD) from the computer.
2 Shut down the computer.
3 Disconnect the modem/telephone cable, if present.
CAUTION: To reduce the risk of personal injury from electrical shock or hot
surfaces, disconnect the power cord from the wall outlet, and allow the
internal system components to cool before touching them.
4 Disconnect the power cord from the electrical outlet, and then from the computer.
5 Disconnect all other attached cables (such as the keyboard, mouse, and
monitor cables).
6 Disconnect all external devices.
CAUTION: Static electricity can damage the electronic components of the
computer or optional equipment. Ensure that you are discharged of static
electricity by briefly touching a grounded metal object.