Compaq Presario Desktop Products
Upgrading and
Servicing Guide
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table of contents
safety information.......................................................................... 1
opening and closing the pc............................................................. 1
preparing the pc.......................................................................................1
before opening the pc...............................................................................1
after closing the pc ...................................................................................2
removing the side panel ............................................................................2
replacing the side panel............................................................................2
removing the front panel............................................................................2
replacing the front panel ...........................................................................3
locating components inside the PC..............................................................3
removing and replacing drives....................................................... 3
removing a drive ......................................................................................3
replacing or adding a drive.......................................................................4
adding memory ............................................................................. 6
removing a memory module.......................................................................6
installing a memory module .......................................................................6
removing or installing an add-in card ............................................ 7
removing an add-in card ...........................................................................7
installing an add-in card............................................................................8
replacing the battery...................................................................... 8
Upgrading and Servicing Guide iii
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iv Upgrading and Servicing Guide
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• Write down and save the system model and serial
numbers, all installed options, and other
information about the system. It will be easier to
consult this information than to open up and
examine the PC.
• Compaq recommends that you use an antistatic
wrist strap and a conductive foam pad when
working on the system.
safety information
This product has not been evaluated for connection to
an “IT” power system (an AC distribution system with
no direct connection to earth, according to
IEC 60950).
WARNING: Please read “safety
information” in the User’s Guide before
installing and connecting your system to
the electrical power system.
WARNING: Always disconnect the modem
cord from the telephone system, and then
disconnect the PC from the power source
before removing the front and side panels
of the PC. Failure to do so before you
open the PC or do any procedures can
result in personal injury or equipment
damage.
opening and closing the pc
before opening the pc
1 Remove any diskette or optical disc (CD or DVD)
from the PC.
2 Click the Start button, and then click Turn Off
Computer. Click Turn Off.
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.
preparing the pc
Before you upgrade any component in your PC, you
need to prepare the PC so that you can safely handle
it and the components.
4 Disconnect the power cord from the electrical outlet
and then from the PC.
Read the following items before attempting to upgrade
or service the PC.
5 Disconnect all other attached cables (such as the
keyboard, mouse, and monitor) and all external
devices.
• 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.
CAUTION: Static electricity can damage
the electronic components of the PC or
optional equipment. Ensure that you are
discharged of static electricity by briefly
touching a grounded metal object.
Upgrading and Servicing Guide 1
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after closing the pc
replacing the side panel
To avoid injury and equipment damage, always
follow this procedure in this order after closing the PC.
1 Place the side panel in the proper position on the
chassis and slide it into place.
1 Reconnect the power cord.
WARNING: To reduce the risk of electrical
shock, fire, or damage to the equipment,
do not plug telecommunications or
telephone connectors into the network
interface card (NIC) (labeled as an
Ethernet connector).
2 Reconnect the modem/telephone cable, and all
other cables (such as the keyboard, mouse, and
monitor) and external devices.
3 Turn on the PC and all peripherals.
4 If you installed an add-in card, install any software
drivers supplied by the card manufacturer.
2 Ensure that the hole for the thumbscrew aligns
with the hole in the chassis, and replace the
thumbscrew (D).
removing the side panel
1 Remove the side panel by loosening the screw (D)
that secures the panel to the PC chassis.
removing the front panel
This procedure is necessary only when removing or
replacing an optical drive, memory card reader,
diskette drive, or the hard disk drive.
1 Press and hold down the square button (1) near the
top front of the inside of the chassis. Press one tab
(2), and then press the other tab (3), toward the
outside edge of the chassis.
2 Slide the panel back about 1 inch (2.5 cm), and
then lift it off the unit.
WARNING: Beware of sharp edges inside
the chassis.
2 Remove the front panel.
2
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replacing the front panel
removing and replacing
drives
1 Align the top of the front panel with the top of the
chassis front.
Your PC has several drives that you can replace or
upgrade. See the preceding topic, “locating
components inside the PC“ for drive type and
location.
2 Press the panel onto the chassis at the top and at
each side near the bottom until the panel snaps into
place.
CAUTION: Back up your personal files on
the hard disk drive to an external
storage device, such as a CD, before
removing the hard disk drive. Failure to
do so will result in data loss. After
replacing the hard disk drive, you need
to run System Recovery using the
recovery discs to load the factory-
installed files. See the User’s Guide for
details about the recovery procedure.
You can add an optical drive into an empty lower
optical drive bay.
locating components inside the PC
IMPORTANT: Before adding a new optical drive,
make sure that it is compatible with the Microsoft®
Windows® XP operating system. Also, make sure you
have the correct software and drivers for the optical
drive to work with the operating system.
removing a drive
1 Complete the procedures to prepare the PC, to
remove the side panel, and to remove the front
panel. See “opening and closing the pc“ on
page 1.
2 Locate the drive you want to remove.
A Upper optical drive bay, may be a CD-ROM, CD-RW,
DVD-ROM, DVD+RW/+R, or combination drive
B Lower optical drive bay, may be empty (blank plate) or a
CD-ROM, CD-RW, DVD-ROM, DVD+RW/+R, or
combination drive
C Memory card reader (select models)
D Diskette (floppy) drive (select models)
E Front connector panel (no replacement instructions)
F Hard disk drive
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3 Release the drive from the chassis by lifting the
tab (1) on the latch drive bracket, and then sliding
(2) the drive partway out of the bay. (The latch
drive bracket secures the drives in their respective
positions in the chassis.)
4 Disconnect the power cable (1) and data cable (2)
from the back of the drive you want to remove, as
indicated in the following illustrations. Use a gentle
rocking motion. Some units may have a sound
cable. If so, disconnect the sound cable (3).
disconnecting the hard disk drive cables
5 Pull the drive out of the drive bay.
6 If you are replacing the old drive with a new drive,
remove the four guide screws (two on each side)
from the old drive. You need these screws to install
the new drive.
disconnecting the optical drive cables
replacing or adding a drive
1 If necessary, remove the existing drive. See
“removing a drive“ on page 3.
2 If you are adding a drive to an empty lower optical
drive bay, you must remove the blank plate from
the bay. To do so, insert a flat screwdriver into the
blank plate slot (C) and rotate the screwdriver to
break the blank plate out of the chassis. Discard the
blank plate.
disconnecting the memory card reader drive
cable
disconnecting the diskette (floppy) drive cables
4
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3 Make sure the jumper on the new optical drive or
hard drive is in the CS (Cable Select) position. Your
drive may vary from the illustration.
NOTE: An optical drive may include a sound cable.
Connect this cable also.
cable select jumper
connecting the memory card reader drive cable
4 Install four guide screws on the sides of the new
drive (two on each side). The screws help guide the
drive into its proper position in the bay.
5 Slide the drive partway into the drive bay, making
sure to align the guide screws with the guide slots.
connecting the diskette (floppy) drive cables
6 Reconnect the power and data cables to your drive
as indicated in the following illustrations.
connecting the hard disk drive cables
7 Push the drive the rest of the way into the bay until
the drive snaps into place.
8 Complete the procedures to replace the front panel,
replace the side panel, and close the PC. See
“opening and closing the pc“ on page 1.
connecting the optical drive cables
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5 Push down the two retaining clips on the ends of
the memory socket until the memory module pops
out of the socket.
adding memory
Your PC comes with random access memory (RAM),
which temporarily stores data and instructions on your
PC. The PC ships with one or more memory modules,
but you can replace the existing memory module(s)
with higher-capacity ones.
The motherboard contains sockets for DDR DIMMs
(double data rate dual in-line memory modules). The
exact number of sockets and type of DDR memory
module depends on which model PC you have.
WARNING: Do not pull the memory
module out of the socket. Use the
retaining clips to eject the module.
6 Lift the memory module from the memory socket.
A DDR DIMM
To determine which type of memory module your PC
uses, and for specific memory module information
and specifications, go to the Web site listed in your
Warranty and Support Guide and click the
Support link.
installing a memory module
Upgrade the memory in your PC with memory of the
same type and speed as the memory originally
installed in your PC.
WARNING: Using the wrong type of
memory module could damage the
system.
CAUTION: When handling a memory
module, be careful not to touch any of
the contacts. Doing so may damage the
module.
removing a memory module
1 Open both latches of the memory module socket.
1 Complete the procedures to prepare the PC and to
remove the side panel. See “opening and closing
the pc“ on page 1.
• If you are replacing a memory module, put the
new memory module in the same memory slot
from which the old memory was removed.
2 Gently lay the PC on its side.
Or
3 Locate the memory sockets on the motherboard.
• If you are adding a memory module, install the
new module into the socket nearest the
preinstalled module, and install additional
modules in the next available sockets.
CAUTION: When handling a memory
module, be careful not to touch any of
the contacts. Doing so may damage the
module.
4 Move any cabling out of the way, if necessary.
6
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2 The memory module can be installed in only one
way. Match the notch on the module with the tab
on the memory socket (B). Push the module
carefully and firmly into the slot, ensuring that the
latches on both ends snap into place.
removing an add-in card
1 Complete the procedures to prepare the PC and to
remove the side panel. See “opening and closing
the pc“ on page 1.
2 Gently lay the PC on its side.
3 On the back of the PC, remove the screw from the
bracket cover for the add-in card slots, and then
remove the bracket cover.
3 Set the chassis upright.
4 Complete the procedures to replace the side panel,
and close the PC. See “opening and closing the
pc“ on page 1.
NOTE: If a blank screen is displayed after replacing or
adding a memory module, the memory is installed
incorrectly or it is the wrong type of memory. Remove
and reinstall the memory module.
4 Inside the PC, locate the add-in card slots on the
motherboard.
WARNING: Be careful of the sharp edges
on the add-in card slot cover.
removing or installing an
add-in card
An add-in card is a circuit board, such as a PCI or an
AGP card that fits into a PC add-in card slot. Your PC
contains several add-in card slots that can be used to
add components to your PC. The PC component
configurations vary by model.
5 Remove the slot cover.
Or
Holding the card at each end, carefully rock it back
and forth until the connectors pull free from the
socket, and then remove the card. Be sure not to
scrape the card against the other components.
Store the old card in the anti-static packaging that
contained your new 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.
A Phillips screwdriver is needed to remove, replace,
or add an add-in card.
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6 If you are not replacing the old add-in card with a
new add-in card, close the open slot by inserting
the metal slot cover into the opened slot.
replacing the battery
A lithium battery on the motherboard provides backup
power for the PC’s timekeeping capability. The battery
has an estimated life expectancy of seven years.
installing an add-in card
When the battery starts to weaken, the date and time
may be incorrect. If the battery fails, replace it with a
CR2032 lithium battery (3 volt, 220mAH rating) or an
equivalent battery.
1 Align the edge of the add-in card with the slot on
the chassis and gently but firmly press the card
straight down into the add-in card slot. The
whole connector should be seated properly in
the card slot.
WARNING: There is danger of explosion
if the battery is incorrectly replaced.
Replace only with the same, or
equivalent, type of battery. Discard used
batteries according to the manufacturer’s
instructions.
1 Complete the procedures to prepare the PC and to
remove the side panel. See “opening and closing
the pc“ on page 1.
2 Gently lay the PC on its side.
3 Remove any cabling, if necessary, to reach the
battery.
2 On the back of the PC, replace the bracket cover
4 Remove any memory modules, if necessary, to
reach the battery. See “adding memory“ on
page 6.
for the add-in card slots, and then install the screw.
5 To remove the battery, push the latch away from the
battery and lift the battery from the socket.
6 Install the new CR2032 battery in the socket, with
the positive (+) side facing the latch.
7 Replace memory modules or cables you removed.
8 Set the chassis upright.
9 Complete the procedures to replace the side panel,
and to close the PC. See “opening and closing the
pc“ on page 1.
3 Set the chassis upright.
4 Complete the procedures to replace the side panel,
and close the PC. See “opening and closing the
pc“ on page 1.
NOTE: 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.
Printed in
8
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