HP Pavilion xl900 - Desktop PC User manual

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upgrading and
servicing the pc
English

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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 of HP.
Hewlett-Packard Company
Home Products Division
P.O. Box 4010
Cupertino, CA 95015-4010
USA
© Hewlett-Packard Company, 2001. All rights reserved.
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.

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Depending on the internal design of your PC, different instructions for upgrading and servicing your
computer are applicable. To determine which instructions are appropriate for your computer, open the
door on top of the chassis, and compare the inside with the two drawings below. If you see a hole inside,
refer to page 1. If you do not see a hole, refer to page 29.
Hole
Upgrading and Servicing the PC

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upgrading and servicing the pc 1
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Features of the HP Pavilion home PC .... 3
Opening the Computer......................... 4
Before You Begin ............................................. 5
Removing the Front Drive Cover......................... 6
Removing the Side Panel................................... 7
Sliding the Drive Cage In and Out ..................... 8
Opening the Back Panel Door ......................... 10
Adding Memory ................................ 11
Installing a DIMM .......................................... 12
Removing a DIMM......................................... 14
Installing Add-In Cards ...................... 15
What Is Plug and Play?................................... 17
If the New Card or Device Isn’t Working........... 17
Adding and Removing Drives .............18
Removing the Hard Drive ................................18
Replacing the Diskette Drive.............................20
Replacing an Optical Drive..............................22
Replacing the Battery .........................24
Closing the Computer .........................25
Replacing the Front Drive Cover .......................25
Replacing the Side Panel................................. 27
Regulatory and Safety Information.....55
ENERGY STAR Compliance .............................58
Operating Specifications................................. 65
Contents

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Features of the
HP Pavilion home PC
On the top of the chassis is a CD holder (A).
You can store the CDs that came with the
HP Pavilion inside this compartment. If you ever
need to reinstall any of the system applications,
you will be able to quickly locate the CDs.
The door located below the CD-ROM drive
covers two drive slots (B). The Zip or CD-Writer
drive, if included with the system, is behind
this door.
To connect components to the front of the PC, flip
up the port cover (C) and plug the cables into the
available connectors. For example, the serial port
(used for a digital camera) is located here.
A
B
C

4hp pavilion home pc
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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 attache
d
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.

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Before You Begin
Read the following items before attempting to
upgrade or service the computer:
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.
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.
You need a #2 Phillips screwdriver and a
medium flat-blade screwdriver. HP
recommends that you use an antistatic wrist
strap and a conductive foam pad when
working on the system.
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.
To gain access to the inside of the computer, you
need to remove the side panel. For some tasks,
you might also need to remove the front drive
cover, slide out the drive cage, or open the back
panel door.

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Removing the Front Drive Cover
The front of the computer has a removable and
replaceable cosmetic cover. You must remove the
cover in order to install a new front cover, slide
out the drive cage, or add a new internal drive.
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).
4Open the door on the CD holder (on the top of
the chassis).
5In the hole on top of the chassis (A), insert a
pointed object (such as a paper clip or pen).
The drive cover pops open.
A

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6Pull the cover up and out to remove.
Note:
If you are adding a drive to the lower bay, you
must first remove its insert by pulling the right
side of the insert (B) toward you.
B
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 àla
fin de ce document avant d’installer et
d’alimenter votre système informatique.
Removing the Side Panel
You must remove the side panel to access internal
components and to slide the drive cage out. You
need to remove the side panel to add memory,
replace drives, insert add-in cards, 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 screws on the right side of the
back panel. The first time you loosen these
screws you’ll need to use a screwdriver. (These
screws do not detach; they’ll stay on the panel
loosely until you tighten them again.)

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5Place the fingers of your right hand in the
indentation on the side panel and your thumb
on the back panel.
6Pull backward on the panel and rotate the
front end of it to the right. It will disengage.
7Remove the panel and set aside.
Sliding the Drive Cage In and Out
The drive cage must be moved out to allow
access to some components on the motherboard.
You may need to slide the drive cage out in order
to add memory, insert add-in cards, replace an
optical drive, or change the battery.
Note: Make sure the computer is turned off and the
modem/phone cable and power cord are
disconnected from the computer.
To slide the drive cage out:
1Remove the front drive cover (see “Removing
the Front Drive Cover” on page 6).
2Using a #2 Phillips screwdriver, remove the
screw below the diskette drive (A).

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A
3Remove the side panel (see “Removing the
Side Panel” on page 7).
4While facing the front of the computer, reach
under the top edge of the left side of the
chassis and pull the latch (B) out. Continue to
hold the latch in this position while you
complete the next step.
BC
5Grasp the top lip of the drive cage (C), and
pull it toward you.
6Release the latch.
Note: In order to slide the drive cage out sufficiently,
you may need to disconnect the cables going to
the drives. (On some cables, you may need to
press the locking lever on the connector.) Be
sure to note the placement of these connections;
you will need this information when
reconnecting the cables.

10 hp pavilion home pc
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To replace the drive cage:
1Push against the front panel with your right
hand while pushing against the back panel
with your left hand. The drive cage latch
engages when the drive cage is completely
pushed in.
2Replace the screw under the diskette drive.
3Reconnect any power supply cables you may
have disconnected.
Opening the Back Panel Door
You must open the door on the back panel to
access certain components on the motherboard.
(The power supply and fan are attached to the
back panel door.)
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 7).
2Remove the screws securing the back
panel door.

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3Swing the door 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:
64 MB SDRAM
128 MB SDRAM
256 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.

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Installing 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 7).
5If necessary to reach the DIMM socket, slide
the drive cage out (see “Sliding the Drive
Cage In and Out” on page 8).
6Gently lay the computer on its side.
7If necessary to reach the DIMM socket, open
the back panel door (see “Opening the Back
Panel Door” on page 10).
8Locate 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 14).
9Move any cabling out of the way, if necessary.
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.

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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 automatically lock
into position when the DIMM is fully seated.
To reassemble the computer:
1If you moved any cabling, restore the cable
connections and routing.
2If you opened the back panel door, close the
door and replace the screws.
3If you moved the drive cage, slide the drive
cage back in (see “Sliding the Drive Cage In
and Out” on page 8).
4Replace the side panel (see “Replacing the
Side Panel” on page 27).
5Reconnect the power cord and all other
cables.
6Reconnect the modem/phone cable.
7Turn on the computer and all peripherals.

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Removing 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 7).
5If necessary to reach the DIMM socket, slide
the drive cage out (see “Sliding the Drive
Cage In and Out” on page 8).
6If necessary to reach the DIMM socket, open
the back panel door (see “Opening the Back
Panel Door” on page 10).
7Gently lay the computer on its side.
8Locate the DIMM sockets on the motherboard.
9Move any cabling out of the way, if necessary.
10 Push down on the two retaining clips on the
ends of the DIMM socket until the DIMM pops
out of the socket.
Warning: Do not pull the DIMM out of
the socket. Use the retaining clips to eject
the DIMM.
Avertissement : Ne tirez pas
directement sur le module DIMM.
Servez-vous des clips pour éjecter le
module DIMM.
11 Holding the DIMM by its edges only, lift it
away from the socket. Store it in its antistatic
packaging.
To install a new DIMM in this socket, see
“Installing a DIMM” on page 12.

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Installing Add-In Cards
At some point, you may add an AGP or PCI card
to the computer to accommodate a new
component, such as a scanner, or to upgrade an
existing card.
You need a #2 Phillips screwdriver and a
medium flat-blade screwdriver. You also need
any software (for example, drivers) supplied with
the card.
Warning: Do not overload the system
by installing add-in cards that draw
excessive current. The system is designed
to provide 2 amps (average) of +5 V
power for each board/card in the
computer. The total +5 V current draw in
a fully loaded system (one with all add-in
card slots filled) must not exceed the total
number of slots multiplied by 2 amps.
Avertissement : Ne surchargez pas
l’ordinateur en installant des cartes
d’extension qui consomment beaucoup de
courant. L’ordinateur est conçu pour
fournir un courant de 2 ampères (en
moyenne), +5 volts, à chaque carte
installée sur l’ordinateur. La
consommation totale de courant de +5 V
sur un ordinateur entièrement chargé
(dont tous les logements de cartes sont
occupés) ne doit pas excéder le nombre
total de supports multiplié par 2 ampères.
To add or replace an add-in card:
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 7).

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5If necessary to reach the card slots, slide the
drive cage out (see “Sliding the Drive Cage In
and Out” on page 8).
6Open the back panel door (see “Opening the
Back Panel Door” on page 10).
7Gently lay the computer on its side.
8If there is a screw on the expansion slot cover
(A), remove it and set aside.
A
9If you’re adding a new card in a previously
unused slot, you need to remove the expansion
slot cover.
Warning: Be careful of the sharp edges
on the expansion slot cover.
Avertissement : Soyez prudent, car les
bords du couvercle du logement
d’extension sont tranchants.
Note: If replacing a card, first disconnect any external
and/or internal cables attached to the card.
Hold the metal bracket and the far top corner of
the card. Carefully remove the card by pulling
the card straight out of the expansion slot.
10 Insert the new card in the slot and push
straight down. Make sure the card is properly
seated.
11 Reinstall the screw that holds the card to the
back panel.
Note: If you didn’t have a screw to remove in step 8
above, you need to purchase a 6-32 x .25-inch
Phillips screw to hold the card to the back
panel.