HP Compaq dx2200 Service and Maintain

service reference guide

HP Compaq dx2200 MT

Business PC

1st Edition

This document provides information on the removal and replacement of all parts as well as information on troubleshooting, Desktop Management, setup utilities, ATA drives, safety, routine care, connector pin assignments, POST error messages, and diagnostic indicator lights.

Document Part Number 415606-001

Service Reference Guide

HP Compaq dx2200 MT Business PC

1st Edition

Document Part Number: 415606-001

March 2006

Microsoft, MS-DOS, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and other countries.

Intel is a trademark of Intel 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 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.

Service Reference Guide

HP Compaq dx2200 MT Business PC

First Edition (March 2006)

Document Part Number: 415606-001

Contents

1 Installing the Operating System

1.1 Microsoft Windows XP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1

1.1.1 Installing or Upgrading Device Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1

1.2 Converting to NTFS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

1.2.1 Windows XP Home and XP Professional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

1.3 HP Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

2 Setup Utilities and Diagnostics Features

2.1 Power-On Self-Test (POST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

2.2 Computer Setup Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

2.2.1 Using Computer Setup (F10) Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

2.2.2 Computer Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4

2.3 Recovering the Configuration Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11

2.3.1 Backing up the CMOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11

2.3.2 Restoring the CMOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11

3 Desktop Management

3.1 Initial Configuration and Deployment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

3.2 ROM Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

3.2.1 FailSafe Boot Block ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

3.2.2 Dual-State Power Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

3.2.3 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

3.2.4 World Wide Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.3 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.3.1 Password Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.3.2 Establishing a Supervisor Password Using Computer Setup . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.3.3 Establishing a User Password Using Computer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.3.4 Surge-Tolerant Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5

4 Serial and Parallel ATA Drive Guidelines and Features

4.1 SATA Hard Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

4.2 SATA Hard Drive Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

4.2.1 SATA Data Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

4.2.2 SATA Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

4.3 PATA Device Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3

4.4 PATA Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3

4.4.1 PATA Data Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3

4.4.2 PATA Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3

4.5 PATA Drive Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3

Service Reference Guide, dx2200 MT 415606-001 iii

Contents

4.5.1 PATA Device Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–4

4.6 SATA SMART Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–4

4.7 Drive Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–4

4.8 SATA BIOS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5

4.8.1 Legacy Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5

4.8.2 Native Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–6

5 Identifying the Chassis, Routine Care, and Disassembly Preparation

5.1 Chassis Designations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1

5.1.1 Microtower (MT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1

5.2 Electrostatic Discharge Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

5.2.1 Generating Static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

5.2.2 Preventing Electrostatic Damage to Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

5.2.3 Personal Grounding Methods and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3

5.2.4 Grounding the Work Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3

5.2.5 Recommended Materials and Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3

5.3 Routine Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4

5.3.1 General Cleaning Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4

5.3.2 Cleaning the Computer Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4

5.3.3 Cleaning the Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5

5.3.4 Cleaning the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5

5.3.5 Cleaning the Mouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5

5.4 Service Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6

5.4.1 Power Supply Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6

5.4.2 Tools and Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6

5.4.3 Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6

5.4.4 Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7

5.4.5 Hard Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7

5.4.6 Lithium Coin Cell Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–7

6 Removal and Replacement Procedures— Microtower (MT) Chassis

6.1 Preparation for Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1

6.2 Access Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2

6.3 Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–3

6.4 Front Drive Bezels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–4

6.4.1 5.25" Drive Bezel Blank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–4

6.4.2 Removing a 3.5” Drive Bezel Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–5

6.5 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–6

6.5.1 Installing Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–6

6.6 Expansion Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–8

6.6.1 Expansion Slot Cover Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–8

6.6.2 PCI/PCIe Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–8

6.7 Cable Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–10

6.7.1 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–11

6.8 Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–12

6.8.1 Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–12

6.8.2 5.25" Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–13

6.8.3 3.5" Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–14

iv 415606-001 Service Reference Guide, dx2200 MT

6.8.4 Removing a 3.5” Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–16

6.9 Front I/O Panel Housing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–17

6.9.1 Power Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–18

6.10Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–19

6.11System Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–20

6.12Heatsink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–21

6.13Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–22

6.14System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–24

6.15Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–25

6.15.1Type 1 Battery Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–26

6.15.2Type 2 Battery Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–27

6.15.3Type 3 Battery Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–28

6.16Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–29

A Connector Pin Assignments

B Power Cord Set Requirements

C POST Error Messages

Contents

D Memory

E Troubleshooting Without Diagnostics

Index

Service Reference Guide, dx2200 MT 415606-001 v

Contents

vi 415606-001 Service Reference Guide, dx2200 MT

Installing the Operating System

Depending on the model, Microsoft Windows XP Home or Windows XP Professional is preinstalled on the computer and will be configured automatically the first time the computer is turned on.

CAUTION: Do not add optional hardware devices to your computer until the operating system is

successfully installed. Doing so may cause errors and may prevent the operating system from installing properly.

CAUTION: Once the automatic installation has begun, DO NOT TURN OFF THE COMPUTER UNTIL

THE PROCESS IS COMPLETE. Turning off the computer during the installation process might damage the software that runs the computer.

1.1 Microsoft Windows XP

The first time the computer is turned on, Microsoft Windows is automatically installed. This takes approximately 10 minutes, depending on the system hardware configuration. Read and follow the instructions that appear on the screen to complete the installation. do not turn off your computer unless you are directed to do so.

During this process,

1.1.1 Installing or Upgrading Device Drivers

To install optional hardware devices after the OS installation is completed, you must install the device drivers for the device you are installing.

The I386 directory and its subdirectories provide the HP- or Compaq-specific integration of the operating system for the computer model and include device drivers supported by the operating system.

When prompted for the I386 directory on the operating system CD, replace the path specification

with C:\I386 or use the Browse button of the dialog box to browse the computer for the I386

folder. This action points to the appropriate drivers.

The latest support software is also available from the Web site at

http://www.hp.com/support.

Service Reference Guide, dx2200 MT 415606-001 1–1

Installing the Operating System

1.2 Converting to NTFS

1.2.1 Windows XP Home and XP Professional

The Windows XP Home and XP Professional operating systems handle only NTFS-formatted drives. When installed, XP will, if necessary, automatically convert a FAT32 drive to NTFS.

1.3 HP Soft ware

The Microsoft Windows XP Home or Windows XP Professional operating system is preinstalled on the computer and will be configured automatically the first time the computer is turned on. All other software is user-installed.

Certain drivers and utilities are available only in selected languages. You can obtain the latest version of these files, in English and selected other languages, in one of these ways:

■ HP web site at www.hp.com

■

Restore Plus! CD, which is supplied with many HP models

Additional HP software may be required in certain situations.

✎

1–2 415606-001 Service Reference Guide, dx2200 MT

Setup Utilities and Diagnostics Features

Setup Utilities (F10) and diagnostic features provide information needed about the computer system when contacting Customer Support. These tools can also be used to:

■ Change factory default settings and to set or change the system configuration, which may be

necessary when you add or remove hardware.

■ Determine if all of the devices installed on the computer are recognized by the system and

functioning properly.

■ Determine information about the operating environment of the computer.

■ Solve system configuration errors detected but not automatically fixed during the Power-On

Self-Test (POST).

■ Establish and manage passwords and other security features.

■ Establish and manage energy-saving timeouts.

All features identified in this chapter may not be available on all HP products.

✎

2.1 Power-On Self-Test (POST)

POST is a series of diagnostic tests that runs automatically when the system is turned on. POST checks the following items to ensure that the computer system is functioning properly:

■ Keyboard

■ Memory modules

■ Diskette drives

■ All IDE (ATA) mass storage devices

■ Processors

■ Controllers

If the Supervisor Password is set, a prompt appears on the screen while POST is running. You

✎

will need to enter the password before continuing. Refer to Chapter 3, Section 3.1, “Initial

Configuration and Deployment,” for information on setting, deleting, or bypassing the password.

If POST finds an error in the system, an audible and/or visual message occurs. For POST error messages and their solutions refer to Appendix C, “POST Error Messages.”

Service Reference Guide, dx2200 MT 415606-001 2–1

Setup Utilities and Diagnostics Features

2.2 Computer Setup Utilities

Use Computer Setup Utilities (F10) to:

■ Modify or restore factory default settings.

■ Set the system date and time.

■ Set, view, change, or verify the system configuration including settings for processor,

graphics, memory, audio, storage, communications, and input devices.

■ Modify the boot order of bootable devices such as hard drives, diskette drives, optical drives,

or USB devices.

■ Configure the boot priority of IDE (ATA) hard drives.

■ The system is preset to always Quick Boot.

■ Enable or disable Network Server Mode, which allows the computer to boot the operating

system when the power-on password is enabled with or without a keyboard or mouse attached. When attached to the system, the keyboard and mouse remain locked until the power-on password is entered.

■ Enable supervisor password prompting during system restarts (warm boots) as well as during

power-on.

■ Establish a supervisor password that controls access to Computer Setup (F10) Utility and the

settings described in this section.

■ Secure the integrated I/O functionality, including the serial, USB, or parallel ports, audio, or

embedded NIC, so that they cannot be used until they are unsecured.

■ Enable or disable removable media boot ability.

■ Solve system configuration errors detected but not automatically fixed during the Power-On

Self-Test (POST).

■ Execute self-tests on a specified IDE (ATA) hard drive (when supported by the drive).

2.2.1 Using Computer Setup (F10) Utilities

Computer Setup can be accessed only by turning on the computer or restarting the system. To access the Computer Setup Utilities menu, complete the following steps:

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

2. As soon as the computer is turned on, press and hold the Setup. Press

If you do not press the F10 key at the appropriate time, you must turn the computer off, then on

✎

again, and press the

If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.

Enter to bypass the title screen, if necessary.

F10 key again to access the utility.

F10 key until you enter Computer

3. A choice of headings appears in the Computer Setup Utilities menu: System Information, Standard CMOS Features, Advanced BIOS Features, Advanced Chipset Features, Integrated Peripherals, Power Management Setup, PnP/PCI Configurations, PC Health Status, Load Optimized Defaults, Set Supervisor Password, Set User Password, Save and Exit Setup, and Exit Without Saving.

2–2 415606-001 Service Reference Guide, dx2200 MT

Setup Utilities and Diagnostics Features

4. Use the arrow (left and right) keys to select the appropriate heading. Use the arrow (up and down) keys to select the option you want, then press Utilities menu, press

Esc.

Enter. To return to the Computer Setup

5. To apply and save changes, select Save and Exit Setup.

❏ If you have made changes that you do not want applied, select Exit Without Saving.

❏ To reset to factory settings, select Load Optimized Defaults. This option will restore the

original factory system defaults. You must still select Save and Exit Setup after resetting the defaults.

CAUTION: Do NOT turn the computer power OFF while the ROM is saving your F10 Computer Setup

changes because the CMOS could become corrupted. It is safe to turn off all power to the computer after you exit the F10 Setup screen.

Service Reference Guide, dx2200 MT 415606-001 2–3

Setup Utilities and Diagnostics Features

2.2.2 Computer Setup Menu

Heading Option Description

System Information

Standard CMOS Features

None Lists product name, SKU number, processor type, processor

speed, CPU ID, cache size, memory size, system ROM, integrated MAC, UUID, system serial number, asset tracking number, asset tag number, and CPU clock ratio.

Date (mm/dd/yy) Allows you to set system date.

Time (hh:mm:ss) Allows you to set system time.

PATA Controller Disables/enables PATA controller.

PATA Ch 0 Master PATA Ch 0 Slave

• For each, if PATA HDD is used, allows you to:

• run SMART HDD self-test for selected channel

•SMART Status Check –Target Disk –SMART –Smart Status Check

•HDD Short Self-Test – Target Disk – Estimated Test Time – Start Test

• HDD Extended Self-Test – Target Disk – Estimated Test Time – Start Test

• set device details on selected channel to: –None –Auto –Manual

• set access mode on selected channel to: –CHS (Cylinder-Head-Sector) –LBA (Logical Block Addressing) –Large –Auto

•view –Firmware version –Capacity –Cylinder –Head –Precomp –Landing Zone –Sector

2–4 415606-001 Service Reference Guide, dx2200 MT

Setup Utilities and Diagnostics Features

Heading Option Description

Standard CMOS Features (continued)

SATA Controller Disables/enables onboard SATA controller.

SATA Ch 1 Master SATA Ch 2 Master

For each, allows you to:

• run HDD self-test for selected channel:

•SMART Status Check

–Target Disk –SMART –SMART Status Check

•HDD Short Self-Test

–Target Disk –Estimated Test Time –Start Test

•HDD Extended Self-Test

–Target Disk –Estimated Test Time –Start Test

• set extended IDE drive on selected channel to:

•None

•Auto

• set access mode on selected channel to

•Large

•Auto

•view

•Firmware version

•Capacity

•Cylinder

•Head

•Precomp

•Landing Zone

•Sector

Floppy Controller Disables/enables the floppy disc controller.

Drive A Allows you to set Drive A to None or 1.44, 3.5 in. (Used to

disable/enable Drive A in legacy operating systems.)

Halt On Allows you to set POST error behavior to:

•All Errors

•No Errors

•All but Keyboard

•All but Diskette

• All but Diskette/Keyboard

Service Reference Guide, dx2200 MT 415606-001 2–5

Setup Utilities and Diagnostics Features

Heading Option Description

Standard CMOS Features (continued)

Advanced BIOS Features

POST Delay Allows you to set a POST delay to:

•0 seconds

•5 seconds

•10 seconds

•15 seconds

•30 seconds

Device Boot Disabling

F9 Boot Menu Disables/enables F9 Boot Menu

Removable Device Boot Priority

Hard Disk Boot Seq.

Allows you to restrict a device from booting the unit. You can disable as a bootable device:

•None

•USB

•Internal ODD

•Internal FDD

• USB + ODD + FDD

Allows you to specify the order of attached removable devices (such as Legacy Floppy or USB FDD) The first drive in the order has priority in the boot sequence and is recognized as drive A.

Allows you to specify the order of attached hard drive devices (such as USB HDD storage, USB2 Drive Key, or USB flash media). The first drive in the order has priority in the boot sequence and is recognized as drive C (if any devices are attached).

Optical Drive Boot Sequence

Network Boot Sequence

First Boot Device Second Boot

Device Third Boot Device Fourth Boot Device

Boot Up NumLock Status

Allows you to specify the order in which attached optical drives (including USB ODD) are checked for a bootable operating system image.

Allows you to specify the order in which network devices (including UP NIC cards) are checked for a bootable operating system image.

Allows you to specify which devices will boot first, second, third, and fourth or to disable any of the three:

•Removable

• Hard Disk

• Optical Drive

•Network

•Disabled

MS-DOS drive lettering assignments may not apply after a

✎

non-MS-DOS operating system has started.

Allows you to set the default NumLock status to off or on.

2–6 415606-001 Service Reference Guide, dx2200 MT

Setup Utilities and Diagnostics Features

Heading Option Description

Advanced BIOS Features (continued)

Advanced Chipset Features

Security Option Allows you to set the security option to Setup or Always so that

the password is required every time the system boots or only when entering Computer Setup.

APIC Mode Disables/enables the APIC mode.

MPS Version Control for OS

Allows you to set the MPS table version to:

•1.1

•1.4

BIOS Write

Disables/enables BIOS upgrading.

Protection

Execute Disable Bit Disables/enables Execute Disable Bit (XD) functionality, which

prevents malicious buffer overflow attacks.

Enhanced Intel

Enables/disables the primary display device: SpeedStep Technology

UMA Frame Buffer Select the UMA (Unified Memory Architecture) frame buffer

size:

•32MB

•64MB

•Auto

Init Display First (VGA Setting)

Allows you to select the primary display device:

•PCI Slot

•OnChip VGA

•PCIEx

Integrated Peripherals

SURROUNDVIEW Disables/enables SURROUNDVIEW (available when an ATI

PCIEx video card is installed).

AutoDetect PCI Clk

Disable/enable PCI clock auto-detection. (VGA Setting)

Onboard HD

Disables/enables onboard HD audio. Audio

OnChip USB

Disables/enables USB controller. Controller

USB Legacy Support

Disables/enables USB legacy support function (USB keyboard,

USB mouse, and USB Drive Key).

Onboard LAN Disables/enables onboard LAN controller.

Onboard LAN

Disables/enables the boot ROM of the onboard LAN chip. Boot ROM

Service Reference Guide, dx2200 MT 415606-001 2–7

Setup Utilities and Diagnostics Features

Heading Option Description

Integrated Peripherals (continued)

Onboard Serial Port

Allows you to select a setting for the onboard serial port:

•Disabled

•3F8/IRQ4

•2F8/IRQ3

•3E8/IRQ4

•2E8/IRQ3

Onboard Parallel Port

Allows you to select a setting for the onboard parallel port:

•Disabled

• 378/IRQ7

•278/IRQ5

•3BC/IRQ7

Parallel Port Mode Allows you to select parallel port mode:

•SPP

•EPP

•ECP

•ECP+EPP

•Normal

ECP Mode Use DMA

If Parallel Port Mode is set to ECP or ECP+EPP, allows you to set

the DMA channel for ECP Mode to 1 or 3.

Power Management Setup

PnP/PCI

Configurations

After AC Power Loss

Allows you to select system power loss behavior:

•On

•Off

• Last State

ACPI Suspend

ACPI sleep mode is S3 (Suspend To RAM) Type

External Modem

Disables/enables wake-up modem from S5. S5 Wake-Up

RTC Alarm Resume Disables/enables RTC alarm.

Date (of Month) If RTC Alarm Resume is enabled, allows you to select the day of

the month for resumption of RTC alarm. (Set to 0 for every day.)

Resume Time (hh:mm:ss)

Reset Configuration Data

If RTC Alarm Resume is enabled, allows you to select what time

the RTC alarm will resume.

Disables/enables automatic reconfiguration.

The default is Disabled. Select Enabled to reset Extended

System Configuration Data (ESCD) when you exit Setup, if you

have installed a new add-on and the system reconfiguration has

caused such a serious conflict that the OS cannot boot.

2–8 415606-001 Service Reference Guide, dx2200 MT

Setup Utilities and Diagnostics Features

Heading Option Description

Resources Controlled By

IRQ Resources

•IRQ-3 assigned to

•IRQ-4 assigned to

•IRQ-5 assigned to

•IRQ-7 assigned to

•IRQ-9 assigned to

•IRQ-10 assigned to

•IRQ11assigned to

•IRQ-12 assigned to

•IRQ-14 assigned to

•IRQ-15 assigned to

Allows you to select whether resources are controlled automatically or manually:

• Auto (ESCD–Extended Storage Configuration Data)

• Manual

BIOS can automatically configure all the bootable and Plugand-Play-compatible devices. If you choose Auto, you cannot select IRQ, DMA and memory base address fields since BIOS automatically assigns them.

When resources are controlled manually, allows you to assign each system interrupt a type, depending on the type of device using the interrupt.

Legacy ISA for devices compliant with the original PC AT bus specification, PCI/ISA PnP for devices compliant with the Plugand-Play standard whether designed for PCI or ISA bus architecture.

Maximum Payload Size

Allows you to set TLP payload size for the PCI Express Devices to (in bytes):

•128

• 256

•512

•1024

•2048

• 4096

PC Health Status

System Fan Fail Check

Disables/enables system fan detection during POST.

Smart Fan Function Disables/enables smart fan functionality.

Current CPU

(view only)

Temperature

Service Reference Guide, dx2200 MT 415606-001 2–9

Setup Utilities and Diagnostics Features

Heading Option Description

Load Optimized Defaults

Set Supervisor Password

Set User Password

Current System Temperature

Current CPU Fan Speed

Current System Fan Speed

Vcore (view only)

+12V (view only)

VCC5 (view only)

+3.3V (view only)

VBAT (V) (view only)

3VSB (V) (view only)

(view only)

Allows you to reset Computer Setup to factory defaults.

Allows you to establish a password to control access to Computer Setup.

Allows you to establish a password to control access to the computer. (Supervisor password must be set before you can set a User password.)

Save & Exit Setup

Exit Without Saving

Support for Computer Setup options may vary depending on your specific hardware configuration.

✎

Allows you to save current settings and exit Computer Setup.

Allows you to exit Computer Setup without saving changes.

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Setup Utilities and Diagnostics Features

2.3 Recovering the Configuration Settings

Recovering the configuration settings established in the Computer Setup (F10) Utility requires that you first back up the settings before a recovery is needed.

The CMOS Save/Load utility firmware can be found at & Driver Downloads for your specific model. Download the firmware files into a folder on a removable storage device. It is recommended that you save any modified computer configuration settings to a diskette, a USB flash media device, or a diskette-like device (a storage device set to emulate a diskette drive) and save the diskette or device for possible future use.

2.3.1 Backing up the CMOS

1. Make sure the computer to be backed up is turned on. Connect the removable storage to the computer.

2. Boot to DOS.

3. Type N:\folder\BIOS.exe SAVE:ABC001.DAT (where N is the drive letter of the removable storage) to save the CMOS setting to the removable storage device.

2.3.2 Restoring the CMOS

1. Make sure the target computer is turned on. Connect the removable storage to the target computer.

2. Boot to DOS.

3. Type N:\folder\BIOS.exe LOAD:ABC001.DAT (where N is the drive letter of the removable storage) to load the custom CMOS setting onto the target system.

http://www.hp.com under the Software

Service Reference Guide, dx2200 MT 415606-001 2–11

Setup Utilities and Diagnostics Features

2–12 415606-001 Service Reference Guide, dx2200 MT

Desktop Management

Support for specific features described in this guide may vary by model or software version.

✎

3.1 Initial Configuration and Deployment

HP computers come with a preinstalled system software image. After a brief software “unbundling” process, the computer is ready to be used.

A customized software image may be deployed by installing additional software applications after unbundling the preinstalled software image.

The best deployment method depends on your information technology environment and processes. The PC Deployment section of the Solutions and Services Web site

h18000.www1.hp.com/solutions/pcsolutions

deployment method.

The Restore Plus! CD, ROM-based setup, and ACPI hardware provide further assistance with

recovery of system software, configuration management and troubleshooting, and power management.

provides information to help you select the best

http://

3.2 ROM Flash

The computer’s BIOS is stored in a programmable flash ROM (read only memory). By establishing a supervisor password in the Computer Setup (F10) utility, you can protect the ROM from being unintentionally updated or overwritten. This is important to ensure the operating integrity of the computer. Should you need or want to upgrade the BIOS, you may download the latest BIOS images from the HP driver and support page: http://www.hp.com/support.

CAUTION: For maximum ROM protection, be sure to establish a supervisor password. The supervisor

password prevents unauthorized ROM upgrades.

3.2.1 FailSafe Boot Block ROM

The FailSafe Boot Block ROM allows for system recovery in the unlikely event of a ROM flash failure, for example, if a power failure were to occur during a ROM upgrade. The Boot Block is a flash-protected section of the ROM that checks for a valid system ROM flash when power to the system is turned on.

■ If the system ROM is valid, the system starts normally.

■ If the system ROM fails the validation check, the FailSafe Boot Block ROM provides

enough support to start the system from a bootable removable media that automatically invokes system BIOS upgrade utilities.

To recover the system after it enters Boot Block recovery mode, complete the following steps:

Service Reference Guide, dx2200 MT 415606-001 3–1

Desktop Management

1. Remove all removable media and turn off the power.

2. Insert a diskette containing the desired BIOS image file in the root directory. The media must be formatted using the FAT32 file system.

3. Turn on power to the system.

The failsafe Boot Block BIOS will attempt to start the system from a bootable device. If no bootable device is found, an error message will appear.

4. Remove the removable media used to upgrade the BIOS.

5. Turn the power on to restart the computer.

3.2.2 Dual-State Power Button

With Advanced Configuration and Power Interface (ACPI) enabled for Windows XP, the power button can function either as an on/off switch or as a suspend button. The suspend feature does not completely turn off power, but instead causes the computer to enter a low-power standby. This allows you to quickly power down without closing applications and to quickly return to the same operational state without any data loss.

To change the power button’s configuration, complete the following steps:

1. Left click on the Start Button, then select Control Panel > Performance and

Maintenance > Power Options.

2. In the Power Options Properties, select the Advanced tab.

3. In the Power Button section, select the desired power button setting.

After configuring the power button to function as a suspend button, press the power button to put the system in a very low power state (suspend). Press the button again to quickly bring the system out of suspend to full power status. To completely turn off all power to the system, press and hold the power button for four seconds.

CAUTION: Do not use the power button to turn off the computer unless the system is not responding;

turning off the power without operating system interaction could cause damage to or loss of data on the hard drive.

3.2.3 Power Management

Power Management is a feature that saves energy by shutting down certain components of the computer when they are not in use, thus saving energy without having to shut down the computer.

With Advanced Configuration and Power Interface (ACPI) enabled for Windows XP, timeouts (the period of inactivity allowed before shutting down these components) can be enabled, customized, or disabled using the operating system.

1. In Windows XP, left click on the Start Button, then select Control Panel > Power Options.

2. In the Power Options Properties, select the Power Schemes tab.

3. Select the desired power scheme settings.

Use Display Properties to establish, modify, or disable Power Management settings for the monitor. To access Display Properties, right click on the Windows Desktop, then choose

Properties.

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3.2.4 World Wide Web Site

When making the transition to new or revised operating systems, it is important to implement the support software designed for that operating system. If you plan to run a version of Microsoft Windows that is different from the version included with your computer, you must install corresponding device drivers and utilities to ensure that all features are supported and functioning properly.

HP has made the task of locating, accessing, evaluating, and installing the latest support software easier. You can download the software from the latest device drivers, utilities, and flashable ROM images needed to run the latest Microsoft Windows operating system on your HP computer.

3.3 Security

3.3.1 Password Security

The user password prevents unauthorized use of the computer by requiring entry of a password to access applications or data each time the computer is turned on or restarted. The supervisor password specifically prevents unauthorized access to Computer Setup, and can also be used as an override to the user password. That is, when prompted for the user password, entering the supervisor password instead will allow access to the computer.

Desktop Management

http://www.hp.com/support. The Web site contains

A network-wide setup password can be established to enable the system administrator to log in to all network systems to perform maintenance without having to know the power-on password, even if one has been established.

3.3.2 Establishing a Supervisor Password Using Computer Setup

Establishing a supervisor password through Computer Setup prevents reconfiguration of the computer (use of the Computer Setup (F10) utility) until the password is entered.

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

2. As soon as the computer is turned on, press and hold the Setup. Press

If you do not press the F10 key at the appropriate time, you must turn the computer off, then on

✎

again, and press the F10 key again to access the utility.

3. Select Set Supervisor Password and follow the instructions on the screen.

4. Before exiting, click Save and Exit Setup.

Enter to bypass the title screen, if necessary.

F10 key until you enter Computer

3.3.3 Establishing a User Password Using Computer Setup

Establishing a user password through Computer Setup prevents access to the computer when power is turned on, unless the password is entered. When a user password is set, Computer Setup presents Password Options under the Security menu. Password options include Password Prompt on Warm Boot. When Password Prompt on Warm Boot is enabled, the password must also be entered each time the computer is rebooted.

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

Service Reference Guide, dx2200 MT 415606-001 3–3

Desktop Management

2. As soon as the computer is turned on, press the F10 key to enter Computer Setup.

If you do not press the F10 key at the appropriate time, you must turn the computer off, then on

✎

again, and press the

If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.

3. Select Set User Password and follow the instructions on the screen.

4. Before exiting, click Save and Exit Setup.

Entering a User Password

To enter a user password, complete the following steps:

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

F10 key again to access the utility.

2. When the prompt appears on the monitor, type your current password, then press

Type carefully; for security reasons, the characters you type do not appear on the screen.

✎

If you enter the password incorrectly, inclining beeping tones are heard. Try again.

Entering a Supervisor Password

If a supervisor password has been established on the computer, you will be prompted to enter it each time you run Computer Setup.

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

2. As soon as the computer is turned on, press the

If you do not press the F10 key at the appropriate time, you must turn the computer off, then on

✎

again, and press the

If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.

3. When the prompt appears on the monitor, type the supervisor password, then press the key.

Type carefully; for security reasons, the characters you type do not appear on the screen.

F10 key again to access the utility.

F10 key to enter Computer Setup.

✎

Enter.

Enter

If you enter the password incorrectly, inclining beeping tones are heard. Try again.

Changing a User or Supervisor Password

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart.

2. To change the user password, go to step 3.

To change the supervisor password, as soon as the computer is turned on, press the to enter Computer Setup.

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F10 key

Desktop Management

If you do not press the F10 key at the appropriate time, you must turn the computer off, then on

✎

again, and press the

If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.

3. When the prompt appears, type your current password, then select the desired Set...Password item from the instructions on the screen.

Type carefully; for security reasons, the characters you type do not appear on the screen.

F10 key again to access the utility.

F10 headings. Then, enter the new password twice. Follow the

4. Press the

The new password takes effect the next time you turn on the computer.

Enter key.

Deleting a User or Supervisor Password

1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart. To delete the supervisor password, run Computer Setup.

2. To delete the password, as soon as the computer is turned on, press the Computer Setup.

If you do not press the F10 key at the appropriate time, you must turn the computer off, then on

✎

again, and press the

If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.

3. When the prompt appears, type your current password

current password

4. Press the Enter key then, select either Set User or Set Supervisor Password in the F10 menu as described in the previous sections.

5. When the prompt appears on the monitor press the advising you that the password has been disabled.

F10 key again to access the utility.

Enter key twice. A message will appear

F10 key to enter

Clearing Passwords

If you forget your password, you cannot access the computer. To clear the password:

1. Turn off and unplug the computer.

2. Remove the access panel.

3. Move the CMOS jumper from pins 2-3 to pins 1-2 and keep it there for at least 5 seconds.

4. Reset the jumper to pins 1-2 and replace the access panel.

5. Restart the computer.

3.3.4 Surge-Tolerant Power Supply

An integrated surge-tolerant power supply provides greater reliability when the computer is hit with an unpredictable power surge. This power supply is rated to withstand a power surge of up to 2000 volts without incurring any system downtime or data loss.

Service Reference Guide, dx2200 MT 415606-001 3–5

Desktop Management

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Serial and Parallel ATA Drive Guidelines and

Features

Serial ATA = SATA

✎

Parallel ATA = PATA

HP does not support the use of a PATA (IDE) hard drive on this model of computer.

4.1 SATA Hard Drives

Serial ATA Hard Drive Characteristics

Number of pins/conductors in data cable 7/7

Number of pins in power cable 15

Maximum data cable length 39.37 in (100 cm)

Data interface voltage differential 400-700 mV

Drive voltages 5V, 12 V

Jumpers for configuring drive N/A

Data transfer rate 1.5 Gb/s

When attaching the SATA cable to the system board always connect the primary hard drive to

✎

SATA 0.

Service Reference Guide, dx2200 MT 415606-001 4–1

Serial and Parallel ATA Drive Guidelines and Features

4.2 SATA Hard Drive Cables

4.2.1 SATA Data Cable

Always use an HP approved SATA 3.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s drives.

SATA data cables are susceptible to damage if overflexed. Never crease a SATA data cable and never bend it tighter than a 30 mm (1.18 in) radius.

The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive. As shown in the table, each cable has 3 grounds, and 4 transmit/receive pins.

Pin Number Usage Device Plug Host Plug

P1 Ground Ground Ground

P2* A+ Transmit data Receive data

P3* A- Transmit data Receive data

P4 Ground Ground Ground

P5** B- Receive data Transmit data

P6** B+ Receive data Transmit data

P7 Ground Ground Ground

*P2 and P3 differential signal pair **P5 and P6 differential signal pair

4.2.2 SATA Power Cable

Pin Usage Notes Pin Usage Notes

P1 V3.3 3.3 V power P9 V5 5 V power

P2 V3.3 3.3 V power P10 Ground

P3 V3.3 3.3 V power P11 Ground

P4 Ground P12 Ground

P5 Ground P13 V 12 12 V power

P6 Ground P14 V12 12 V power

P7 V5 5 V power P15 V12 12 V power

P8 V5 5 V power

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4.3 PATA Device Information

This information applies to optical drives in a computer having one or two SATA drive controllers and a single PATA drive controller.

PATA hard drives are not supported on these models.

4.4 PATA Cables

4.4.1 PATA Data Cable

Pin Signal Pin Signal Pin Signal

Serial and Parallel ATA Drive Guidelines and Features

1 2 3 4 5

6 7 8 9 10

11 12 13 14

Reset Ground DD7 DD8 DD6

DD9 DD5 DD10 DD4 DD11

DD3 DD12 DD2 DD13

4.4.2 PATA Power Cable

Pin Usage

1 +12 V

2Ground

15 16 17 18 19

20 21 22 23 24

25 26 27 28

DD1 DD14 DD0 DD15 Ground

(Key) DMARQ Ground DIOW Ground

DIOR Ground IORDY CSEL

29 30 31 32 33

34 35 36 37 38

39 40

DMAK Ground INTRQ IOCS16 DA1

PDIAG (cable detect) DA0 DA2 CS1FX CS3FX

DASP Ground

3Ground

4+5 V

4.5 PATA Drive Installation Guidelines

The computer system boards for these products have one Parallel ATA (PATA) channel with a single connector. The channel can have up to two devices attached to it. All drives are connected to the channel using an industry-standard 80-conductor cable.

The industry-standard 1.44 MB diskette drive has its own separate channel and is not included as

✎

a part of the maximum four ATA drives.

Service Reference Guide, dx2200 MT 415606-001 4–3

Serial and Parallel ATA Drive Guidelines and Features

Each drive attached to a channel must have a drive designation. If a drive is attached to the Device 0 cable position and its cable-select jumper is present, the drive is designated as Device 0. Similarly, if a drive is attached to the Device 1 cable position and its cable-select jumper is present, the drive is designated as Device 1.

For optimal performance of a computer system, all drives need to be attached to the PATA channel(s) in a specified sequence. This sequence is determined by the device class of the drives and by specific attach sequence rules.

4.5.1 PATA Device Classes

In order to determine the best drive attach sequence, ATA/ATAPI drives are segregated into four different classes based upon the bandwidth demands they place on an ATA channel. The most demanding devices are in Class 1 and the least demanding are in Class 4.

Class 1

Hard

Drives

Not Supported

Class 2

High Speed

Optical Drives

DVD DVD-CD R/W

General Attach Guidelines

■ The lower the device class number, the faster the device and the more bandwidth required.

■ Drives installed in the Device 0 position receive the greatest possible bandwidth.

4.6 SATA SMART Drives

The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers have built-in drive failure prediction that warns the user or network administrator of an impending failure or crash of the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as reallocated sector count, spin retry count, and calibration retry count. If the drive determines that a failure is imminent, it generates a fault alert.

4.7 Drive Capacities

Class 3

Optical Storage

Drives

R/W CD-ROM CD-ROM

Class 4

Magnetic

Storage Drives

Zip

The combination of the file system and the operating system used in the computer determines the maximum usable size of a drive partition. A drive partition is the largest segment of a drive that may be properly accessed by the operating system. A single hard drive may therefore be subdivided into a number of unique drive partitions in order to make use of all of its space.

Because of the differences in the way that drive sizes are calculated, the size reported by the operating system may differ from that marked on the hard drive or listed in the computer specification. Drive size calculations by drive manufacturers are bytes to the base 10 while calculations by Microsoft are bytes to the base 2.

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Serial and Parallel ATA Drive Guidelines and Features

Drive/Partition Capacity Limits

Maximum Size

File

System

FAT 32 ATA Windows 2000/ XP 32 GB 128 PB

NTFS ATA Windows NT/2000/XP 2 TB 128 PB

Controller

Type Operating System

4.8 SATA BIOS

Windows 2000 and XP Windows 9x, NT, and Linux

Enhanced Mode (default BIOS Setting) —Separate IDE controller

•PATA Controller in Legacy Mode

- Device 0 is accessible as Device 0 of PATA controller’s Primary Channel

- Device 1 is accessible as Device 1of PATA controller’s Primary Channel

•SATA Controller in Native Mode

- SATA 0 is accessible as Device 0 of SATA controller’s Primary Channel

- SATA 1 is accessible as Device 0 of SATA controller’s Secondary Channel SATA 2 is accessible as Device 1of SATA controller’s Primary Channel

- SATA 3 is accessible as Device 1 of SATA controller’s Secondary Channel

Partition Drive

Compatibility Mode (non-default BIOS Setting) —Combined IDE controller

•PATA Controller in Legacy Mode

- Device 0 is accessible as Device 0 of the combined controller’s Secondary Channel

- Device 1 is accessible as Device 1of the combined controller’s Secondary Channel

•SATA Controller in Legacy Mode

- SATA 0 is accessible as Device 0 of the combined controller’s Primary Channel

- SATA 1 is inaccessible

- SATA 2 is accessible as device 1 of the combined controller’s Primary Channel

- SATA 3 is inaccessible

4.8.1 Legacy Mode

The Legacy mode is used to access devices attached to an embedded ATA controller. Each channel of the controller requires two fixed I/O address ranges and an IRQ.

■ Primary Channel

❏ Command block: 1F0h - 1F7h

❏ Control block: 3F6h

❏ IRQ: 14

■ Secondary Channel

❏ Command block: 170h - 177h

❏ Control block: 376h

❏ IRQ: 15

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Serial and Parallel ATA Drive Guidelines and Features

4.8.2 Native Mode

The native mode is used to access devices attached to additional ATA controllers and is not supported by many legacy operating systems. Addresses are assigned by PCI Plug-n-Play BIOS and the IRQ is shared with multiple controllers. Base Address Registers for the Command and Control Block are found in the PCI Configuration Space.

■ Offset 10h—Primary Command base address

■ Offset 14h—Primary Control base address

■ Offset 18h—Secondary Command base address

■ Offset 1Ch—Secondary Control base address

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Identifying the Chassis, Routine Care, and

Disassembly Preparation

This chapter provides general service information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service.

CAUTION: 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 system board or component damage.

5.1 Chassis Designations

5.1.1 Microtower (MT)

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Identifying the Chassis, Routine Care, and Disassembly Preparation

5.2 Electrostatic Discharge Information

A sudden discharge of static electricity from your finger or other conductor can destroy staticsensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not appear to be affected at all and can work perfectly throughout a normal cycle. The device may function normally for a while, but it has been degraded in the internal layers, reducing its life expectancy.

Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions.

5.2.1 Generating Static

The following table shows that:

■ Different activities generate different amounts of static electricity.

■ Static electricity increases as humidity decreases.

Relative Humidity

Event 55% 40% 10%

Walking across carpet Walking across vinyl floor Motions of bench worker

Removing bubble pack from PCB Packing PCBs in foam-lined box

7, 50 0 V

3,000 V

400 V

7,000 V

5,000 V

15,000 V

5,000 V

800 V

20,000 V 11,000 V

700 volts can degrade a product.

✎

5.2.2 Preventing Electrostatic Damage to Equipment

Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following packaging and grounding precautions are necessary to prevent damage to electric components and accessories.

■ To avoid hand contact, transport products in static-safe containers such as tubes, bags, or

boxes.

■ Protect all electrostatic parts and assemblies with conductive or approved containers or

packaging.

■ Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.

■ Place items on a grounded surface before removing them from their container.

■ Always be properly grounded when touching a sensitive component or assembly.

35,000 V 12,000 V

6,000 V

26,500 V 21,000 V

■ Avoid contact with pins, leads, or circuitry.

■ Place reusable electrostatic-sensitive parts from assemblies in protective packaging or

conductive foam.

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Identifying the Chassis, Routine Care, and Disassembly Preparation

5.2.3 Personal Grounding Methods and Equipment

Use the following equipment to prevent static electricity damage to equipment:

■ Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the

ground cords. To provide proper ground, a strap must be worn snug against bare skin. The ground cord must be connected and fit snugly into the banana plug connector on the grounding mat or workstation.

■ Heel straps/Toe straps/Boot straps can be used at standing workstations and are

compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use them on both feet with a maximum of one-megohm ± 10% resistance between the operator and ground.

Static Shielding Protection Levels

Method Voltage

Antistatic plastic Carbon-loaded plastic Metallized laminate

1,500

7, 5 0 0

15,000

5.2.4 Grounding the Work Area

To prevent static damage at the work area, use the following precautions:

■ Cover the work surface with approved static-dissipative material. Provide a wrist strap

connected to the work surface and properly grounded tools and equipment.

■ Use static-dissipative mats, foot straps, or air ionizers to give added protection.

■ Handle electrostatic sensitive components, parts, and assemblies by the case or PCB

laminate. Handle them only at static-free work areas.

■ Turn off power and input signals before inserting and removing connectors or test

equipment.

■ Use fixtures made of static-safe materials when fixtures must directly contact dissipative

surfaces.

■ Keep work area free of nonconductive materials such as ordinary plastic assembly aids and

Styrofoam.

■ Use field service tools, such as cutters, screwdrivers, and vacuums, that are conductive.

5.2.5 Recommended Materials and Equipment

Materials and equipment that are recommended for use in preventing static electricity include:

■ Antistatic tape

■ Antistatic smocks, aprons, or sleeve protectors

■ Conductive bins and other assembly or soldering aids

■ Conductive foam

■ Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance

■ Static-dissipative table or floor mats with hard tie to ground

■ Field service kits

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Identifying the Chassis, Routine Care, and Disassembly Preparation

■ Static awareness labels

■ Wrist straps and footwear straps providing one-megohm +/- 10% resistance

■ Material handling packages

■ Conductive plastic bags

■ Conductive plastic tubes

■ Conductive tote boxes

■ Opaque shielding bags

■ Transparent metallized shielding bags

■ Transparent shielding tubes

5.3 Routine Care

5.3.1 General Cleaning Safety Precautions

1. Never use solvents or flammable solutions to clean the computer.

2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use the cloth on the component.

3. Always unplug the computer when cleaning with liquids or damp cloths.

4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.

5. Disconnect the keyboard before cleaning it.

6. Wear safety glasses equipped with side shields when cleaning the keyboard.

5.3.2 Cleaning the Computer Case

Follow all safety precautions in Section 5.3.1, “General Cleaning Safety Precautions,” before cleaning the computer.

To clean the computer case, follow the procedures described below:

■ To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.

■ For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it

with a cloth or swab dampened with clear water.

■ For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will

evaporate quickly and not leave a residue.

■ After cleaning, always wipe the unit with a clean, lint-free cloth.

■ Occasionally clean the air vents on the computer. Lint and other foreign matter can block the

vents and limit the airflow.

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5.3.3 Cleaning the Keyboard

Follow all safety precautions in Section 5.3.1, “General Cleaning Safety Precautions,” before cleaning the keyboard.

To clean the tops of the keys or the keyboard body, follow the procedures described in Section

5.3.2, “Cleaning the Computer Case.”

When cleaning debris from under the keys, review all rules in Section 5.3.1, “General Cleaning

Safety Precautions,” before following these procedures:

CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under

the keys.

■ Visible debris underneath or between the keys may be removed by vacuuming or shaking.

■ Canned, pressurized air may be used to clean debris from under the keys. Caution should be

used as too much air pressure can dislodge lubricants applied under the wide keys.

■ If you remove a key, use a specially designed key puller to prevent damage to the keys. This

tool is available through many electronic supply outlets.

CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are

improperly removed or installed, the keyboard may not function properly.

Identifying the Chassis, Routine Care, and Disassembly Preparation

■ Cleaning under a key may be done with a swab moistened with isopropyl alcohol and

squeezed out. Be careful not to wipe away lubricants necessary for proper key functions. Use tweezers to remove any fibers or dirt in confined areas. Allow the parts to air dry before reassembly.

5.3.4 Cleaning the Monitor

■ Wipe the monitor screen with a clean cloth moistened with water or with a towelette

designed for cleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into the housing and damage a component. Never use solvents or flammable liquids on the monitor.

■ To clean the monitor body follow the procedures in Section 5.3.2, “Cleaning the Computer

Case.”

5.3.5 Cleaning the Mouse

Before cleaning the mouse, ensure that the power to the computer is turned off.

■ Clean the mouse ball by first removing the retaining plate and the ball from the housing. Pull

out any debris from the ball socket, clean the rotating encoder shafts, and wipe the ball with a clean, dry cloth before reassembly.

■ To clean the mouse body, follow the procedures in Section 5.3.2, “Cleaning the Computer

Case.”

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Identifying the Chassis, Routine Care, and Disassembly Preparation

5.4 Service Considerations

Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the computer.

5.4.1 Power Supply Fan

The power supply fan is a variable-speed fan based on the temperature in the power supply.

CAUTION: The cooling fan is on when the computer is “ON” or in “Suspend to RAM” modes.

The cooling fan is off when the computer is in “Dormant”, Suspend to Disk”, or “Soft Off” modes.

The cooling fan is always on when the computer is either in the “On,” “Standby,” or “Suspend” modes.

You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

5.4.2 Tools and Software Requirements

To service the computer, you need the following:

■ Torx T-15 screwdriver (Compaq screwdriver with bits, PN 161946-001)

■ Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)

■ Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)

■ Diagnostics software

■ Compaq tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or

Compaq tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002)

5.4.3 Screws

The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.

Metric screws have a black finish.

✎

U.S. (Unified Standard) screws have a silver finish and are only used on hard drives.

As each subassembly is removed from the computer, it should be placed away from the work

✎

area to prevent damage.

5–6 415606-001 Service Reference Guide, dx2200 MT

5.4.4 Cables and Connectors

Most cables used throughout the unit are flat, flexible cables. These cables must be handled with care to avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced.

CAUTION: When servicing this computer, ensure that cables are placed in their proper location during

the reassembly process. Improper cable placement can damage the computer.

5.4.5 Hard Drives

Handle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies to failed drives as well as replacement spares.

■ If a drive must be mailed, place the drive in an HP approved hard drive shipping container or

other suitable protective packaging and label the package “Fragile: Handle With Care.”

■ Do not remove hard drives from the shipping package for storage. Keep hard drives in their

protective packaging until they are actually mounted in the CPU.

Identifying the Chassis, Routine Care, and Disassembly Preparation

■ Avoid dropping drives from any height onto any surface.

■ If you are inserting or removing a hard drive, turn off the computer. Do not remove a hard

drive while the computer is on or in standby mode.

■ Before handling a drive, ensure that you are discharged of static electricity. While handling a

drive, avoid touching the connector. For more information about preventing electrostatic damage, refer to Section 5.2, “Electrostatic Discharge Information.”

■ Do not use excessive force when inserting a drive.

■ Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic

fields such as monitors or speakers.

5.4.6 Lithium Coin Cell Battery

The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime of about three years.

See the appropriate removal and replacement chapter for the chassis you are working on in this guide for instructions on the replacement procedures.

WARNING: This computer contains a lithium battery. There is a risk of fire and chemical burn if the

battery is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or fire, or expose it to temperatures higher than 140ºF (60ºC).

CAUTION: Batteries, battery packs, and accumulators should not be disposed of together with the general household waste.

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Identifying the Chassis, Routine Care, and Disassembly Preparation

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Removal and Replacement Procedures—

Microtower (MT) Chassis

Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly.

Not all features listed in this guide are available on all computers.

✎

6.1 Preparation for Disassembly

See Chapter 5, “Identifying the Chassis, Routine Care, and Disassembly Preparation,” for initial procedures.

1. Close any open software applications.

2. Exit the operating system.

3. Remove any diskette or compact disc from the computer.

4. Turn off the computer and any peripheral devices that are connected to it.

CAUTION: Turn off the computer before disconnecting any cables.

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. In some systems the cooling fan is on even when the computer is in the “Standby,” or “Suspend” modes. The power cord should always be disconnected before servicing a unit.

5. Disconnect the power cord from the electrical outlet and then from the computer.

6. Disconnect all peripheral device cables from the computer.

During disassembly, label each cable as you remove it, noting its position and routing. Keep all

✎

screws with the units removed.

CAUTION: The screws used in the computer are of different thread sizes and lengths; using the wrong

screw in an application may damage the unit.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.2 Access Panel

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

CAUTION: 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. Disconnect the power cord from the computer and from the power source 1.

3. Remove the two screws that secure the access panel to the computer chassis 2.

4. Slide the access panel back about 6 mm (1/4 inch), then rotate the top of the panel away from the chassis (pivot on the bottom) and lift it off the unit 3.

To replace the access panel, reverse the removal steps.

6–2 415606-001 Service Reference Guide, dx2200 MT

6.3 Front Bezel

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Pull outward 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.

Removal and Replacement Procedures— Microtower (MT) Chassis

To reinstall the front bezel, reverse the removal procedure.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.4 Front Drive Bezels

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.3, “Front Bezel”).

3. Remove the front bezel (Section 6.3, “Front Bezel”).

6.4.1 5.25" Drive Bezel Blank

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.

To install a bezel blank, slide the left side of the blank into the two retainer slots on the left side of the front bezel then snap the right side of the blank into place.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.4.2 Removing a 3.5” Drive Bezel Blank

While facing the inside of the front bezel, press outward on the retaining tabs on each side of the bezel blank 1 and pull the bezel blank inwards to remove it 2.

To install a 3.5” bezel blank, press the blank inward from the inside of the front bezel so that it

✎

snaps into place.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.5 Memory

For more information on the memory in this series of computers, refer to Appendix D,

“Memory.”

6.5.1 Installing Memory Modules

CAUTION: 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.

CAUTION: 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 Chapter 5 for more information.

CAUTION: When handling a memory module, be careful not to touch any of the contacts. Doing so

may damage the module.

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

WARNING: To reduce risk of personal injury from hot surfaces, allow the internal system components to

cool before touching.

3. Lay the computer down on its side to make it easier to work on.

4. 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.

A memory module can be installed in only one way. Match the notch on the module with the tab

✎

on the memory socket.

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Removal and Replacement Procedures— Microtower (MT) Chassis

5. 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.

6. Repeat steps 4 and 5 for any additional modules that you want to install.

To reassemble the computer, reverse the removal procedure.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.6 Expansion Cards

The computer has two PCI expansion slots that can accommodate expansion cards up to

17.46 cm (6.875 inches) in length, one PCIe x1 expansion slot, and one PCIe x16 expansion slot.

6.6.1 Expansion Slot Cover Lock

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Lay the computer down on its side to make it easier to work on.

4. On the rear panel of the computer, remove the screw that secures the slot cover lock in place 1 then, slide the slot cover lock up and away from the slots to remove it from the computer 2.

6.6.2 PCI/PCIe Expansion Card

To remove an expansion card continue with step 1.

To install an expansion card in an existing empty slot go to step 9.

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Lay the computer down on its side to make it easier to work on.

4. Remove the slot cover lock (Section 6.6.1, “Expansion Slot Cover Lock”)

If you are installing an expansion card for the first time go to step 9.

If you are replacing an existing expansion card go to step 5.

5. Disconnect any cables attached to the expansion card.

6. Hold the card at each end and carefully rock it back and forth until the connectors pull free from the socket. Be sure not to scrape the card against other components.

7. Store the card in anti-static packaging.

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Removal and Replacement Procedures— Microtower (MT) Chassis

8. Install a new expansion card or an expansion slot cover to close the open slot.

To install a replacement expansion card go to step 10.

9. If you are installing an expansion card for the first time you must first remove the expansion slot cover. Use a flatblade screwdriver to pry out the metal shield on the rear panel that covers the expansion slot. Be sure you remove the appropriate shield for the expansion card you are installing.

Removable Shield Expansion Card Type

Top shield PCI e x16

Second shield PCI e x1

Third shield PCI

Bottom shield PCI

10. With the card aligned so the mounting bracket will fit firmly against the computer

backwall 1, slide the expansion card into the expansion socket and press it firmly into place 2.

When you install an expansion card, make sure you press firmly on the card so that the entire

✎

connector seats properly in the expansion card socket.

11. Reinstall the slot cover lock and its retaining screw.

12. Replace the access panel.

13. Connect external cables to the installed card, if needed.

Reconfigure the computer, if necessary.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.7 Cable Management

Always follow good cable management practices when working inside the computer.

■ Keep cables away from major heat sources like the heatsink.

■ Do not jam cables on top of expansion cards or memory modules.Printed circuit cards like

these are not designed to take excessive pressure on them.

■ When folding a flat ribbon cable, never fold to a sharp crease. Sharp creases may damage the

wires.

■ Some flat ribbon cables come prefolded. Never change the folds on these cables.

■ Do not bend any cable sharply. A sharp bend can break the internal wires.

■ Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.

■ Never crease a SATA data cable.

■ Do not rely on components like the drive cage, power supply, or computer cover to push

cables down into the chassis. Always position the cables to lay properly by themselves.

When removing the power supply power cables from the P1 connector on the system board, always follow these steps:

1. Squeeze on the top of the retaining latch attached to the cable end of the connector 1.

2. Grasp the cable end of the connector and pull it straight up 2.

CAUTION: Always pull the connector - NEVER pull on the cable. Pulling on the cable could damage the

cable and result in a failed power supply.

6–10 415606-001 Service Reference Guide, dx2200 MT

6.7.1 Cable Connections

Cable To Cable Designator

Power Supply 1st SATA Hard drive P6

Power Supply System board, 24-pin P1

Power Supply CPU power, 4-pin P2

Power Supply 1st Optical drive P3

Power Supply 2nd Optical drive P4

Power Supply 2nd SATA Hard drive P5

Power Supply DIskette drive P7

Cable To PCA Designator

Diskette drive System board FDD1 (Black)

1st SATA Hard drive System board SATA 0 (Orange)

2nd SATA Hard drive System board SATA 1 (Orange)

Removal and Replacement Procedures— Microtower (MT) Chassis

ODD Data System board IDE1(Blue)

ODD Audio System board JCD1 (Black)

Heatsink fan System board CPU FAN 2 (Brown)

Secondary system fan System board SYSFAN1(White)

Front power on button System board JFPF1 (Black)

Front I/O USB System board JUSB1 (Black)

Speaker System board AUDIO1 (White)

Front audio System board AUD1 (Black)

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.8 Drives

The computer supports up to four drives that may be installed in various configurations.

This Section describes the procedure for replacing or upgrading the storage drives. A Torx T-15 screwdriver is needed to remove and install the guide screws on a drive.

CAUTION: Make sure personal files on the hard drive are backed up to an external storage device

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.

6.8.1 Drive Positions

Drive Positions

Item Description Item Description

1 Optical* drive 4 Internal hard drive (secondary)

2 Optical* drive 5 Internal hard drive (primary)

3 External

*An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DVD-R/RW, or CD-RW/DVD Combo drive.

Optional media card reader illustrated.

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3.5”

6.8.2 5.25" Drive

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Remove the front bezel (Section 6.3, “Front Bezel”).

4. Disconnect the power, data, and audio cables, as necessary, from the back of the drive.

5. Remove the two retainer screws that secure the drive in the drive cage 1.

6. Slide the drive forward out of the drive cage, as shown in the illustration below 2.

Removal and Replacement Procedures— Microtower (MT) Chassis

7. After the drive has been removed from the chassis, remove the two guide screws from the right side of the drive. These screws should be transferred to the new drive.

To install a drive, reverse the removal procedure.

If you are installing a 5.25" drive for the first time into bay 2 you must first remove the metal

✎

shield that covers the bay by pressing in on the silver-colored tab on the left side of the chassis then pulling the shield out from the front of the chassis. It is not necessary to remove the drive from bay 1 when performing this operation.

There are a total of eight extra guide/retainer screws on the front of the chassis behind the bezel.

✎

Four have Unified Standard (U.S.) #6-32 standard threads and four have M3 metric threads. U.S. screws are used for hard drives and have a silver finish. Metric screws are used for all other drives and have a black finish. Be sure to install the appropriate guide screws into the drive.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.8.3 3.5" Drive

If you are installing a device for the first time in the external 3.5” drive bay you will need to use a flat blade screwdriver to break out the metal shield.

The 3.5" external drive bay may be populated with a diskette drive or a media card reader. The removal procedure is the same for both devices.

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 access panel. (Section 6.2, “Access Panel”)

4. Remove the front bezel. (Section 6.3, “Front Bezel”)

5. If the device is a media card reader, disconnect the internal USB cable from the system board. If the device is a diskette drive, disconnect the power and data cables from the back of the drive.

6. Remove the retainer screws that secure the drive to the bay 1 then slide the drive forward and out of the bay 2.

To install a drive, reverse the removal procedure. Be sure to install a guide screw on the front right side of a new drive. The guide screw helps secure the drive in place.

Refer to the table on the following page for proper retainer and guide screw locations.

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Removal and Replacement Procedures— Microtower (MT) Chassis

Device Retainer Screws Guide Screws

Diskette Drive 2 (labeled “FDD” on chassis) 1 (front left side of

drive)

Media Card Reader

If you are installing a drive in the external 3.5" drive bay for the first time, use a flatblade

✎

screwdriver to pry out the metal shield covering the bay.

There are a total of eight extra guide/retainer screws on the front of the chassis behind the bezel.

✎

2 (labeled “CR” on chassis) none

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.8.4 Removing a 3.5” Hard Drive

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Remove the front bezel (Section 6.3, “Front Bezel”).

4. Disconnect the power, and data cables from the back of the drive.

5. Remove the four retaining screws that secure the drive in the drive cage 1.

6. Slide the drive out of the rear of the drive bay 2.

To replace the hard drive, reverse the removal procedure. No guide screws are required for drives installed in the hard drive bays (bays 4 and 5).

If you replaced the primary hard drive, the Restore Plus! CD may be used to restore the operating

✎

system, software drivers, and/or any software applications that were preinstalled on the computer. Follow the instructions in the guide included with the CD. When the restore process has been completed, reinstall any personal files that were backed up before replacing the hard drive.

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Removal and Replacement Procedures— Microtower (MT) Chassis

6.9 Front I/O Panel Housing Assembly

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on (Section 6.1, “Preparation for Disassembly”).

3. Disconnect two attaching cables from the system board: the power switch/LED cable, and the front USB cable.

4. Free the two cables from the cable tie that is attached to the chassis.

5. Remove the screw 1 that secures the housing to the chassis and then rotate the housing away from the chassis and pull the assembly out of the chassis 2.

To install the housing assembly, reverse the removal procedures.

Service Reference Guide, dx2200 MT 415606-001 6–17

Removal and Replacement Procedures— Microtower (MT) Chassis

6.9.1 Power Switch Assembly

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel and rotate the computer so the system board is parallel to the table to make it easier to work on (Section 6.2, “Access Panel”).

3. Disconnect the braided Power/LED cables from the system board.

4. Free the braided cables from the cable tie that is attached to the chassis.

5. Squeeze the top of the switch holder 1. rotate the switch, and remove it from the chassis.

To install the power switch assembly, reverse the removal procedures.

6–18 415606-001 Service Reference Guide, dx2200 MT

6.10 Speaker

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Remove the front bezel (Section 6.3, “Front Bezel”).

4. Disconnect the speaker cable from the system board.

5. Free the cable from the cable tie that is attached to the chassis.

6. Remove the screw that secures the speaker to the inside of the chassis 1 then, remove the speaker 2 by sliding it out of the retaining clips

Removal and Replacement Procedures— Microtower (MT) Chassis

To install the speaker, reverse the removal procedure.

When installing the speaker, make sure the speaker wires point towards the speaker retaining screw.

Service Reference Guide, dx2200 MT 415606-001 6–19

Removal and Replacement Procedures— Microtower (MT) Chassis

6.11 System Fan

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Disconnect the cable that connects the system fan to the system board.

4. Remove the screws that secure the fan to the chassis and remove the fan.

To install the fan, reverse the removal procedures.

When installing the fan, make sure the wires leading from the fan are located near the P2 4-pin

✎

power connector on the system board.

6–20 415606-001 Service Reference Guide, dx2200 MT

6.12 Heatsink

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Lay the computer down on its side to make it easier to work on.

4. Disconnect the heatsink control cable from the system board.

5. Loosen the four captive screws that secure the heatsink to the system board.

6. Lift the heatsink from atop the processor and set it on its side to keep from contaminating the work area with thermal grease.

Removal and Replacement Procedures— Microtower (MT) Chassis

When reinstalling an existing heatsink, make sure that its bottom has been cleaned with an alcohol wipe and fresh thermal grease has been applied to the top of the processor. New heatsinks come from the factory with fresh thermal grease already applied.

Position the heatsink so that fan wiring is closest to the power supply. Check to ensure that the heatsink mounting lugs do not rest on any electrical components before tightening the retaining screws.

CAUTION: Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to

evenly seat the heatsink to the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board.

Service Reference Guide, dx2200 MT 415606-001 6–21

Removal and Replacement Procedures— Microtower (MT) Chassis

6.13 Processor

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel cover (Section 6.2, “Access Panel”).

3. Disconnect the heatsink control cable from the system board and remove the heatsink.(Section 6.12, “Heatsink”)

4. Rotate the processor locking lever to its full open position 1.

5. Raise and rotate the microprocessor retainer to its full open position 2.

6. Carefully lift the processor from the socket 3.

CAUTION: Do NOT handle the pins in the processor socket. These pins are very fragile and handling

them could cause irreparable damage. Once pins are damaged it may be necessary to replace the system board.

CAUTION: The heatsink must be installed within 24 hours of installing the processor to prevent damage

to the processor’s solder connections.

To install a new processor:

1. Place the processor in its socket and close the retainer.

2. Secure the locking lever.

If reusing the existing heatsink, go to step 3.

If using a new heatsink, go to step 6.

3. If reusing the existing heatsink, clean the bottom of the heatsink with the alcohol pad provided in the spares kit.

4. Apply the thermal grease provided in the spares kit to the top of the processor and install the heatsink atop the processor.

6–22 415606-001 Service Reference Guide, dx2200 MT

Removal and Replacement Procedures— Microtower (MT) Chassis

5. Go to step 7.

6. If using a new heatsink, remove the protective covering from the bottom of the heatsink and place it in position atop the processor.

7. Secure the heatsink to the system board and system board tray with the 4 captive screws and attach the heatsink control cable to the system board.

CAUTION: Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to

evenly seat the heatsink on the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board.

After installing a new processor onto the system board, always update the system ROM to ensure

✎

that the latest version of the BIOS is being used on the computer. The latest system ROM BIOS can be found on the Web at: http:\\h18000.www1.hp.com/support/files.

Service Reference Guide, dx2200 MT 415606-001 6–23

Removal and Replacement Procedures— Microtower (MT) Chassis

6.14 System Board

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Remove the front bezel (Section 6.3, “Front Bezel”).

4. Disconnect the power, and data cables from the back of all installed drives.

5. Disconnect all cables from the system board.

6. Remove the heatsink from the system board (Section 6.12, “Heatsink”).

7. Remove the 6 screws that secure the system board to the chassis 1.

8. Slide the system board towards the front of the chassis 2 then remove it 3.

The system board in the computer may look slightly different from the one shown here.

✎

To install the system board, reverse the removal procedure.

After installing a new system board, always update the system ROM to ensure that the latest

✎

version of the BIOS is being used on the computer. The latest system ROM BIOS can be found on the Web at: http:\\h18000.www1.hp.com/support/files.

6–24 415606-001 Service Reference Guide, dx2200 MT

6.15 Battery

The battery that comes with your computer provides power to the real-time clock and has a lifetime of about three years. When replacing the battery, use a battery equivalent to the battery originally installed on the computer. The computer comes with a 3-volt lithium coin cell battery.

The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall

✎

socket. The lithium battery is only used when the computer is NOT connected to AC power.

WARNING: This computer contains an internal lithium manganese dioxide battery. There is a risk of fire and

burns if the battery is not handled properly. To reduce the risk of personal injury:

■ Do not attempt to recharge the battery.

■ Do not expose to temperatures higher than 140°F (60°C)

■ Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or

water.

■ Replace the battery only with the HP/Compaq spare designated for this product.

CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When

the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Troubleshooting Guide for information on backing up the CMOS settings.

Removal and Replacement Procedures— Microtower (MT) Chassis

Batteries, battery packs, and accumulators should not be disposed of together with the general

household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP/Compaq, their authorized partners, or their agents.

CAUTION: 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.

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the right access panel (Section 6.2, “Access Panel”).

It may be necessary to remove an expansion card to gain access to the battery.

✎

3. Locate the battery and battery holder on the system board.

Service Reference Guide, dx2200 MT 415606-001 6–25

Removal and Replacement Procedures— Microtower (MT) Chassis

6.15.1 Type 1 Battery Holder

1. Lift the battery out of its holder.

2. Slide the replacement battery into position, positive side up.

3. The battery holder automatically secures the battery in the proper position.

4. Replace the computer access panel.

5. Plug in the computer and turn on power to the computer.

6. Reset the date and time, your passwords, and any special system setups, using Computer

Setup. Refer to the Computer Setup (F10) Utility Guide.

6–26 415606-001 Service Reference Guide, dx2200 MT

6.15.2 Type 2 Battery Holder

1. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery. When the battery pops up, lift it out 1.

2. To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the positive side up 2. Push the other edge down until the clamp snaps over the other edge of the battery.

Removal and Replacement Procedures— Microtower (MT) Chassis

3. Replace the computer access panel.

4. Plug in the computer and turn on power to the computer.

5. Reset the date and time, your passwords, and any special system setups, using Computer

Setup. Refer to the Computer Setup (F10) Utility Guide.

Service Reference Guide, dx2200 MT 415606-001 6–27

Removal and Replacement Procedures— Microtower (MT) Chassis

6.15.3 Type 3 Battery Holder

1. Pull back on the clip 1 that holds the battery in place, then remove the battery 2.

2. Insert the new battery and position the clip back in place.

3. Replace the computer access panel.

4. Plug in the computer and turn on power to the computer.

5. Reset the date and time, your passwords, and any special system setups, using Computer

Setup. Refer to the Computer Setup (F10) Utility Guide.

6–28 415606-001 Service Reference Guide, dx2200 MT

6.16 Power Supply

WARNING: Voltage is always present on the system board when the computer is plugged into an

active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be disconnected from the computer and/or the AC outlet before opening the computer.

1. Prepare the computer for disassembly (Section 6.1, “Preparation for Disassembly”).

2. Remove the access panel (Section 6.2, “Access Panel”).

3. Disconnect all power cables from the mass storage devices and from the system board.

4. Remove the 4 screws 1 that secure the power supply to the chassis.

5. Slide the power supply toward the front of the computer 4, then lift it out of the computer.

Removal and Replacement Procedures— Microtower (MT) Chassis

To install the power supply, reverse the removal procedure.

Service Reference Guide, dx2200 MT 415606-001 6–29

Removal and Replacement Procedures— Microtower (MT) Chassis

6–30 415606-001 Service Reference Guide, dx2200 MT

This appendix contains the pin assignments for many computer and workstation connectors. Some of these connectors may not be used on the product being serviced.

Enhanced Keyboard

Connector and Icon Pin Signal

Connector Pin Assignments

Mouse

Connector and Icon Pin Signal

Ethernet RJ-45

Connector and Icon Pin Signal

1 2 3

4 5 6

1 2 3

4 5 6

1 2 3 4

Data Unused Ground

+5 VDC Clock Unused

Data Unused Ground

+5 VDC Clock Unused

(+) Transmit Data (-) Transmit Data (+) Receive Data Unused

5 6 7 8

Service Reference Guide, dx2200 MT 415606-001 A–1

Unused (-) Receive Data Unused Unused

Connector Pin Assignments

Parallel Interface

Connector and Icon

Pin Signal Pin Signal Pin Signal

1 2 3

4 5 6

Strobe Data Bit 0 Data Bit 1

Data Bit 2 Data Bit 3 Data Bit 4

7 8 9

10 11 12

Data Bit 5 Data Bit 6 Data Bit 7

Acknowledge Busy Paper End

Serial Interface, Powered and Non-Powered

Connector and Icon Pin Signal

1 2 3

4 5 6

7 8 9

USB

Connector and Icon Pin Signal

13 14 15

16 17 18-25

Select Auto Linefeed Error

Initialize Printer Select IN Signal Ground

Carrier Detect (12V if powered) Receive Data Transmit Data

Data Terminal Ready Signal Ground Data Set Ready

Request to Send Clear to Send Ring Indicator (5V if powered)

1 2 3 4

+5 VDC

- Data + Data Ground

Microphone

Connector and Icon (1/8" miniphone) Pin Signal

1 (Tip) Audio

A–2 415606-001 Service Reference Guide, dx2200 MT

2 (Ring) Power

3 (Shield) Ground

Headphone

Connector and Icon (1/8" miniphone) Pin Signal

1 (Tip) Audio_Left

2 (Ring) Audio_Right

3 (Shield) Ground

Line-In Audio

Connector and Icon (1/8" miniphone) Pin Signal

1 (Tip) Audio_In_Left

2 (Ring) Audio_In_Right

3 (Shield) Ground

Line-Out Audio

Connector and Icon (1/8" miniphone) Pin Signal

1 (Tip) Audio_Out_Left

2 (Ring) Audio_Out_Right

Connector Pin Assignments

3 (Shield) Ground

Monitor

Connector and Icon

Pin Signal Pin Signal Pin Signal

1 2 3

4 5

Red Analog Green Analog Blue Analog

Not used Ground

6 7 8

9 10

Ground Ground Ground

+5V DC (fused) Ground

11 12 13

14 15

Not used DDC Serial Data Horizontal Sync

Vertical Sync DDC Serial Clock

Service Reference Guide, dx2200 MT 415606-001 A–3

Connector Pin Assignments



ATA/ATAPI (IDE) Standard Drive Cable

Connector

Pin Signal Pin Signal Pin Signal

1 2 3 4 5

6 7 8 9 10

11 12 13 14

Reset Ground DD7 DD8 DD6

DD9 DD5 DD10 DD4 DD11

DD3 DD12 DD2 DD13

24-Pin Power

15 16 17 18 19

20 21 22 23 24

25 26 27 28

DD1 DD14 DD0 DD15 Ground

(Key) DMARQ Ground DIOW Ground

DIOR Ground IORDY CSEL

Connector

29 30 31 32 33

34 35 36 37 38

39 40

DMAK Ground INTRQ IOCS16 DA1

PDIAG (cable detect) DA0 DA2 CS1FX CS3FX

DASP Ground

Pin Signal Pin Signal Pin Signal Pin Signal

GND

+3.3 V

Aux GND

+3.3 V

GND

+5 V

GND

+5 V

7 8 9 10 11 12

PWROK +5 Vaux +12 V +12 V +3.3 V

13 14 15 16 17 18

-12 V GND PSON GND GND/(R/S)

19 20 21 22 23 24

NI +5 V +5 V +5V GND

*Open for d300 series computers; -5V for all others

4-Pin Power (for CPU)

Connector and Icon Pin Signal

1GND

2GND

3+12 V

4+12 V

A–4 415606-001 Service Reference Guide, dx2200 MT

The voltage select switch feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC.

The power cord set received with the computer meets the requirements for use in the country where you purchased the equipment.

Power cord sets for use in other countries must meet the requirements of the country where you use the computer. For more information on power cord set requirements, contact your authorized HP dealer, reseller, or service provider.

General Requirements

The requirements listed below are applicable to all countries:

1. The length of the power cord set must be at least 1.8 m (6.00 feet) and a maximum of 3.0 m (9.75 feet.)

2. All power cord sets must be approved by an acceptable accredited agency responsible for evaluation in the country where the power cord set will be used.

Power Cord Set Requirements

3. The power cord set must have a minimum current capacity of 10A and a nominal voltage rating of 125 or 250 volts AC, as required by each country’s power system.

4. The appliance coupler must meet the mechanical configuration of an EN 60 320/IEC 320 Standard Sheet C13 connector, for mating with appliance inlet on the Switch Box.

Service Reference Guide, dx2200 MT 415606-001 B–1

Power Cord Set Requirements

Country-Specific Requirements

Additional requirements specific to a country are shown in parentheses and explained below.

Accrediting

Country

Australia (1) Austria (1) Belgium (1) Canada (2)

Denmark (1) Finland (1) France (1) Germany (1)

Agency Country

EANSW OVE CEBC CSA

DEMKO SETI UTE

Italy (1) Japan (3) Norway (1) Sweden (1)

Switzerland (1) United Kingdom (1) United States (2)

VDE

1. The flexible cord must be <HAR> Type HO5VV-F, 3-conductor, 1.0 mm

Accrediting

Agency

IMQ METI NEMKO SEMKO

SEV BSI UL

conductor size. Power cord set fittings (appliance coupler and wall plug) must bear the certification mark of the agency responsible for evaluation in the country where it will be used.

2. The flexible cord must be Type SJT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A 250V) configuration.

3. Appliance coupler, flexible cord, and wall plug must bear a "T" mark and registration number in accordance with the Japanese Dentori Law. Flexible cord must be Type VCT or

VCTF, 3-conductor, 1.0 mm

conductor size. Wall plug must be a two-pole grounding type

with a Japanese Industrial Standard C8303 (7A, 125V) configuration.

B–2 415606-001 Service Reference Guide, dx2200 MT

POST Error Messages

An error message results if the Power-On Self-Test (POST) encounters a problem. This test runs when the system is turned on, checking assemblies within the computer and reporting any errors found.

Not all computers use all of the codes listed.

Recommended Actions are to be taken in incremental steps. Perform one step at a time and continue only if the action does not cure the problem.

POST Error Messages

Screen Message Probable Cause Recommended Action

Gate 20 Error BIOS cannot access

memory over 1MB.

Parity Error Fatal memory parity

error. System halts after displaying this message.

Boot Failure... BIOS could not boot from

the device. This message is usually followed by information about the specific device.

Invalid Boot Diskette Diskette in drive A: not

bootable.

Drive Not Ready BIOS could not configure

drive A: during POST.

Drive A: Error BIOS could not configure

drive A: during POST.

Reseat memory modules. Replace memory modules.

Reseat the device data and power cables.

Replace the device data cable. Replace the device. Replace the system board.

Replace the diskette.

Reseat the device data and power cables.

Replace the device data cable. Replace the device. Replace the system board.

Reseat the device data and power cables.

Replace the device data cable. Replace the device. Replace the system board.

Insert BOOT Diskette In A:BIOS could not find a

bootable diskette in drive A:.

Service Reference Guide, dx2200 MT 415606-001 C–1

Replace the diskette.

POST Error Messages

Screen Message Probable Cause Recommended Action

Primary Master/Slave Hard Disk Error

Secondary Master/ Slave Hard Disk Error

Primary Master/Slave Drive — ATAPI Incompatible

Secondary Master/ Slave Drive — ATAPI Incompatible

S.M.A.R.T. Capable but Command Failed.

S.M.A.R.T. Command Failed

Primary Master/Slave hard drive could not be initialized by the BIOS.

Secondary Master/Slave hard drive could not be initialized by the BIOS.

Device configured as a Primary/ Master/Slave failed an ATAPI compatibility test.

Device configured as a Secondary/ Master/ Slave failed an ATAPI compatibility test.

BIOS unable to send a S.M.A.R.T. message to the device.

Reseat the device data and power cables.

Replace the device data cable. Replace the device. Replace the system board.

Reseat the device data and power cables.

Replace the device data cable. Replace the device. Replace the system board.

Replace the device. Replace the system board.

Backup the data on the hard drive. Replace the hard drive.

S.M.A.R.T. Status Bad, Backup and replace.

S.M.A.R.T. Capable

S.M.A.R.T. capable hard drive detects an imminent failure.

and Status Bad.

DMA-1 Error DMA-2 Error

Error when initializing secondary DMA controller.

DMA Controller Error POST error while trying to

initialize the DMA controller.

Checking NVRAM...Update

BIOS could not write to the NVRAM block.

Failed

Backup the data on the hard drive, then replace the hard drive.

Reconnect the cables on the peripheral device.

Replace the data cable. Replace the device. Replace the system board.

Reconnect the cables on the peripheral device.

Replace the data cable. Replace the device. Replace the system board.

Change system board jumper on JP2 to pins 2-3 (Unlock), then flash the system BIOS. Reset the jumper to pins 1-2 (Lock).

Replace the system board.

C–2 415606-001 Service Reference Guide, dx2200 MT

POST Error Messages

Screen Message Probable Cause Recommended Action

Microcode Error BIOS could not find or

load the CPU microcode update to the CPU.

NVRAM Checksum Bad, NVRAM Cleared

Error detected while validating NVRAM data.

NVRAM Ignored NVRAM data used to

store plug and play data was not used for system configuration in POST.

NVRAM Bad NVRAM data used to

store plug and play data was not used for system configuration in POST.

Ensure the system board BIOS supports the processor.

Change system board jumper on JP2 to pins 2-3 (Unlock), then flash the system BIOS. Reset the jumper to pins 1-2 (Lock).

Restart the computer, use the F10 Key to access Computer Setup. Select Load Default Settings > Save and Exit.

Change system board jumper on JP2 to pins 2-3 (Unlock), then flash the system BIOS. Reset the jumper to pins 1-2 (Lock).

Replace the system board.

Restart the computer, use the F10 Key to access Computer Setup. Select Load Default Settings > Save and Exit.

Change system board jumper on JP2 to pins 2-3 (Unlock), then flash the system BIOS. Reset the jumper to pins 1-2 (Lock).

Replace the system board.

Timer Error Error found while

Replace the system board. programming the count register of channel 2 of the 8254 timer.

Interrupt Controller-1 Error

BIOS POST could not initialize the Master/

Replace the system board.

Slave Interrupt controller.

CMOS Date/Time Not Set

CMOS Date and/or Time is invalid.

Set the date and time under Control

Panel or in F10 Setup depending on

the operating system.

If problem persists, replace the RTC

battery.

CMOS Battery Failed CMOS battery failed. Replace the RTC battery.

CMOS Battery Low CMOS battery weak. Replace the RTC battery.

CMOS Settings Wrong Invalid CMOS settings. Restart the computer, use the F10 Key to

access Computer Setup. Select Load

Default Settings > Save and Exit.

CMOS Checksum Bad CMOS contents failed the

Checksum check.

Restart the computer, use the F10 Key to

access Computer Setup. Select Load

Default Settings > Save and Exit.

Service Reference Guide, dx2200 MT 415606-001 C–3

POST Error Messages

Screen Message Probable Cause Recommended Action

CMOS Checksum Error. Defaults Loaded

ROM BIOS Checksum Error - system halted

Keyboard/Interface Error

Keyboard Error or No Keyboard Present

CMOS corrupt or bad RTC battery.

ROM BIOS may be corrupted.

Keyboard controller failure.

Keyboard not present or system not responding when keyboard controller is initialized.

Press F1 to save defaults.

Replace RTC battery.

Download the current ROM BIOS from

the HP Web and reflash the ROM BIOS.

Download the most current ROM BIOS

from the Web and reflash the system

ROM.

Reconnect keyboard with computer

turned off.

Check connector for bent or missing

pins.

Ensure that none of the keys are

depressed.

Replace keyboard.

Replace system board.

Reconnect keyboard with computer

turned off.

Check connector for bent or missing

pins.

Ensure that none of the keys are

depressed.

Replace keyboard.

Replace system board.

Hard Disk Install Failure Cannot find or initialize

the hard drive.

Memory Test Failure If POST detects an error

during memory testing, additional information appears about the type and location of the memory error.

Check Computer Setup (F10 Setup) for

presence of hard drive.

Check drive cable connections.

Replace hard drive.

Run Computer Setup (F10 Setup) or

Windows utilities.

Ensure memory modules are installed

correctly.

Verify proper memory module type.

Remove and replace memory modules

one at a time to isolate faulty module.

Replace the faulty memory module.

If error persists after replacing memory

module, replace the system board.

C–4 415606-001 Service Reference Guide, dx2200 MT

POST Error Messages

Screen Message Probable Cause Recommended Action

Non-System Disk or Disk Error

Warning: CPU Fan Has Failed. For Thermal Protection, System will be shut down. A 3 second long beep will be heard before the system will shut down.

Warning: Processor Fan Has Failed. For Thermal Protection, System will be shut down. A 3 second long beep will be heard before the system will shut down.

BIOS unable to find a suitable boot device.

CPU fan weak or not active.

Processor fan weak or not active.

Verify that the device booting from is

bootable. Replace as needed.

Ensure that the computer air vents are

not blocked and the chassis cooling fan

is running.

Open hood, press power button, and

see if the chassis fan spins. If the fan is

not spinning, make sure the fan's cable

is plugged onto the system board

header. Ensure the fan is fully/properly

installed.

If fan is plugged in but is not spinning

then, replace chassis fan.

Replace the chassis fan.

Ensure that the computer air vents are

not blocked and the processor cooling

fan is running.

Open hood, press power button, and

see if the processor fan spins. If the

processor fan is not spinning, make sure

the fan's cable is plugged onto the

system board header. Ensure the fan is

fully/properly seated or installed.

If fan is plugged in and seated properly,

but is not spinning, then replace

processor fan/heatsink assembly.

Contact an authorized reseller or service

provider.

POST Diagnostic Front Panel LEDs and Audible Codes

This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them.

If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the

✎

computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in which they should be

✎

performed.

Service Reference Guide, dx2200 MT 415606-001 C–5

POST Error Messages

POST Diagnostic Front Panel LEDs and Audible Codes

Activity Beeps Possible Cause Recommended Action

Green Power LED On.

Green Power LED flashes every two seconds.

Power LED flashes every 4 seconds. This continues until the issue has been resolved.

None Computer on. None

None Computer in

Suspend to RAM

None required. Press any key or move the

mouse to wake the computer. mode (some models only) or normal Suspend mode.

None Processor thermal

protection activated:

A fan may be blocked or not turning.

OR The heatsink-fan

assembly is not properly attached to the processor.

Ensure that the computer air vents are not

blocked and the processor cooling fan is

running.

Open hood, press power button, and see

if the processor fan spins. If the processor

fan is not spinning, make sure the fan's

cable is plugged onto the system board

header.

If fan is plugged in but is not spinning,

then replace processor fan.

Reseat processor heatsink and verify that

the fan assembly is properly attached.

Contact an authorized reseller or service

provider.

Power LED flashes five times, once every second, followed by a two second pause. LEDs continue until problem is solved.

None Pre-video memory

error.

Reseat DIMMs. Power on the system.

Replace DIMMs one at a time to isolate

the faulty module.

Replace third-party memory with HP

memory.

Replace the system board.

C–6 415606-001 Service Reference Guide, dx2200 MT

POST Error Messages

POST Diagnostic Front Panel LEDs and Audible Codes (Continued)

Activity Beeps Possible Cause Recommended Action

Power LED flashes six times, once every second, followed by a two second pause. LEDs continue until problem is solved.

Power LED flashes eight times, once every second, followed by a two second pause. LEDs continue until problem is solved.

System does not power on and LEDs are not flashing.

None Pre-video

graphics error.

None Invalid ROM

based on bad checksum.

None System unable to

power on.

For systems with a graphics card:

Reseat the graphics card. Power on the

system.

Replace the graphics card.

Replace the system board.

For systems with integrated graphics,

replace the system board.

Reflash the ROM with the latest BIOS

image. See the “ROM Flash” section of the

Desktop Management Guide on the

Documentation and Diagnostics CD.

Replace the system board.

Press and hold the power button for less

than 4 seconds. If the hard drive LED turns

green, then:

Check that the voltage selector, located on

the rear of the power supply, is set to the

appropriate voltage. Proper voltage

setting depends on your region.

Remove the expansion cards one at a time

until the LED light on the system board

turns on.

Replace the system board.

Press and hold the power button for less

than 4 seconds. If the hard drive LED does

not turn on green then:

Check that the unit is plugged into a

working AC outlet.

Open hood and check that the power

button harness is properly connected to

the system board.

Check that both power supply cables are

properly connected to the system board.

Check to see if the LED light on the system

board is turned on. If it is turned on, then

replace the power button harness.

If the LED light on the system board is not

turned on, then replace the power supply.

Replace the system board.

Service Reference Guide, dx2200 MT 415606-001 C–7

POST Error Messages

C–8 415606-001 Service Reference Guide, dx2200 MT

Memory

Computers equipped with Intel-based processors come with double data rate synchronous dynamic random access memory (DDR2-SDRAM) dual inline memory modules (DIMMs).

The memory sockets on the system board can be populated with up to two industry-standard DIMMs. These memory module slots are populated with at least one pre installed memory module. To achieve the maximum memory support, you can populate the system board with up to 2GB of memory configured in a high-performing dual channel mode.

For proper system operation, the computer supports DDR2-SDRAM DIMMs. The DIMMs must be industry-standard 240-pin, unbuffered PC2 5300 667 MHz- compliant, 1.9 volt DDR2SDRAM DIMMs. The DDR2-SDRAM DIMMs must also:

■ support CAS latency 4 (CL = 4) for PC2 5300 667 MHz

■ contain the mandatory JEDEC SPD information

In addition, the computer supports:

■ 256Mbit, 512Mbit, and 1 Gbit 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

■ The maximum operational speed is determined by the slowest DIMM in the system.

The system will not start if you install unsupported DIMMs.

✎

Service Reference Guide, dx2200 MT 415606-001 D–1

Memory

D–2 415606-001 Service Reference Guide, dx2200 MT

Troubleshooting Without Diagnostics

Preliminary Checklist

This section describes some simple, preliminary tests and guidelines for troubleshooting the computer without using the diagnostics.

■ Are the computer and monitor connected to a working electrical outlet?

■ Is the voltage select switch is set to the appropriate voltage for your region (115V or 230V)?

■ Is the computer turned on?

■ Is the green power light illuminated?

■ Is the monitor turned on?

■ Is the green monitor light illuminated?

■ Turn up the monitor brightness and contrast controls if the monitor is dim.

■ If the system has multiple video sources (embedded, PCI, or AGP adapters) installed

(embedded video on select models only) and a single monitor, the monitor must be plugged into the monitor connector on the source selected as the primary VGA adapter. During boot, the other monitor connectors are disabled and if the monitor is connected into these ports, the monitor will not function. You can select which source will be the default VGA source in Computer (F10) Setup.

■ Press and hold any key. If the system beeps, then the keyboard is operating correctly.

■ Check all cables for loose or incorrect connections.

■ Reconfigure the computer after installing a non–Plug and Play expansion board or other

option, such as a diskette drive.

■ Are all of the necessary device drivers installed?

■ Have all printer drivers been installed for each application?

■ Remove all diskettes from the diskette drives before you turn on the system.

■ Are all switches set correctly?

■ Is the NIC Remote Wakeup cable (featured on some models) connected between the NIC and

the riser/system board?

Service Reference Guide, dx2200 MT 415606-001 E–1

Troubleshooting Without Diagnostics

Solving Minor Problems

Problem Cause Possible Solution

Computer appears locked up and will not turn off when the power button is pressed.

Computer will not respond to USB keyboard or mouse.

CAUTION: When attempting to resume from standby mode, do not hold down the power

button for more than four seconds. Otherwise, the computer will shut down and you will lose your data.

Computer date and time display is incorrect.

Computer appears to pause periodically.

Cursor will not move using the arrow keys on the keypad.

Software control of the power switch is not functional.

Computer is in standby mode.

RTC (real-time clock) battery may need to be replaced.

Network driver is loaded and no network connection is established.

The Num Lock key may be on.

1. Press and hold the power button for at least four seconds until the computer turns off.

2. Disconnect electrical plug from outlet.

Press the power button to resume from standby mode.

1. Reset the date and time under

Control Panel.

2. Replace the RTC battery.

Establish a network connection, or use Computer Setup or Microsoft Windows Device Manager to disable the network controller.

Press the Num Lock key. The Num Lock key can be disabled (or enabled) in Computer Setup.

Poor performance is experienced.

Processor is hot. 1. Ensure airflow to the computer is

not blocked. Leave a 10.2-cm (4-inch) clearance on all vented sides of the computer and monitor to permit required airflow.

2. Ensure the fans are connected and working properly (some fans only operate when needed).

3. Ensure the processor heatsink is installed properly.

Hard drive is full. Transfer data from the hard drive to

create more space on the hard drive.

E–2 415606-001 Service Reference Guide, dx2200 MT

Troubleshooting Without Diagnostics

Solving Minor Problems (Continued)

Problem Cause Possible Solution

Computer powered off automatically and the Power LED flashes every four seconds.

System does not power on and the LEDs on the front of the computer are not flashing.

Processor thermal protection activated:

A fan may be blocked or not turning.

OR The heatsink is not

properly attached to the processor.

System unable to power on.

1. Ensure computer air vents are not blocked and the cooling fan is running.

2. Open hood, press power button, and see if the processor fan spins. If not spinning, make sure the fan's cable is plugged onto the system board header. Ensure the fan is fully/properly seated or installed.

3. Replace the processor fan.

4. Reseat processor heatsink and verify that the fan assembly is properly attached.

Press and hold the power button for less than 4 seconds. If the hard drive LED turns green, then:

1. Check that the voltage selector is set to the appropriate voltage.

2. Remove the expansion cards one at a time until the 3.3 V_aux light on the system board turns on.

3. Replace the system board.

OR Press and hold the power button for

less than 4 seconds. If the hard drive LED does not turn on green then:

1. Check that the unit is plugged into a working AC outlet.

2. Open hood and check that the power button harness is properly connected to the system board.

3. Check that both power supply cables are properly connected to the system board.

4. If the 3.3 V_aux light on the system board is on, then replace the power button harness.

5. If the 3.3 V_aux light on the system board is off, then replace the power supply.

6. Replace the system board.

Service Reference Guide, dx2200 MT 415606-001 E–3

Troubleshooting Without Diagnostics

Solving Power Supply Problems

Problem Cause Solution

Power supply shuts down intermittently.

Voltage selector switch on rear of computer chassis not switched to correct line voltage.

Power supply fault. Replace the power supply.

Select the proper AC voltage.

Computer powered off automatically and the Power LED flashes every four seconds.

Processor thermal protection activated:

A fan may be blocked or not turning.

OR The heatsink/fan

assembly is not properly attached to the processor.

1. Ensure that the computer air vents are not blocked and the cooling fan is running.

2. Open hood, press the power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. Ensure the fan is fully/properly seated or installed.

3. Replace the processor fan.

4. Reseat processor heatsink and verify that the fan assembly is properly attached.

E–4 415606-001 Service Reference Guide, dx2200 MT

Solving Diskette Problems

Problem Cause Solution

Diskette drive light stays on. Diskette is damaged. In Microsoft Windows XP, right-click

Diskette is incorrectly inserted.

Troubleshooting Without Diagnostics

Start, click Explore, and select a drive. Select File > Properties > Tools. Under Error-checking, click Check Now.

Remove diskette and reinsert.

Drive button is not pushed in.

Files on diskette are damaged.

Drive cable is not properly connected.

Drive not found. Cable is loose. Reseat diskette drive data and

Removable drive is not seated properly.

You attempted to hot plug a removable hard drive that has DriveLock security enabled. (This feature supported on select models only.)

Diskette drive cannot write to a diskette.

Diskette is not formatted.

Diskette is writeprotected.

Writing to the wrong drive.

Not enough space is left on the diskette.

Diskette write control is enabled.

Push in drive button.

Check the program diskettes.

Reconnect power cable. Ensure that all four pins are connected.

power cables.

Reseat the drive.

Shut down the computer. Insert the drive into the MultiBay, if it is not already inserted. Turn on the computer.

Format the diskette.

Use another diskette or remove the write protection.

Check the drive letter in the path statement.

Use another diskette.

Use Computer Setup to check the storage security feature disabled settings.

Diskette is damaged. Replace the damaged disk.

Cannot format diskette. Invalid media reported. When formatting a disk in MS-DOS,

you may need to specify diskette capacity. For example, to format a

1.44-MB diskette, type the following command at the MS-DOS prompt:

FORMAT A: /F:1440

Service Reference Guide, dx2200 MT 415606-001 E–5

Troubleshooting Without Diagnostics

Solving Diskette Problems (Continued)

Problem Cause Solution

A problem has occurred with a disk transaction.

Diskette drive cannot read a diskette.

“Invalid system disk” message is displayed.

Cannot Boot to Diskette. Diskette is not bootable. Replace with a bootable diskette.

The directory structure is bad, or there is a problem with a file.

Diskette is not formatted.

You are using the wrong diskette type for the drive type.

You are reading the wrong drive.

Diskette is damaged. Replace the diskette with a new one.

A diskette that does not contain the system files needed to start the computer has been inserted in the drive.

Diskette error has occurred.

Diskette boot has been disabled in Computer Setup.

In Windows XP, right-click Start, click Explore, and select a drive.

Select File > Properties > Tools. Under Error-checking,

click Check Now.

Format the diskette.

Check the type of drive that you are using and use the correct diskette type.

Check the drive letter in the path statement.

When drive activity stops, remove the diskette and press the Spacebar. The computer should start up.

Restart the computer by pressing the power button.

Run Computer Setup and enable diskette boot in Storage > Boot Order.

Removable media boot has been disabled in Computer Setup.

Diskette MBR validation is enabled.

Solving Hard Drive Problems

Problem Cause Solution

Hard drive error occurs. Hard disk has bad

sectors or has failed.

Disk transaction problem. Either the directory

structure is bad or there is a problem with a file.

Run Computer Setup and enable Removable Media Boot in Storage > Storage Options.

Run Computer Setup and disable Diskette MBR Validation in Storage > Storage Options.

Use a utility to locate and block usage of bad sectors. If necessary, reformat the hard disk.

In Windows XP, right-click Start, click Explore, and select a drive. Select File > Properties > Tools. Under Error-checking, click Check Now.

E–6 415606-001 Service Reference Guide, dx2200 MT

Troubleshooting Without Diagnostics

Solving Hard Drive Problems (Continued)

Problem Cause Solution

Drive not found (identified). Loose cable. Check cable connections.

The system may not have automatically recognized a newly installed device.

1. Run Computer Setup.

2. If the system still does not recognize the new device, check to see if the device is listed within Computer Setup. If it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem.

3. If this is a newly installed drive, enter Setup and try adding a POST delay under Advanced > Power-On.

Nonsystem disk/NTLDR missing message.

Drive’s IDE (ATA) controller is disabled in Computer Setup.

Drive responds slowly immediately after power-up.

System is trying to start from a non bootable diskette.

System is trying to start from a damaged hard drive.

System files missing or not properly installed.

Run Computer Setup and enable the Primary and Secondary IDE (ATA) controllers in Storage > Storage Options.

Run Computer Setup and increase the POST Delay in Advanced > Power-On Options.

Remove the diskette from the diskette drive.

1. Insert a bootable diskette into the diskette drive and restart the computer.

2. If the hard drive is still inaccessible and MBR Security is enabled, try restoring the previously saved MBR image by entering Setup and selecting

Security > Restore Master Boot Record.

1. Insert a bootable system diskette and restart.

2. Verify hard drive is partitioned and formatted.

3. Install system files for the appropriate operating system if necessary.

Hard drive boot disabled in Computer Setup.

Service Reference Guide, dx2200 MT 415606-001 E–7

Run Computer Setup and enable the hard drive entry in the Storage > Boot Order list.

Troubleshooting Without Diagnostics

Solving Hard Drive Problems (Continued)

Problem Cause Solution

Computer will not start. Hard drive is damaged. Observe the beeps and LED lights

Computer seems to be locked up.

Program in use has stopped responding to commands.

on the front of the computer. See

Appendix C, “POST Error Messages”.

1. Attempt the normal Windows “Shut Down” procedure.

2. Press the power button for four or more seconds to turn off the power.

3. Restart the computer using the power button.

E–8 415606-001 Service Reference Guide, dx2200 MT

Solving Display Problems

Problem Cause Solution

Blank screen (no video). The cable connections

are not correct.

Screen blanking utility installed or energy saver features enabled.

Troubleshooting Without Diagnostics

Check the cable connections from the monitor to the computer and to the electrical outlet.

Press any key or click the mouse button and, if set, type your password.

System ROM is bad; system is running in FailSafe Boot Block mode (indicated by eight Power LED flashes).

Fixed-sync monitor will not sync at the resolution chosen.

Computer is in

standby mode.

CAUTION: When attempting to resume from standby mode, do not hold down the

power button for more than four seconds. Otherwise, the computer will shut down and you will lose your data.

Monitor cable plugged into the wrong connector.

Monitor settings in the computer are not compatible with the monitor.

Reflash the ROM using a ROMPaq diskette.

Ensure that the monitor can accept the same horizontal scan rate as the resolution chosen.

Press the power button to resume from standby mode.

If the computer system has both an integrated graphics connector and an AGP card connector, plug the monitor cable into the AGP card connector.

1. Restart the computer and press F8 during startup when you see “Press F8” in the bottom right corner of the screen.

2. Using the keyboard arrow keys, select Enable VGA Mode and press Enter.

3. In Windows Control Panel, double-click the Display icon and select the Settings tab.

4. Use the sliding control to reset the resolution.

Service Reference Guide, dx2200 MT 415606-001 E–9

Troubleshooting Without Diagnostics

Solving Display Problems (Continued)

Problem Cause Solution

Power LED flashes Red six times, once every second,

Pre-video graphics

error. followed by a two second pause.

Monitor does not function properly when used with energy saver features.

Monitor without energy

saver capabilities is

being used with energy

saver features enabled.

Dim characters. The brightness and

contrast controls are not

set properly.

Cables are not properly

connected.

Blurry video or requested resolution cannot be set.

If the graphics controller

was upgraded, the

correct video drivers

may not be loaded.

Monitor is not capable

of displaying requested

resolution.

For systems with a graphics card:

1. Reseat the graphics card.

2. Replace the graphics card.

3. Replace the system board.

For systems with integrated graphics, replace the system board.

Disable monitor energy saver feature.

Adjust the monitor brightness and contrast controls.

Check that the graphics cable is securely connected to the graphics card and the monitor.

Install the video drivers included in the upgrade kit.

Change requested resolution.

The picture is broken up, rolls, jitters, or flashes.

Vibrating or rattling noise coming from inside a CRT monitor when powered on.

Clicking noise coming from inside a CRT monitor.

The monitor connections

may be incomplete or

the monitor may be

incorrectly adjusted.

Monitor needs to be

degaussed.

Monitor degaussing coil

has been activated.

Electronic relays have

been activated inside

the monitor.

1. Be sure the monitor cable is securely connected to the computer.

2. In a two-monitor system or if another monitor is in close proximity, be sure the monitors are not interfering with each other’s electromagnetic field by moving them apart.

3. Fluorescent lights or fans may be too close to the monitor.

Degauss the monitor.

None. It is normal for the degaussing coil to be activated when the monitor is powered on.

None. It is normal for some monitors to make a clicking noise when turned on and off, when going in and out of standby mode, and when changing resolutions.

E–10 415606-001 Service Reference Guide, dx2200 MT

Solving Display Problems (Continued)

Problem Cause Solution

Troubleshooting Without Diagnostics

High pitched noise coming from inside a flat panel monitor.

Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to center the picture on the screen. (flat panel monitors using an analog VGA input connection only)

Certain typed symbols do not appear correct.

Brightness and/or contrast settings are too high.

Flat panel monitor’s internal digital conversion circuits may be unable to correctly interpret the output synchronization of the graphics card.

The font you are using does not support that particular symbol.

Lower brightness and/or contrast settings.

1. Select the monitor’s AutoAdjustment option in the monitor’s on-screen display menu.

2. Manually synchronize the Clock and Clock Phase on-screen display functions. Download SoftPaq SP20930 or SP22333, depending on the monitor, to assist with the synchronization.

NOTE: Use the monitor model number when searching for the SoftPaq.

Use the Character Map to locate the and select the appropriate symbol. Click Start > All Programs >

Accessories > System Tools > Character Map. You can copy

the symbol from the Character Map into a document.

Service Reference Guide, dx2200 MT 415606-001 E–11

Troubleshooting Without Diagnostics

Solving Audio Problems

Problem Cause Solution

Sound does not come out of the speaker or headphones.

Software volume control is turned down.

The external speakers are not turned on.

Double-click the Speaker icon on the taskbar and use the volume slider to adjust the volume.

Turn on the external speakers.

External speakers plugged into the wrong audio jack.

Audio cable not connected.

Digital CD audio is not enabled.

Headphones or devices connected to the lineout connector mute the internal speaker.

Volume is muted. 1. From the Control Panel

Computer is in standby mode.

See the sound card documentation for proper speaker connection.

Connect audio cable between CD or DVD-ROM drive and the system board.

Enable digital CD audio:

1. From the Control Panel, select System.

2. On the Hardware tab, click the Device Manager button.

3. Right-click on the CD/DVD device and select Properties.

4. On the Properties tab, make sure “Enable digital CD

audio for this CD-ROM device” is checked.

Turn on and use headphones or external speakers, if connected, or disconnect headphones or external speakers.

program, click Sound,

Speech and Audio Devices, then click Sounds and Audio Devices.

2. Click the Mute check box to remove the check mark from the box.

Press the power button to resume from standby mode.

CAUTION: When attempting to resume from standby mode, do not hold down the

power button for more than four seconds. Otherwise, the computer will shut down and you will lose your data.

E–12 415606-001 Service Reference Guide, dx2200 MT

HP Compaq dx2200 Service and Maintain

Specifications and Main Features

Frequently Asked Questions

User Manual