HP dx7500 - Microtower PC Operating and maintenance manual

Hardware Reference Guide - dx7500 Small
Form Factor Model
HP Compaq Business PC

© Copyright 2008 Hewlett-Packard
Development Company, L.P. The
information contained herein is subject to
change without notice.
Microsoft, Windows, and Windows Vista are
either trademarks or registered trademarks
of Microsoft Corporation in the United States
and/or other countries.
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services are set forth in the express warranty
statements accompanying such products
and services. Nothing herein should be
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or editorial errors or omissions contained
herein.
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.
Hardware Reference Guide
HP Compaq Business PC
dx7500 Small Form Factor Model
First Edition (August 2008)
Document Part Number: 498186-001

About This Book
This guide provides basic information for upgrading this computer model.
WARNING! Text set off in this manner indicates that failure to follow directions could result in bodily
harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage
to equipment or loss of information.
NOTE: Text set off in this manner provides important supplemental information.
ENWW iii

iv About This Book ENWW

Table of contents
1 Product Features
Standard Configuration Features ......................................................................................................... 1
Serviceability Features ......................................................................................................................... 1
Front Panel Components ..................................................................................................................... 2
Media Card Reader Components ......................................................................................................... 3
Rear Panel Components ...................................................................................................................... 4
Keyboard .............................................................................................................................................. 5
Using the Windows Logo Key .............................................................................................. 5
Serial Number Location ........................................................................................................................ 7
2 Hardware Upgrades
Warnings and Cautions ........................................................................................................................ 8
Removing the Computer Access Panel ................................................................................................ 9
Replacing the Computer Access Panel ................................................................................................ 9
Removing the Front Bezel .................................................................................................................. 10
Removing a Bezel Blank .................................................................................................................... 11
Replacing the Front Bezel .................................................................................................................. 12
Installing Additional Memory .............................................................................................................. 13
DIMMs ............................................................................................................................... 13
DDR2-SDRAM DIMMs ...................................................................................................... 13
Populating DIMM Sockets ................................................................................................. 14
Installing DIMMs ................................................................................................................ 15
Removing or Installing an Expansion Card ........................................................................................ 19
Drive Positions ................................................................................................................................... 24
Installing Additional Drives ................................................................................................................. 25
System Board Drive Connections ...................................................................................... 26
Removing an Optical Drive ................................................................................................ 27
Installing an Optical Drive into the 5.25-inch Drive Bay ..................................................... 28
Removing an External 3.5-inch Drive ................................................................................ 31
Installing a Drive into the 3.5-inch External Drive Bay ....................................................... 34
Removing an Internal 3.5-inch Hard Drive ......................................................................... 36
Installing an Internal 3.5-inch Hard Drive ........................................................................... 38
Appendix A Specifications
ENWW v

Appendix B Battery Replacement
Appendix C External Security Devices
Installing a Security Lock .................................................................................................................... 45
Cable Lock ......................................................................................................................... 45
Padlock .............................................................................................................................. 46
HP Business PC Security Lock .......................................................................................... 46
Appendix D Electrostatic Discharge
Preventing Electrostatic Damage ....................................................................................................... 49
Grounding Methods ............................................................................................................................ 49
Appendix E Computer Operating Guidelines, Routine Care and Shipping Preparation
Computer Operating Guidelines and Routine Care ............................................................................ 50
Optical Drive Precautions ................................................................................................................... 51
Operation ........................................................................................................................... 51
Cleaning ............................................................................................................................. 51
Safety ................................................................................................................................. 51
Shipping Preparation .......................................................................................................................... 51
Index ................................................................................................................................................................... 52
vi ENWW

1 Product Features
Standard Configuration Features
The HP Compaq Small Form Factor features may vary depending on the model. For a complete listing
of the hardware and software installed in the computer, run the diagnostic utility (included on some
computer models only). Instructions for using the utility are provided in the Troubleshooting Guide.
Figure 1-1 HP Compaq dx7500 Small Form Factor
NOTE: The drive configuration shown above may be different than your computer model.
The illustration shown above may look different than your computer model.
Serviceability Features
The Small Form Factor computer includes features that make it easy to upgrade and service. A Torx
T-15 or flat blade screwdriver is needed for many of the installation procedures described in this chapter.
ENWW Standard Configuration Features 1

Front Panel Components
Drive configuration may vary by model.
Figure 1-2 Front Panel Components
Table 1-1 Front Panel Components
13.5-inch Media Card Reader (optional)
1
6USB (Universal Serial Bus) 2.0 Ports
25.25-inch Optical Drive (optional)
2
7Headphone Connector
3Optical Drive Activity Light 8Microphone Connector
4Hard Drive Activity Light 9Power On Light
5 Optical Drive Eject Button 10 Dual-State Power Button
1Some models have a bezel blank covering the 3.5-inch drive bay. An optional diskette drive is available from HP for this drive
bay.
2Some models have a bezel blank covering the 5.25-inch drive bay.
2 Chapter 1 Product Features ENWW

Media Card Reader Components
The media card reader is an optional device available on some models only. Refer to the following
illustration and table to identify the media card reader components.
Figure 1-3 Media Card Reader Components
Table 1-2 Media Card Reader Components
No. Slot Media
1xD ●xD-Picture Card (xD)
2MicroSD ●MicroSD (T-Flash) ●MicroSDHC
3Media Card Reader
Activity Light
4SD/MMC+/miniSD ●Secure Digital (SD)
●Secure Digital High
Capacity (SDHC)
●MiniSD
●MiniSDHC
●MultiMediaCard
(MMC)
●Reduced Size
MultiMediaCard (RS
MMC)
●MultiMediaCard 4.0
(MMC Plus)
●Reduced Size
MultiMediaCard 4.0
(MMC Mobile)
●MMC Micro (adapter
required)
5USB ●USB (Universal Serial
Bus) Port
6CompactFlash I/II ●CompactFlash Card
Type 1
●CompactFlash Card
Type 2
●MicroDrive
7MS PRO/MS PRO DUO ●Memory Stick (MS)
●MagicGate Memory
Stick (MG)
●MagicGate Memory
Duo
●Memory Stick Select
●Memory Stick Duo
(MS Duo)
●Memory Stick PRO
(MS PRO)
●Memory Stick PRO
Duo (MS PRO Duo)
●Memory Stick PRO-
HG Duo
●Memory Stick Micro
(M2) (adapter
required)
ENWW Media Card Reader Components 3

Rear Panel Components
Figure 1-4 Rear Panel Components
Table 1-3 Rear Panel Components
1PS/2 Mouse Connector (green) 8PS/2 Keyboard Connector (purple)
2Digital Line-Out Audio (orange) 9Digital Line-In Audio (black)
3VGA Monitor Connector (blue) 10 DVI Monitor Connector (white)
41394 Port 11 Universal Serial Bus (USB) Ports
5RJ-45 Network Connector 12 Microphone Connector (pink)
6Line-In Audio Connector (blue) 13 Line-Out Connector for powered audio
devices (green)
7Power Cord Connector 14 Voltage Select Switch
NOTE: Arrangement and number of connectors may vary by model.
The monitor connector on the system board is inactive when a PCI Express x16 graphics card is installed
in the computer.
If a PCI Express x1 graphics card is installed, the connectors on the card and the system board may be
used at the same time. Some settings may need to be changed in Computer Setup to use both
connectors. For information about setting the boot VGA controller, refer to the Computer Setup (F10)
Utility Guide.
4 Chapter 1 Product Features ENWW

Keyboard
Figure 1-5 Keyboard Components
Table 1-4 Keyboard Components
1Function Keys Perform special functions depending on the software application being used.
2Editing Keys Include the following: Insert, Home, Page Up, Delete, End, and Page Down.
3Status Lights Indicate the status of the computer and keyboard settings (Num Lock, Caps Lock,
and Scroll Lock).
4Numeric Keys Work like a calculator keypad.
5Arrow 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.
6Ctrl Keys Used in combination with another key; their effect depends on the application
software you are using.
7Application Key
1
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 Keys
1
Used to open the Start menu in Microsoft Windows. Used in combination with other
keys to perform other functions.
9 Alt Keys Used in combination with another key; their effect depends on the application
software you are using.
1Keys available in select geographic regions.
Using the 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 Keyboard on page 5to identify the Windows Logo key.
Table 1-5 Windows Logo Key Functions
The following Windows Logo Key functions are available in Microsoft Windows XP and Microsoft Windows Vista.
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 + mUndoes Minimize All
Windows Logo Key + eLaunches My Computer
ENWW Keyboard 5

Windows Logo Key + fLaunches Find Document
Windows Logo Key + Ctrl + fLaunches 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 + Pause/Break Launches the System Properties dialog box
Windows Logo Key + Tab Windows XP - Cycles through the Taskbar buttons
Windows Vista - Cycles through programs on the Taskbar using
the Windows Flip 3-D
In addition to the Windows Logo Key functions described above, the following functions are also available in Microsoft
Windows Vista.
Ctrl + Windows Logo Key + Tab Use the arrow keys to cycle through programs on the Taskbar by
using Windows Flip 3-D
Windows Logo Key + Spacebar Brings all gadgets to the front and select Windows Sidebar
Windows Logo Key + gCycles through Sidebar gadgets
Windows Logo Key + uLaunches Ease of Access Center
Windows Logo Key + xLaunches Windows Mobility Center
Windows Logo Key + any number key Launches the Quick Launch shortcut that is in the position that
corresponds to the number (for example, Windows Logo Key + 1
launches the first shortcut in the Quick Launch menu)
Table 1-5 Windows Logo Key Functions (continued)
6 Chapter 1 Product Features ENWW

Serial Number Location
Each computer has a unique serial number and product ID number that are located on the upper right
side of the computer. Keep these numbers available for use when contacting customer service for
assistance.
Figure 1-6 Serial Number and Product ID Location
ENWW Serial Number Location 7

2 Hardware Upgrades
Warnings and Cautions
Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and
warnings in this guide.
WARNING! To reduce the risk of personal injury from electrical shock, hot surfaces, or fire:
Disconnect the power cord from the wall outlet and allow the internal system components to cool before
touching.
Do not plug telecommunications or telephone connectors into the network interface controller (NIC)
receptacles.
Do not disable the power cord grounding plug. The grounding plug is an important safety feature.
Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.
To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes proper workstation,
setup, posture, and health and work habits for computer users, and provides important electrical and
mechanical safety information. This guide is located on the Web at http://www.hp.com/ergo.
CAUTION: Static electricity can damage the electrical 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. See Appendix D, Electrostatic Discharge on page 49 for
more information.
When the computer is plugged into an AC power source, voltage is always applied to the system board.
You must disconnect the power cord from the power source before opening the computer to prevent
damage to internal components.
8 Chapter 2 Hardware Upgrades ENWW

Removing the Computer Access Panel
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as diskettes or compact discs, from the computer.
3. Turn off the computer properly through the operating system, then turn off any external devices.
4. Disconnect the power cord from the power outlet and the computer (1), and disconnect any external
devices.
CAUTION: Regardless of the power-on state, voltage is always present on the system board as
long as the system is plugged into an active AC outlet. You must disconnect the power cord to
avoid damage to the internal components of the computer.
5. Remove the two screws that secure the access panel to the computer chassis (2).
6. Slide the access panel back about 1.3 cm (1/2 inch), then lift it away from and off the unit (3).
Figure 2-1 Removing the Power Cord and Access Panel
Replacing the Computer Access Panel
Place the access panel on the chassis with about 1.3 cm (1/2 inch) of the panel hanging off the back of
the chassis and slide it into place (1). Replace the two screws that secure the access panel to the chassis
(2).
Figure 2-2 Replacing the Access Panel
ENWW Removing the Computer Access Panel 9

Removing the Front Bezel
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as diskettes or compact discs, from the computer.
3. Turn off the computer properly through the operating system, then turn off any external devices.
4. Disconnect the power cord from the power outlet and disconnect any external devices.
CAUTION: Regardless of the power-on state, voltage is always present on the system board as
long as the system is plugged into an active AC outlet. You must disconnect the power cord to
avoid damage to the internal components of the computer.
5. Remove the computer access panel.
6. To remove the front bezel, pull up on each of the three tabs on the top of the bezel (1) to release
them, then rotate the bezel down and off the chassis (2).
Figure 2-3 Removing the Front Bezel
10 Chapter 2 Hardware Upgrades ENWW

Removing a Bezel Blank
If the computer was not shipped with a drive in the 3.5" or 5.25" option bay, the bay will be covered by
a bezel blank. If you add a drive to the option bay, you must first remove the bezel blank.
1. Follow the instructions described in Removing the Front Bezel on page 10.
2. While facing the inside of the front bezel, press the two retaining tabs on the right towards the outer
edge of the bezel (1) and pull the bezel blank inwards to remove it (2).
Figure 2-4 Removing a Bezel Blank
ENWW Removing a Bezel Blank 11

Replacing the Front Bezel
To replace the front bezel, insert the three hooks on the bottom of the bezel into the rectangular holes
on the chassis (1) then rotate the bezel into place so that the catches on the three tabs on the top of
the bezel snap into place on the chassis (2).
Figure 2-5 Replacing the Front Bezel
12 Chapter 2 Hardware Upgrades ENWW

Installing Additional Memory
The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2-
SDRAM) dual inline memory modules (DIMMs).
DIMMs
The memory sockets on the system board can be populated with up to four industry-standard DIMMs.
These memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum
memory support, you can populate the system board with up to 8-GB of memory configured in a high-
performing dual channel mode.
DDR2-SDRAM DIMMs
For proper system operation, the DDR2-SDRAM DIMMs must be:
●industry-standard 240-pin
●unbuffered PC2-6400 800 MHz-compliant
●1.8 volt DDR2-SDRAM DIMMs
The DDR2-SDRAM DIMMs must also:
●support CAS latency 5 DDR2 800 Mhz (5-5-5 timing) and CAS latency 6 DDR2 800 Mhz (6-6-6
timing)
●contain the mandatory JEDEC SPD information
In addition, the computer supports:
●512Mbit, 1Gbit, and 2Gbit non-ECC memory technologies
●single-sided and double-sided DIMMs
●DIMMs constructed with x8 and x16 DDR devices; DIMMs constructed with x4 SDRAM are not
supported
NOTE: The system will not operate properly if you install unsupported DIMMs.
ENWW Installing Additional Memory 13

Populating DIMM Sockets
There are four DIMM sockets on the system board, with two sockets per channel. The sockets are
labeled DIMM1, DIMM2, DIMM3, and DIMM4. Sockets DIMM1 and DIMM2 operate in memory channel
A. Sockets DIMM3 and DIMM4 operate in memory channel B.
Figure 2-6 DIMM Socket Locations
Table 2-1 DIMM Socket Locations
Item Description Socket Color
1DIMM1 socket, Channel A (populate
first)
Blue
2DIMM2 socket, Channel A Black
3DIMM3 socket, Channel B (populate
second)
Blue
4DIMM4 socket, Channel B Black
NOTE: A DIMM must occupy the DIMM1 socket.
The system will automatically operate in single channel mode, dual channel mode, or flex mode,
depending on how the DIMMs are installed.
●The system will operate in single channel mode if the DIMM sockets are populated in one channel
only.
●The system will operate in a higher-performing dual channel mode if the total memory capacity of
the DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B. The
technology and device width can vary between the channels. For example, if Channel A is
populated with two 512MB DIMMs and Channel B is populated with one 1GB DIMM, the system
will operate in dual channel mode.
●The system will operate in flex mode if the total memory capacity of the DIMMs in Channel A is not
equal to the total memory capacity of the DIMMs in Channel B. In flex mode, the channel populated
14 Chapter 2 Hardware Upgrades ENWW