HP 79XXY User manual

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upgrading and
servicing the pc

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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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Features of the HP Pavilion home PC .... 1
Opening the Computer ......................... 2
Before You Begin .............................................. 3
Removing the Side Panel ................................... 4
Removing the Fan Duct ...................................... 5
Removing the Drive Cage .................................. 6
Adding Memory................................... 7
DIMMs ............................................................ 8
DDR DIMMs ..................................................... 8
RIMMs............................................................. 8
Installing a Memory Module .............................. 9
Removing a Memory Module ........................... 11
Installing Add-In Cards....................... 12
What Is Plug and Play? ................................... 14
If the New Card or Device Isn’t Working ........... 14
Adding and Removing Drives............. 15
Installing a Second Hard Drive......................... 15
Removing the Preinstalled Hard Drive ............... 16
Replacing the Diskette Drive............................. 17
Replacing the Optical Drive............................. 18
Replacing the Battery......................... 20
Closing the Computer......................... 21
Replacing the Drive Cage................................ 21
Replacing the Fan Duct ................................... 23
Replacing the Side Panel................................. 23
Regulatory and Safety Information .... 25
ENERGY STAR Compliance ............................. 28
Operating Specifications................................. 41
Index ................................................ 42
Contents

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Features of the
HP Pavilion home PC
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
of the 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.
B
A
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.

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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 l
e
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 reliéàune 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:
3These 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.
3Set 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.
3HP recommends that you use an antistatic wrist
strap and a conductive foam pad when
working on the system.
3Disconnect 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
àla
fin de ce document avant d’installer et
d’alimenter votre système informatique.

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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 thumbscrews 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.
A
7Lift the panel up and out. Set the panel aside.

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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 4).
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.
C
B
4Rotate the fan duct down and out to remove it
from the chassis.

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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 4).
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).
D
6Hold the release tab down as you rotate the
cage up and lift it out.

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Adding Memory
The motherboard contains sockets for either
DIMMs (dual in-line memory modules), DDR
DIMMs (double data rate dual in-line memory
modules), or RIMMs (Rambus in-line memory
modules), depending on which HP Pavilion
model you have. To determine which type of
memory module your HP Pavilion uses, go to the
HP At Home Web site listed in the
Warranty and
License Information
, and look at the online
HP Pavilion technical specifications.
The motherboard contains 168-pin DIMM
sockets, 184-pin DDR DIMM sockets, or 184-pin
RIMM sockets. The exact number of sockets
depends on which model you have.
DIMM
RIMM
DDR DIMM
Warning:
Using the wrong type of
memory module could damage the
system.
Avertissement :
L’utilisation d’un type
inappropriéde module de mémoire peut
endommager votre système.

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DIMMs
DIMMs must be 168-pin unbuffered SDRAM
(synchronous dynamic random access memory),
compliant with the Intel®
PC SDRAM Unbuffered
DIMM Specification
. The HP Pavilion ships with
one or more memory modules, but you can
replace the existing memory module(s) with
higher-capacity ones. You can install 64 MB,
128 MB, or 256 MB memory modules in the
computer.
DDR DIMMs
DDR DIMMs must be 184-pin unbuffered DDR
SDRAM (double data rate synchronous dynamic
random access memory). The HP Pavilion ships
with one or more memory modules, but you can
replace the existing memory module(s) with
higher-capacity ones. You can install 64 MB,
128 MB, or 256 MB memory modules in the
computer.
RIMMs
RIMMs must be 184-pin RDRAM (Rambus
dynamic random access memory), non-ECC (non-
error correction checking), compliant with the
Rambus/Intel specification.
The motherboard has four RIMM sockets that are
for a dual-channel configuration. The following
requirements must be met:
3Rambus signaling level technology permits 600
and 800 MHz transfer rates. The HP Pavilion
uses PC600 or PC800 RDRAM modules.
3All four RIMM sockets must be filled. If you do
not populate a socket with a RIMM, the empty
socket must be filled with a C-RIMM (continuity
RIMM). Two C-RIMMs are included on the
motherboard.
Note:
A C-RIMM does not contain any memory —it is
only a placeholder card used to close the
memory circuit. C-RIMMs are necessary to
avoid breaking the signal lines, which are a
serial connection in a Rambus interface; this
assures the electrical integrity.

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3RIMMs work in identical pairs, so they must be
from the same vendor, have the same speed,
and memory size density within each channel
(see the memory table).
3When C-RIMMs are used to fill empty sockets,
they must be placed in the RIMM A2 and
RIMM B2 sockets. The RIMMs must be inserted
in the RIMM A1 and RIMM B1 sockets.
The following table illustrates the initial
combinations of RIMMs you can use and the
insertion sequence.
Channel 1 Channel 2
Total
Memory
RIMM A1
socket
RIMM A2
socket
RIMM B1
socket
RIMM B2
socket
128 MB 64 MB
RIMM
C-RIMM 64 MB
RIMM
C-RIMM
256 MB 64 MB
RIMM
64 MB
RIMM
64 MB
RIMM
64 MB
RIMM
256 MB 128 MB
RIMM
C-RIMM 128 MB
RIMM
C-RIMM
384 MB 128 MB
RIMM
64 MB
RIMM
128 MB
RIMM
64 MB
RIMM
512 MB 128 MB
RIMM
128 MB
RIMM
128 MB
RIMM
128 MB
RIMM
512 MB 256 MB
RIMM
C-RIMM 256 MB
RIMM
C-RIMM
Installing a Memory Module
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 and the fan duct (see
“Removing the Side Panel”on page 4 and
“Removing the Fan Duct”on page 5).
5Locate the memory sockets on the
motherboard.
DIMM and RIMM
DDR DIMM
Note:
If all of the memory sockets are filled, you need
to remove one of the memory modules (see
“Removing a Memory Module”on page 11).
6Move any cabling out of the way, if necessary.

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7Push down the two retaining clips on the ends
of the memory socket.
8Holding the new memory module by its edges
only, remove it from the antistatic packaging.
(Avoid touching the memory chips or the gold
contacts on the module.) The memory module
has one or two small notches on the lower
edge that fit into raised bumps in the memory
socket.
9Hold the memory module in alignment with the
socket, aligning the notches with the bumps.
DIMM RIMM
DDR DIMM
10 Push straight down on top of the memory
module until it is fully seated in the socket. The
retaining clips on the ends of the socket
automatically lock it into position when the
memory module is fully seated.
To reassemble the computer:
1If you moved any cabling, restore the cable
connections and routing.
2Replace the fan duct and the side panel (see
“Closing the Computer”on page 21).
3Reconnect the power cord and all other
cables.
4Reconnect the modem/phone cable.
5Turn on the computer and all peripherals.

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Removing a Memory Module
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 and the fan duct (see
“Removing the Side Panel”on page 4 and
“Removing the Fan Duct”on page 5).
5Locate the memory sockets on the
motherboard.
6Move any cabling out of the way, if necessary.
7Push down the two retaining clips on the ends
of the socket until the memory module pops out
of the socket.
DIMM and RIMM
DDR DIMM
Warning:
Do not pull the memory
module out of the socket. Use the
retaining clips to eject the module.
Avertissement :
Ne tirez pas
directement sur le module de mémoire.
Servez-vous des clips pour l’éjecter.
8Holding the memory module by its edges only,
lift it away from the socket. Store it in its
antistatic packaging.
To install a new memory module in this socket,
see “Installing a Memory Module”on page 9.

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Installing Add-In Cards
At some point, you may want to add a PCI or
AGP card to the computer to accommodate a
new component, such as a scanner, or to
upgrade an existing 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, àchaque 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 multipliépar
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 4).
5Gently lay the computer on its side.

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6To prepare an empty card slot for a new card,
loosen the screw of the expansion slot cover of
the empty slot (E). Remove the expansion slot
cover of the empty slot.
E
Warning:
Be careful of the sharp edges
on the expansion slot cover.
Avertissement :
Soyez prudent, car les
bords du couvercle du support
d’extension sont tranchants.
7If you are replacing a card, disconnect any
external and/or internal cables attached to the
card.
8Loosen the screw on the bracket of the card
you are replacing (F).
9Hold 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 into the slot and push
straight down. Make sure the card is properly
seated.
11 Attach the screw to secure the card you have
replaced (F).
F

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To reassemble the computer:
1Replace the side panel (see “Replacing the
Side Panel”on page 23).
2Reconnect the power cord and all other
cables.
3Reconnect the modem/phone cable.
4Turn on the computer and all peripherals.
5Install any software drivers supplied by the
card manufacturer.
What Is Plug and Play?
“Plug and Play”describes the ability to add and
remove add-in cards, memory, and peripherals
without any special procedures (such as resetting
jumpers and testing for system conflicts). The
system BIOS (basic input/output system) finds
these components and adds them to the system.
You do not have to run the BIOS setup program.
If the New Card or Device Isn’t
Working
Read through the card manufacturer’s installation
instructions, and recheck all connections,
including those to the card, power supply,
keyboard, and monitor. If the problem still exists,
run the BIOS setup program and load the default
settings, and then save and exit.

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Adding and Removing
Drives
You can install a second hard drive into the
system or replace the existing hard drive. In
addition, you can replace the existing diskette or
optical drives.
Installing a Second Hard Drive
The HP Pavilion has an empty 3.5-inch drive bay
to accommodate an additional hard 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).
4Remove the side panel (see “Removing the
Side Panel”on page 4).
5Remove the drive cage (see “Removing the
Drive Cage”on page 6).
Note:
Make sure the jumper on the new drive is in the
CS (Cable Select) position.
6Slide the new drive into the empty bay in the
drive cage, until the screw holes align.
7Install the two screws on the top of the drive
cage and the one screw on the bottom of the
drive cage.
8Replace the drive cage (see “Replacing the
Drive Cage”on page 21).
9Attach the power cable to the back of the
drive.
10 Attach the connector marked “Master”on the
IDE ribbon cable to the back of the primary
hard drive. After this primary connection is
attached, twist the remaining part of the cable
marked “Slave”on that same IDE ribbon cable
and connect it to the secondary hard drive.
11 Connect the IDE cable to the motherboard.

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To reassemble the computer:
1Replace the side panel (see “Replacing the
Side Panel”on page 23).
2Reconnect the power cord and all other
cables.
3Reconnect the modem/phone cable.
4Turn on the computer and all peripherals.
5Install any software drivers supplied by the
drive manufacturer.
Removing the Preinstalled Hard
Drive
You need to remove the hard drive from the
chassis if you want to replace it with a higher-
capacity drive or if you want to safeguard your
data when sending the computer out to be
repaired.
To remove the preinstalled hard 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).
4Remove the side panel (see “Removing the
Side Panel”on page 4).
5Remove the drive cage (see “Removing the
Drive Cage”on page 6).
6Remove the two screws on the top of the hard
drive and the one screw on the bottom of the
hard drive.
7Pull the hard drive out, and store the drive and
screws in a safe location.
8Replace the drive cage and the side panel (see
“Closing the Computer”on page 21).