HP COMPAQ D260 User Manual

service reference guide

Business Desktop d260 Series

1st Edition

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

Document Part Number 377977-AA1

Service Reference Guide

Business Desktop d260 Series

1st Edition

Document Part Number: 377977-AA1

November 2004

© 2004 Hewlett-Packard Development Company, L.P.

HP, Hewlett Packard, and the Hewlett-Packard logo are trademarks of Hewlett-Packard Company in the U.S. and
other countries.

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

Intel, Pentium, Intel Inside, and Celeron are trademarks of Intel Corporation in the U.S. and other countries.

Adobe, Acrobat, and Acrobat Reader are trademarks or registered trademarks of Adobe Systems Incorporated.

All other product names mentioned herein may be trademarks of their respective companies.

Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein or for
incidental or consequential damages in connection with the furnishing, performance, or use of this material. The
information in this document is provided “as is” without warranty of any kind, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose, and is subject to change without notice.
The warranties for HP products are set forth in the express limited warranty statements accompanying such
products. Nothing herein should be construed as constituting an additional warranty.

This document contains proprietary information that is protected by copyright. No part of this document may be
photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard
Company.

Product of the United States.

WARNING: Text set off in this manner indicates that failure to follow directions could result in bodily

Å

harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to

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equipment or loss of information.

Service Reference Guide

Business Desktop d260 Series

First Edition (November 2004)
Document Part Number: 377977-AA1

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 (F10) Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4

2.3 Protecting the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7

3 Desktop Management

3.1 Software Updating and Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

3.1.1 Dual-State Power Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

3.1.2 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1

3.1.3 HP Support Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2

3.2 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.2.1 Password Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.2.2 Establishing a Setup Password Using Computer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

3.2.3 Establishing a Power-On Password Using Computer Setup . . . . . . . . . . . . . . . . . . . . . . . 3–3

4 Ultra ATA Drive Guidelines and Features

4.1 Ultra ATA Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

4.2 Ultra ATA Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

4.2.1 Cable Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

4.3 Drive Installation Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2

4.3.1 Device Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3

4.3.2 Attach Sequence Rules by Class Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3

4.3.3 Attach Sequence Worksheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–4

4.3.4 Additional Drive Application Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–6

4.4 SMART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–6

4.5 Drive Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–7

5 Identifying the Chassis, Routine Care, and Disassembly Preparation

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

5.1.1 Microtower Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5

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

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

5.3.5 Cleaning the Mouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6

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

Contents

6 Removal and Replacement Procedures - Microtower Type 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 Diskette Drive Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–5

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

6.6 Expansion Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–8

6.7 Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–9

6.7.1 Drive Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–9

6.7.2 Removing a 5.25” Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–10

6.7.3 Removing a Diskette Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–11

6.7.4 Removing a 3.5” Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–11

6.8 Front USB Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–13

6.9 Processor and Heatsink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–15

6.10System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–17

6.11Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–18

6.11.1Type 1 Battery Holder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–19

6.11.2Type 2 Battery Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–20

6.12Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–21

Service Reference Guide, d260 377977-AA1 iv

A Connector Pin Assignments

B Power Cord Set Requirements

C POST Error Messages

D Troubleshooting Without Diagnostics

E Memory

F System Specifications

Index

Contents

Service Reference Guide, d260 377977-AA1 v

Contents

vi 377977-AA1 Service Reference Guide, d260

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 Software

The Microsoft Windows XP Home or Windows XP Professional operating system is the
supported OS. All software including OS will be 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

Additional HP software may be required in certain situations.

✎

1–2 377977-AA1 Service Reference Guide, d260

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

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 and SCSI mass storage devices

■ Processors

■ Controllers

If the Power-On Password is set, a key icon appears on the screen while POST is running. You

✎

will need to enter the password before continuing. Refer to Chapter 3, Section
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.”

3.2 for

Service Reference Guide, d260 377977-AA1 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 LS-120 drives.

■ Configure the boot priority of IDE (ATA) and SCSI hard drive controllers.

■ 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 power-on password prompting during system restarts (warm boots) as well as during

power-on.

■ Establish a setup 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.

■ Enable or disable removable media write ability (when supported by hardware).

■ 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
the Computer.

2. Press the F10 key as soon as the monitor light turns green or the computer starts to boot.

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. A choice of ten headings appears in the Computer Setup Utilities menu.

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

2–2 377977-AA1 Service Reference Guide, d260

Esc.

Enter. To return to the Computer Setup

Setup Utilities and Diagnostics Features

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

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

❏ To reset to factory settings, select Load Default Settings. This option will restore the

original factory system defaults.

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

Ä

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, d260 377977-AA1 2–3

Setup Utilities and Diagnostics Features

2.2.2 Computer Setup (F10) Utility

.

Computer

Setup

Heading Option Description

System
Information

Standard
CMOS Setup

None List:

System time
(hh/mm/ss)

Sets the system time (24 hour format).

• Serial Number

•Product Name

•Chipset

•Bios Version

•Bios Release Date

•Processor Type

•Processor Speed

•CPU ID

• L1 and L2 Cache Size

•Memory Information

• Ownership TAG

•FSB speed

• UUID

• Chassis Serial Number

• Asset TAG Number

•Integrated MAC

System date
(mm/dd/yyyy)

Floppy drive A Calculates the size and capacity of the floppy drive.

Primary IDE
Master

Primary IDE Slave Auto detects which hard drive is the primary slave drive.

Secondary IDE
Master

Secondary IDE
Slave

Halt On This category determines whether or not the computer will stop

Advanced
CMOS Setup

2–4 377977-AA1 Service Reference Guide, d260

Boot Device
Priority

Sets the system date.

Auto detects which hard drive is the primary master drive.

Auto detects which hard drive is the secondary master drive.

Auto detects which hard drive is the secondary slave drive.

if an error is detected during powering up.

Specifies the boot order for all devices.

Setup Utilities and Diagnostics Features

Computer

Setup

Heading Option Description

Post Delay Time
(in seconds)

Sets the amount of time before the setup Utility prompt
(F10=setup) appears when the computer boots.

• None: POST Delay Time disable (Default)

• 5: POST Delay 5 seconds

• 10: POST Delay 10 seconds

• 15: POST Delay 15 seconds

• 20: POST Delay 20 seconds

System Keyboard Detects if a keyboard is present when the Computer boots.

Absent: keyboard not detected (Default)
Present: keyboard detected

Internal Graphic
Mode Select

Selects the size of memory for internal graphic adapter.

•1MB: Share 1MB

•8MB: Share 8MB (Default)

• 16MB: Share 16MB

Quick Power On
Self Test

Enable this item to shorten the power on testing (POST) and
have your system, start up faster. The available setting values
are: Disabled and Enabled.

Boot Other Device With this function set to Enabled, the system will boot from some

other devices if the first/second/third boot devices failed.

Power
management

Boot Up NumLock
Status

Add-On ROM
Display mode

ACPI Standby
State setup

Restore on
AC/Power loss

Resume on PME

wake on alarm
item

This item defines if the keyboard Num Lock key is active when
your system is started.

Sets the ACPI Standby State when system goes into ACPI
standby Mode.

•S1/POS: Power on Suspend

•S3/STR: Suspend to RAM(Default)

Sets the system status after AC power loss.

• Power off: system always powers Off (default)

• Power on: system always powers

• Last state: system returns to the last state before AC power
loss.

Sets the resume on PME from soft off

• Disable: PME resume disable

• Enable: PME resume enable (Default)

Service Reference Guide, d260 377977-AA1 2–5

Setup Utilities and Diagnostics Features

Computer

Setup

Heading Option Description

Password
Option

System Shutdown
Temperature

CPU Temperature Detects current CPU temperature.

System
Temperature

CPU FAN Speed Detects CPU fan speed.

CPU VID Detects current CPU voltage.

Vccp Detects current Vccp voltage.

+1.5V Detects current ATX power +1.5V.

+3.3V Detects current ATX power +3.3V.

+5.0V Detects current ATX power +5.0V.

+12.0V Detects current ATX power +12.0V.

CPU Fan Fault
Detect

Set Supervisor
Password

Password Status Shows password status.

Password Check Allows you to set the password check when the supervisor

System will shutdown when system temperature is greater than
95°C/203°F.

Detects current system temperature.

The current speed of the CPU fan will be automatically detected
by the system.

Allows you to set and change the supervisor password.

password is set up.

• Setup: Password prompt appears when BIOS is executed.

• Always: Password verification is checked every time the
computer boots (default).

Load Default
Settings

Save Settings
and Exit

Exit Without
Savings

None Loads the optimal default values for all the setup options.

None Saves changes and exits setup.

None Allows you to exit setup without saving any changes.

2.3 Protecting the Software

To protect software from loss or damage, you should keep a backup copy of all system software,
applications, and related files stored on the hard drive. See the operating system or backup utility
documentation for instructions on making backup copies of data files.

Service Reference Guide, d260 377977-AA1 2–7

Setup Utilities and Diagnostics Features

2–8 377977-AA1 Service Reference Guide, d260

Desktop Management

3.1 Software Updating and Management

3.1.1 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.

3

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;

Ä

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

3.1.2 Power Management

Power Management is a feature that saves energy by shutting down certain components of the
computer when they are not in use, 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 > Performance

and Maintenance > 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.

Service Reference Guide, d260 377977-AA1 3–1

HP

http://www.hp.com\in.

http://www.hp.com.cn (China) or

Desktop Management

3.2 Security

3.2.1 Password Security

The power-on 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
setup password specifically prevents unauthorized access to Computer Setup, and can also be
used as an override to the power-on password. That is, when prompted for the power-on
password, entering the setup password instead will allow access to the computer.

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.

3.2.2 Establishing a Setup Password Using Computer Setup

Establishing a setup 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

the Computer.

2. Press the F10 key as soon as the monitor light turns green. Press Enter to bypass the title

screen, if necessary.

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 Security, then select Setup Password and follow the instructions on the screen.

4. Before exiting, click File > Save Changes and Exit.

3.2.3 Establishing a Power-On Password Using Computer Setup

Establishing a power-on password through Computer Setup prevents access to the computer
when power is turned on, unless the password is entered. When a power-on 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

the Computer.

2. Press the F10 key as soon as the monitor light turns green or the computer starts to boot.

Press

Enter to bypass the title screen, if necessary.

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 Security, then Power-On Password and follow the instructions on the screen.

4. Before exiting, click File > Save Changes and Exit.

Service Reference Guide, d260 377977-AA1 3–3

Desktop Management

Entering a Power-On Password

To enter a power-on password, complete the following steps:

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

the Computer.

2. When the key icon appears on the monitor, type your current password, then press Enter.

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

✎

If you enter the password incorrectly, a broken key icon appears. Try again. After three
unsuccessful tries, you must turn off the computer, then turn it on again before you can continue.

Entering a Setup Password

If a setup 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

the Computer.

2. Press the F10 key as soon as the monitor light turns green or the computer starts to boot.

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. When the key icon appears on the monitor, type the setup password, then press the Enter

key.

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

✎

If you enter the password incorrectly, a broken key icon appears. Try again. After three
unsuccessful tries, you must turn off the computer, then turn it on again before you can continue.

Changing a Power-On or Setup Password

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

2. When the key icon appears, type your current password, a slash (/) or alternate delimiter
character, your new password, another slash (/) or alternate delimiter character, and your new
password again as shown:

current password/new password/new password

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

✎

3. Press the Enter key.

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

Refer to the “National Keyboard Delimiter Characters” section in this chapter for information

✎

about the alternate delimiter characters.
The power-on password and setup password may also be changed using the Security options in
Computer Setup.

3–4 377977-AA1 Service Reference Guide, d260

Desktop Management

Deleting a Power-On or Setup Password

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

2. When the key icon appears, type your current password followed by a slash (/) or alternate
delimiter character as shown:

current password/

3. Press the Enter key.

The power-on password and setup password may also be changed using the Security options in

✎

Computer Setup.

Clearing Passwords

If you forget your password, you cannot access the computer. To clear the password, turn off and
unplug the computer then, set the Clear CMOS jumper to pin 1-2, then connect the Clear CMOS
jumper to pin 2-3 to Normal mode. Close and restart the computer.

Service Reference Guide, d260 377977-AA1 3–5

Desktop Management

3–6 377977-AA1 Service Reference Guide, d260

Ultra ATA Drive Guidelines and Features

4.1 Ultra ATA Jumpers

Ultra ATA drives are configured by means of jumper settings. Factory-installed drives ship with
the jumpers preset to the cable-select mode; therefore, no jumper setting changes are required on
factory pre installed, replacement, or option drives. With cable-select, the drive is configured as
either Master (Drive/Device 0) or Slave (Drive/Device 1) by its physical attachment to the cable.

If you purchase a third-party hard drive, refer to the documentation included with the drive kit to
ensure proper cable installation and configuration.

All drives on a controller channel need to have their jumpers either in the cable-select mode or

✎

have the individual drive jumper installed on the appropriate Master (Drive/Device 0) or Slave
(Drive/Device 1) position.

4.2 Ultra ATA Cables

4

When installing a second device on either the primary or secondary controller, you must use an
industry standard 80-conductor Ultra ATA cable for optimal performance. These cables have a
maximum length of 18 inches and a maximum distance of 6 inches between the two devices for a
two-drive cable.

Drives operating at speeds faster than those of the Ultra ATA-33 devices require
industry-standard 40-pin, 80-conductor cables to maintain the higher data transfer rates possible
with the improved technology.

When using Ultra ATA-133, -100, -66, and slower -33 drives in the same system, each drive will
operate at its appropriate data transfer rate.

4.2.1 Cable Layout

The faces of industry-standard cable connectors are color coded for easy recognition:

■ System board connector = blue face

■ Device 0 connector = black face

■ Device 1 connector = gray face

The color code of an industry-standard cable is valid only if the drive’s jumper is in the

✎

cable-select position.

Service Reference Guide, d260 377977-AA1 4–1

Ultra ATA Drive Guidelines and Features

Single-Drive Cable

System

Board

Blue
Face

Device 0

(master)

Black

Face

Two-Drive Cable

System

Board

Blue
Face

On a two-drive cable, the Drive/Device 0 connector is always the farthest one from the system
board connector and the Drive/Device 1 connector is always the closest to the system board
connector.

Some cables may be labeled “Drive 0” instead of “Device 0” and “Drive 1” instead of

✎

“Device 1”.

Device 1

(slave)

Gray

Face

Device 0

(master)

Black

Face

4.3 Drive Installation Guidelines

Most computer system boards have two ATA (IDE) controller channels with a dedicated
connector for each controller. One controller is designated as the primary and the other as the
secondary controller.

Each of the two controllers can have up to two devices attached to it. Each computer system may
therefore have a maximum of four ATA/ATAPI drives. All drives are connected to these
controllers 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 drives.

Any drive attached to a controller must have a drive designation. If only a single drive is
connected to a controller and its jumper is in the cable-select position, it is designated as the
Master Drive (Drive/Device 0) by its attachment to the Drive/Device 0 cable position. If two
cable-selected drives are connected to a single controller, one will be designated by its
attachment to the cable as the Master (Drive/Device 0) and the other as Slave (Drive/Device 1).

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

4–2 377977-AA1 Service Reference Guide, d260

4.3.1 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 controller. The most
demanding devices are in Class 1 and the least demanding are in Class 4.

Ultra ATA Drive Guidelines and Features

Class 1

Hard

Drives

ATA-100
ATA-66
ATA-33

Class 2

High Speed

Optical Drives

DVD
DVD-CD R/W

Class 3

Optical Storage

Drives

R/W CD-ROM
CD-ROM

General Attach Guidelines

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

■ Drives installed in the Device 0 positions on both the primary and secondary controllers

receive the greatest possible bandwidth.

■ The bootable ATA hard drive should always be installed on the primary controller in the

Device 0 position.

4.3.2 Attach Sequence Rules by Class Priority

Drives should be attached in the sequence shown for optimum performance starting at
position 1.

4

1

Class 4

Magnetic

Storage Drives

LS-120
Tape
Zip

3

Primary

2

41

Controller*

Secondary

32

Controller

Device 1 Device 0

*If there are three or more devices, two or more of which are hard drives, two hard drives should
be attached to the primary controller first before following the General Attach Sequence Rule.

Service Reference Guide, d260 377977-AA1 4–3

Ultra ATA Drive Guidelines and Features

The attach sequence rule may also be stated in table format:

Sequence Description

1 The lowest class drive - bootable hard drive recommended.

2 If only two drives, the last drive goes here; otherwise the lowest class of the

remaining drives.

3 If only three drives, attach the final drive here. If a fourth drive exists, attach the

lowest class drive here.

4 If there is a fourth drive, attach the final drive here - the drive with the highest

class number of all devices.

*If there are three or more devices, two or more of which are hard drives, two hard drives should
be attached to the primary controller first before following the General Attach Sequence Rule.

The rules allow for:

General Attach Sequence Rule*

■ Keeping the hard drive on a separate controller channel maximizes drive performance until a

fourth device is added.

■ Keeping the hard drives and removable media drives on separate controller channels

maximizes compatibility.

■ Keeping the hard drive and the writable optical drive on separate controller channels

maximizes optical drive reliability.

4.3.3 Attach Sequence Worksheet

Use the worksheet below for obtaining optimum system performance when setting up a computer
with multiple drives. Use the General Attach Sequence Rule to determine the best drive
installation sequence.

Attach Sequence Worksheet

Device Name Device Class

Position

Number

Controller

Name

Device

Number

Two examples of how to use the worksheet are:

■ Three device installation

■ Four device installation

4–4 377977-AA1 Service Reference Guide, d260

Ultra ATA Drive Guidelines and Features

Example 1: Three Device Installation Sample

A system has three devices: Ultra ATA-100 hard drive, CD-ROM drive, and a DVD drive. Using
the Device Class Table in Section 4.3.1, the devices may be identified as:

■ Ultra ATA-100 hard drive = Class 1

■ DVD drive = Class 2

■ CD-ROM drive = Class 3

Attach Sequence Worksheet - Three Device Installation (Sample)

Device

Device Name

Ultra ATA-100 hard drive 1 1 Primary 0

DVD drive 2 2 Secondary 0

CD-ROM drive 3 3 Secondary 1

Class

4

3

Primary

Position

Number

Controller

Name

1

2

41

Device

Number

Controller*

Secondary

32

Controller

Device 1 Device 0

Example 2: Four Device Installation Sample

A system has four devices: Ultra ATA-100 hard drive, Ultra ATA-100 hard drive, DVD-CDR/W
drive, and a ZIP-250 drive. Using the Device Class Table in Section 4.3.1, the devices may be
reidentified as:

■ Ultra ATA-100 hard drive = Class 1

■ Ultra ATA-100 hard drive = Class 1

■ DVD-CDR/W drive = Class 2

■ ZIP-250 drive = Class 4

Service Reference Guide, d260 377977-AA1 4–5

Ultra ATA Drive Guidelines and Features

Attach Sequence Worksheet - Four Device Installation (Sample)

Device

Device Name

Ultra ATA-100 hard drive 1 1 Primary 0

DVD-CDR/W drive 2 2 Secondary 0

ZIP-250 drive 4 3 Secondary 1

Ultra ATA-100 hard
drive*

Class

1 4 Primary 1

Position

Number

Controller

Name

Device

Number

*If there are three or more devices, two or more of which are hard drives, two hard drives should
be attached to the primary controller first before following the General Attach Sequence Rule.

4

3

Primary

1

2

41

Controller*

Secondary

32

Controller

Device 1 Device 0

4.3.4 Additional Drive Application Notes

■ When replacing a hard drive, the replacement should be of the same type (Ultra ATA -33,

-66, or -100) as that being removed to retain the same level of performance.

■ When Ultra ATA and SCSI hard drives are mixed in the same system, the Ultra ATA drive

will become the boot drive unless the boot order is changed in Computer Setup (F10 Setup).

4.4 SMART

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.

4–6 377977-AA1 Service Reference Guide, d260

4.5 Drive Capacities

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.

The table that follows identifies the capabilities and restrictions imposed on the computer by the
combinations of file and operating systems.

Microsoft to Drive Manufacturer Size Conversion Table*

Ultra ATA Drive Guidelines and Features

Drive Size as Identified by Microsoft

Operating System

2 GB 2.1 GB

4 GB 4.3 GB

32 GB 34.4 GB

64 GB 68.7 GB

128 GB 137 GB

2 TB 2.199 TB

*Drive size calculations by drive manufacturers are bytes to the base 10 while calculations by
Microsoft are bytes to the base 2.

Drive/Partition Capacity Limits

File

System

FAT 32 ATA Windows 2000/ XP 32 GB 128 GB

FAT 32 SCSI Windows 2000/ XP 32 GB 2 TB

Controller

Type Operating System

Drive Size as Identified by

Drive Manufacturers

Maximum Size

Partition Drive

NTFS ATA Windows NT/2000/XP 128 GB 128 GB

NTFS SCSI Windows NT/2000/XP 2TB 2TB

Service Reference Guide, d260 377977-AA1 4–7

Ultra ATA Drive Guidelines and Features

4–8 377977-AA1 Service Reference Guide, d260

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

Ä

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 Type

5

Service Reference Guide, d260 377977-AA1 5–1

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
static-sensitive 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

7,500 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.

5.2.3 Personal Grounding Methods and Equipment

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

5–2 377977-AA1 Service Reference Guide, d260

Identifying the Chassis, Routine Care, and Disassembly Preparation

■ 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
7,500
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

■ Static awareness labels

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

Service Reference Guide, d260 377977-AA1 5–3

Identifying the Chassis, Routine Care, and Disassembly Preparation

■ 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.

5–4 377977-AA1 Service Reference Guide, d260

Identifying the Chassis, Routine Care, and Disassembly Preparation

5.3.2 Cleaning the Computer Case

Follow all safety precautions in Section 5.3.1 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.

5.3.3 Cleaning the Keyboard

Follow all safety precautions in Section 5.3.1 before cleaning the keyboard.

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

5.3.2.

When cleaning debris from under the keys, review all rules in Section 5.3.1 before following
these procedures:

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

Ä

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

Ä

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

■ 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.

Service Reference Guide, d260 377977-AA1 5–5

Identifying the Chassis, Routine Care, and Disassembly Preparation

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 and wipe the ball with a clean, dry cloth before
reassembly.

■ To clean the mouse body, follow the procedures in Section 5.3.2.

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 off only when the computer is turned off or the power cable has been

Ä

disconnected.

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 (HP 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

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

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. screws have a silver finish.

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

✎

area to prevent damage.

5–6 377977-AA1 Service Reference Guide, d260

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

Ä

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 a bubble-pack mailer 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

■ 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.

5.2, “Electrostatic Discharge Information.”

5.4.6 Lithium Coin Cell Battery

The battery that comes with the computer provides power to the real-time clock and has a
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

Å

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

Ä

general household waste.

Service Reference Guide, d260 377977-AA1 5–7

Identifying the Chassis, Routine Care, and Disassembly Preparation

5–8 377977-AA1 Service Reference Guide, d260

Removal and Replacement Procedures -

Microtower Type 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.

6

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.

Ä

CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as

Ä

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

Ä

screw in an application may damage the unit.

Service Reference Guide, d260 377977-AA1 6–1

Removal and Replacement Procedures - Microtower Type Chassis

6.2 Access Panel

1. Prepare the computer for disassembly (Section 6.1).

CAUTION: Before removing the computer access panel, ensure that the computer is turned off and that

Ä

the power cord is disconnected from the electrical outlet.

2. Remove the two screws that secure the access panel to the computer chassis. Some access
panels use captive thumbscrews.

Remove the right access panel to upgrade memory or an expansion card.

✎

Remove the left and right access panels to upgrade a drive.

3. Slide the access panel back about 1 inch (2.5 cm), then lift it away from and off the unit.

To replace the access panel, reverse the removal steps.

6–2 377977-AA1 Service Reference Guide, d260

6.3 Front Bezel

1. Prepare the computer for disassembly (Section 6.1).

2. Remove the access panels (Section 6.2).

3. Disconnect the power button control cable from the system board.

4. Press fastener as circles shown and pull out to remove the front bezel.

Removal and Replacement Procedures - Microtower Type Chassis

To install the front bezel, insert the top two latches into their respective holes in the chassis and
push the bezel in until it is fully seated.

The front bezel shown may be different than the one on your computer but the removal and

✎

replacement procedures are identical.

When replacing the front bezel, ensure that the top of the front bezel is flush with the top of the

✎

chassis before pressing it into place.

Service Reference Guide, d260 377977-AA1 6–3

Removal and Replacement Procedures - Microtower Type Chassis

6.4 Front Drive Bezels

1. Prepare the computer for disassembly (Section 6.1).

2. Remove the access panel (Section 6.2).

3. Remove the front bezel (Section 6.3).

6.4.1 5.25” Drive Bezel Blank

Press one of the retaining tabs on the inside of the large bezel towards the outer edge of the bezel
to release the bezel blank. At the same time, pull the bezel blank outwards to remove it from the
main bezel.

To install a bezel blank, reverse the removal procedure.

6–4 377977-AA1 Service Reference Guide, d260

6.4.2 Diskette Drive Bezel

Pull the right retaining tab upwards. At the same time, pull the bezel outwards to remove it from
the main bezel.

Removal and Replacement Procedures - Microtower Type Chassis

To install a diskette drive bezel, reverse the removal procedure.

Service Reference Guide, d260 377977-AA1 6–5

Removal and Replacement Procedures - Microtower Type Chassis

6.5 Memory Modules

For more information on memory used in these computers refer to Appendix E.

CAUTION: The memory module sockets have gold metal contacts. When upgrading the memory, it is

Ä

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.

Ä

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

Ä

may damage the module.

1. Prepare the computer for disassembly (Section 6.1).

2. Remove the right access panel (Section 6.2).

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

Å

cool before touching.

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

6–6 377977-AA1 Service Reference Guide, d260

Removal and Replacement Procedures - Microtower Type Chassis

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.

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.

Service Reference Guide, d260 377977-AA1 6–7

Removal and Replacement Procedures - Microtower Type Chassis

6.6 Expansion Card

1. Prepare the computer for disassembly (Section 6.1).

2. Remove the right access panel (Section 6.2).

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

If installing an expansion card in an empty slot, skip to step 9.

4. To remove an expansion card, disconnect any cables attached to the expansion card.

5. Remove the screw at the top of the expansion slot.

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.

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

If not installing an additional expansion card, skip to step 11.

9. Remove the expansion slot cover.

10. Slide the expansion card into the expansion socket and press it firmly into place.

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. Install the screw at the top of the expansion slot to further secure the part in the chassis.

12. Replace the access panel.

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

Reconfigure the computer, if necessary.

6–8 377977-AA1 Service Reference Guide, d260

6.7 Drives

The computer supports up to five 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

Ä

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 HP factory-installed files.

6.7.1 Drive Positions

Removal and Replacement Procedures - Microtower Type Chassis

Drive Positions

Item Description Item Description

1 Optical drive 3 Diskette drive

2 Optical drive 4 Hard drive

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

Service Reference Guide, d260 377977-AA1 6–9

Removal and Replacement Procedures - Microtower Type Chassis

6.7.2 Removing a 5.25” Drive

1. Prepare the computer for disassembly (Section 6.1).

2. Remove both the right and left access panels (Section 6.2).

3. Remove the front bezel (section 6.3).

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

In some cases it may be easier to slide the drive part way out of the drive bay before removing the

✎

cables.

5. Remove the four screws, two from each side, that secure the drive in the drive cage 1.

6. Slide the drive out of the drive cage 2.

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 drive

✎

from bay 1 and then knock or pry out the metal shield that covers the front of bay 2.

WARNING: There may be sharp edges on the inside of the bay opening after the shield has been

Å

removed.

6–10 377977-AA1 Service Reference Guide, d260

Removal and Replacement Procedures - Microtower Type Chassis

6.7.3 Removing a Diskette Drive

1. Prepare the computer for disassembly (Section 6.1).

2. Remove both the right and left access panels (Section 6.2).

3. Remove the front bezel (section 6.3).

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

5. Remove the four screws, two from each side, that secure the drive in the drive cage 1.

6. Slide the drive out of the front of the chassis 2.

To replace the diskette drive, reverse removal procedure.

6.7.4 Removing a 3.5” Hard Drive

1. Prepare the computer for disassembly (Section 6.1).

2. Remove both the right and left access panels (Section 6.2).

3. Remove the front bezel (section 6.3).

4. Disconnect the power, and data cables from the back of all installed 3.5” drives.

5. Remove the four screws, two from each side, that secure the drive in the drive cage 1.

6. Slide the drive out of the drive cage 2.

Service Reference Guide, d260 377977-AA1 6–11

Removal and Replacement Procedures - Microtower Type Chassis

To replace the drive cage, reverse the removal procedure.

6–12 377977-AA1 Service Reference Guide, d260

6.8 Front USB Device

1. Prepare the computer for disassembly (Section 6.1).

2. Remove the right access panel (Section 6.2).

3. Remove the front bezel (section 6.3).

4. Disconnect the front USB cable from the system board.

5. Remove the single screw that secures the front USB device to the chassis 1, then slide the
USB housing up to release it from the chassis 2.

Removal and Replacement Procedures - Microtower Type Chassis

Service Reference Guide, d260 377977-AA1 6–13

Removal and Replacement Procedures - Microtower Type Chassis

6. Remove the two screws that secure the USB printed circuit board from the inside of the USB
housing and then remove the board.

The USB board shown is used on the d220, d228, and d230 models; the d240 and d248 models

✎

have only one capacitor on the board.

To install the USB board and the USB housing to the chassis, reverse the removal procedures.

6–14 377977-AA1 Service Reference Guide, d260

Removal and Replacement Procedures - Microtower Type Chassis

6.9 Processor and Heatsink

6.9.1 Removing Northwood cooler

1. Prepare the computer for disassembly (Section 6.1).

2. Remove the right access panels (Section 6.2).

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

4. Remove Heatsink.

5. Raise the handle on the ZIF socket to the full open position.

6. Grasp the processor by the edges and pull it straight up from the socket.

6.9.2 Removing Prescott cooler

1. Prepare the computer for disassembly (Section 6.1).

2. Remove the right access panels (Section 6.2).

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

Service Reference Guide, d260 377977-AA1 6–15

CAUTION: For Cel 2.0 Ghz (309578-001) and P4 2.4 GHz/533/1MB (394384-001) box
CPU, the fansink shipped with Box CPU should not be used. Please use respective thermal solution
created for d260 (377348-001 for Cel 2.0 Ghz and “378157-001” for P4 2.4 GHz/533/1MB)

6.10 System Board

1. Prepare the computer for disassembly (Section 6.1).

2. Remove both the right and left access panels (Section 6.2).

3. Remove the front bezel (section 6.3).

4. Remove the diskette drive (Section 6.7.3).

5. Disconnect the power, and data cables from the back of all installed 3.5” drives.

6. Remove 3.5" Hard Drive (Section 6.7.4).

7. Disconnect all cables from the system board.

8. Remove the heatsink from the system board (Section 6.9).

9. Remove the six screws that secure the system board to the chassis 1.

10. Lift up the system board to remove it 2.

Removal and Replacement Procedures - Microtower Type Chassis

To install the system board, reverse the removal procedure.

The system board shown may be different from the one installed in your computer.

✎

Service Reference Guide, d260 377977-AA1 6–17

Removal and Replacement Procedures - Microtower Type Chassis

6.11 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

Å

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 spare designated for this product.

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

Ä

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.

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

N

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

CAUTION: Static electricity can damage the electronic components of the computer or optional

Ä

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).

2. Remove the right access panel (Section 6.2).

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.

4. Depending on the type of battery holder on the system board, complete the following
instructions to replace the battery:

6–18 377977-AA1 Service Reference Guide, d260

6.11.1 Type 1 Battery Holder

1. To release the battery from its holder 1, squeeze the metal clamp that extends above one
edge of the battery.

2. When the battery pops up, lift it out.

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

Removal and Replacement Procedures - Microtower Type Chassis

4. Replace the computer cover or 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.

Service Reference Guide, d260 377977-AA1 6–19

Removal and Replacement Procedures - Microtower Type Chassis

6.11.2 Type 2 Battery Holder

1. To release the battery from the holder, push the retaining clip that holds the battery in place

1.

2. Lift the battery out of its holder 2.

3. Slide the replacement battery into position. The battery holder automatically secures the
battery in the proper position.

4. Replace the computer cover or 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.

6–20 377977-AA1 Service Reference Guide, d260

6.12 Power Supply

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

Å

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).

2. Remove the right access panel (Section 6.2).

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

If the chassis has a removable retaining clip, lay the chassis down on its side for easy access
and continue with step 4.

If the chassis does not have a removable retaining clip, keep the computer in its upright
position and continue with step 5.

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

5. Slide the power supply toward the front of the computer 2, then lift it out of the computer.

Removal and Replacement Procedures - Microtower Type Chassis

To install the power supply, reverse the removal procedure.

On chassis with a power supply retaining clip it is easier to install the power supply with the

✎

chassis turned upside down. This will give you better control when installing the first power
supply retaining screw.

Service Reference Guide, d260 377977-AA1 6–21

Removal and Replacement Procedures - Microtower Type Chassis

6–22 377977-AA1 Service Reference Gu ide, d260

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

A

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, d260 377977-AA1 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

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)

Select
Auto Linefeed
Error

Initialize Printer
Select IN
Signal Ground

1
2
3
4

+5 VDC

- Data
+ Data
Ground

Microphone

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

1 (Tip) Audio

2 (Ring) Power

3 (Shield) Ground

A– 2 377977-AA1 Ser vice Reference Guid e, d260

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

3 (Shield) Ground

Monitor

Connector and Icon

Connector Pin Assignments

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

4-Pin Power (for CPU)

Connector and Icon Pin Signal

1GND

2GND

3 +12 V

4 12 V

Service Reference Guide, d260 377977-AA1 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

20-Pin Power

15
16
17
18
19

20
21
22
23
24

25
26
27
28

20

10

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

11

DMAK
Ground
INTRQ
IOCS16
DA1

PDIAG (cable detect)
DA0
DA2
CS1FX
CS3FX

DASP
Ground



1

Pin Signal Pin Signal Pin Signal Pin Signal

1
2
3
4

5

+3.3 V
+3.3 V
GND
+5 V

GND

6
7
8
9

10

+5 V
GND
PWROK
+5V SB

+12 V

11
12
13
14

15

+3.3 V

-12 V
GND
PSON/
SLP S5#
GND

16
17
18
19

20

GND
GND
open*
+5 V

+5 V

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

A– 4 377977-AA1 Ser vice Reference Guid e, d260

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 6.00 feet (1.8 m) and a maximum of 9.75
feet (3.0 m).

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.

B

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, d260 377977-AA1 B–1

Country-Specific Requirements

D260 is only for China Market, it is CCC certified.

B–2 377977-AA1 Service Reference Guide, d260

C

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 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, d260 377977-AA1 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.

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
and Status Bad.

DMA-1 Error
DMA-2 Error

DMA Controller Error POST error while trying to

Checking
NVRAM...Update
Failed

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

Error when initializing
secondary DMA
controller.

initialize the DMA
controller.

BIOS could not write to
the NVRAM block.

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 377977-AA1 Service Reference Guide, d260

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

NVRAM Ignored NVRAM data used to

NVRAM Bad NVRAM data used to

Error detected while
validating NVRAM data.

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

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.

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

programming the count
register of channel 2 of
the 8254 timer.

Interrupt Controller-1
Error

Interrupt Controller-1
Error

CMOS Date/Time Not
Set

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

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

BIOS POST could not
initialize the
Master/Slave Interrupt
controller.

CMOS Date and/or Time
is invalid.

Replace the system board.

Replace the system board.

Set the date and time under Control
Panel or in F10 Setup depending on
the operating system.

If problem persists, replace the RTC
battery.

access Computer Setup. Select Load
Default Settings > Save and Exit.

Service Reference Guide, d260 377977-AA1 C–3

POST Error Messages

Screen Message Probable Cause Recommended Action

CMOS Checksum Bad CMOS contents failed the

Checksum check.

Keyboard Error Keyboard not present or

system not responding
when keyboard controller
is initialized.

Keyboard/Interface
Error

Keyboard controller
failure.

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

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.

C–4 377977-AA1 Service Reference Guide, d260

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.

D

■ 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, d260 377977-AA1 D–1

Solving Minor Problems

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

Ä

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.

Cannot remove
computer cover or
access panel.

Poor performance is
experienced.

Software control of the
power switch is not
functional.

Computer is in

standby

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

Smart Cover Lock,
featured on some
computers, is locked.

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

mode.

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.

1. Unlock the Smart Cover Lock
using Computer Setup.

2. Use the Smart Cover FailSafe Key
in case of forgotten password,
power loss, or computer
malfunction.

not blocked.

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.

D–2 377977-AA1 Service Reference Guide, d260

Solving Minor Problems (Continued)

Problem Cause Possible Solution

Computer powered off
automatically.

Processor thermal
protection activated:

A fan may be blocked or
not turning.

OR
The heatsink is not

properly attached to the
processor.

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.

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

System unable to power
on.

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

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

2. Remove the expansion cards one
at a time.

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 amber 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. Replace the system board.

Service Reference Guide, d260 377977-AA1 D–3

Solving Power Supply Problems

Solving Power Supply Problems

Problem Cause Solution

Power supply shuts down
intermittently.

Computer powered off
automatically.

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

Power supply fault. Replace the power supply.

Processor thermal
protection activated:

A fan may be blocked
or not turning.

OR
The heatsink/fan

assembly is not properly
attached to the
processor.

Select the proper AC voltage.

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.

D–4 377977-AA1 Service Reference Guide, d260

Solving Diskette Problems

Solving Diskette Problems

Problem Cause Solution

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

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

Now.

Diskette is incorrectly
inserted.

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.

Remove diskette and reinsert.

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.

Diskette is
write-protected.

Writing to the wrong
drive.

Not enough space is
left on the diskette.

Diskette write control is
enabled.

Diskette is damaged. Replace the damaged disk.

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

Service Reference Guide, d260 377977-AA1 D–5

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.

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

Solving Diskette Problems (Continued)

Problem Cause Solution

A problem has occurred
with a disk transaction.

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

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

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

click Check Now.

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.

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.

Removable media boot
has been disabled in
Computer Setup.

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.

Run Computer Setup and enable
Removable Media Boot in

Storage

> Storage Options.

Diskette MBR validation
is enabled.

D–6 377977-AA1 Service Reference Guide, d260

Run Computer Setup and disable
Diskette MBR Validation in

Storage

> Storage Options.

Solving Hard Drive Problems

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.

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

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

Drive jumper settings
may be incorrect.

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.

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.

If the drive is a secondary drive that
has just been installed on the same
cable as the primary drive, verify
that the jumpers for both drives are
set correctly.

Nonsystem disk/NTLDR
missing message.

Second Ultra ATA hard
drive does not perform
optimally.

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.

Hard drive boot
disabled in Computer
Setup.

Using the wrong cable
for the drive type.

Remove the diskette from the diskette
drive.

1. Insert a bootable diskette into
the diskette drive and restart the
computer.

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.

Run Computer Setup and enable the
hard drive entry in the Boot
Device Priority.

Reinstall the second Ultra ATA hard
drive using an 80-conductor cable
(standard on select models.)

Service Reference Guide, d260 377977-AA1 D–7

Solving Hard Drive Problems (Continued)

Problem Cause Solution

Both slow and fast
UATA devices are on
the same data cable.

Computer will not start. Hard drive is damaged. Observe the beeps and LED lights

Connect slower UATA devices to a
separate data cable connected to
the secondary IDE (ATA) controller.

on the front of the computer. See
Appendix C “POST Error
Messages”.

Computer seems to be
locked up.

Program in use has
stopped responding to
commands.

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.

D–8 377977-AA1 Service Reference Guide, d260

Solving Display Problems

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.

System ROM is bad;
system is running in
FailSafe Boot Block
mode (indicated by
eight beeps).

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

Ä

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.

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.

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.

Monitor settings in the
computer are not
compatible with the
monitor.

Service Reference Guide, d260 377977-AA1 D–9

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.

Solving Display Problems (Continued)

Problem Cause Solution

Monitor does not function
properly when used with
energy saver features.

Monitor without energy
saver capabilities is
being used with energy
saver features enabled.

Disable monitor energy saver
feature.

Dim characters. The brightness and

contrast controls are not
set properly.

Cables are not properly
connected.

Blurry video or requested
resolution cannot be set.

The picture is broken up,
rolls, jitters, or flashes.

If the graphics controller
was upgraded, the
correct video drivers
may not be loaded.

Monitor is not capable
of displaying requested
resolution.

The monitor connections
may be incomplete or
the monitor may be
incorrectly adjusted.

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.

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.

Monitor needs to be
degaussed.

Vibrating or rattling noise
coming from inside a CRT
monitor when powered on.

Clicking noise coming from
inside a CRT monitor.

High pitched noise coming
from inside a flat panel
monitor.

D–10 377977- AA1 Ser vice Reference Guid e, d260

Monitor degaussing coil
has been activated.

Electronic relays have
been activated inside
the monitor.

Brightness and/or
contrast settings are too
high.

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.

Lower brightness and/or contrast
settings.

Solving Display Problems (Continued)

Problem Cause Solution

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.

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.

1. Select the monitor’s
Auto-Adjustment 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.

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, d260 377977-AA1 D–11

Solving Audio Problems

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.

External speakers
plugged into the wrong
audio jack.

Audio cable not
connected.

Digital CD audio is not
enabled.

Double-click the Speaker icon on
the taskbar and use the volume
slider to adjust the volume.

Turn on the external speakers.

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.

Headphones or devices
connected to the
line-out connector mute
the internal speaker.

Volume is muted. 1. From the Control Panel

Computer is in

standby mode.

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

Ä

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

D–12 377977- AA1 Ser vice Reference Guid e, d260

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.

Solving Audio Problems (Continued)

Problem Cause Solution

Noise or no sound comes
out of the speakers or
headphones.

If you set digital as the Output Mode, the internal speaker and external analog

✎

speakers will no longer output audio until you switch back to an auto-sense or
analog mode.

If you set analog as the Output Mode, external digital speakers will not function
until you change the output mode back to an auto-sense or digital mode.

1. If using digital speakers that
have a stereo jack and want the
system to auto-switch to digital,
use a stereo-to-mono adapter
to

properly engage the
auto-sense feature or use the
multimedia device properties
to

manually switch the audio
signal from analog to digital.

2. If the headphones have a mono
jack, use the multimedia device
properties to switch the system
to analog out.

Sound cuts in and out. Processor resources are

being used by other
open applications.

Computer appears to be
locked up while recording
audio.

The hard disk may be
full.

Shut down all open
processor-intensive applications.

1. Before recording, make sure
there is enough free space on
the hard disk.

2. Try recording the audio file in a
compressed format.

Service Reference Guide, d260 377977-AA1 D–13

Solving Printer Problems

Solving Printer Problems

Problem Cause Solution

Printer will not print. Printer is not turned on

and online.

The correct printer
driver for the
application are not
installed.

If you are on a network,
you may not have made
the connection to
printer.

Printer may have failed. Run printer self-test.

Printer will not turn on. The cables may not be

connected properly.

Printer prints garbled
information.

The correct printer
driver is not installed.

The cables may not be
connected properly.

the

Turn the printer on and make sure it
is online.

1. Install the correct printer driver
for the application.

2. Try printing using the
MS-DOS

DIR C:\ > [printer port]

where [printer port] is the
address of the printer being
used. If the printer works, reload
the printer driver.

Make the proper network
connections to the printer.

Reconnect all cables.

Install the correct printer driver for
the application.

Reconnect all cables.

command:

Printer memory may be
overloaded.

Printer is offline. The printer may be out

of paper.

D–14 377977- AA1 Ser vice Reference Guid e, d260

Reset the printer by turning it off for
one minute, then turn it back on.

1. Check the paper tray and refill it
if it

is empty.

2. Select online.

Solving Keyboard and Mouse Problems

Solving Keyboard Problems

Problem Cause Solution

Keyboard commands and
typing are not recognized
by the computer.

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

Ä

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

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

Mouse does not respond to
movement or is too

slow.

Keyboard connector
is

not properly

connected.

Program in use has
stopped responding
to

commands.

Keyboard needs
repairs.

Computer is in
standby mode.

The Num Lock key
may

be on.

Mouse connector is
not

properly plugged
into the back of the
computer.

1. Turn off the computer.

2. Reconnect the keyboard to the
back of the computer and
restart the computer.

Shut down the computer using
the

mouse and then restart the

computer.

Replace the keyboard.

Press the power button to resume
from standby mode.

Press the Num Lock key. The
Num

Lock light should not be on if

you want to use the arrow keys. The
Num Lock key can be disabled
(or enabled) in Computer Setup.

1. Shut down the computer using
the keyboard.

2. Plug the mouse connector into
the back of the computer (or the
keyboard) and restart the
computer.

Program in use has
stopped responding
to

commands.

Mouse needs repairs. Replace the mouse.

Computer is in

standby mode.

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

Ä

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

Mouse will only move
vertically or horizontally, or
movement is jerky.

Service Reference Guide, d260 377977-AA1 D–15

Mouse roller ball is
dirty.

Shut down the computer using the
keyboard and then restart the
computer.

Press the power button to resume
from standby mode.

Remove roller ball cover from the
bottom of the mouse and clean it.

Solving Hardware Installation Problems

You may need to reconfigure the computer when you add or remove hardware, such as an
additional diskette drive. If you install a plug and play device, Windows XP automatically
recognize the device and configure the computer. If you install a non–plug and play device, you
must reconfigure the computer after completing installation of the new hardware. In Windows
2000, select the Add New Hardware icon in the Control Panel (for Windows XP, use the Add
Hardware Wizard) and follow the instructions that appear on the screen.

Solving Hardware Installation Problems

Problem Cause Solution

A new device is not
recognized as part of
the

system.

Computer will not start. Wrong memory

Device is not seated or
connected properly.

Cable(s) of new
external device are
loose or power cables
are unplugged.

Power switch of new
external device is not
turned on.

When the system
advised you of changes
to the configuration, you
did not accept them.

A plug and play board
may not automatically
configure when
added

if the default
configuration conflicts
with other devices.

modules were used in
the upgrade or memory
modules were installed
in the wrong location.

Ensure that the device is properly
and securely connected and that
pins in the connector are not
bent

down.

Ensure that all cables are properly
and securely connected and that
pins in the cable or connector are
not bent down.

Turn off the computer, turn on the
external device, then turn on the
computer to integrate the device
with the computer system.

Reboot the computer and follow the
instructions for accepting the
changes.

Use Windows XP Device Manager
to deselect the automatic settings for
the board and choose a basic
configuration that does not cause a
resource conflict. You can also use
Computer Setup to reconfigure or
disable devices to resolve the
resource conflict.

1. Review the documentation that
came with the system to
determine if you are using the
correct memory modules and to
verify the proper installation.

2. Observe the beeps and LED
lights on the front of the
computer. See Appendix C
“POST Error Messages” to
determine possible causes.

D–16 377977- AA1 Ser vice Reference Guid e, d260

Solving Hardware Installation Problems (Continued)

Problem Cause Solution

Power LED remains Green,
followed by computer
beeps.

Memory is installed
incorrectly or is bad.

1. Reseat DIMMs.

2. Replace DIMMs one at a time to
isolate the faulty module.

3. Replace third-party memory
with HP memory.

4. Replace the system board.

Service Reference Guide, d260 377977-AA1 D–17

Solving Network Problems

These guidelines do not discuss the process of debugging the network cabling.

Solving Network Problems

Problem Cause Solution

Wake-on -LAN feature is
not functioning.

Network driver does
not

detect network

controller.

Network status link light
does not turn on or it
never flashes.

The network status

✎

light should flash
when there is
network activity.

Diagnostics reports a
failure.

Wake-on -LAN is not
enabled.

Network controller is
disabled.

Incorrect network driver. Check the network controller

No active network is
detected.

Network controller is not
set up properly.

Network driver is not
properly loaded.

System cannot autosense
the network.

The cable is not securely
connected.

Use the Network control application
to enable Wake-on-LAN.

Run Computer Setup and enable
network controller.

documentation for the correct driver
or obtain the latest driver from the
manufacturer’s Web site.

Check cabling and network
equipment for proper connection.

Use the Network control application
to verify that the device is
properly.

Reinstall network drivers.

Disable auto-sensing capabilities
and force the system into the correct
operating mode.

Ensure that both ends of the data
cable are securely connected.

working

The cable is attached to
the incorrect connector.

There is a problem with
the cable or a device at
the other end of the cable.

Network controller
interrupt is shared with
an

expansion board.

The network controller
is

defective.

Diagnostics passes, but
the computer does not
communicate with the
network.

D–18 377977- AA1 Ser vice Reference Guid e, d260

Network drivers are
not

loaded, or driver
parameters do not match
current configuration.

Ensure that the cable is attached to
the correct connector.

Ensure that the cable and device at
the other end are operating
correctly.

Under the Computer Setup
Integrated Peripherals menu,
change the resource settings for the
board.

Replace the NIC or replace the
system board if the NIC is
embedded.

1. Make sure the network drivers
are

loaded and that the driver
parameters match the
configuration of the network
controller.

2. Make sure the correct network
client and protocol is installed.

Solving Network Problems (Continued)

Problem Cause Solution

Diagnostics passes, but
the computer does not
communicate with the
network. (continued)

The network controller
is

not configured for this

computer.

Select the Network icon in the
Control Panel and configure the
network controller.

Network controller
stopped working when
an expansion board was
added to the computer.

Network controller stops
working without apparent
cause.

New network card will
not boot.

Network controller
interrupt is shared with an
expansion board.

The network controller
requires drivers.

The expansion board
installed is a network card
(NIC) and conflicts with
the embedded NIC.

The files containing the
network drivers are
corrupted.

The cable is not securely
connected.

The network controller is
defective.

New network card may be
defective or may not meet
industry-standard
specifications.

Under the Computer Setup
Integrated Peripherals menu,
change the resource settings for the
board.

Verify that the drivers were not
accidentally deleted when the
drivers for a new expansion board
were installed.

Under the Computer Setup
Integrated Peripherals menu,
change the resource settings for the
board.

Reinstall the network drivers, using
the Restore Plus! CD.

Ensure that both ends of the cable
are securely attached to the correct
devices.

Replace the NIC or replace the
system board if the NIC is
embedded.

Install a working, industry-standard
NIC, or change the boot sequence
to boot from another source.

Cannot connect to
network server when
attempting Remote
System Installation.

System setup utility
reports unprogrammed
EEPROM.

Service Reference Guide, d260 377977-AA1 D–19

The network controller is
not configured properly.

Unprogrammed EEPROM. Flash the ROM.

Verify Network Connectivity, that a
DHCP Server is present, and that
the Remote System Installation
Server contains the NIC drivers for
your NIC.

Solving Memory Problems

CAUTION: For those systems that support ECC memory, HP does not support mixing ECC and non-ECC

Ä

memory. Otherwise, the system will not boot the operating system.

Solving Memory Problems

Problem Cause Solution

System will not boot or
does not function properly
after installing additional
memory modules.

Memory module is not
the correct type or
speed or the new
memory module is not
seated properly.

Replace module with the correct
industry-standard device for the
computer.

ECC memory modules are not
supported.

Out of memory error. Memory configuration

may not be set up
correctly.

You have run out of
memory to run the
application.

Memory count during POST
is wrong.

Insufficient memory error
during operation.

Power LED remains Green,
followed by computer
beeps.

The memory modules
may not be installed
correctly.

Too many Terminate
and Stay Resident
programs (TSRs) are
installed.

You have run out of
memory for the
application.

Memory is installed
incorrectly or is bad.

Use the Device Manager to check
memory configuration.

Check the application
documentation to determine the
memory requirements.

Check that the memory modules
have been installed correctly and
that proper modules are used.

Delete any TSRs that you do
not

need.

Check the memory requirements for
the application or add more
memory to the computer.

1. Reseat DIMMs.

2. Replace DIMMs one at a time to
isolate the faulty module.

3. Replace third-party memory
with HP memory.

4. Replace the system board.

D–20 377977- AA1 Ser vice Reference Guid e, d260

Solving Processor Problems

.

Solving Processor Problems

Problem Cause Solution

Poor performance is
experienced.

Processor is hot. 1. Make sure the airflow to the

computer is not blocked.

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

3. Make sure the processor
heatsink is installed properly.

Service Reference Guide, d260 377977-AA1 D–21

Solving CD-ROM and DVD Problems

Solving CD-ROM and DVD Problems

Problem Cause Solution

System will not boot from
CD-ROM or DVD drive.

CD-ROM or DVD devices
are not detected or driver is
not loaded.

Movie will not play in the
DVD drive.

Cannot eject compact disc
(tray-load unit).

The CD-ROM or DVD
boot is not enabled
through the Computer
Setup utility.

Non-bootable CD in
drive.

Drive is not connected
properly or not properly
configured.

Movie may be
regionalized for a
different country.

Decoder software is not
installed.

Disc not properly seated
in the drive.

Run the Computer Setup utility and
enable booting to removable media
and verify boot order settings.

Try a bootable CD in the drive.

1. Reconnect power and data
cables to the drive.

2. Install correct device driver.

See the documentation that came
with the DVD drive.

Install decoder software.

1. Turn off the computer and insert
a thin metal rod into the
emergency eject hole and push
firmly.

2. Slowly pull the tray out from the
drive until the tray is fully
extended, then remove the

disc.

CD-ROM, CD-RW,
DVD-ROM, or DVD-R/RW
drive cannot read a disc or
takes too long to start.

CD has been inserted
upside down.

The DVD-ROM drive
takes longer to start
because it has to
determine the type of
media played, such as
audio or video.

CD or DVD disc is dirty. Clean CD or DVD with a CD

Windows does not
detect the CD-ROM or
DVD-ROM drive.

Re-insert the CD with the label
facing up.

Wait at least 30 seconds to let the
DVD-ROM drive determine the type
of media being played. If the disc
still does not start, read the other
solutions listed for this topic.

cleaning kit.

1. Use Device Manager to remove
or uninstall the device in
question.

2. Restart the computer and let
Windows detect the device.

D–22 377977- AA1 Ser vice Reference Guid e, d260

Solving CD-ROM and DVD Problems (Continued)

Problem Cause Solution

Recording audio CDs is
difficult or impossible.

Wrong or poor quality
media type.

Solving Drive Key Problems

Solving DiskOnKey Problems

Problem Cause Solution

1. Try using a slower recording
speed.

2. Verify that you are using the
correct media for the drive.

3. Try a different brand of media.
Quality varies widely between
manufacturers.

Drive Key is not seen as a
drive letter in Windows XP.

The computer boots to DOS
after making a bootable
Drive Key.

The drive letter after the
last physical drive is not
available.

Drive Key is bootable. Install the Drive Key after the

Solving Internet Access Problems

Solving Internet Access Problems

Problem Cause Solution

Unable to connect to the
Internet.

Internet Service Provider
(ISP) account is not set
up properly.

Modem is not set up
properly.

Web browser is not set
up properly.

Change the default drive letter for
the Drive Key in Windows XP.

operating system boots.

Verify Internet settings or contact the
ISP for assistance.

Reconnect the modem. Verify the
connections are correct using the
quick setup documentation.

Verify that the Web browser is
installed and set up to work with
your ISP.

Cable/ DSL modem is
not plugged in.

Service Reference Guide, d260 377977-AA1 D–23

Plug in cable/DSL modem. You
should see a “power” LED light on
the front of the cable/DSL modem.

Solving Internet Access Problems (Continued)

Problem Cause Solution

Unable to connect to the
Internet. (continued)

Cable/DSL service is
not available or has
been interrupted due to
bad weather.

Try connecting to the Internet at a
later time or contact your ISP. (If the
cable/DSL service is connected, the
“cable” LED light on the front of the
cable/DSL modem will be on.)

Cannot automatically
launch Internet programs.

The CAT5 10/100
cable is disconnected.

IP address is not
configured properly.

Cookies are corrupted. Windows XP

You must log on to the
ISP before some
programs will start.

Connect the CAT5 10/100 cable
between the cable modem and the
computers’s RJ-45 connector. (If the
connection is good, the “PC” LED
light on the front of the cable/DSL
modem will be on.)

Contact the ISP for the correct IP
address.

1. Select Start > Control
Panel.

2. Double-click Internet
Options.

3. On the General tab, click the
Delete Cookies button.

Log on to the ISP and launch the
desired program.

D–24 377977-AA1 Service Reference Guide, d260

Solving Internet Access Problems (Continued)

Problem Cause Solution

Internet takes too long to
download Web sites.

Modem is not set up
properly.

Verify that the correct modem speed
and COM port are selected.

For Windows XP

1. Select Start > Control
Panel.

2. Double-click System.

3. Click the Hardware tab.

4. In the Device Manager area,
click the Device Manager
button.

5. Double-click Ports (COM &
LPT).

6. Right-click the COM port your
modem uses, then click
Properties.

7. U n d e r Device status, verify

that the modem is working
properly.

8. Under Device usage, verify
the modem is enabled.

9. If there are further problems,

click the Troubleshoot button
and follow the on-screen
instructions.

Service Reference Guide, d260 377977-AA1 D–25

D–26 377977-AA1 Service Reference Guide, d260

Memory

Systems Using Single or Dual Channel Memory

The d200 series computers come with Double Data Rate-Synchronous Dynamic Random Access
Memory (DDR-SDRAM) Dual Inline Memory Modules (DIMMs).

The memory sockets on the system board can be populated with industry-standard DIMMs and
come from the factory with at least one preinstalled memory module per computer. To achieve
the maximum memory support, you may be required to replace the preinstalled DIMM with a
higher capacity DIMM.

Only select models ship with dual channel memory capability.

✎

E

Number of Memory

Channels Supported

122 GB

2* 4 4 GB

* Supports both single and dual channel modes (select models)

The DIMMs used must be industry-standard 184-pin, unbuffered PC2100 266 MHz-, PC2700
333 MHz-, or PC3200 400 MHz-compliant (select models), 2.5 volt DDR-SDRAM DIMMs.
The following features are required:

■ CAS latency 2, 2.5, or 3 (CL = 2, CL = 2.5, CL=3)

■ Modules must contain the mandatory Joint Electronic Device Engineering Council (JEDEC)

Serial Presence Detect (SPD) information.

■ 128Mbit, 256 Mbit, and 512Mbit non-ECC memory technologies

■ Single and double-sided DIMMs may be used

DIMMs constructed with x8 and x16 DDR devices and x4 SDRAM are not supported.

The system will not start using unsupported DIMMs.

Number of Memory

Sockets

Maximum Memory

Capacity

✎

Service Reference Guide, d260 377977-AA1 E–1

Maximum operating speed is determined by a combination of the CPU and the type of memory
used. Refer to the table below for the optimum combination.

Maximum Memory Bus Speed (MHz)

Front-Side Bus

(MHz) PCI 2100 DIMM PCI 2700 DIMM PCI 3200 DIMM

400 266 266 266

533 266 333 333

800* 266 320 400

*Select models only.

In single channel mode, the maximum operational speed is determined by the slowest DIMM in
the system. For example, if the system is populated with a DIMM that is 266 MHz and a second
DIMM that is 333 MHz, the system will run at the slower of the two speeds.

In dual channel mode, all DIMMs must be identically matched. DIMMs in the J23 and J24
(Channel A) sockets must be identical; DIMMs in the J25 and J28 (Channel B) sockets must also
be identical. Therefore, if you have one preinstalled DIMM in J23 and are adding a second
DIMM, it is recommended that you install an identical DIMM into the J25 socket for optimum,
dual-channel performance.

If you are populating all four memory sockets in dual channel mode, you must use four identical

✎

DIMMs for dual channel performance.

The system will automatically operate in single channel mode or a higher-performing dual
channel mode, depending on how the DIMMs are installed.

E–2 377977-AA1 Service Reference Guide, d260