Compaq 5000 Series User manual

End-User Replaceable Parts Program
Replacing a System Board
5000 and 7000 Series

Notice
© 2000 Compaq Computer Corporation
COMPAQ and the Compaq logo Registered in U.S. Patent and Trademark
Office.
Microsoft and Windows are trademarks of Microsoft Corporation.
All other product names mentioned herein may be trademarks or registered
trademarks of their respective companies.
Compaq shall not be liable for technical or editorial errors or omissions
contained herein. The information in this document is subject to change
without notice.
The information in this publication is subject to change without notice and is
provided "AS IS" WITHOUT WARRANTY OF ANY KIND. THE
ENTIRE RISK ARISING OUT OF THE USE OF THIS INFORMATION
REMAINS WITH RECIPIENT. IN NO EVENT SHALL COMPAQ BE
LIABLE FOR ANY DIRECT, CONSEQUENTIAL, INCIDENTAL,
SPECIAL, PUNITIVE OR OTHER DAMAGES WHATSOEVER
(INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF
BUSINESS PROFITS, BUSINESS INTERRUPTION OR LOSS OF
BUSINESS INFORMATION), EVEN IF COMPAQ HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE
FOREGOING SHALL APPLY REGARDLESS OF THE NEGLIGENCE
OR OTHER FAULT OF EITHER PARTY AND REGARDLESS OF
WHETHER SUCH LIABILITY SOUNDS IN CONTRACT, NEGLIGENCE,
TORT, OR ANY OTHER THEORY OF LEGAL LIABILITY, AND
NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF
ANY LIMITED REMEDY.
The limited warranties for Compaq products are exclusively set forth in the
documentation accompanying such products. Nothing herein should be
construed as constituting a further or additional warranty.
Compaq Presario
First Edition (July 2000)
Part Number 202126-001

REPLACING THE SYSTEM BOARD 3
Replacing the
System Board
The System Board in your
computer is the home of the
central processing unit
(CPU) and its supporting
cards. The system board (or
Mother Board) lies on one
side of the computer
beneath the add-in cards.
The add-in cards, such as
modem, sound, and
graphics, are mounted
upright in slots on the
system board along with
other internal devices that
connect directly to the
system board.
Introduction
Your Compaq Presario Internet PC has an Easy Access panel
that makes accessing the internal parts easy. This document
describes how to remove and replace the system board
(see Figure 1-1).
Figure 1-1
Important: The view shown may vary slightly by model.

4REPLACING THE SYSTEM BOARD
Tools Needed
A Phillips screwdriver is needed to remove and replace the
system board.
Warranty Statement
Compaq provides these detailed instructions to ensure your
safety and to keep your PC from being damaged. Following
these instructions also ensures that your PC remains
warranted by Compaq.
Your replacement part is warranted for the longer of 90 days
from the date the part was delivered to you, or the original
One Year Limited Warranty that came with your Compaq
Presario.
Preparing Your Computer for Disassembly
Before beginning the removal and replacement procedure,
complete the following procedure:
1. Remove any diskette or compact discs (CDs) from the
computer.
2. Turn off the computer and any peripheral devices
connected to your computer (see Figure 1-2).
3. Disconnect the power cord from the electrical outlet, and
then from the computer (see Figure 1-3).
4. Disconnect all peripheral device cables from the computer.
Failure to disconnect the power from the computer may result
in personal injury.

REPLACING THE SYSTEM BOARD 5
I. Disconnecting the Power
1. Turn off the computer using the Power button
(see Figure 1-2).
Figure 1-2
2. Disconnect the power cord from the electrical outlet 1
and from the computer 2(see Figure 1-3).
Failure to disconnect the power from the computer may
result in personal injury.
Figure 1-3

6REPLACING THE SYSTEM BOARD
You do not have to replace the
screw securing the side access
panel. The screw securing the
side panel is used for shipping
purposes only.
II. Opening the Side Access Panel
1. Remove the screw 1securing the side access panel.
Locate the latch 2directly below the screw, press it down,
and hold the latch in the down position (see Figure 2-1).
Figure 2-1
Important: Some models may not have a screw 1. This screw is used
for shipping purposes only.
2. Grab the handle and slide the side panel from the chassis
(see Figure 2-2).
▲Caution: Before doing any work inside your computer, ground
yourself by touching a metal part of the chassis.
Figure 2-2

REPLACING THE SYSTEM BOARD 7
III. Locating the System Board
Turn the computer on its side (open side facing up) and locate
the system board (see Figure 3-1).
Figure 3-1
Important: The location of the system board components may vary
slightly by model.

8REPLACING THE SYSTEM BOARD
IV. Removing the Data Cables from the System
Board
Disconnect the diskette drive 1, hard drive 2, and
CD-ROM 3, CD-RW 3, and/or DVD drive 3data cables
from the system board (see Figure 4-1).
Figure 4-1

REPLACING THE SYSTEM BOARD 9
V. Removing the Memory Module
To remove the memory module, complete the following
procedure:
1. With the computer on its side (open side facing up), locate
the memory module 2(see Figure 5-1).
2. Press outward on the release latches found at each end of
the memory slot 1. Lift the memory module 2from the
memory slot 1(see Figure 5-1). The number of memory
modules may vary depending upon your system’s
configuration.
Figure 5-1

10 REPLACING THE SYSTEM BOARD
VI. Locating the Microprocessor/Heatsink Assembly
See the illustration below for the location of the heatsink lock
tabs 1, heatsink power supply fan cable 2, heatsink 3,
microprocessor interface 4(see Figure 6-1).
Figure 6-1
Important: The location of the microprocessor/heatsink assembly may
vary slightly by model.

REPLACING THE SYSTEM BOARD 11
VII. Removing the Microprocessor/Heatsink
Assembly
To remove the microprocessor/heatsink assembly, complete
the following procedure:
1. With the computer on its side (open side facing up), locate
the microprocessor (see Figure 7-1).
2. Disconnect the heatsink power supply fan cable 1
(see Figure 7-1).
3. Pull forward on the heatsink lock tabs 2(located at the
base) to release the processor.
Figure 7-1
The microprocessor may still be hot if the computer was recently used.
Allow the microprocessor to cool before removing.

12 REPLACING THE SYSTEM BOARD
4. Push in the release tabs 1on the end of the processor and
lift the processor 2from the chassis (see Figure 7-2).
Figure 7-2

REPLACING THE SYSTEM BOARD 13
VIII. Identifying and Locating Different
Expansion Cards
The Expansion Card Chart below shows various types
of expansion cards. This chart will help you to identify the
different types of expansion cards such as a modem 1and a
Network Interface Card (NIC) 2that can be added to your
computer (see Figure 8-1).
Figure 8-1 (rear view of chassis)
Important: These expansion cards may fit into any available PCI slot. The
number of PCI slots may vary by model.

14 REPLACING THE SYSTEM BOARD
IX. Removing the Expansion Card
1. With the computer on its side (open side facing up), locate
the expansion card(s) (see Figure 9-1).
2. Remove the screw 1securing the expansion card
(see Figure 9-1).
Important: Keep the screw 1that secured the card to the chassis. You
will need it when replacing the card.
3. Using a gentle rocking motion, pull the expansion card
from the PCI slot 2on the system board (see Figure 9-1).
Figure 9-1

REPLACING THE SYSTEM BOARD 15
X. Removing the Sound Card
1. With the computer on its side (open side facing up), locate
the sound card (see Figure 10-1).
2. Remove the audio cable that is connected to the sound card
(see Figure 10-1).
Figure 10-1
Important: The number of audio cables may vary depending on your
computer’s configuration.

16 REPLACING THE SYSTEM BOARD
3. Remove the screw 1securing the sound card
(see Figure 10-2).
Important: Keep the screw 1that secured the card to the chassis. You
will need it when replacing the card.
4. Using a gentle rocking motion, pull the sound card from
the PCI slot 2on the system board (see Figure 10-2).
Figure 10-2

REPLACING THE SYSTEM BOARD 17
XI. Locating The Graphics Card
See the illustration for the location of the graphics card 1
and the AGP slot 2on the system board (see Figure 11-1).
Figure 11-1
Important: The location of the AGP slot may vary slightly by model. The
AGP slot is the first in a series of slots on the system board and is usually
the slot located closest to the microprocessor/heatsink assembly.
Some units may not include an
AGP slot or a graphics card.
If your unit does not include
these components, you can
skip Step XII - Removing the
Graphics Card and Step VII -
Replacing the Graphics Card.

18 REPLACING THE SYSTEM BOARD
XII. Removing the Graphics Card
To remove the graphics card, complete the following
procedure:
1. With the computer on its side (open side facing up), locate
the graphics card (see Figure 12-1).
2. Remove the screw 1securing the graphics card
(see Figure 12-1). Keep the screw 1that secured the card
to the chassis. You will need it when replacing the card.
3. Using a gentle rocking motion, pull the graphics card
from the AGP slot 2on the system board
(see Figure 12-1).
Figure 12-1

REPLACING THE SYSTEM BOARD 19
XIII. Disconnecting the Power Supply, Front I/O
(USB), and Power Button Cables
1. Push the power supply cable clip 1inward and pull the
power supply cable from the connector 2on the system
board (see Figure 13-1).
Figure 13-1

20 REPLACING THE SYSTEM BOARD
2. Disconnect the Front I/O (USB) cable from the system
board (see Figure 13-2).
Figure 13-2