HP Pavilion xt800 - Desktop PC User manual

hp pavilion home pc

upgrading and servicing

the pc

The information in this document is subject to change without

notice.

Hewlett-Packard® Company makes no warranty of any kind

with regard to this material, including, but not limited to, the

implied warranties of merchantability and fitness for a

particular purpose.

HP shall not be liable for errors contained herein or for

incidental or consequential damages in connection with the

furnishing, performance, or use of this material.

HP assumes no responsibility for the use or reliability of its

software on equipment that is not furnished by HP.

This document contains proprietary information that is

protected by copyright. All rights are reserved. No part of this

document may be photocopied, reproduced, or translated to

another language without the prior written consent ofHP.

Hewlett-Packard Company

Home Products Division

P.O. Box 4010

Cupertino, CA 95015-4010

USA

Hewlett-Packard is a registered trademark of Hewlett-Packard

Company in the United States of America and other

countries.

Other brand or product names are trademarks of their

respective holders.

Warning: The HP Pavilion PC may come with

software that allows you to copy audio files in

the MP3 format. Unauthorized reproduction

and distribution of audio MP3 files, or any

portion of them, can result in civil and criminal

penalties.

Features of the HP Pavilion

On the top of the chassis is a CD holder (A).

Store the CDs that came with the HP Pavilion

inside this compartment, so you can quickly

locate them if you ever need to reinstall any

ofthe system applications.

To connect components to the front of the

PC, flip up the port cover (B) and plug the

cables into the corresponding connectors.

For more information about these ports, see

“Connecting External Components” in the

User’s Guide.

Note: The power supply is pre-set for the country in

which you purchased the HP Pavilion. If you move

to another location, please make sure you check

the voltage requirements in the country you reside

before turning on the PC.

Opening the Computer

Warning: The HP Pavilion is heavy; be sure

to use ergonomically correct lifting

procedures when moving the computer.

Avertissement : L’ordinateur HP Pavilion

est lourd ; suivez des procédures

ergonomiques lorsque vous le déplacez.

Warning: Electrostatic discharge (ESD) can

damage disk drives, add-in cards, and other

components. If an ESD station is not available,

wear a wrist strap attached to a metal part of

the computer. Place cards on a conductive

foam pad or inside the conductive wrapper

they came in; do not place the cards on top

of the wrapper.

Avertissement : Des décharges

électrostatiques peuvent endommager les

unités de disque, cartes d'extension et autres

composants. Si vous ne disposez pas d'une

station de protection contre les décharges

électrostatiques, portez un bracelet

antistatique relié à une partie métallique de

l'ordinateur. Placez les cartes sur un tapis en

mousse conducteur ou dans leur emballage,

mais ne les posez jamais sur leur emballage.

Warning: Do not operate the system with

the cover removed. Always replace the

cover before turning on the system.

Avertissement : N’utilisez pas le système

lorsque son capot est ouvert. Remettez

toujours le capot en place avant de mettre le

système sous tension.

Before You Begin

Read the following items before attempting

to upgrade or service the computer:

nThese 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.

nSet 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.

nHP recommends that you use an antistatic

wrist strap and a conductive foam pad

when working on the system.

nDisconnect 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.

Removing the Side Panel

You must remove the side panel to add

memory, insert add-in cards, install or

remove drives, or change the battery.

1Turn off the computer and all peripherals.

2Disconnect the modem/phone cable.

3Disconnect the power cord and all other

attached cables (such as the keyboard,

mouse, and monitor).

4Loosen the two thumb screws on the right

side of the back panel. The first time you

loosen these screws you’ll need a flathead

screwdriver. (These screws do not detach;

they’ll stay on the side panel loosely until

you tighten them again.)

5Stand behind the computer, and place one

hand on top of the chassis.

6Grasp the handle (A) with your other hand

and pull the panel towards you until it

stops.

7Lift the panel up and out. Set the panel

aside.

Removing the Fan Duct

To access some components on the

motherboard, you may need to remove the

fan duct.

Note:Make sure the computer is turned off and the

modem/phone cable and power cord are

disconnected from the computer.

1Remove the side panel (see “Removing the

Side Panel” on page 3).

2Gently lay the computer on its side.

3To disengage the fan duct (B), push down

on the two tabs (C). You can push with

your fingers or a pen.

4Rotate the fan duct down and out to

remove it from the chassis.

Removing the Drive Cage

The HP Pavilion has two drive cages. The top

cage that holds the CD drive(s) is stationary.

The bottom cage holds the diskette and hard

drive and is removable. You may need to

remove this bottom drive cage to access

internal components or to add or replace a

hard drive.

Note: Make sure the computer is turned off and the

modem/phone cable and power cord are

disconnected from the computer.

1Remove the side panel (see “Removing the

Side Panel” on page 3).

2Gently lay the computer on its side.

3Remove the fan duct (see “Removing the

Fan Duct” on page 5).

4Remove the power and IDE cables from the

back of the diskette and hard drives. Make

note of each connection before

disconnecting the cables.

5Push down on the drive cage release tab

(D).

6Hold the release tab down as you rotate

the cage up and lift it out.

Adding Memory

The motherboard contains 168-pin DIMM

(dual-inline memory module) sockets; the

exact number of sockets depends on which

model you have. You can install these types

of DIMMs in the system:

n64 MB SDRAM

n128 MB SDRAM

n256 MB SDRAM

All installed memory modules must be 168-

pin unbuffered SDRAM (synchronous

dynamic random access memory) DIMMs

and compliant with the Intel®PC SDRAM

Unbuffered DIMM Specification.

The HP Pavilion ships with one or more

DIMMs, but you can replace the existing

DIMM(s) with higher capacity ones.

Installing a DIMM

To install a DIMM:

1Turn off the computer and all peripherals.

2Disconnect the modem/phone cable.

3Disconnect the power cord and all other

attached cables (such as the keyboard,

mouse, and monitor).

4Remove the side panel (see “Removing the

Side Panel” on page 3).

5Gently lay the computer on its side.

6Locate the DIMM sockets on the

motherboard.

Note: If all of the DIMM sockets are filled, you need to

remove one of the DIMMs (see “Removing a

DIMM” on page 9).

7If necessary to reach the DIMM socket,

remove the fan duct (see “Removing the

Fan Duct” on page 5).

8If necessary to reach the DIMM socket,

remove the drive cage (see “Removing the

Drive Cage” on page 5).

9Move any cabling out of the way,

ifnecessary.

10 Push down on the two retaining clips on

the ends of the DIMM socket.

11 Holding the new DIMM by its edges only,

remove it from the antistatic packaging.

(Avoid touching the memory chips or the

gold contacts on the DIMM.) The DIMM

has two small notches on the lower edge

that fit into raised bumps in the DIMM

socket.

12 Hold the DIMM in alignment with the

socket, aligning the notches with the

bumps.

13 Push straight down on top of the DIMM

until it is fully seated in the socket. The

retaining clips on the ends of the socket

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