HP d325 Series Operating and maintenance manual

Hardware Reference Guide
HP Business Desktop
d325 Microtower Model
Document Part Number: 312946-001
February 2003
This guide provides basic information for upgrading this computer
model.

© 2002 Hewlett-Packard Company
© 2002 Hewlett-Packard Development Company, L.P.
HP, Hewlett Packard, and the Hewlett-Packard logo are trademarks of
Hewlett-Packard Company in the U.S. and other countries.
Compaq and the Compaq logo are trademarks of Hewlett-Packard Development
Company, L.P. in the U.S. and other countries.
Microsoft and Windows are trademarks of Microsoft Corporation in the U.S.
and other countries.
All other product names mentioned herein may be trademarks of their respective
companies.
Hewlett-Packard Company shall not be liable for technical or editorial errors or
omissions contained herein or for incidental or consequential damages in
connection with the furnishing, performance, or use of this material. The
information in this document is provided “as is” without warranty of any kind,
including, but not limited to, the implied warranties of merchantability and
fitness for a particular purpose, and is subject to change without notice. The
warranties for HP products are set forth in the express limited warranty
statements accompanying such products. Nothing herein should be construed as
constituting an additional warranty.
This document contains proprietary information that is protected by copyright.
No part of this document may be photocopied, reproduced, or translated to
another language without the prior written consent of Hewlett-Packard
Company.
ÅWARNING: Text set off in this manner indicates that failure to follow
directions could result in bodily harm or loss of life.
ÄCAUTION: Text set off in this manner indicates that failure to follow
directions could result in damage to equipment or loss of information.
Hardware Reference Guide
HP Business Desktop
d325 Microtower Model
First Edition (February 2003)
Document Part Number: 312946-001

Hardware Reference Guide www.hp.com iii
Contents
1 Product Features
Standard Configuration Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
Front Panel Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Rear Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
Easy Access Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
Customizing the Easy Access Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Windows Logo Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Special Mouse Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
2 Hardware Upgrades
Serviceability Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Installation Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Removing the Computer Access Panel and Front Bezel. . . . . . . . . . . . . . . . . . . . . . . . 2–3
Installing Additional Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
DDR-SDRAM DIMMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
Replacing or Upgrading a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
Locating Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
Removing a Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
Replacing a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–13
Removing or Installing an Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–17
Reassembling the Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–22
A Specifications

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Contents
B Hard Drive Installation Guidelines
Using the Cable-Select Feature with Ultra ATA Devices. . . . . . . . . . . . . . . . . . . . . . . B–1
Guidelines for Installing Ultra ATA Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–1
C Battery Replacement
D Security Lock Provisions
Installing a Security Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
E Electrostatic Discharge
Preventing Electrostatic Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–1
Grounding Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–1
F Routine Computer Care and Shipping Preparation
Routine Computer Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–1
Optical Drive Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–2
Shipping Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F–3
Index

Hardware Reference Guide www.hp.com 1–1
1
Product Features
Standard Configuration Features
The Compaq Microtower features may vary depending on the model.
For a complete listing of the hardware and software installed in the
computer, run the Diagnostics for Windows utility. Instructions for
using this utility are provided in the Troubleshooting Guide on the
Documentation Library CD.
Microtower Configuration

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Product Features
Front Panel Components
Front Panel Components
1Optical Drives (CD-ROM, CD-R/RW,
DVD-ROM, DVD-R/RW, or CD-RW/DVD
Combo Drive)
7Optical Drive Eject Buttons
2Optical Drive Activity Lights 8Power Button
3Diskette Drive (optional) 9Power On Light
4Diskette Drive Activity Light -Hard Drive Activity Light
5Diskette Eject Button qHeadphone Jack
6USB (Universal Serial Bus) Ports wMicrophone Connector

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Product Features
Rear Panel Components
Rear Panel Components
1Power Cord Connector 7nRJ-45 Connector
2Voltage Select Switch 8lParallel Connector
3bPS/2 Mouse Connector 9cMonitor Connector
4aPS/2 Keyboard Connector -hHeadphone/Line-Out Connector
5oUniversal Serial Bus (USB) qjLine-In Audio Connector
6mSerial Connector wgMicrophone Connector
✎Arrangement and number of connectors may vary by model.
The monitor connector on the system board is inactive if an AGP expansion card is installed in
the computer. The monitor must be connected to the monitor connector on the installed AGP
card for proper operation. If the monitor is not connected to the correct connector, it will not
function properly.

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Product Features
Easy Access Keyboard
Easy Access Keyboard Components
1Function Keys Perform special functions depending on the software application
being used.
2Easy Access Buttons Provide quick access to specific Internet destinations.
3Editing Keys Includes the following: Insert, Home, Page Up, Delete, End, and
Page Down.
4Status Lights Indicate the status of the computer and keyboard settings
(Num Lock, Caps Lock, and Scroll Lock).
5Numeric Keys Work like a calculator keypad.
6Arrow Keys Used to navigate through a document or Web site. These keys
allow you to move left, right, up, and down, using the keyboard
instead of the mouse.
7Application Key* Used (like the right mouse button) to open pop-up menus in a
Microsoft Office application. May perform other functions in other
software applications.
8Windows Logo Key* Used to open the Start menu in Microsoft Windows. Used in
combination with other keys to perform other functions.
9Ctrl Key Used in combination with another key; its effect depends on the
application software you are using.
*Keys available in select geographic regions.

Hardware Reference Guide www.hp.com 1–5
Product Features
Customizing the Easy Access Buttons
All Easy Access buttons can be reprogrammed to open any software
application or data file on the hard drive, or any Internet address.
To reprogram the Easy Access buttons, complete the following steps:
1. Double-click the keyboard icon in the notification area (lower
right corner) of the Windows taskbar. The Keyboard Properties
dialog box is displayed.
2. Click the Help button on the Keyboard Properties dialog box for
instructions.
Windows Logo Key
Use the Windows Logo key in combination with other keys to
perform certain functions available in the Windows operating system.
Refer to the “Easy Access Keyboard” section to identify the Windows
Logo key.
Windows Logo Key Functions
Windows Logo Key Displays or hides the Start menu.
Windows Logo Key + dDisplays the Desktop.
Windows Logo Key + mMinimizes all open applications.
Shift + Windows Logo Key + m Undoes Minimize All.
Windows Logo Key + eLaunches My Computer.
Windows Logo Key + fLaunches Find Document.
Windows Logo Key + Ctrl + f Launches Find Computer.
Windows Logo Key + F1 Launches Windows Help.
Windows Logo Key + lLocks the computer if you are connected to a
network domain, or allows you to switch users if you
are not connected to a network domain.
Windows Logo Key + rLaunches the Run dialog box.
Windows Logo Key + uLaunches the Utility Manager.
Windows Logo Key + Tab Activates the next Taskbar button.

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Product Features
Special Mouse Functions
Most software applications support the use of a mouse. The functions
assigned to each mouse button depend on the software applications
you are using.
Serial Number Location
Each computer has a unique serial number that is located on the
top cover of the computer. Keep this number available for use when
contacting Compaq customer service for assistance.
Serial Number Location

Hardware Reference Guide www.hp.com 2–1
2
Hardware Upgrades
Serviceability Features
The Microtower computer includes features that make it easy to
upgrade and service.
Installation Sequence
It is very important that you follow this sequence of steps to ensure
the proper installation of any optional equipment. For more
information about Computer Setup, refer to the Computer Setup
(F10) Utility Guide. If the computer is powered on, turn it off and
disconnect the power cord from the wall outlet.
ÅWARNING: To reduce the risk of personal injury from electrical shock
and/or hot surfaces, be sure to disconnect the power cord from the wall
outlet, and allow the internal system components to cool before touching.
ÅWARNING: To reduce the risk of electrical shock, fire, or damage to the
equipment, do not plug telecommunications/telephone connectors into the
network interface controller (NIC) receptacles.
ÄCAUTION: Static electricity can damage the electronic components of
the computer or optional equipment. Before beginning these procedures,
ensure that you are discharged of static electricity by briefly touching a
grounded metal object. Refer to Appendix E, “Electrostatic Discharge” in
this guide for additional information on preventing electrostatic discharge.

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Hardware Upgrades
1. Open the computer by removing the access panel. See the
procedure in “Removing the Computer Access Panel and
Front Bezel” for details.
2. Install any optional equipment. See the applicable sections of this
guide or the documentation provided with the optional equipment
for instructions.
3. Replace the computer access panel.
4. Turn on the monitor, computer, and any devices you want to test.
5. Reconfigure the computer, if necessary. Refer to the
Computer Setup (F10) Utility Guide on the Documentation
Library CD for instructions about using Computer Setup.
6. If you normally lock the Smart Cover Lock, use Computer Setup
to relock the lock and enable the Smart Cover Sensor. Refer to the
Desktop Management Guide on the Documentation Library CD
for more information about the Smart Cover Lock and Smart
Cover Sensor.

Hardware Reference Guide www.hp.com 2–3
Hardware Upgrades
Removing the Computer Access Panel and
Front Bezel
To remove the computer access panel:
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock. Refer to the Desktop Management Guide on the
Documentation Library CD for more information about the Smart
Cover Lock.
2. Shut down the operating system properly, then power off the
computer and any external devices.
3. Disconnect the power cord from the power outlet 1and the
computer 2, and disconnect any external devices.
Disconnecting the Power Cable
ÄCAUTION: Before removing the computer access panel, ensure that the
computer is turned off and that the power cord is disconnected from the
electrical outlet.

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Hardware Upgrades
4. Loosen the captive thumbscrew 1that secures the access panel to
the computer chassis.
5. Slide the access panel 2back about 1 inch (2.5 cm), then lift it
off the unit.
✎You may want to lay the computer on its side to install internal parts.
Be sure the side with the access panel and pull grip is facing up.
Removing the Computer Access Panel

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Hardware Upgrades
6. To remove the front bezel, press down on all three tabs on the
left side of the bezel 1then rotate the bezel off the chassis 2,
beginning with the left side then the right side.
Removing the Front Bezel

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Hardware Upgrades
Installing Additional Memory
The computer comes with Double Data Rate-Synchronous Dynamic
Random Access Memory (DDR-SDRAM) Dual Inline Memory
Modules (DIMMs).
DIMMs
The memory sockets on the system board can be populated with
industry-standard DIMMs. These memory module slots are populated
with at least one preinstalled memory module. To achieve the
maximum memory support, you may be required to replace the
preinstalled DIMM with a higher capacity DIMM.
If you are adding a second DIMM, it is recommended that you add a
DIMM identical to the preinstalled DIMM in order to achieve a
higher performing dual channel mode. The system board must be
populated with DIMMs of identical type and speed for the system to
operate in dual channel mode.
DDR-SDRAM DIMMs
For proper system operation, if the system supports DDR-SDRAM
DIMMs, the DIMMs must be industry-standard 168-pin, unbuffered
PC 1600 200 MHz- or PC 2100 266 MHz-compliant CAS Latency 2
or 2.5 (CL = 2 or CL = 2.5), or PC 2700 333 MHz-compliant CAS
Latency 2.5 (CL = 2.5) 2.5 volt DDR-SDRAM DIMMs. They must
also contain the mandatory Joint Electronic Device Engineering
Council (JEDEC) Serial Presence Detect (SPD) information. DIMMs
constructed with x4 SDRAM are not supported; the system will not
start using unsupported DIMMs.

Hardware Reference Guide www.hp.com 2–7
Hardware Upgrades
Installing DDR-SDRAM DIMMs
ÄCAUTION: The memory module sockets have gold metal contacts. When
upgrading the memory, it is important to use memory modules with gold
metal contacts to prevent corrosion and/or oxidation resulting from having
incompatible metals in contact with each other.
ÄCAUTION: Static electricity can damage the electronic components of
the computer or optional cards. Before beginning these procedures,
ensure that you are discharged of static electricity by briefly touching a
grounded metal object. Refer to Appendix E, “Electrostatic Discharge” for
more information.
ÄCAUTION: When handling a memory module, be careful not to touch
any of the contacts. Doing so may damage the module.
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock.
2. Shut down the operating system properly, then power off the
computer and any external devices.
3. Disconnect the power cord from the power outlet.
4. Remove the computer access panel and locate the memory
module sockets.
ÅWARNING: To reduce risk of personal injury from hot surfaces, allow
the internal system components to cool before touching.

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Hardware Upgrades
5. Open both latches of the memory module socket 1, and insert the
memory module into the socket 2. Begin by installing a module
into the socket nearest the preinstalled module, and install the
modules following the numerical order of the sockets.
Installing a DIMM
✎A memory module can be installed in only one way. Match the notch
on the module with the tab on the memory socket.
6. Push the module down into the socket, ensuring that the module
is fully inserted and properly seated. Make sure the latches are in
the closed position 3.
7. Repeat steps 4 and 5 for any additional modules that you want to
install.
8. Complete the procedure described in the “Reassembling the
Computer” section of this chapter.

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Hardware Upgrades
Replacing or Upgrading a Drive
The computer supports up to six drives that may be installed in
various configurations.
This section describes the procedure for replacing or upgrading the
storage drives. A Torx screwdriver is needed to replace the guide
screws on a drive.
ÄCAUTION: Make sure you back up your personal files on the hard drive
to an external storage device, such as a CD, before removing the hard
drive. Failure to do so will result in data loss. After replacing the primary
hard drive, you will need to run the Restore Plus! CD to load the Compaq
factory-installed files.
Locating Drive Positions
1Optical drive* 4Bay for optional 3.5” drive
2Second optical drive 5Hard drive
3Diskette drive (optional) 6Optional hard drive
*An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DVD-R/RW,
or CD-RW/DVD Combo drive.

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Hardware Upgrades
Removing a Drive
1. If you have locked the Smart Cover Lock, use Computer Setup to
unlock the lock.
2. Shut down the operating system properly, then power off the
computer, disconnect the power cord from the power outlet, and
remove the access panel.
3. Remove the front bezel.
4. Disconnect the power and data cables from the back of the drive,
as indicated in the following illustrations.
Disconnecting the Optical Drive Cables