HP dx6120 User Manual
Hardware Reference Guide
HP Compaq Business Desktops
dx6120 Microtower Models
Document Part Number: 374967-001
September 2004
This guide provides basic information for upgrading this computer
model.
© Copyright 2004 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
Microsoft, MS-DOS, Windows, and Windows NT 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.
WARNING: Text set off in this manner indicates that failure to follow
Å
directions could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow
Ä
directions could result in damage to equipment or loss of information.
Hardware Reference Guide
HP Compaq Business Desktops
dx6120 Microtower Models
First Edition (September 2004)
Document Part Number: 374967-001
Contents
1 Product Features
Standard Configuration Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
Front Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Rear Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
Windows Logo Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Special Mouse Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5
Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
2 Hardware Upgrades
Serviceability Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Removing the Computer Access Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Removing the Front Bezel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Installing Additional Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
DDR2-SDRAM DIMMs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
Populating DIMM Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
Installing DIMMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–18
Reassembling the Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–25
Hardware Reference Guide www.hp.com iii
Contents
A Specifications
B Battery Replacement
C Security Lock Provisions
Installing a Security Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1
Cable Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1
Padlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–2
D Electrostatic Discharge
Preventing Electrostatic Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
Grounding Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D–1
E Routine Computer Care and Shipping Preparation
Routine Computer Care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–1
Optical Drive Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–2
Shipping Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E–3
Index
iv www.hp.com Hardware Reference Guide
Product Features
Standard Configuration Features
The HP 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 CD.
1
Microtower Configuration
Hardware Reference Guide www.hp.com 1–1
Product Features
Front Panel Components
Drive configuration may vary by model.
Front Panel Components
1 Optical Drives (CD-ROM, CD-R/RW,
DVD-ROM, DVD+R/RW, or
CD-RW/DVD Combo Drive)
2 Optical Drive Activity Lights 8 Power Button
3 Diskette Drive (optional) 9 Power On Light
4 Diskette Drive Activity Light (optional) - Hard Drive Activity Light
5 Diskette Eject Button (optional) q Headphone Jack
6 USB (Universal Serial Bus) Ports w Microphone Connector
1–2 www.hp.com Hardware Reference Guide
7 Optical Drive Eject Buttons
Rear Panel Components
Rear Panel Components
1 Power Cord Connector 7 RJ-45 Network Connector
Product Features
2 Voltage Select Switch 8
3
4
5
6
✎
Hardware Reference Guide www.hp.com 1–3
PS/2 Mouse Connector 9 Monitor Connector
PS/2 Keyboard Connector - Headphone/Line-Out Connector
a
Universal Serial Bus (USB) q Line-In Audio Connector
o
m
Serial Connector w Microphone Connector
Arrangement and number of connectors may vary by model.
The monitor connector on the system board is inactive when a PCI Express graphics card is
installed in the computer.
If a standard PCI 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 Boot Order, refer to the Computer Setup (F10)
Utility Guide on the Documentation CD.
Parallel Connector
Product Features
Keyboard
Keyboard Components
1 Function Keys Perform special functions depending on the software application
being used.
2 Editing Keys Includes the following: Insert, Home, Page Up, Delete, End, and
Page Down.
3 Status Lights Indicate the status of the computer and keyboard settings
(Num Lock, Caps Lock, and Scroll Lock).
4 Numeric Keys Work like a calculator keypad.
5 Arrow 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.
6 Ctrl Keys Used in combination with another key; its effect depends on the
application software you are using.
7 Application 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.
8 Windows Logo
Keys*
9 Alt Keys Used in combination with another key; its effect depends on the
*Keys available in select geographic regions.
1–4 www.hp.com Hardware Reference Guide
Used to open the Start menu in Microsoft Windows. Used in
combination with other keys to perform other functions.
application software you are using.
Product Features
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 “Keyboard” section to identify the Windows Logo key.
Windows Logo Key Functions
Windows Logo Key Displays or hides the Start menu.
Windows Logo Key + d Displays the Desktop.
Windows Logo Key + m Minimizes all open applications.
Shift + Windows Logo Key + m Undoes Minimize All.
Windows Logo Key + e Launches My Computer.
Windows Logo Key + f Launches Find Document.
Windows Logo Key + Ctrl + f Launches Find Computer.
Windows Logo Key + F1 Launches Windows Help.
Windows Logo Key + l Locks 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 + r Launches the Run dialog box.
Windows Logo Key + u Launches the Utility Manager.
Windows Logo Key + Tab Activates the next Taskbar button.
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.
Hardware Reference Guide www.hp.com 1–5
Product Features
Serial Number Location
Each computer has a unique serial number and a product ID number
that are located on the top cover of the computer. Keep these numbers
available for use when contacting customer service for assistance.
Serial Number and Product ID Location
1–6 www.hp.com Hardware Reference Guide
Serviceability Features
The Microtower computer includes features that make it easy to
upgrade and service. No tools are needed for most of the installation
procedures described in this chapter.
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
Å
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.
WARNING: To reduce the risk of electrical shock, fire, or damage to the
Å
equipment, do not plug telecommunications/telephone connectors into
the network interface controller (NIC) receptacles.
2
Hardware Upgrades
CAUTION: Static electricity can damage the electrical components of the
Ä
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” for
more information.
CAUTION: Before removing the computer cover, ensure that the
Ä
computer is turned off and that the power cord is disconnected from the
electrical outlet.
Hardware Reference Guide www.hp.com 2–1
Hardware Upgrades
Removing the Computer Access Panel
To remove the computer access panel:
1. Turn off the computer properly through the operating system and
turn off any external devices.
2. Disconnect the power cord from the power outlet and the
computer, and disconnect any external devices.
CAUTION: Before removing the computer access panel, ensure that the
Ä
computer is turned off and that the power cord is disconnected from the
electrical outlet.
3. Loosen the captive thumbscrew 1 that secures the access panel to
the computer chassis.
4. Slide the access panel back 2 about 2.5 cm (1 inch), 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
2–2 www.hp.com Hardware Reference Guide
Removing the Front Bezel
To remove the front bezel:
1. Turn off the computer properly through the operating system and
turn off any external devices.
2. Disconnect the power cord from the power outlet and the
computer, and disconnect any external devices.
3. Remove the computer access panel.
4. To remove the front bezel, press down on all three tabs on the
left side of the bezel 1 then rotate the bezel off the chassis 2,
beginning with the left side then the right side.
Hardware Upgrades
Removing the Front Bezel
Hardware Reference Guide www.hp.com 2–3
Hardware Upgrades
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 4GB
of memory configured in a high-performing dual channel mode.
DDR2-SDRAM DIMMs
For proper system operation, if the computer supports
DDR2-SDRAM DIMMs, the DIMMs must be:
■ industry-standard 240-pin
■ unbuffered PC3200 400 MHz-compliant or PC4300
533 MHz-compliant
■ 1.8 volt DDR2-SDRAM DIMMs
The DDR2-SDRAM DIMMs must also:
■ support CAS latency 2.5 or 3 (CL = 2.5 or CL = 3)
■ contain the mandatory JEDEC SPD information
In addition, the computer supports:
■ 256Mbit, 512Mbit, and 1Gbit 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
2–4 www.hp.com Hardware Reference Guide
Populating DIMM Sockets
The system will automatically operate in single channel mode, dual
channel Asymmetric mode, or a higher-performing dual channel
Interleaved 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 dual channel Asymmetric 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.
■ The system will operate in a higher-performing dual channel
Interleaved 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. However, the technology and device width can vary
between the channels. For example, if Channel A is populated
with two 256MB DIMMS and Channel B is populated with one
512MB DIMM, the system will operate in Interleaved mode.
■ In any mode, the maximum operational speed is determined by
the slowest DIMM in the system. For example, if the system is
populated with a DIMM that is 333 MHz and a second DIMM
that is 400 MHz, the system will run at the slower of the two
speeds.
Hardware Upgrades
There are four DIMM sockets on the system board, with two sockets
per channel. The sockets are labeled XMM1, XMM2, XMM3, and
XMM4. Sockets XMM1 and XMM2 operate in memory channel A.
Sockets XMM3 and XMM4 operate in memory channel B.
Hardware Reference Guide www.hp.com 2–5
Hardware Upgrades
DIMM Socket Locations
Item Description Socket Color
1 DIMM socket XMM1, Channel A White
2 DIMM socket XMM2, Channel A Black
3 DIMM socket XMM3, Channel B White
4 DIMM socket XMM4, Channel B Black
2–6 www.hp.com Hardware Reference Guide
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