HP m7246n, m7248n, m7250n, m7257c, m7259c Service Guide

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Upgrading and Servicing Guide

The information in this document is subject to change without notice.

Hewlett-Packard

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Table of Contents

Safety Information......................................................................... 1

Opening and Closing the PC........................................................... 1

Preparing the PC ......................................................................................1

Before Opening the PC .............................................................................2

After Closing the PC..................................................................................2

Removing the Side Panel ...........................................................................2

Replacing the Side Panel ...........................................................................3

Removing the Front Panel...........................................................................3

Replacing the Front Panel ..........................................................................3

Locating Components Inside the PC ............................................................4

Removing and Replacing Drives..................................................... 4

Removing an Optical Drive........................................................................ 4

Replacing or Adding an Optical Drive ........................................................5

Removing a Memory Card Reader .............................................................5

Installing a Memory Card Reader ...............................................................6

Removing a Hard Disk Drive ......................................................................6

Replacing a Hard Disk Drive......................................................................8

Adding an Additional Hard Disk Drive........................................................9

Adding Memory .......................................................................... 11

Removing a Memory Module ................................................................... 11

Installing a Memory Module ....................................................................12

Removing or Installing an Add-in Card ........................................ 12

Removing an Add-in Card .......................................................................13

Installing an Add-in Card.........................................................................13

Replacing the Battery .................................................................. 14

Upgrading and Servicing Guide

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Upgrading and Servicing Guide

Safety Information

Opening and Closing the PC

This product has not been evaluated for connection to an “IT” power system (an AC distribution system with no direct connection to earth, according to IEC 60950).

WARNING: Please read “Safety Information” in your Warranty and Support Guide before installing and connecting your system to the electrical power system.

The Upgrading and Servicing Guide provides instructions on how to remove and replace hardware components of your PC.

To open the lid of your PC, gently push down on the lid before sliding it back.

Preparing the PC

Before you upgrade any component in your PC, you need to prepare the PC so that you can safely handle it and the components.

Read the following items before attempting to upgrade or service the PC:

•

These procedures assume familiarity with the general terminology associated with personal computers and with the safety practices and regulatory compliance required for using and modifying electronic equipment.

•

Write down and save the system model and serial numbers, all installed options, and other information about the system. It’s easier to consult this information than to open up and examine the PC.

•

It is recommended that you use an antistatic wrist strap and a conductive foam pad when working on the system.

ARNING: Always disconnect the modem cord from the telephone system, and then disconnect the PC from the power source before removing the front and side panels of the PC. Failure to do so before you open the PC or do any procedures can result in personal injury or equipment damage.

Upgrading and Servicing Guide 1

Before Opening the PC

To avoid injury and equipment damage, always follow this procedure in this order before opening the PC:

1 Remove any diskette or optical disc (CD or DVD)

from the PC.

2 Click the Start button on the taskbar. Click Turn

Off Computer and then click Turn Off again.

3 Disconnect the modem/telephone cable, if present.

WARNING: To reduce the risk of personal injury from electrical shock or hot surfaces, disconnect the power cord from the wall outlet, and allow the internal system components to cool before touching.

4 Disconnect the power cord from the electrical outlet

and then from the PC.

5 Disconnect all other attached cables (such as the

keyboard, mouse, and monitor).

6 Disconnect all external devices.

3 Reconnect external devices. 4 Turn on the PC and all peripherals such as the

monitor.

5 If you installed an add-in card, install any software

drivers supplied by the card manufacturer.

Removing the Side Panel

CAUTION: Static electricity can damage the electronic components of the PC or optional equipment. Ensure that you are discharged of static electricity by briefly touching a grounded metal object.

After Closing the PC

To avoid injury and equipment damage, always follow this procedure in this order after closing the PC:

1 Reconnect the power cord.

WARNING: To reduce the risk of electrical shock, fire, or damage to the equipment, do not plug telecommunications or telephone connectors into the network interface card (NIC) (labeled as an Ethernet connector).

2 Reconnect the modem/telephone cable and all

other attached cables (such as the keyboard, mouse, and monitor).

1 See “Before Opening the PC” on page 2. 2 Loosen the two thumbscrews on the right side of the

back panel. The first time you loosen these screws, you may need to use a Phillips screwdriver.

WARNING: Beware of sharp edges inside the chassis.

3 Slide the panel back about 2.5 cm (1 inch), lift it

off the PC, and set it aside.

NOTE:

You do not need to remove the other side

panel to replace the hardware listed in this guide.

Upgrading and Servicing Guide

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