HP COMPAQ DX2308, COMPAQ DX2300 User Manual

Service Reference Guide

HP Compaq dx2300 and dx2308 Business PC

Microsoft and Windows are trademarks of Microsoft Corporation in the U.S. and other countries.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

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

Service Reference Guide

Business PCs

First Edition (February 2007)

Document Part Number: 443232–001

About This Book

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

bodily harm or loss of life.

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

damage to equipment or loss of information.

NOTE: Text set off in this manner provides important supplemental information.

ENWW iii

iv About This Book ENWW

Table of contents

1 Install the Operating System

Installing or Upgrading Device Drivers ........................................................................................ 1

HP Backup and Recovery Manager ............................................................................................ 2

2 Computer Setup (F10) Utility

Computer Setup (F10) Utilities ................................................................................................... 3

Using Computer Setup (F10) Utilities ............................................................................ 3

Computer Setup—System Information .......................................................................... 4

Computer Setup—Main ............................................................................................. 6

Computer Setup—Advanced ...................................................................................... 7

Computer Setup—Boot .............................................................................................. 9

Computer Setup—PC Health ..................................................................................... 10

Computer Setup—Actions ........................................................................................ 10

Recovering the Configuration Settings ....................................................................................... 10

Backing Up the CMOS ............................................................................................ 11

Restoring the CMOS ................................................................................................ 11

3 HP Insight Diagnostics

HP Insight Diagnostics ............................................................................................................ 13

Accessing HP Insight Diagnostics .............................................................................. 13

Survey Tab ............................................................................................................. 14

Test Tab ................................................................................................................. 14

Status Tab .............................................................................................................. 15

Log Tab ................................................................................................................. 16

Help Tab ................................................................................................................ 16

Saving and Printing Information in HP Insight Diagnostics ............................................ 16

Downloading the Latest Version of HP Insight Diagnostics ............................................. 17

4 Desktop Management

Remote System Installation ....................................................................................................... 20

ROM Flash ............................................................................................................................ 21

Boot Block Emergency Recovery Mode ..................................................................................... 21

HP Web Site Support ............................................................................................................. 22

Security ................................................................................................................................ 22

DriveLock ............................................................................................................... 22

Cable Lock Provision ............................................................................................... 23

Using DriveLock ....................................................................................... 22

DriveLock Applications .............................................................................. 23

ENWW v

Fault Notification and Recovery ................................................................................ 23

Drive Protection System ............................................................................................ 23

Surge-Tolerant Power Supply .................................................................................... 24

Thermal Sensor ....................................................................................................... 24

5 Serial ATA (SATA) Drive Guidelines and Features

SATA Hard Drives .................................................................................................................. 25

SATA Hard Drive Cables ........................................................................................................ 25

SATA Data Cable ................................................................................................... 25

.............................................................................................................................. 26

SMART ATA Drives ................................................................................................................ 26

Hard Drive Capacities ............................................................................................................ 26

6 Identifying the Chassis, Routine Care, and Disassembly Preparation

Chassis Designations .............................................................................................................. 27

Microtower (MT) ..................................................................................................... 27

Electrostatic Discharge Information ........................................................................................... 29

Generating Static .................................................................................................... 29

Preventing Electrostatic Damage to Equipment ............................................................ 29

Personal Grounding Methods and Equipment ............................................................. 30

Grounding the Work Area ....................................................................................... 30

Recommended Materials and Equipment .................................................................... 30

Operating Guidelines ............................................................................................................. 32

Routine Care ......................................................................................................................... 32

General Cleaning Safety Precautions ......................................................................... 32

Cleaning the Computer Case .................................................................................... 32

Cleaning the Keyboard ............................................................................................ 33

Cleaning the Monitor ............................................................................................... 33

Cleaning the Mouse ................................................................................................ 34

Service Considerations ........................................................................................................... 34

Power Supply Fan ................................................................................................... 34

Tools and Software Requirements .............................................................................. 34

Screws ................................................................................................................... 34

Cables and Connectors ........................................................................................... 35

Hard Drives ............................................................................................................ 35

Lithium Coin Cell Battery .......................................................................................... 35

7 Removal and Replacement Procedures— Microtower (MT) Chassis

Preparation for Disassembly .................................................................................................... 37

Access Panel ......................................................................................................................... 38

Front Bezel ............................................................................................................................ 39

Front Drive Bezels .................................................................................................................. 40

5.25" Drive Bezel Blank .......................................................................................... 40

Removing a 3.5” Drive Bezel Blank .......................................................................................... 41

Memory ............................................................................................................................... 42

DDR2-SDRAM DIMMs .............................................................................................. 42

Installing Memory Modules ....................................................................................... 42

Expansion Cards .................................................................................................................... 44

Expansion Slot Cover Lock ....................................................................................... 44

vi ENWW

PCI/PCIe Expansion Card ........................................................................................ 45

Cable Management .............................................................................................................. 47

Cable Connections .................................................................................................. 48

Drives ................................................................................................................................... 49

Drive Positions ....................................................................................................... 49

5.25" Drive ........................................................................................................... 50

3.5” Drive .............................................................................................................. 51

Removing a 3.5” Hard Drive ................................................................................... 53

Front I/O Panel Housing Assembly .......................................................................................... 54

Power Switch Assembly .......................................................................................................... 55

Speaker ............................................................................................................................... 56

Second Serial Port .................................................................................................................. 57

System Fan ............................................................................................................................ 58

Heatsink ............................................................................................................................... 59

Processor ............................................................................................................................. 60

System Board ....................................................................................................................... 62

Battery .................................................................................................................................. 63

Type 1 Battery Holder .............................................................................................. 64

Type 2 Battery Holder .............................................................................................. 65

Type 3 Battery Holder .............................................................................................. 66

Power Supply ........................................................................................................................ 67

Appendix A Connector Pin Assignments

Keyboard .............................................................................................................................. 69

Mouse .................................................................................................................................. 69

Ethernet BNC ........................................................................................................................ 69

Ethernet RJ-45 ........................................................................................................................ 70

Ethernet AUI .......................................................................................................................... 70

Parallel Interface .................................................................................................................... 71

Serial Interface, Powered and Non-Powered .............................................................................. 71

USB ...................................................................................................................................... 71

Diskette Drive Power ............................................................................................................... 72

Microphone .......................................................................................................................... 72

Headphone ........................................................................................................................... 72

Line-in Audio ......................................................................................................................... 72

Line-out Audio ........................................................................................................................ 72

External Infrared Transceiver ................................................................................................... 73

Monitor ................................................................................................................................ 73

Diskette Drive Standard Data Cable ......................................................................................... 74

24-Pin Power ......................................................................................................................... 74

24-Pin MicroFit Power ............................................................................................................ 75

4-Pin Power (for CPU) ............................................................................................................. 75

6-Pin Power (for CPU) ............................................................................................................. 75

SATA Data and Power ............................................................................................................ 76

PCI Express .......................................................................................................................... 76

PCI Express .......................................................................................................................... 77

DVI Connector ....................................................................................................................... 78

Appendix B Power Cord Set Requirements

ENWW vii

General Requirements ............................................................................................................ 81

Japanese Power Cord Requirements ......................................................................................... 81

Country-Specific Requirements ................................................................................................. 81

Appendix C Troubleshooting

Safety and Comfort ................................................................................................................ 83

Helpful Hints .......................................................................................................................... 83

Solving General Problems ....................................................................................................... 85

Solving Hardware Installation Problems .................................................................................... 88

Interpreting Diagnostic Lights ................................................................................................... 89

Index ................................................................................................................................. 91

viii ENWW

Install the Operating System

NOTE: If the computer was shipped with Microsoft Windows Vista loaded, you will be prompted

to register the computer with HP Total Care before installing the operating system. You will see a brief movie followed by an online registration form. Fill out the form, click the Begin button, and follow the instructions on the screen.

If the computer was not shipped with a Microsoft operating system, some portions of this documentation do not apply. Refer to the operating system documentation and online Help for operating instructions.

CAUTION: Do not add optional hardware or third-party devices to your computer until the

operating system is successfully installed. Doing so may cause errors and may prevent the operating system from installing properly. Once the automatic installation has begun, DO NOT TURN OFF THE COMPUTER UNTIL THE PROCESS IS COMPLETE. Turning off the computer during the installation process might damage the software that runs the computer or prevent its proper installation.

NOTE: Be sure there is a 10.2-cm (4-inch) clearance at the back of the unit and above the monitor

to permit the required airflow.

The first time the computer is turned on, the operating system is automatically installed. This takes approximately 5 to 10 minutes, depending on the operating system being installed. Carefully read and follow the instructions that appear on the screen to complete the installation.

NOTE: If the computer shipped with more than one operating system language on the hard drive,

the installation process could take up to 60 minutes.

Microsoft security updates are available on the Microsoft Web site.

Installing or Upgrading Device Drivers

When installing optional hardware devices after the operating system installation is complete, you must also install the drivers for each of the devices.

If prompted for the i386 directory, replace the path specification with C:\i386, or use the Browse button in the dialog box to locate the i386 folder. This action points the operating system to the appropriate drivers.

Obtain the latest support software, including support software for the operating system from

http://www.hp.com/support. Select your country and language, select Download drivers and

software, enter the model number of the computer, and press Enter.

ENWW Installing or Upgrading Device Drivers 1

HP Backup and Recovery Manager

The HP Backup and Recovery Manager is an easy-to-use, versatile application that is pre-loaded on each system and allows you to:

create Recovery Points to back up the entire system incrementally

●

back up the entire system in a single hard archive

●

back up individual files

●

Backups can be scheduled to occur automatically at designated intervals, or they can be initiated manually. Recovery can be performed from the Recovery Partition on the hard drive or the Recovery Disc Set. The Recovery Disc Set includes the Restore Plus! CD, the Microsoft Operating System, and any Supplemental Software CDs.

NOTE: HP highly recommends that you create a Recovery Disc Set immediately before using the

computer and schedule regular automatic Recovery Point backups.

To create the Recovery Disc Set:

1. Click Start > HP Backup and Recovery > HP Backup and Recovery Manager to open

the Backup and Recovery Wizard, then click Next.

2. Select Create factory software recovery CDs or DVDs to recover the system.

Follow the instructions in the wizard.

The HP Backup and Recovery Manager provides two basic recovery methods. The first, recovery of files and folders, operates in Windows. The second, PC Recovery, requires a reboot to the Recovery Partition or from the Recovery Disc Set. To reboot to the Recovery Partition, press F11 at startup when you see the message “Press F11 for Emergency Recovery.”

NOTE: For more information on using HP Backup and Recovery Manager, refer to the HP Backup

and Recovery Manager User Guide by selecting Start > HP Backup and Recovery > HP

Backup and Recovery Manager Manual.

You can order a Recovery Disc Set from HP by calling the HP support center. Go to the following Web site, select your region, and click the Technical support after you buy link under the Call HP heading to obtain the support center telephone number for your region.

http://welcome.hp.com/country/us/en/wwcontact_us.html

2Chapter 1 Install the Operating System ENWW

Computer Setup (F10) Utility

Computer Setup (F10) Utilities

Use Computer Setup (F10) Utility to do the following:

Change factory default settings.

●

Set the system date and time.

●

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

●

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

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

●

flash media devices.

Restrict a device from booting the unit.

●

Run hard drive self-tests.

●

View CPU and system temperatures.

●

Enter the Asset Tag or property identification number assigned by the company to this computer.

●

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

●

described in this section.

Secure 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 legacy diskette write ability (when supported by hardware).

●

Using Computer Setup (F10) Utilities

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

Turn on or restart the computer.

As soon as the computer is turned on, press F10 when the monitor light turns green to enter Computer

Setup. Press Enter to bypass the title screen, if necessary.

NOTE: If you do not press F10 at the appropriate time, you must restart the computer and

again press F10 when the monitor light turns green to access the utility.

The Computer Setup Utility screen is divided into menu headings and actions.

ENWW Computer Setup (F10) Utilities 3

Five menu headings appear on the Computer Setup Utility screen:

System Information

●

Main

●

Advanced

●

Boot

●

PC Health

●

Computer Setup-Actions

●

Use the arrow keys to select the appropriate heading, then press Enter. Use the arrow (up and down) keys to select the option you want, then press Enter. To return to the previous screen, press Esc.

To apply and save changes, press the F10 key.

If you have made changes that you do not want applied, press the F9 key to exit without saving.

To load optimized default values, press the F7 key.

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

(F10) changes because the CMOS could become corrupted. It is safe to turn off the computer only after exiting the F10 Setup screen.

Table 2-1 Computer Setup (F10) Utility Main Menu

Heading Table

System Information

Main

Advanced

Boot

PC Health

Exit

Computer Setup—System Information

NOTE: Support for specific Computer Setup options may vary depending on the hardware

configuration.

Table 2-2 Computer Setup—System Information

Option Description

Product Name

SKU Number

(view only)

Computer Setup—System Information on page 4

Computer Setup—Main on page 6

Computer Setup—Advanced on page 7

Computer Setup—Boot on page 9

Computer Setup—PC Health on page 10

Computer Setup—Actions on page 10

Processor Type

Processor Speed

System ROM

(view only)

4Chapter 2 Computer Setup (F10) Utility ENWW

Table 2-2 Computer Setup—System Information (continued)

Cache Size

(view only)

Memory Size

Integrated MAC

UUID

System Serial #

Asset Tracking Number

(view only)

ENWW Computer Setup (F10) Utilities 5

Computer Setup—Main

NOTE: Support for specific Computer Setup options may vary depending on the hardware

configuration.

Table 2-3 Computer Setup—Main

Option Description

Date (mm:dd:yy)

Time (hh:mm:ss)

SATA Port 1

SATA Port 2

SATA Port 3

SATA Port 4

Allows you to set system date.

Allows you to set system time.

For each, allows you to:

run HDD self-test for selected channel:

●

SMART Status Check

●

HDD Short Self-Test

●

HDD Extended Self-Test

●

auto-detect HDD size and head

●

set extended IDE drive on selected channel to:

●

None

●

Auto

●

set access mode on selected channel to:

●

Large

●

Auto

●

view:

●

Firmware

●

Capacity

●

Cylinder

●

Head

●

Precomp

●

Landing Zone

●

Sector

●

Onboard FDC Controller

Drive A

Halt On

Disables/enables the floppy disk controller.

Allows you to set Drive A to:

None

●

1.44M, 3.5 in.

●

Allows you to set POST error behavior to:

All Errors

●

No Errors

●

6Chapter 2 Computer Setup (F10) Utility ENWW

Table 2-3 Computer Setup—Main (continued)

All but Keyboard

●

All but Diskette

●

All but Diskette/Keyboard

●

POST Delay

Allows you to set a POST delay to:

0 seconds

●

5 seconds

●

10 seconds

●

15 seconds

●

30 seconds

●

Computer Setup—Advanced

NOTE: Support for specific Computer Setup options may vary depending on the hardware

configuration.

Table 2-4 Computer Setup—Advanced

Option Description

Execute Disable Bit

MAX DVMT Allocation

Disables/enables hardware DEP functionality.

Specify the size of DVMT/system memory to allocate for video memory:

64MB

●

Init Display First

(VGA Setting)

Onboard HD Audio

OnChip USB Controller

USB Legacy Support

Onboard LAN

Onboard LAN Boot ROM

Onboard Serial Port 1

Onboard Serial Port 2

128MB

●

224MB

●

Allows you to select the primary display device:

PCI Slot

●

OnChipVGA

●

PCIEx

●

Disables/enables onboard HD audio.

Disables/enables USB controller.

Disables/enables USB legacy support function (USB keyboard, USB mouse, and USB flash media).

Disables/enables onboard LAN controller.

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

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

Disabled

●

3F8/IRQ4

●

2F8/IRQ3

●

ENWW Computer Setup (F10) Utilities 7

Table 2-4 Computer Setup—Advanced (continued)

3E8/IRQ4

●

2E8/IRQ3

●

Onboard Parallel Port

Parallel Port Mode

After AC Power Loss

Wake on PCI Device from S5

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

Disabled

●

378/IRQ7

●

278/IRQ5

●

3BC/IRQ7

●

Allows you to select parallel port mode:

SPP

●

EPP

●

ECP

●

ECP+EPP

●

Normal

●

Allows you to select system power loss behavior:

●

Off

●

Last State

●

Disables/enables waking up from S5 by PCI device.

RTC Alarm Resume

Date (of Month)

Resume Time (hh:mm:ss)

Disables/enables RTC (real-time clock) alarm.

If RTC Alarm Resume is enabled, allows you to select the day of the month for resumption of RTC alarm. (Set to 0 for every day.)

If RTC Alarm Resume is enabled, allows you to select what time the RTC alarm will resume.

8Chapter 2 Computer Setup (F10) Utility ENWW

Computer Setup—Boot

NOTE: Support for specific Computer Setup options may vary depending on the hardware

configuration.

Table 2-5 Computer Setup—Boot

Option Description

Device Boot Disabling

F9 Boot Menu

Removable Device Boot Seq.

Hard Disk Boot Seq.

Optical Drive Boot Seq.

Network Boot Seq.

First Boot Device

Second Boot Device

Third Boot Device

Fourth Boot Device

Allows disabling of bootable device groups. Choose from:

None

●

USB

●

● Internal ODD

Internal FDD

●

USB+ODD+FDD

●

Disables/enables F9 Boot Menu.

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

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

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

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

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

Removable

●

Hard Disk

●

CDROM

●

Network

●

Disabled

●

NOTE: MS-DOS drive lettering assignments may not apply after a non-MS-DOS operating

system has started.

Set Supervisor Password

Set User Password

Security Option

BIOS Write Protection

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

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

Allows you to set the security option to Setup or System so that the password is required every time the system boots or only when entering Computer Setup.

Enable to prevent BIOS from being updated, disable to allow update.

ENWW Computer Setup (F10) Utilities 9

Computer Setup—PC Health

NOTE: Support for specific Computer Setup options may vary depending on the hardware

configuration.

Table 2-6 Computer Setup—PC Health

Option Description

System Fan Fail Check

Smart Fan Function

Current CPU Temperature

Current System Temperature

Current CPU Fan Speed

Current System Fan Speed

Vcore

12V

VCC (V)

VBAT (V)

5VSB (V)

Disables/enables system fan detection during POST.

Disables/enables smart fan functionality.

(view only)

Computer Setup—Actions

Table 2-7 Computer Setup—Actions

Option Description

Save and Exit Setup

Exit Without Saving

Load Optimized Defaults

Allows you to save current settings and exit Computer Setup.

Allows you to exit Computer Setup without saving changes..

Allows you to reset Computer Setup to factory defaults.

Recovering the Configuration Settings

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

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

10 Chapter 2 Computer Setup (F10) Utility ENWW

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

Backing Up the CMOS

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

computer.

Boot to DOS.

Type N:\folder\BIOS.exe SAVE:ABC001.DAT (where N is the drive letter of the removable

storage) to save the CMOS setting to the removable storage device.

Restoring the CMOS

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

Boot to DOS.

Type N:\folder\BIOS.exe LOAD:ABC001.DAT (where N is the drive letter of the removable

storage) to load the custom CMOS setting onto the target system.

ENWW Recovering the Configuration Settings 11

12 Chapter 2 Computer Setup (F10) Utility ENWW

HP Insight Diagnostics

NOTE: HP Insight Diagnostics is included on CD with some computer models only.

The HP Insight Diagnostics utility allows you to view information about the hardware configuration of the computer and perform hardware diagnostic tests on the subsystems of the computer. The utility simplifies the process of effectively identifying, diagnosing, and isolating hardware issues.

The Survey tab is displayed when you invoke HP Insight Diagnostics. This tab shows the current configuration of the computer. From the Survey tab, there is access to several categories of information about the computer. Other tabs provide additional information, including diagnostic test options and test results. The information in each screen of the utility can be saved as an html file and stored on a diskette or USB HP Drive Key.

Use HP Insight Diagnostics to determine if all the devices installed on the computer are recognized by the system and functioning properly. Running tests is optional but recommended after installing or connecting a new device.

You should run tests, save the test results, and print them so that you have printed reports available before placing a call to the Customer Support Center.

NOTE: Third party devices may not be detected by HP Insight Diagnostics.

Accessing HP Insight Diagnostics

You must boot to the Documentation and Diagnostics CD, as described in the steps below, to access HP Insight Diagnostics.

While the computer is on, insert the Documentation and Diagnostics CD into an optical drive on the

computer.

Shut down the operating system and turn off the computer.

Turn on the computer. The system will boot to the CD.

NOTE: If the system does not boot to the CD in the optical drive, you may need to change

the boot order in the Computer Setup (F10) utility so that the system attempts to boot to the optical drive before booting to the hard drive. Refer to the Computer Setup (F10) Utility Guide on the Documentation and Diagnostics CD for more information.

4. Select the appropriate language and click Continue.

ENWW HP Insight Diagnostics 13

5. In the End User License Agreement page, click Agree if you agree with the terms. The HP Insight

Diagnostics utility launches with the Survey tab displayed.

Survey Tab

The Survey tab displays important system configuration information.

In the View level field, you can select the Summary view to see limited configuration data or select the Advanced view to see all the data in the selected category.

In the Category field, you can select the following categories of information to display:

All—Gives a listing of all categories of information about the computer.

Overview—Gives you a listing of general information about the computer.

Architecture—Provides system BIOS and PCI device information.

Asset Control—Shows product name, asset tag, system serial number, and processor information.

Communication—Shows information about the computer parallel (LPT) and serial (COM) port settings,

plus USB and network controller information.

NOTE: It is recommended that you accept the assigned default keyboard for your language

unless you want to test your specific keyboard.

Graphics—Shows information about the graphics controller of the computer.

Input Devices—Shows information about the keyboard, mouse, and other input devices connected to

the computer.

Memory—Shows information about all memory in the computer. This includes memory slots on the system board and any memory modules installed.

Miscellaneous—Shows HP Insight Diagnostics version information, computer configuration memory (CMOS) information, system board data, and system management BIOS data.

Storage—Shows information about storage media connected to the computer. This list includes all fixed disks, diskette drives, and optical drives.

System—Shows information about the computer model, processor, chassis, and BIOS, plus internal speaker and PCI bus information.

Test Tab

The Test tab allows you to choose various parts of the system to test. You can also choose the type of test and testing mode.

There are three types of tests to choose from:

● Quick Test—Provides a predetermined script where a sample of each hardware component is

exercised and requires no user intervention in either Unattended or Interactive mode.

●

Complete Test—Provides a predetermined script where each hardware component is fully tested. There are more tests available in the Interactive mode, but these require user intervention.

●

Custom Test—Provides the most flexibility in controlling the testing of a system. The Custom Test mode allows you to specifically select which devices, tests, and test parameters are run.

14 Chapter 3 HP Insight Diagnostics ENWW

For each test type, there are two test modes to choose from:

●

Interactive Mode—Provides maximum control over the testing process. The diagnostic software will prompt you for input during tests that require your interaction. You may also determine whether the test passed or failed.

●

Unattended Mode—Does not display prompts and requires no interaction. If errors are found, they are displayed when testing is complete.

To begin testing:

Select the Test tab.

2. Select the tab for the type of test you want to run: Quick, Complete, or Custom.

3. Select the Test Mode: Interactive or Unattended.

4. Choose how you want the test to be executed, either Number of Loops or Total Test Time.

When choosing to run the test over a specified number of loops, enter the number of loops to perform. If you desire to have the diagnostic test for a specified time period, enter the amount of time in minutes.

If performing a Quick Test or Complete Test, select the device to be tested from the drop-down list.

If performing a Custom Test, Click the Expand button and select the devices to be tested or click the Check All button to select all devices.

6. Click the Begin Testing button at the bottom right corner of the screen to start the test. The Status

tab, which allows you to monitor the progress of the test, is automatically displayed during the testing process. When the test is complete, the Status tab shows whether the device passed or failed.

7. If errors are found, go to the Log tab and click the Error Log to display more detailed information

and recommended actions.

Status Tab

The Status tab displays the status of the selected tests. The type of test executed (Quick, Complete, or Custom) is also displayed. The main progress bar displays the percent complete of the current set of tests. While testing is in progress, a Cancel Testing button is displayed for use if you want to cancel the test.

After testing has completed, the Cancel Testing button is replaced with a Retest button. The Retest button will retest the last set of tests executed. This enables you to re-run the set of tests without having to re-enter the data in the Test tab.

The Status tab also shows:

The devices being tested

●

The test status (running, passed, or failed) of each device being tested

●

The overall test progress of all devices being tested

●

The test progress for each device being tested

●

The elapsed test times for each device being tested

●

ENWW HP Insight Diagnostics 15

Log Tab

The Log tab contains a Test Log tab and an Error Log tab.

The Test Log displays all tests that have been executed, the number of times of execution, the number of times failed, and the time it took to complete each test. The Clear Test Log button will clear the contents of the Test Log.

The Error Log displays the tests for devices that have failed during the diagnostic testing and includes the following columns of information.

●

The Clear Error Log button will clear the contents of the Error Log.

The Device section displays the device tested.

The Test section displays the type of test run.

The Description section describes the error that the diagnostic test found.

The Recommended Repair will give a recommended action that should be performed to resolve the failed hardware.

The Failed Count is the number of times the device has failed a test.

The Error Code provides a numerical code for the failure. The error codes are defined in the Help tab.

Help Tab

On the Help tab contains an HP Insight Diagnostics tab, an Error Codes tab, and a Test Components tab.

The HP Insight Diagnostics tab contains help topics and includes search and index features.

The Error Codes tab provides a description of each numerical error code that may appear in the Error

Log tab located on the Log tab. Each code has a corresponding error Message and a Recommended Repair action that should help solve the problem. To find an error code description quickly, enter the

code in the box at the top of the tab and click the Find Error Codes button.

The Test Components tab displays low-level information on tests that are run.

Saving and Printing Information in HP Insight Diagnostics

You can save the information displayed in the HP Insight Diagnostics Survey and Log tabs to a diskette or a USB 2.0 HP Drive Key (64MB or higher). You can not save to the hard drive. The system will automa tically c reate an h tml file t hat has the same appearance as the information displayed on the screen.

Insert a diskette or USB 2.0 HP Drive Key (capacity must be 64MB or higher). USB 1.0 Drive Keys

are not supported.

2. Click Save in the bottom right corner of the screen.

3. Select Save to the floppy or Save to USB key.

4. Enter a file name in the File Name box and click the Save button. An html file will be saved to the

inserted diskette or USB HP Drive Key.

16 Chapter 3 HP Insight Diagnostics ENWW

NOTE: Do not remove the diskette or USB key until you see a message indicating that the

html file has been written to the media.

Print the information from the storage device used to save it.

NOTE: To exit HP Insight Diagnostics, click Exit Diagnostics button in the bottom left corner of

the screen then remove the Documentation and Diagnostics CD from the optical drive.

Downloading the Latest Version of HP Insight Diagnostics

Go to

2. Click the Software & Driver Downloads link.

6. Click the Diagnostic link.

7. Click HP Insight Diagnostics Offline Edition.

8. Select a language and click Download.

http://www.hp.com.

Enter your product number (for example, dc7700) in the text box and press the Enter key.

Select your specific computer model.

Select your OS.

NOTE: The download includes instructions on how to create the bootable CD.

ENWW HP Insight Diagnostics 17

18 Chapter 3 HP Insight Diagnostics ENWW

Desktop Management

ENWW 19

Remote System Installation

Remote System Installation allows you to start and set up the system using the software and configuration information located on a network server by initiating the Preboot Execution Environment (PXE). The Remote System Installation feature is usually used as a system setup and configuration tool, and can be used for the following tasks:

Formatting a hard drive

●

Deploying a software image on one or more new PCs

●

Remotely updating the system BIOS in flash ROM

●

Configuring the system BIOS settings

●

To initiate Remote System Installation, press F12 when the F12 = Network Service Boot message appears in the lower-right corner of the HP logo screen when the computer is booting up. Follow the instructions on the screen to continue the process. The default boot order is a BIOS configuration setting that can be changed to always attempt to PXE boot.

20 Chapter 4 Desktop Management ENWW

ROM Flash

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

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

page,

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

password prevents unauthorized ROM upgrades. System Software Manager allows the system administrator to set the setup password on one or more PCs simultaneously. For more information,

http://www.hp.com/go/ssm.

visit

Boot Block Emergency Recovery Mode

Boot Block Emergency Recovery Mode permits system recovery in the unlikely event of a ROM flash failure. For example, if a power failure were to occur during a BIOS upgrade, the ROM flash would be incomplete. This would render the system BIOS unusable. The Boot Block is a flash-protected section of the ROM that contains code that checks for a valid system BIOS image when the system is turned on.

If the system BIOS image is valid, the system starts normally.

●

If the system BIOS image is not valid, a failsafe Boot Block BIOS provides enough support to

●

search removable media for BIOS image files. If an appropriate BIOS image file is found, it is

●

automatically flashed into the ROM.

start the system from bootable removable media that automatically invokes system BIOS

●

upgrade utilities.

When an invalid system BIOS image is detected, the system power LED will blink red 8 times, one blink every second. Simultaneously, the speaker will beep 8 times. If the portion of the system ROM containing the video option ROM image is not corrupt, Boot Block Emergency Recovery Mode will be displayed on the screen.

To recover the system after it enters Boot Block Emergency Recovery Mode, complete the following steps:

Turn off the power.

Insert a diskette, CD, or USB flash device containing the desired BIOS image file in the root directory.

NOTE: The media must be formatted using the FAT12, FAT16, or FAT32 file system.

Turn on the computer.

If no appropriate BIOS image file is found, the failsafe Boot Block BIOS will attempt to start the system from a bootable device. If no bootable device is found, you will be prompted to insert media containing a BIOS image file or BIOS upgrade utility.

If the system successfully reprograms the ROM, the system will automatically power off.

Remove the removable media used to upgrade the BIOS.

Turn the power on to restart the computer.

ENWW ROM Flash 21

HP Web Site Support

HP engineers rigorously test and debug software developed by HP and third-party suppliers, and develop operating system specific support software, to ensure performance, compatibility, and reliability for HP computers.

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

HP has made the task of locating, accessing, evaluating, and installing the latest support software easier. You can download the software from

The Web site contains the latest device drivers, utilities, and flashable ROM images needed to run the latest Microsoft Windows operating system on the HP computer.

Security

DriveLock

DriveLock is an industry-standard security feature that prevents unauthorized access to the data on ATA hard. DriveLock has been implemented as an extension to Computer Setup. It is only available when hard drives that support the ATA Security command set are detected. DriveLock is intended for HP customers for whom data security is the paramount concern. For such customers, the cost of the hard drive and the loss of the data stored on it is inconsequential when compared with the damage that could result from unauthorized access to its contents. In order to balance this level of security with the practical need to accommodate a forgotten password, the HP implementation of DriveLock employs a two-password security scheme. One password is intended to be set and used by a system administrator while the other is typically set and used by the end-user. There is no "back-door" that can be used to unlock the drive if both passwords are lost. Therefore, DriveLock is most safely used when the data contained on the hard drive is replicated on a corporate information system or is regularly backed up. In the event that both DriveLock passwords are lost, the hard drive is rendered unusable. For users who do not fit the previously defined customer profile, this may be an unacceptable risk. For users who do fit the customer profile, it may be a tolerable risk given the nature of the data stored on the hard drive.

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

Using DriveLock

When one or more hard drives that support the ATA Security command set are detected, the DriveLock option appears under the Security menu in Computer Setup. The user is presented with options to set the master password or to enable DriveLock. A user password must be provided in order to enable DriveLock. Since the initial configuration of DriveLock is typically performed by a system administrator, a master password should be set first. HP encourages system administrators to set a master password whether they plan to enable DriveLock or keep it disabled. This will give the administrator the ability to modify DriveLock settings if the drive is locked in the future. Once the master password is set, the system administrator may enable DriveLock or choose to keep it disabled.

If a locked hard drive is present, POST will require a password to unlock the device. If a power-on password is set and it matches the device’s user password, POST will not prompt the user to re-enter the password. Otherwise, the user will be prompted to enter a DriveLock password. On a cold boot, either the master or the user password may be used. On a warm boot, enter the same password used to unlock the drive during the preceding cold-boot. Users will have two attempts to enter a correct password. On a cold boot, if neither attempt succeeds, POST will continue but the drive will remain inaccessible. On a

22 Chapter 4 Desktop Management ENWW

warm boot or restart from Windows, if neither attempt succeeds, POST will halt and the user will be instructed to cycle power.

DriveLock Applications

The most practical use of the DriveLock security feature is in a corporate environment. The system administrator would be responsible for configuring the hard drive which would involve, among other things, setting the DriveLock master password and a temporary user password. In the event that the user forgets the user password or the equipment is passed on to another employee, the master password can always be used to reset the user password and regain access to the hard drive.

HP recommends that corporate system administrators who choose to enable DriveLock also establish a corporate policy for setting and maintaining master passwords. This should be done to prevent a situation where an employee intentionally or unintentionally sets both DriveLock passwords before leaving the company. In such a scenario, the hard drive would be rendered unusable and require replacement. Likewise, by not setting a master password, system administrators may find themselves locked out of a hard drive and unable to perform routine checks for unauthorized software, other asset control functions, and support.

For users with less stringent security requirements, HP does not recommend enabling DriveLock. Users in this category include personal users or users who do not maintain sensitive data on their hard drives as a common practice. For these users, the potential loss of a hard drive resulting from forgetting both passwords is much greater than the value of the data DriveLock has been designed to protect. Access to Computer Setup and DriveLock can be restricted through the Setup password. By specifying a Setup password and not giving it to end users, system administrators are able to restrict users from enabling DriveLock.

Cable Lock Provision

The rear panel of the computer accommodates a cable lock so that the computer can be physically secured to a work area.

For illustrated instructions, please see the Hardware Reference Guide on the Documentation and Diagnostics CD.

Fault Notification and Recovery

Fault Notification and Recovery features combine innovative hardware and software technology to prevent the loss of critical data and minimize unplanned downtime.

If the computer is connected to a network managed by HP Client Manager, the computer sends a fault notice to the network management application. With HP Client Manager Software, you can also remotely schedule diagnostics to automatically run on all managed PCs and create a summary report of failed tests.

Drive Protection System

The Drive Protection System (DPS) is a diagnostic tool built into the hard drives installed in some HP computers. DPS is designed to help diagnose problems that might result in unwarranted hard drive replacement.

When HP computers are built, each installed hard drive is tested using DPS, and a permanent record of key information is written onto the drive. Each time DPS is run, test results are written to the hard drive. You can use this information to help diagnose conditions that caused you to run the DPS software. Refer to the Troubleshooting Guide on the Documentation and Diagnostics CD for instructions on using DPS.

ENWW Security 23

Surge-Tolerant Power Supply

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

Thermal Sensor

The thermal sensor is a hardware and software feature that tracks the internal temperature of the computer. This feature displays a warning message when the normal range is exceeded, which gives you time to take action before internal components are damaged or data is lost.

24 Chapter 4 Desktop Management ENWW

Serial ATA (SATA) Drive Guidelines and Features

NOTE: HP only supports the use of SATA hard drives on these models of computer. No Parallel

ATA (PATA) drives are supported.

SATA Hard Drives

Serial ATA Hard Drive Characteristics

Number of pins/conductors in data cable 7/7

Number of pins in power cable 15

Maximum data cable length 39.37 in (100 cm)

Data interface voltage differential 400-700 mV

Drive voltages 3.3 V, 5 V, 12 V

Jumpers for configuring drive N/A

Data transfer rate 3.0 Gb/s

SATA Hard Drive Cables

SATA Data Cable

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

Current HP desktop products ship with SATA 3.0 Gb/s hard drives.

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

The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive. See

Data and Power on page 76 for the pinout information.

ENWW SATA Hard Drives 25

SATA

SMART ATA Drives

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

Hard 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.

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

Drive/Partition Capacity Limits

File System Controller Type Operating System Partition Drive

FAT 32 ATA Windows 2000/ XP 32 GB 2 TB

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

Maximum Size

26 Chapter 5 Serial ATA (SATA) Drive Guidelines and Features ENWW

Identifying the Chassis, Routine Care, and Disassembly Preparation

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

CAUTION: When the computer is plugged into an AC power source, voltage is always applied

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

Chassis Designations

The following subsection illustrates the dx2300 and dx2308 chassis design.

Microtower (MT)

Figure 6-1 dx2300

ENWW Chassis Designations 27

Figure 6-2 dx2308

28 Chapter 6 Identifying the Chassis, Routine Care, and Disassembly Preparation ENWW

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.

Generating Static

The following table shows that:

Different activities generate different amounts of static electricity.

●

Static electricity increases as humidity decreases.

●

Event

Walking across carpet

Walking across vinyl floor

Motions of bench worker

Removing DIPs* from plastic tube

Removing DIPs* from vinyl tray

Removing DIPs* from Styrofoam

Removing bubble pack from PCB

Packing PCBs in foam-lined box

*These are then multi-packaged inside plastic tubes, trays, or Styrofoam.

55% 40% 10%

7,500 V

3,000 V

400 V

2,000 V

3,500 V

7,000 V

5,000 V

NOTE: 700 volts can degrade a product.

Preventing Electrostatic Damage to Equipment

Relative Humidity

15,000 V

5,000 V

800 V

700 V

4,000 V

5,000 V

20,000 V

11,000 V

35,000 V

12,000 V

6,000 V

2,000 V

11,500 V

14,500 V

26,500 V

21,000 V

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.

●

ENWW Electrostatic Discharge Information 29

Avoid contact with pins, leads, or circuitry.

●

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

●

foam.

Personal Grounding Methods and Equipment

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

●

Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground cords. To provide proper ground, a strap must be worn snug against bare skin. The ground cord must be connected and fit snugly into the banana plug connector on the grounding mat or workstation.

●

Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use them on both feet with a maximum of one-megohm ± 10% resistance between the operator and ground.

Static Shielding Protection Levels

Method

Antistatic plastic

Carbon-loaded plastic

Metallized laminate

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.

Voltage

1,500

7,500

15,000

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

●

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

●

30 Chapter 6 Identifying the Chassis, Routine Care, and Disassembly Preparation ENWW

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

●

Material handling packages

●

Conductive plastic bags

●

Conductive plastic tubes

●

Conductive tote boxes

●

Opaque shielding bags

●

Transparent metallized shielding bags

●

Transparent shielding tubes

●

ENWW Electrostatic Discharge Information 31

Operating Guidelines

To prevent overheating and to help prolong the life of the computer:

Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.

●

Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented

●

sides of the computer and above the monitor to permit the required airflow.

Never restrict the airflow into the computer by blocking any vents or air intakes. Do not place the

●

keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also restricts airflow.

Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign

●

matter can block the vents and limit the airflow. Be sure to unplug the computer before cleaning the air vents.

Never operate the computer with the cover or side panel removed.

●

Do not stack computers on top of each other or place computers so near each other that they are

●

subject to each other’s re-circulated or preheated air.

If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be

●

provided on the enclosure, and the same operating guidelines listed above will still apply.

Keep liquids away from the computer and keyboard.

●

Never cover the ventilation slots on the monitor with any type of material.

●

Install or enable power management functions of the operating system or other software, including

●

sleep states.

Routine Care

General Cleaning Safety Precautions

Never use solvents or flammable solutions to clean the computer.

Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then

use the cloth on the component.

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

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

Disconnect the keyboard before cleaning it.

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

Cleaning the Computer Case

Follow all safety precautions in General Cleaning Safety Precautions on page 32 before cleaning the computer.

32 Chapter 6 Identifying the Chassis, Routine Care, and Disassembly Preparation ENWW

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.

Cleaning the Keyboard

Follow all safety precautions in General Cleaning Safety Precautions on page 32 before cleaning the keyboard.

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

Computer Case on page 32.

When cleaning debris from under the keys, review all rules in

on page 32 before following these procedures:

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

under the keys.

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

●

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

●

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

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

●

available through many electronic supply outlets.

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

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

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.

Cleaning the Monitor

Cleaning the

General Cleaning Safety Precautions

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

●

ENWW Routine Care 33

Cleaning the Computer Case on page 32.

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

●

Service Considerations

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

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 always on when the computer is in the “On” mode. The cooling

fan is off when the computer is in “Standby,” “Suspend,” or “Off” modes.

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

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)

●

Cleaning the Computer Case on page 32.

Screws

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

●

Phillips #2 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)

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.

CAUTION: Metric screws have a black finish. U.S. screws have a silver finish and are used on

hard drives only.

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

the work area to prevent damage.

34 Chapter 6 Identifying the Chassis, Routine Care, and Disassembly Preparation ENWW

Cables and Connectors

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

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

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

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.

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

Electrostatic Discharge Information on page 29

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.

Lithium Coin Cell Battery

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

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

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

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

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

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

ENWW Service Considerations 35

36 Chapter 6 Identifying the Chassis, Routine Care, and Disassembly Preparation ENWW

Removal and Replacement Procedures— Microtower (MT) Chassis

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

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

Preparation for Disassembly

Close any open software applications.

Exit the operating system.

Remove any diskette or compact disc from the computer.

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

CAUTION: Turn off the computer before disconnecting any cables.

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

as long as the system is plugged into an active AC outlet. In some systems the cooling fan is on even when the computer is in the “Standby,” or “Suspend” modes. The power cord should always be disconnected before servicing a unit.

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

Disconnect all peripheral device cables from the computer.

NOTE: During disassembly, label each cable as you remove it, noting its position and

routing. Keep all screws with the units removed.

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

the wrong screw in an application may damage the unit.

ENWW Preparation for Disassembly 37

Access Panel

Prepare the computer for disassembly (

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

off and that the power cord is disconnected from the electrical outlet.

Disconnect the power cord from the computer and from the power source (1).

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

Slide the access panel back about 6 mm (1/4 inch), then rotate the top of the panel away from the

chassis (pivot on the bottom) and lift it off the unit (3).

Preparation for Disassembly on page 37).

Figure 7-1 Removing the Access Panel

To replace the access panel, reverse the removal steps.

38 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Front Bezel

Prepare the computer for disassembly (

Remove the access panel (

Press down on all three tabs (1) on the left side of the bezel then, rotate the bezel off the chassis (2),

beginning with the left side and then the right side.

Access Panel on page 38 )

Preparation for Disassembly on page 37)

To reinstall the front bezel, reverse the removal procedure.

ENWW Front Bezel 39

Front Drive Bezels

Prepare the computer for disassembly (

Remove the access panel (

Remove the front bezel (

5.25" Drive Bezel Blank

While facing the inside of the front bezel, press the two retaining tabs on the right towards the outer edge of the bezel (1) and pull the bezel blank inwards (2) to remove it.

Preparation for Disassembly on page 37)

Access Panel on page 38)

Front Bezel on page 39)

To install a bezel blank, reverse the removal procedure.

40 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Removing a 3.5” Drive Bezel Blank

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

NOTE: To install a 3.5” bezel blank, press the blank inward from the inside of the front bezel

so that it snaps into place.

ENWW Removing a 3.5” Drive Bezel Blank 41

Memory

The computer comes with double data rate 2 synchronous dynamic random access memory (DDR2SDRAM) dual inline memory modules (DIMMs).

CAUTION: DDR and DDR2 memory modules are not interchangeable.

DDR2-SDRAM DIMMs

The memory sockets on the system board can be populated with up to two industry-standard DIMMs. These memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory support, you can populate the system board with up to 2 GB (2 x 1GB) of memory configured in a highperforming dual channel mode.

For proper system operation, the DDR2-SDRAM DIMMs must be:

industry-standard 240-pin

●

unbuffered PC2-5300 667 MHz-compliant

●

1.8 volt DDR2-SDRAM DIMMs

●

The DDR2-SDRAM DIMMs must also:

support CAS latency 4 for PC2–5300 667 MHz

●

contain the mandatory JEDEC SPD information

●

In addition, the computer supports:

256Mbit, 512Mbit, and 1Gbit non-ECC memory technologies

●

single-sided and double-sided DIMMs

●

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

●

supported

NOTE: The system will not start if you install unsupported DIMMs.

Installing Memory Modules

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

memory, it is important to use memory modules with gold metal contacts to prevent corrosion and/ or oxidation resulting from having incompatible metals in contact with each other.

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

cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

42 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

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

so may damage the module.

Prepare the computer for disassembly (

Remove the access panel and lay the computer down on its side to make it easier to work on. (

Preparation for Disassembly on page 37).

Panel on page 38)

WARNING! To reduce risk of personal injury from hot surfaces, allow the internal system

components to cool before touching.

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 pre-installed module, and install the modules following the numerical order of the sockets.

Access

NOTE: A memory module can be installed in only one way. Match the notch on the module

with the tab on the memory socket.

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).

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

To reassemble the computer, reverse the removal procedure.

ENWW Memory 43

Expansion Cards

Expansion Slot Cover Lock

Prepare the computer for disassembly (

Remove the access panel (

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

On the rear of the computer, remove the screw that secures the slot cover lock in place (1) then, slide

the slot cover lock up and away from the slots to remove it from the computer (2).

Access Panel on page 38)

Preparation for Disassembly on page 37)

To reinstall the slot cover lock, reverse the removal procedure.

44 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

PCI/PCIe Expansion Card

To remove an expansion card continue with step 1.

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

Prepare the computer for disassembly (

Remove the access panel (

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

Remove the slot cover lock (

Access Panel on page 38)

Expansion Slot Cover Lock on page 44)

Preparation for Disassembly on page 37)

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

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

Disconnect any cables attached to the expansion card.

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.

Store the card in anti-static packaging.

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

To install a replacement expansion card go to step 10.

If you are installing an expansion card for the first time you must first remove the expansion slot cover.

Use a flat blade screwdriver to pry out the metal shield on the rear panel that covers the expansion slot. Be sure you remove the appropriate shield for the expansion card you are installing.

Removable Shield Expansion Card Type

Top shield PCI Express x16

Second shield PCI Express x1

Third shield PCI Express x1

Bottom shield PCI

ENWW Expansion Cards 45

With the card aligned so the mounting bracket will fit firmly against the computer backwall, slide the

10.

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

NOTE: 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.

Reinstall the slot cover lock and its retaining screw.

11.

Replace the access panel.

12.

Connect external cables to the installed card, if needed.

13.

Reconfigure the computer, if necessary.

46 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Cable Management

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

Keep cables away from major heat sources like the heatsink.

●

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

●

not designed to take excessive pressure on them.

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

●

wires.

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

●

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

●

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

●

Never crease a SATA data cable.

●

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

●

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

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

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

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

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

damage the cable and result in a failed power supply.

ENWW Cable Management 47

Cable Connections

Cable To Cable Designator

Power Supply System board, 24–pin P1

Power Supply CPU power, 4-pin P2

Power Supply Not used P3

Power Supply Not used P4

Power Supply 2nd SATA Hard drive P5

Power Supply 1st SATA Hard drive P6

Power Supply Diskette drive P7

Power Supply 2nd Optical drive P8

Power Supply 1st Optical drive P9

Cable To PCA Designator

Diskette drive System board FDD1

1st SATA Hard drive System board SATA1

2nd SATA Hard drive System board SATA2

Primary ODD System board SATA3

Second ODD System board SATA4

Heatsink fan System board CPU_FAN1

Chassis fan System board SYS_FAN1

Front power on button System board JFP1

Front I/O USB System board JUSB1

Speaker System board SPKR

Front audio System board AUD1

Second Serial Port System board JCOM1

Media Card Reader System board JUSB2

48 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

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 before removing the hard drive. Failure to do so will result in data loss. After replacing the primary hard drive, you will need to run the Restore Plus! CD to load the Compaq factory-installed files.

Drive Positions

Item

(1)

(2)

(3)

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

Optical media card reader illustrated.

Description Item Description

Optical drive

External 3.5” drive

(4) Internal hard drive (secondary)

(5) Internal hard drive (primary)

ENWW Drives 49

5.25" Drive

Prepare the computer for disassembly (

Remove the access panel (

Remove the front bezel (

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

Remove the two screws that secure the drive in the drive cage (1).

Slide the drive out of the drive cage, as shown in the illustration below (2).

Access Panel on page 38)

Front Bezel on page 39)

Preparation for Disassembly on page 37)

After the drive has been removed from the chassis, remove the two guide screws from the left side

of the drive. These screws should be transferred to the new drive.

To install a drive, reverse the removal procedure.

NOTE: If you are installing a 5.25” drive for the first time into bay 2 you must first remove the

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

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

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

50 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

3.5” Drive

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

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

Prepare the computer for disassembly (

Remove the access panel (

Remove the front bezel (

If the device is a media card reader, disconnect the internal USB cable from the system board. If the

Access Panel on page 38)

Front Bezel on page 39)

Preparation for Disassembly on page 37)

device is a diskette drive, disconnect the power, and data cables from the back of the drive.

Remove the retainer screws that secure the drive in the bay (1) then slide the drive forward and out

of the bay (2).

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

Refer to the table below for proper retainer and guide screw locations.

Device Retainer Screws Guide Screws

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

Media Card Reader 2 (labeled “CR” on chassis) none

NOTE: If you are installing a drive in the external 3.5” drive bay for the first time, use a flat blade

screwdriver to pry out the metal shield covering the bay.

ENWW Drives 51

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

52 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Removing a 3.5” Hard Drive

Prepare the computer for disassembly (

Remove the access panel (

Remove the front bezel (

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

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

Slide the drive out of the rear of the drive bay (2).

Access Panel on page 38)

Front Bezel on page 39)

Preparation for Disassembly on page 37)

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

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

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

ENWW Drives 53

Front I/O Panel Housing Assembly

Prepare the computer for disassembly (

Remove the access panel and rotate the computer so the system board is parallel to the table to make

it easier to work on (

Remove the front bezel (

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

Remove the screw (1) that secures the housing to the chassis and then rotate the housing away from

the chassis and pull the assembly out of the chassis.

Access Panel on page 38)

Front Bezel on page 39)

Preparation for Disassembly on page 37)

To install the housing assembly, reverse the removal procedures.

54 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Power Switch Assembly

Prepare the computer for disassembly (

Remove the access panel and rotate the computer so the system board is parallel to the table to make

it easier to work on (

Disconnect the braided cables from the system board.

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

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

Access Panel on page 38)

Preparation for Disassembly on page 37).

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

ENWW Power Switch Assembly 55

Speaker

Prepare the computer for disassembly (

Remove the access panel (

Remove the front bezel (

Disconnect the speaker cable from the system board.

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

Remove the screw that secures the speaker to the inside of the chassis (1) then, remove the speaker

(2) by sliding it out of the retaining clips..

Access Panel on page 38)

Front Bezel on page 39)

Preparation for Disassembly on page 37)

To install the speaker, reverse the removal procedure.

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

56 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Second Serial Port

Prepare the computer for disassembly (

Remove the access panel (

Disconnect the serial port cable from the system board.

Disconnect the serial port cable from the two clips (1) mounted on the inside of the chassis.

Remove the two retaining screws from the outside of the chassis that secure the serial port to the

chassis (2) and remove the serial port.

Access Panel on page 38).

Preparation for Disassembly on page 37).

ENWW Second Serial Port 57

System Fan

Prepare the computer for disassembly (

Remove the access panel (

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

Cut the tie-wrap (1) at the bottom of the fan that secures the CPU power cable (2) to the fan.

Access Panel on page 38)

Preparation for Disassembly on page 37)

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

To install the fan, reverse the removal procedures.

NOTE: When installing the fan, the CPU power cable must be plugged into the system board

before securing the cable to the bottom of the fan cage. This will ensure that the cable is properly positioned.

58 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Heatsink

Prepare the computer for disassembly (

Remove the access panel and lay the computer down on its side to make it easier to work on. (

Panel on page 38)

Disconnect the heatsink control cable from the system board.

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

Lift the heatsink from atop the processor and set it on its side to keep from contaminating the work

area with thermal grease.

Preparation for Disassembly on page 37)

Access

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

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

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

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

ENWW Heatsink 59

Processor

Prepare the computer for disassembly (

Remove the access panel and lay the computer down on its side to make it easier to work on. (

Panel on page 38).

Disconnect the heatsink control cable from the system board and remove the heatsink.

on page 59

Rotate the locking lever to its full open position (1).

Raise and rotate the microprocessor retainer to its full open position (2)

Carefully lift the processor from the socket (3).

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

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

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

prevent damage to the processor’s solder connections.

Preparation for Disassembly on page 37).

Access

Heatsink

To install a new processor:

Place the processor in its socket and close the retainer.

Secure the locking lever.

If reusing the existing heatsink, go to step 3.

If using a new heatsink, go to step 6.

If reusing the existing heatsink, clean the bottom of the heatsink with the alcohol pad provided in the

spares kit.

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

atop the processor.

60 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Go to step 7.

If using a new heatsink, remove the protective covering from the bottom of the heatsink and place it

in position atop the processor.

Secure the heatsink to the system board and system board tray with the 4 captive screws and attach

the heatsink control cable to the system board.

CAUTION: Heatsink retaining screws should be tightened in diagonally opposite pairs (as

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

NOTE: After installing a new processor onto the system board, always update the system

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

ENWW Processor 61

System Board

Prepare the computer for disassembly (

Remove the access panel.(

Remove the front bezel and lay the computer down on its side to make it easier to work on. (

Bezel on page 39).

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

Disconnect all cables from the system board.

Remove the heatsink from the system board (

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

Slide the system board towards the front of the chassis (2) then, remove it from the chassis.

NOTE: The system board in the computer may look slightly different from the one shown

here.

Access Panel on page 38)

Preparation for Disassembly on page 37)

Heatsink on page 59)

Front

To install the system board, reverse the removal procedure.

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

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

62 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

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.



NOTE: The lifetime of the lithium battery can be extended by plugging the computer into a live

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

WARNING! This computer contains an internal lithium manganese dioxide battery. There is a

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

Do not attempt to recharge the battery.

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

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

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

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

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

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

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

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

equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

Prepare the computer for disassembly (

Remove the access panel (

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

Locate the battery and battery holder on the system board.

Access Panel on page 38).

Preparation for Disassembly on page 37)

ENWW Battery 63

Type 1 Battery Holder

Lift the battery out of its holder.

Slide the replacement battery into position, positive side up.

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

Replace the computer access panel.

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

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

Refer to the Computer Setup (F10) Utility Guide.

64 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Type 2 Battery Holder

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

battery. When the battery pops up, lift it out (1).

To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the

positive side up (2). Push the other edge down until the clamp snaps over the other edge of the battery.

Replace the computer access panel.

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

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

Refer to the Computer Setup (F10) Utility Guide.

ENWW Battery 65

Type 3 Battery Holder

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

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

Replace the computer access panel.

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

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

Refer to the Computer Setup (F10) Utility Guide.

66 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Power Supply

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

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

Prepare the computer for disassembly (

Remove the access panel (

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

Cut the tie wrap (1) at the bottom of the fan that secures the CPU power cable (2) to the fan cage.

Access Panel on page 38).

Preparation for Disassembly on page 37)

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

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

ENWW Power Supply 67

To install the power supply, reverse the removal procedure.

NOTE: When attaching the CPU power cable to the system board, use the tie-wrap provided in

the spares kit to secure the cable to the lower right corner of the fan cage. This will prevent the wire bundle from interfering with the chassis fan blades.

68 Chapter 7 Removal and Replacement Procedures— Microtower (MT) Chassis ENWW

Connector Pin Assignments

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.

Keyboard

Connector and Icon Pin Signal

Mouse

Connector and Icon Pin Signal

Data

Unused

Ground

+5 VDC

Clock

Unused

Data

Unused

Ground

+5 VDC

Clock

Unused

Ethernet BNC

Connector and Icon Pin Signal

ENWW Keyboard 69

Data

Ground

Ethernet RJ-45

Connector and Icon Pin Signal

Ethernet AUI

Connector and Icon

Pin Signal

(+) Transmit Data

(-) Transmit Data

(+) Receive Data

Unused

(-) Receive Data

Unused

Ground

Negative AUI Differential Collision

Positive AUI Differential Collision

Negative AUI Differential Transmit

Positive AUI Differential Transmit

Ground

Negative AUI Differential Receive

Positive AUI Differential Receive

+12V

Ground

Unused

70 Appendix A Connector Pin Assignments ENWW

Parallel Interface

Connector and Icon

Pin Signal

9 Data Bit 7 18–25Signal Ground

Strobe

Data Bit 0

Data Bit 1

Data Bit 2

Data Bit 3

Data Bit 4

Data Bit 5

Data Bit 6

Pin Signal

Acknowledge

Busy

Paper End

Select

Auto Linefeed

Error

Initialize Printer

Select IN

Serial Interface, Powered and Non-Powered

Connector and Icon Pin Signal

Carrier Detect (12V if powered)

Receive Data

USB

Connector and Icon Pin Signal

Transmit Data

Data Terminal Ready

Signal Ground

Data Set Ready

Request to Send

Clear to Send

Ring Indicator (5V if powered)

+5 VDC

- Data

+ Data

Ground

ENWW Parallel Interface 71

Diskette Drive Power

Connector and Icon Pin Signal

Microphone

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

Headphone

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

1 (Tip)

2 (Ring)

3 (Shield)

1 (Tip)

2 (Ring)

+5 VDC

Ground

Reserved (+12 Volts)

Audio_left

Audio_Right

Ground

Audio_left

Power_Right

Line-in Audio

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

Line-out Audio

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

3 (Shield)

1 (Tip)

2 (Ring)

3 (Shield)

1 (Tip)

2 (Ring)

3 (Shield)

Ground

Audio_In_Left

Audio_In_Right

Ground

Audio_Out_Left

Audio_Out_Right

Ground

72 Appendix A Connector Pin Assignments ENWW

External Infrared Transceiver

Connector and Icon Pin Signal

Monitor

Connector and Icon

Pin Signal

Transmit

Receive

Ground

Mode

Not Used

Red Analog

Green Analog

Blue Analog

Not used

Ground

+5V (fused)

Ground

Not used

DDC Serial Data

Horizontal Sync

Vertical Sync

DDC Serial Clock

ENWW External Infrared Transceiver 73

Diskette Drive Standard Data Cable



Connector

Pin Signal Pin Signal Pin Signal

Ground

Low density

Key

Media — ID

Ground

No Signal

Ground

Index

Ground

Reserved

Ground

Reserved

Ground

Motor On

Ground

Direction In

Ground

Step

Ground

Write data

Ground

Track 00

Ground

Write Protect

Ground

Read Data

Ground

Side 1 Select

Ground

Disk Change

Drive Select

24-Pin Power

Connector

Pin Signal Pin Signal Pin Signal Pin Signal

+3.3V

GND

+5V

GND

+5V

GND

POK

+5 Vaux

+12V

+3.3V

Write Gate

+3.3V

–12V

GND

PSON

GND

open

+5V

GND

74 Appendix A Connector Pin Assignments ENWW

24-Pin MicroFit Power



Connector

Pin Signal Pin Signal Pin Signal Pin Signal

+5 Vaux

GND

+5V

PS_ON

GND

PWRGD

+3.3V

Tach

GND

Fan-CMD

4-Pin Power (for CPU)

Connector and Icon Pin Signal

+12V

+5V Sense

GND

+5V

+3.3V

GND

+3.3V

Sense

+3.3V

GND

-12V

6-Pin Power (for CPU)

Connector and Icon Pin Signal

GND

+12V CPU

-12V CPU

GND

12V CPU

+12V

ENWW 24-Pin MicroFit Power 75

SATA Data and Power

Drive Connector

Pin Signal Pin Signal Pin Signal Pin Signal

S1S5Ground

B-

Ground

B-

V 5

P13

V 12

*S = Data, P = Power

PCI Express

x1, x4, x8, and x16 PCI Express Connector

S2S6A+

B+

V 3.3

Ground

P10

Ground

P14

V12

S3S7A-

P11

P15

Ground

V 3.3

V 5

Reserved

V 12

S4 Ground

Ground

V 5

P12

Ground

Pin A

Signal Pin Signal Pin Signal Pin Signal Pin Signal

PRSNT1

+12V

GND

JTAG2

PERn(2)

GND

PERp3

PERn3

51 GND 56 PERp9 61 PERn10 66 GND 71 GND

JTAG3

JTAG4

JTAG5

+3.3V

GND

RSVD

GND

PERp4

PERST#

GND

REFCLK+

REFCLK-

GND

PERn4

GND

PERp5

PERn5

PERp0

PERn0

GND

RSVD

GND

PERp6

PERn6

GND

PERp1

PERn1

GND

PERp2

GND

PERp7

PERn7

GND

RSVD

76 Appendix A Connector Pin Assignments ENWW

PERp8

PERN8

GND

PERp14

PERn14

GND

PERp15

Pin B information is on the next page

NOTE: x1 PCI Express uses pins 1-18

x4 PCI Express uses pins 1-32

x8 PCI Express uses pins 1-49

x16 PCI Express uses pins 1-8

PERn9

GND

PERp10

8182PERn15

GND

PERp11

PERn11

GND

PERp12

PERn12

GND

PERp13

PERn13

GND

PCI Express

x1, x4, x8, and x16 PCI Express Connector

Pin B

Signal Pin Signal Pin Signal Pin Signal Pin Signal

+12V

RSVD

GND

SMCLK

GND

PETp3

SMDAT

GND

+3.3 V

JTAG1

3.3vAux

PRSNT2#

GND

WAKE#

RSVD

GND

PETp0

PETn0

GND

PETp5

GND

PETp1

PETn1

PETp6

PRTn6

GND

PETp2

PETn2

GND

PETn7

GND

PETn3

GND

RSVD

PETp4

PETn4

GND

PETn5

GND

PETp7

PRSNT2#

GND

PETp8

ENWW PCI Express 77

PETn8

GND

PETp9

PETn9

GND

PETp15

PETn15

GND

Pin B information is on the next page

NOTE: x1 PCI Express uses pins 1-18

x4 PCI Express uses pins 1-32

x8 PCI Express uses pins 1-49

x16 PCI Express uses pins 1-8

GND

PETp10

PETn10

GND

8182PRSNT2#

RSVD

GND

PETp11

PETn11

GND

PETp12

PETn12

GND

PETp13

PETn13

GND

PETp14

PETn14

DVI Connector

Connector and Icon

Pin Signal

T.M.D.S. Data2–

T.M.D.S. Data2+

T.M.D.S. Data2/4 Shield

T.M.D.S. Data4–

T.M.D.S. Data4+

DDC Clock

DDC Data

No Connect

T.M.D.S. Data1–

T.M.D.S. Data1+

Pin Signal

T.M.D.S. Data3+

+5V Power

Ground (for +5V)

Hot Pug Detect

T.M.D.S. Data0–

T.M.D.S. Data0+

T.M.D.S. Data0/5 Shield

T.M.D.S. Data5–

T.M.D.S. Data5+

T.M.D.S. Data Shield

T.M.D.S. Data1/3 Shield

T.M.D.S. Clock+

78 Appendix A Connector Pin Assignments ENWW

12 T.M.D.S. Data3– 24 T.M.D.S. Clock-

ENWW DVI Connector 79

80 Appendix A Connector Pin Assignments ENWW

Power Cord Set Requirements

The power supplies on some computers have external power switches. The voltage select switch feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power supplies on those computers that do not have external power switches are equipped with internal switches that sense the incoming voltage and automatically switch to the proper voltage.

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.

General Requirements

The requirements listed below are applicable to all countries:

The power cord must be approved by an acceptable accredited agency responsible for evaluation

in the country where the power cord set will be installed.

The power cord set must have a minimum current capacity of 10A (7A Japan only) and a nominal

voltage rating of 125 or 250 volts AC, as required by each country’s power system.

The diameter of the wire must be a minimum of 0.75 mm

must be between 1.8 m (6 feet) and 3.6 m (12 feet).

The power cord should be routed so that it is not likely to be walked on or pinched by items placed upon it or against it. Particular attention should be paid to the plug, electrical outlet, and the point where the cord exits from the product.

WARNING! Do not operate this product with a damaged power cord set. If the power cord set

is damaged in any manner, replace it immediately.

or 18AWG, and the length of the cord

Japanese Power Cord Requirements

For use in Japan, use only the power cord received with this product.

CAUTION: Do not use the power cord received with this product on any other products.

Country-Specific Requirements

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

ENWW General Requirements 81

Country Accrediting Agency

Australia (1)

Austria (1)

Belgium (1)

Canada (2)

Denmark (1)

Finland (1)

France (1)

Germany (1)

The flexible cord must be Type HO5VV-F, 3-conductor, 0.75mm

EANSW

OVE

CEBC

CSA

DEMKO

SETI

UTE

VDE

Italy (1)

Japan (3)

Norway (1)

Sweden (1)

Switzerland (1)

United Kingdom (1)

United States (2)

conductor size. Power cord set fittings (appliance coupler

IMQ

METI

NEMKO

SEMKO

SEV

BSI

and wall plug) must bear the certification mark of the agency responsible for evaluation in the country where it will be used.

The flexible cord must be Type SVT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding

type with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A, 250V) configuration.

Appliance coupler, flexible cord, and wall plug must bear a “T” mark and registration number in accordance with the

Japanese Dentori Law. Flexible cord must be Type VCT or VCTF, 3-conductor, 0.75 mm

conductor size. Wall plug must be

a two-pole grounding type with a Japanese Industrial Standard C8303 (7A, 125V) configuration.

82 Appendix B Power Cord Set Requirements ENWW

Troubleshooting

Safety and Comfort

WARNING! Misuse of the computer or failure to establish a safe and comfortable work

environment may result in discomfort or serious injury. Refer to the Safety & Comfort Guide on the Documentation and Diagnostics CD and available on the Web site at

ergo for more information on choosing a workspace and creating a safe and comfortable work

environment.

Helpful Hints

If you encounter problems with the computer, monitor, or software, see the following list of general suggestions before taking further action:

http://www.hp.com/

Check that the computer and monitor are plugged into a working electrical outlet.

●

Check to see that the voltage select switch (some models) is set to the appropriate voltage for your

●

region (115V or 230V).

Check to see that the computer is turned on and the green power light is on.

●

Check to see that the monitor is turned on and the green monitor light is on.

●

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

●

Press and hold any key. If the system beeps, then the keyboard should be operating correctly.

●

Check all cable connections for loose connections or incorrect connections.

●

Wake the computer by pressing any key on the keyboard or pressing the power button. If the system

●

remains in suspend mode for more than four seconds, shut down the computer by pressing and holding the power button for at least four seconds then press the power button again to restart the computer. If the system will not shut down, unplug the power cord, wait a few seconds, then plug it in again. The computer will restart if automatic start on power loss is set in Computer Setup. If it does not restart, press the power button to start the computer.

Reconfigure your computer after installing a non–plug and play expansion board or other option.

●

Be sure that all the needed device drivers have been installed. For example, if you are using a printer,

●

you need a driver for that model printer.

Remove all bootable media (diskette, CD, or USB device) from the system before turning it on.

●

ENWW Safety and Comfort 83

If you have installed an operating system other than the factory-installed operating system, check to

●

be sure that it is supported on the system.

If the system has multiple video sources (embedded, PCI, or PCI-Express adapters) installed 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 Setup.

CAUTION: When the computer is plugged into an AC power source, there is always voltage

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

84 Appendix C Troubleshooting ENWW

Solving General Problems

You may be able to easily resolve the minor problems described in this section.

Computer will not turn on.

Cause Solution

Cables to the external power source are unplugged. Ensure that cables connecting the computer to the external

power source are plugged in properly and the wall outlet is active.

Voltage selector switch on rear of computer chassis (some models) not switched to correct line voltage (115V or 230V).

A defective PCI card has been installed. Remove any expansion board that was just installed.

Drive data or power supply cables may not be properly connected.

The unit temperature was exceeded. The fan may be blocked.

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

Cause

Software control of the power switch is not functional.

Computer will not respond to USB keyboard or mouse.

Cause Solution

Select the proper AC voltage using the selector switch.

Reseat drive data and power supply cables.

Unit is in an exceedingly hot environment. Let it cool down.

Ensure that computer air vents are not blocked and the

internal fan is running.

Solution

Press and hold the power button for at least four seconds

until the computer turns off.

Disconnect the power cord from the electrical outlet.

System has locked up. Restart computer.

Keyboard or mouse is not connected to computer. Connect keyboard and mouse cables to computer.

Computer is in standby mode. To resume from standby mode, press the power button or

press any key.

CAUTION: When attempting to resume from

standby mode, do not hold down the power button

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

Computer date and time display is incorrect.

Cause

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

Solution

First, reset the date and time under Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery.

ENWW Solving General Problems 85

Computer date and time display is incorrect.

Cause Solution

NOTE: Connecting the computer to a live AC outlet

prolongs the life of the RTC battery.

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

Cause

The Num Lock key may be on. Press the Num Lock key. The Num Lock light should not be on if

Poor performance is experienced.

Cause Solution

Processor is hot.

Hard drive is full. Transfer data from the hard drive to create more space on the

Low on memory. Add more memory.

Hard drive fragmented. Defragment hard drive.

Program previously accessed did not release reserved memory back to the system.

Solution

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

Make sure airflow to the computer is not blocked. Leave a

10.2-cm (4-inch) clearance on all vented sides of the computer and above the monitor to permit the required airflow.

Make sure fans are connected and working properly

(some fans only operate when needed).

Make sure the processor heatsink is installed properly.

hard drive.

Restart the computer.

Virus resident on the hard drive. Run virus protection program.

Too many applications running.

Close unnecessary applications to free up memory. Some

applications run in the background and can be closed by right-clicking on their corresponding icons in the task tray. To prevent these applications from launching at startup, go to Start > Run (Microsoft Windows XP) or Start > All Programs > Accessories > Run (Microsoft Windows Vista) and type msconfig. On the Startup tab of the

System Configuration Utility, uncheck applications that you do not want to launch automatically.

CAUTION: Do not prevent applications from

launching at startup that are required for proper system operation.

Add more memory.

86 Appendix C Troubleshooting ENWW

Poor performance is experienced.

Cause Solution

Some software applications, especially games, are stressful on the graphics subsystem

Cause unknown. Restart the computer.

Blank screen (no video).

Cause Solution

Monitor is not turned on and the monitor light is not on. Turn on the monitor and check that the monitor light is on.

The cable connections are not correct. Check the cable connection from the monitor to the computer

You may have a screen blanking utility installed or energy saver features are enabled.

Computer is in standby mode. Press the power button to resume from standby mode.

Lower the display resolution for the current application or

consult the documentation that came with the application for suggestions on how to improve performance by adjusting parameters in the application.

Add more memory.

Upgrade the graphics solution.

and to the electrical outlet.

Press any key or click the mouse button and, if set, type your password.

CAUTION: When attempting to resume from

standby mode, do not hold down the power button

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

You are using a fixed-sync monitor and it will not sync at the resolution chosen.

Monitor cable is plugged into the wrong connector. Ensure that the monitor is plugged into an active connector on

Bad monitor. Try a different monitor.

Power LED is flashing and computer will not start.

Cause

Internal error has occurred and the computer is flashing a code. Refer to Interpreting Diagnostic Lights on page 89 to interpret

Be sure that the monitor can accept the same horizontal scan rate as the resolution chosen.

the rear of the computer. If another connector is available, connect the monitor to that connector and reboot the system.

Solution

the error code.

ENWW Solving General Problems 87

Solving Hardware Installation Problems

You may need to reconfigure the computer when you add or remove hardware, such as an additional drive or expansion card. If you install a plug and play device, the Windows operating system automatically recognizes the device and configures the computer. If you install a non–plug and play device, you must reconfigure the computer after completing installation of the new hardware. In the Windows operating system, use the Add Hardware Wizard and follow the instructions that appear on the screen.

WARNING! When the computer is plugged into an AC power source, voltage is always applied

to the system board. To reduce the risk of personal injury from electrical shock, rotating fans, and/ or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.

Look for the LED on the system board. If the LED is illuminated, the system still has power. Power off the computer and remove the power cord before proceeding.

A new device is not recognized as part of the system.

Cause

Device is not seated or connected properly. Ensure that the device is properly and securely connected and

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

Power switch of new external device is not turned on. Turn off the computer, turn on the external device, then turn 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.

USB ports on the computer are disabled in Computer Setup. Enter Computer Setup (F10) and enable the USB ports.

Computer will not start.

Cause Solution

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

Solution

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.

the computer to integrate the device with the computer system.

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

Use Windows 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.

Review the documentation that came with the system to

determine if you are using the correct memory modules and to verify the proper installation.

Observe the LED lights on the front of the computer. See

Interpreting Diagnostic Lights on page 89 to determine

possible causes.

If you still cannot resolve the issue, contact Customer

Support.

88 Appendix C Troubleshooting ENWW

Interpreting Diagnostic Lights

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

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

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

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

Replace the system board or power supply only as the last resort.

Activity Possible Cause Recommended Action

Green Power LED On. Computer on. None

Green Power LED flashes every one second.

Green Power LED flashes every two seconds.

Green Power LED flashes four times per second.

Processor thermal protection activated:

A fan may be blocked or not turning.

The heatsink/fan assembly is not properly attached to the processor.

Computer in Suspend to RAM mode (some models only) or normal Suspend mode.

Pre-video memory error.

Ensure that the computer air vents are not blocked

and the processor cooling fan is running.

Open hood, press power button, and see if the

processor fan spins. If the processor fan is not spinning, make sure the fan's cable is plugged onto the system board header. Ensure the fan is fully/ properly seated or installed.

WARNING! Rotating fan blades can

cause serious bodily harm. Be sure to keep your hands away from the rotating blades.

If fan is plugged in and seated properly, but is not

spinning, then replace processor fan.

Reseat processor heatsink and verify that the fan

assembly is properly attached.

Contact an authorized reseller or service provider.

Press any key or move the mouse to wake the computer.

CAUTION: To avoid damage to the DIMMs or

the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module.

Reseat DIMMs.

Replace DIMMs one at a time to isolate the faulty

module.

Replace third-party memory with HP memory.

Replace the system board.

ENWW Interpreting Diagnostic Lights 89

Activity Possible Cause Recommended Action

Green Power LED flashes six times, once every second, followed by a two second pause.

Green Power LED flashes eight times, once every second, followed by a two second pause.

System does not power on and LEDs are not flashing.

Pre-video graphics error. For systems with a graphics card:

Reseat the graphics card.

Replace the graphics card.

Replace the system board.

For systems with integrated graphics, replace the system board.

Invalid ROM based on bad checksum.

System unable to power on. Press and hold the power button for less than 4 seconds.

Reflash the system ROM with the latest BIOS image.

Replace the system board.

If the hard drive LED turns green, the power button is working correctly. Try the following:

Check that the voltage selector (some models),

located on the rear of the power supply, is set to the appropriate voltage. Proper voltage setting depends on your region.

Replace the system board.

Press and hold the power button for less than 4 seconds. If the hard drive LED does not turn on green then:

Check that the unit is plugged into a working AC

outlet.

Open hood and check that the power button harness

is properly connected to the system board.

Check that both power supply cables are properly

connected to the system board.

Check to see if the 5V_aux light on the system board

is turned on. If it is turned on, then replace the power button harness. If the problem persists, replace the system board.

If the 5V_aux light on the system board is not turned

on, remove the expansion cards one at a time until the 5V_aux light on the system board turns on. It the problem persists, replace the power supply.

90 Appendix C Troubleshooting ENWW

Index

Symbols/Numerics

24–pin MicroFit power pin

assignments 75

24–pin power pin

assignments 74

4–pin power pin assignments 75

5.25 drive bezel blank 40

6–pin power pin assignments 75

access panel, removal and

replacement 38

adding devices 1

Backup and Recovery Manager 2 battery

disposal 35 removal and replacement 63

bezel blank, 5.25" drive 40 BIOS

Boot Block Emergency Recovery

Mode 21

Boot Block Emergency Recovery

Mode 21

cable connections 48 cable lock provision 23 cable management 47 cable pinouts

SATA data 25

cautions

AC power 27 adding devices 1 cables 35 cooling fan 34 electrostatic discharge 29 keyboard cleaning 33

keyboard keys 33 operating system installation 1 protecting ROM 21

changing operating systems,

important information 22 chasis types, illustrated 27 chassis

MT illustrated 27

cleaning

computer 32 mouse 34

safety precautions 32 computer cleaning 32 connector pin assignments 69 country power cord set

requirements 81

device drivers, installing 1 diagnostic tool for hard drives 23 diagnostics utility 13 disassembly preparation 37 diskette drive cable pin

assignments 74

diskette drive power pin

assignments 72

drive

5.25" removal and replacement 50

hard drive removal and

replacement 51

drive positions 49 drive, protecting 23 DriveLock

applications 23 using 22

DVI pin assignments 78

electrostatic discharge (ESD)

preventing damage 29

Emergency Recovery Mode, Boot

Block 21

ethernet

AUI pin assignments 70 BNC pin assignments 69 RJ-45 pin assignments 70

expansion card removal and

replacement 45

expansion slot cover lock removal

and replacement 44

fan, power supply 34 Fault Notification and Recovery

HP Client Manager 23

front bezel removal and

replacement 39 front drive bezel 40 front I/O panel removal and

replacement 54

grounding methods 30

hard drive

proper handling 35 removal and replacement 51,

SATA characteristics 25 hard drives, diagnostic tool 23 headphone pin assignments 72 heatsink removal and

replacement 59

HP Backup and Recovery

Manager 2

HP Insight Diagnostics 13

ENWW Index 91

infrared (IR) transceiver, enternal,

pin assignments 73 Insight Diagnostics 13 internal temperature of

computer 24 Internet addresses. See Web sites

keyboard

cleaning 33 pin assignments 69

line—in audio pin assignments 72 line—out audio pin

assignments 72

memory

specifications 42

memory, removal and

replacement 42 microphone pin assignments 72 monitor

pin assignments 73

mouse

pin assignments 69 mouse cleaning 34 MT

chassis, illustrated 27

operating guidelines 32 operating systems, important

information about 22

overheating, prevention 32

parallel interface pin

assignments 71 PCI Express pin assignments 76 power cord set requirements

country specific 81

power supply

fan 34

removal and replacement 67 power supply, surge-tolerant 24 power switch assembly, removal

and replacement 55

Preboot Execution Environment

(PXE) 20 preparation for disassembly 37 processor removal and

replacement 60 protecting hard drive 23 protecting ROM, caution 21 PXE (Preboot Execution

Environment) 20

recovery

creating disc recovery set 2

Recovery Mode, Boot Block

Emergency 21 remote setup 20 Remote System Installation 20 removal and replacement

5.25" drive 50 access pannel 38 battery 63 expansion card 45 expansion slot cover lock 44 front bezel 39 front I/O panel 54 hard drive 51, 53 heatsink 59 memory 42 power switch assembly 55 processor 60 speaker 56 system board 62 system fan 58

removal and replacement, serial

port 57 Restore Plus! CD 2 ROM

flash 21

safety precautions

cleaning 32

SATA

connectors on system

board 25 data cable pinouts 25 hard drive characteristics 25 pin assignments 76

screws, correct size 34

SDRAM (synchronous dynamic

random access memory 42

security

cable lock 23 DriveLock 22

serial interface pin

assignments 71

serial port, removal and

replacement 57 service considerations 34 software

Drive Protection System 23 HP Backup and Recovery

Manager 2 HP Insight Diagnostics 13 Remote System Installation 20 Restore Plus! CD 2 servicing computer 34

spare part number

tamper-resistent wrench 34 Torx T-15 screwdriver 34

speaker, removal and

replacement 56

specifications

memory 42

static electricity 29 surge-tolerant power supply 24 system board

SATA connectors 25

system board removal and

replacement 62

system fan, removal and

replacement 58

tamper-proof screws

tool 34

temperature control 32 temperature, internal computer 24 thermal sensor 24 tools, servicing 34 Torx T15 screwdriver 34

URLs (Web sites). See Web sites USB pin assignments 71

ventilation, proper 32

92 Index ENWW

HP COMPAQ DX2308, COMPAQ DX2300 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Install the Operating System

Installing or Upgrading Device Drivers

HP Backup and Recovery Manager

Computer Setup (F10) Utility

Computer Setup (F10) Utilities

Using Computer Setup (F10) Utilities

Computer Setup—System Information

Computer Setup—Main

Computer Setup—Advanced

Computer Setup—Boot

Computer Setup—PC Health

Computer Setup—Actions

Recovering the Configuration Settings

Backing Up the CMOS

Restoring the CMOS

HP Insight Diagnostics

HP Insight Diagnostics

Accessing HP Insight Diagnostics

Survey Tab

Test Tab

Status Tab

Log Tab

Help Tab

Saving and Printing Information in HP Insight Diagnostics

Downloading the Latest Version of HP Insight Diagnostics

Desktop Management

Remote System Installation

ROM Flash

Boot Block Emergency Recovery Mode

HP Web Site Support

Security

DriveLock

Using DriveLock

DriveLock Applications

Cable Lock Provision

Fault Notification and Recovery

Drive Protection System

Surge-Tolerant Power Supply

Thermal Sensor

Serial ATA (SATA) Drive Guidelines and Features

SATA Hard Drives

SATA Hard Drive Cables

SATA Data Cable

SMART ATA Drives

Hard Drive Capacities

Identifying the Chassis, Routine Care, and Disassembly Preparation

Chassis Designations

Microtower (MT)

Electrostatic Discharge Information

Generating Static

Preventing Electrostatic Damage to Equipment

Personal Grounding Methods and Equipment

Grounding the Work Area

Recommended Materials and Equipment

Operating Guidelines

Routine Care

General Cleaning Safety Precautions

Cleaning the Computer Case

Cleaning the Keyboard

Cleaning the Monitor

Cleaning the Mouse

Service Considerations

Power Supply Fan

Tools and Software Requirements

Screws

Cables and Connectors

Hard Drives

Lithium Coin Cell Battery

Removal and Replacement Procedures— Microtower (MT) Chassis

Preparation for Disassembly

Access Panel

Front Bezel

Front Drive Bezels

5.25" Drive Bezel Blank

Removing a 3.5” Drive Bezel Blank

Memory