HP Compaq dx6050 MT Operating and maintenance manual

Hardware Reference Guide
HP Business Desktop
dx6050 Microtower Model
Document Part Number: 362000-001
May 2004
This guide provides detailed information on the features and use of
the HP dx6050 Microtower, and includes instructions for removing
and replacing internal components.

© Copyright 2004 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
Microsoft and Windows are trademarks of Microsoft Corporation in the U.S.
and other countries.
The only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. Nothing herein
should be construed as constituting an additional warranty. HP shall not be
liable for technical 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.
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
dx6050 Microtower Model
First Edition (May 2004)
Document Part Number: 362000-001

Hardware Reference Guide www.hp.com iii
Contents
1 Product Features
Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
Front Panel Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Rear Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
Keyboards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
Standard Keyboard Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
Easy Access Keyboard Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Customizing the Easy Access Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Windows Logo Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7
2 Hardware Upgrades
Serviceability Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Installation Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Unlocking the Smart Cover Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Using the Smart Cover FailSafe Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Removing the Computer Access Panel and Front Bezel. . . . . . . . . . . . . . . . . . . . . . . . 2–5
Reassembling the Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–8
Installing Additional Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
DDR-SDRAM DIMMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
Replacing or Upgrading a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–16
Locating Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–17
Removing a Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–18
Replacing a Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–20
Removing or Installing an Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–25

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Contents
A Specifications
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 Provisions
Cable Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
Padlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–2
Universal Chassis Clamp Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–3
Without Security Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–3
With Security Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–5
Port Security Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–7
Installing the Port Security Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–7
Removing the Port Security Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–10
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 Features
Features of the HP dx6050 Business Desktop, Microtower model,
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.
HP dx6050 Microtower

1–2 www.hp.com Hardware Reference Guide
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

Hardware Reference Guide www.hp.com 1–3
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 (2)
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.
When an AGP expansion card is installed in the computer, the monitor connector on the
system board is inactive unless the default setting is changed in the BIOS. 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.

1–4 www.hp.com Hardware Reference Guide
Product Features
Keyboards
Keyboard availability varies by region.
Standard Keyboard Components
1Function Keys Perform special functions depending on the software application
being used.
2Editing Keys Includes 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; its effect depends on the
application software you are using.
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
Keys*
Used to open the Start menu in Microsoft Windows. Used in
combination with other keys to perform other functions.
9Alt Keys 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
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.
7Ctrl Keys Used in combination with another key; its effect depends on the
application software you are using.
8Application 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.
9Windows Logo
Keys*
Used to open the Start menu in Microsoft Windows. Used in
combination with other keys to perform other functions.
-Alt Keys Used in combination with another key; its effect depends on the
application software you are using.
*Keys available in select geographic regions.

1–6 www.hp.com Hardware Reference Guide
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 “Standard Keyboard Components” or “Easy Access
Keyboard Components” 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.

Hardware Reference Guide www.hp.com 1–7
Product Features
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 HP customer service for assistance.
Serial Number Location

Hardware Reference Guide www.hp.com 2–1
2
Hardware Upgrades
Serviceability Features
The HP dx6050 Microtower 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.
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.

2–2 www.hp.com Hardware Reference Guide
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.
Unlocking the Smart Cover Lock
✎The Smart Cover Lock is an optional feature and is available on select
models only.
The Smart Cover Lock is a software-controllable cover lock,
controlled by the setup password. This lock prevents unauthorized
access to the internal components. The computer ships with the Smart
Cover Lock in the unlocked position. For more information about
locking the Smart Cover Lock, refer to the Desktop Management
guide.
Using the Smart Cover FailSafe Key
If you enable the Smart Cover Lock and cannot enter your password
to disable the lock, you will need a Smart Cover FailSafe Key to open
the computer cover. You will need the key in any of the following
circumstances:
■Power outage
■Startup failure

Hardware Reference Guide www.hp.com 2–3
Hardware Upgrades
■PC component (for example, processor or power supply) failure
■Forgotten password
ÄCAUTION: The Smart Cover FailSafe Key is a specialized tool available
from HP. Be prepared; order this key before you need one.
To obtain a FailSafe Key:
■Contact an authorized HP reseller or service provider. Order
PN 166527-001 for the wrench-style key or PN 166527-002 for
the screwdriver bit key.
■Refer to the HP Web site (www.hp.com) for ordering
information.
■Call the appropriate number listed in the warranty.

2–4 www.hp.com Hardware Reference Guide
Hardware Upgrades
To open the computer cover using the FailSafe Key:
1. Turn off the computer and any external devices.
2. Disconnect the power cord from the power outlet and the
computer and disconnect any external devices.
3. Use the FailSafe Key to remove the Smart Cover Lock.
Removing the Smart Cover Lock Screws
To reattach the Smart Cover Lock, secure the lock in place with the
tamper-proof screws using the FailSafe Key.

Hardware Reference Guide www.hp.com 2–5
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. Turn off the computer properly through the operating system,
then turn off 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.

2–6 www.hp.com Hardware Reference Guide
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

Hardware Reference Guide www.hp.com 2–7
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
Reassembling the Computer
1. Position the chassis in the upright position. Insert the three hooks
on the right side of the bezel 1into the rectangular holes on the
chassis then rotate the bezel into place so that the three tabs on the
left side of the bezel snap into the slots on the chassis 2.
Replacing the Front Bezel