Dell OptiPlex GX260 User Manual

Dell™ OptiPlex™ GX260 Service Manual

Before You Begin Computer Cover Inside Your Computer Badge Battery Chassis Intrusion Switch Control Panel Cards and Adapters Drives Front-Panel Inserts I/O Panel Memory Microprocessor Power Supply System Board

NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the

problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden. Trademarks used in this text: Dell, the DELL logo, and OptiPlex are trademarks of Dell Computer Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products.

Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

March 2003 Rev. A02

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While you work, periodically touch an unpainted metal surface on the computer chassis to dissipate any static electricity

Before You Begin

Dell™ OptiPlex™ GX260 Service Manual

Getting Started Recommended Tools Precautionary Measures Protecting Against Electrostatic Discharge

Getting Started

This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell™ OptiPlex™ GX260 small form-factor, small desktop, and small mini-tower computers. Unless otherwise noted, each procedure assumes that the following conditions exist:

You have performed the steps in "Precautionary Measures." You have opened the computer cover.

Recommended Tools

The GX260 computer is primarily a tool-less one, but certain procedures (such as removing the heat-sink blower or the control panel) require the use of one or more of the following tools:

Small flat-blade screwdriver #1 and #2 Phillips-head screwdrivers An 8-inch, #2 Phillips-head screwdriver

Also, Dell recommends that you use a wrist grounding strap as explained in "Precautionary Measures

Precautionary Measures

Use the following safety guidelines to help protect your computer from potential damage and to ensure your own personal safety.

CAUTION: Do not attempt to service the computer yourself, except as explained in your online Dell

documentation or otherwise provided to you. Always follow installation and service instructions closely.

NOTICE: To help avoid possible damage to the system board, wait 5 seconds (or wait until the standby light is

extinguished) after turning off the computer and unplugging the power cord before removing a component from the system board or disconnecting a device from the computer.

Before you start to work on the computer, perform the following steps in the sequence listed:

1. Perform an orderly computer shutdown using the operating system menu.

2. Turn off the computer and all attached devices.

3. Ground yourself by touching an unpainted metal surface on the chassis, such as the metal around the card-slot openings at the back of the computer, before touching anything inside your computer.

that might harm internal components.

4. Disconnect your computer and devices from their power sources. Also, disconnect any telephone or telecommunication lines from the computer.

Doing so reduces the potential for personal injury or shock.

In addition, take note of these safety guidelines when appropriate:

When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself. Some cables have a connector with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before disconnecting the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a cable, make sure both connectors are correctly oriented and aligned.

Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metal mounting bracket. Hold a component such as a microprocessor chip by its edges, not by its pins.

Protecting Against Electrostatic Discharge

Static electricity can harm delicate components inside your computer. To prevent static damage, discharge static electricity from your body before you touch any of your computer's electronic components, such as the microprocessor. You can do so by touching an unpainted metal surface on the computer chassis.

As you continue to work inside the computer, periodically touch an unpainted metal surface to remove any static charge your body may have accumulated.

You can also take the following steps to prevent damage from electrostatic discharge (ESD):

When unpacking a static-sensitive component from its shipping carton, do not remove the component from the antistatic packing material until you are ready to install the component in your computer. Just before unwrapping the antistatic packaging, be sure to discharge static electricity from your body.

When transporting a sensitive component, first place it in an antistatic container or packaging. Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads and workbench pads.

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Computer Cover

Dell™ OptiPlex™ GX260 Service Manual

Opening the Computer Cover Closing the Computer Cover

Opening the Computer Cover

Small Form-Factor Computer

1 security cable slot 2 padlock ring 3 release buttons (one on each side)

Small Desktop Computer

1 security cable slot 2 padlock ring 3 release buttons (one on each side)

Small Mini-Tower Computer

1 release buttons 2 security cable slot 3 padlock ring

1. Remove the padlock from the padlock ring, if present.

NOTICE: Ensure that sufficient space exists to support the open cover—at least 30 cm (1 ft) of desktop space.

NOTICE: Open the computer cover slowly to prevent damage to the system cables.

2. To open the cover on the small form-factor or small desktop computer:

a. Remove the computer stand, if it is attached. b. Locate the two release buttons shown in the illustration, and then press the two release buttons as you lift the

cover.

c. Raise the back of the cover, and pivot it toward the front of the computer.

3. To open the cover on the small mini-tower computer:

a. Lay the computer on its side as shown in the illustration. b. Facing the back of the computer, press the release button on the right side of the computer with one hand while

pulling up on the top of the cover with the other hand.

c. Press the release button on the left side of the computer with one hand while pulling up on the top of the cover

with the other hand.

d. Hold the bottom of the computer with one hand, and then pull open the cover with the other hand.

Closing the Computer Cover

1. Check all cable connections, especially those that might have come loose during your work. Fold cables out of the way so that they do not catch on the computer cover.

Gently pull the power cables toward you so that they do not get caught underneath the drives.

2. Check to see that no tools or extra parts (including screws) are left inside the computer.

3. Close the cover:

a. Pivot the cover down. b. Press down on the right side of the cover until it closes.

c. Press down on the left side of the cover until it closes.

d. Make sure both sides of the cover are locked. If not, repeat this step.

4. Replace the padlock, if required.

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Inside Your Computer

Dell™ OptiPlex™ GX260 Service Manual

Key Components Computer Cables

Key Components

NOTE: User service access points are color-coded green.

Small Form-Factor Computer

1 hard drive 6 system board 2 floppy drive 7 power supply 3 CD/DVD drive 8 padlock ring 4 internal speaker 9 heat sink and blower assembly 5 chassis intrusion switch

Small Desktop Computer

1 hard drive 6 padlock ring 2 internal speaker 7 heat sink and blower assembly 3 chassis intrusion switch 8 system board 4 card cage 9 floppy drive 5 power supply 10 CD/DVD drive

Small Mini-Tower Computer

1 hard drive 6 heat sink and blower assembly 2 internal speaker 7 power supply 3 chassis intrusion switch 8 floppy drive 4 system board 9 CD/DVD drive 5 padlock ring

Computer Cables

Small Form-Factor Computer

1 CD/DVD drive data cable 6 IDE data cable (hard drive) 2 floppy-drive data cable 7 input/output cable 3 control-panel cable 8 input/output audio cable 4 CD/DVD drive power cable 9 microprocessor power cable 5 IDE drive power cable (hard drive) 10 CD/DVD audio cable

Small Desktop Computer

1 CD/DVD drive audio cable 5 input/output cable 2 CD/DVD drive data cable 6 input/output audio cable 3 floppy-drive data cable 7 IDE data cable (hard drive) 4 control-panel cable

Small Mini-Tower Computer

1 CD/DVD drive power cable 6 IDE drive power cable (hard drive) 2 CD/DVD drive data cable 7 IDE drive data cable (hard drive) 3 CD/DVD drive audio cable 8 input/output cable 4 floppy-drive power cable 9 input/output audio cable 5 floppy-drive data cable

Cable Colors

Device Color

Hard drive Blue pull tab Floppy drive Black pull tab CD/DVD drive Orange pull tab

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Badge

Dell™ OptiPlex™ GX260 Service Manual

Removing the Badge Replacing the Badge Small Desktop and Small Mini-Tower Computers

Removing the Badge

Small Form-Factor Computer

1. Open the computer cover.

2. Using a flat-blade screwdriver, release the tabs from the inside of the computer, and remove the plastic computer cover from the metal component.

Computer Cover Removal

1 tabs (two on each side)

3. Remove the accent door by pressing the middle of the door while lifting away the sides of the door.

4. From inside the front bezel, push in on the two tabs on either side of the badge to release the badge.

5. Press the badge until it is freed.

Small Desktop and Small Mini-Tower Computers

1. Open the front USB door.

2. From inside the door, push in the two tabs on either side of the badge to release the badge.

3. Press the badge until it is freed.

Replacing the Badge

Small Form-Factor Computer

1. Replace the plastic computer cover. Make sure that the two metal hooks and tabs are securely in place.

Computer Cover Replacement

1 metal hooks (2)

To help replace the plastic computer cover, remove the accent door and front mask from the plastic computer cover:

a. Remove the front mask by releasing the tabs on the inside of the plastic computer cover. b. Remove the accent door by pressing the middle of the door while lifting away the sides of the door.

c. After replacing the plastic computer cover, snap the front mask and accent door into place.

Front Mask and Accent Door Removal

1 accent door 2 front mask

2. Replace the badge by pressing it into place, ensuring that the two tabs click, securing it into position.

Small Desktop and Small Mini-Tower Computers

Replace the badge by pressing it into place, ensuring that the two tabs click, securing it into position.

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Battery

Dell™ OptiPlex™ GX260 Service Manual

Replacing the Battery

CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same

or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.

1. If you have not already done so, make a copy of your configuration information, found in system setup.

2. Open the computer cover.

3. Locate the battery socket labeled BATTERY (see "System Board

NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the

object. Ensure that the object is inserted between the battery and the socket before you attempt to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board.

4. Remove the battery by carefully prying it out of its socket with your fingers or with a blunt, nonconducting object such as a plastic screwdriver.

5. Insert the new battery into the socket with the side labeled "+" facing up, and snap the battery into place.

").

NOTICE: To connect a network cable, first plug the cable into the network wall jack, and then plug it into the

computer.

6. Close the computer cover, and plug your computer and devices into electrical outlets.

7. Replace the padlock, if required.

8. Properly dispose of the old battery.

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Chassis Intrusion Switch

Dell™ OptiPlex™ GX260 Service Manual

Removing the Chassis Intrusion Switch Replacing the Chassis Intrusion Switch Resetting the Chassis Intrusion Detector

Removing the Chassis Intrusion Switch

Small Form-Factor Computer

Small Desktop Computer

Small Mini-Tower Computer

1. Disconnect the chassis intrusion switch cable connector from the control panel on the front of the chassis.

Note the routing of the chassis intrusion cable as you remove it from the chassis. Chassis hooks may hold the cable in place inside the chassis.

2. Slide the chassis intrusion switch out of its slot and remove the switch and its attached cable from the chassis.

Replacing the Chassis Intrusion Switch

To replace the chassis intrusion switch, follow the "Removing the Chassis Intrusion Switch" procedures in reverse order.

Resetting the Chassis Intrusion Detector

1. Enter system setup by pressing <F2> during the computer's POST.

NOTE: For instructions on using system setup, see the User's Guide.

2. Under the System Security tab, reset the Chassis Intrusion option by pressing the left- or right-arrow key to select Reset. Change the setting to Enabled, Enabled-Silent, or Disabled.

NOTE: The default is Enabled-Silent.

NOTE: If a setup password has been assigned by someone else, contact the network administrator for information on

resetting the chassis intrusion detector.

3. Press <Alt><B> to restart the computer and implement your changes.

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Control Panel

Dell™ OptiPlex™ GX260 Service Manual

Removing the Control Panel Replacing the Control Panel

CAUTION: Before you perform this procedure, see "Precautionary Measures." NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching

an unpainted metal surface (such as the back panel) on the computer.

NOTICE: Before you disconnect a device from the computer or remove a component from the system board, verify

that the standby power light on the system board has turned off. To locate the light, see "System Board Components."

1. Shut down the computer through the Start menu.

2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.

NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the

network wall jack.

3. Disconnect any telephone or telecommunication lines from the computer.

4. Disconnect your computer and all attached devices from their electrical outlets, and press the power button to ground the system board.

5. Remove the computer stand, if it is attached.

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before

opening the cover.

6. Open the computer cover.

NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface,

such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.

Removing the Control Panel

Small Form-Factor Computer

1. Using a flat-blade screwdriver, release the four tabs from the inside of the computer, and remove the computer cover from the computer.

1 tabs (2 on each side) 2 computer 3 computer cover

1 metal control-panel shield 2 screw

2. Remove the metal control-panel shield.

3. Remove the screw that holds the control panel to the computer, and remove the control panel.

Small Desktop Computer

1. Remove the front I/O panel.

2. Using an 8-inch #2 Phillips screwdriver, remove the screw that secures the control panel to the computer, and lift the panel away from the computer.

Small Mini-Tower Computer

1. To remove the top and bottom panels of the computer, remove any installed CD drives and release all the tabs on each panel.

1 computer cover tab (remove the CD drive to access this tab) 2 top-panel tabs 3 top panel 4 bottom panel 5 computer cover screw 6 computer cover tabs (2)

2. To prepare the computer cover for removal, release the three computer cover tabs (one tab is located by the CD drive and two tabs are located by the I/O panel).

NOTE: To release the tab located by the CD drive, you can pry the computer cover away from the computer and pull

out the tab.

3. If necessary, remove the computer cover screw.

4. Close the computer and remove the computer cover.

5. Remove the screw that secures the control panel to the computer, and pull the control panel away from the computer.

Replacing the Control Panel

Small Form-Factor Computer

1. Replace the control panel and the control-panel shield.

2. Replace the computer cover. Ensure that the two metal hooks and tabs are securely in place.

To help replace the computer cover, remove the accent door and front mask from the computer cover:

a. Remove the front mask by releasing the tabs on the inside of the computer cover. b. Remove the accent door by pressing the middle of the door while you lift away the sides of the door.

1 accent door 2 front mask

3. Replace the computer cover and ensure that the two metal hooks and tabs are securely in position.

1 metal hooks (2)

4. To replace the front mask and accent door, press them into position.

Small Desktop Computer

Follow the steps in the "Removing the Control Panel" procedure in the reverse order, ensuring that all tabs are secure.

Small Mini-Tower Computer

Follow the steps in the "Removing the Control Panel" procedure in the reverse order, ensuring that all tabs are secure.

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Cards and Adapters

Dell™ OptiPlex™ GX260 Service Manual

Small Form-Factor Computer Small Desktop Computer Small Mini-Tower Computer

Your computer provides slots for the following cards:

In the small form-factor computer, one low-profile, 32-bit, 33-MHz PCI card or serial port adapter; one DVI adapter card or one 32-bit, low-profile AGP 4x card operating at 1.5 V.

In the small desktop computer, two 32-bit, 33-MHz PCI cards or one PCI card and one serial port adapter; one DVI adapter card or one 32-bit, low-profile AGP 4x card operating at 1.5 V.

In the small mini-tower computer, four 32-bit, 33-MHz PCI cards or three PCI cards and one serial port adapter; one DVI adapter card or one 32-bit, AGP 4x card operating at 1.5 V.

NOTE: Before disconnecting a device from the computer or removing a component from the system board, verify that

the auxiliary power light on the system board is off. For the location of this light, see "System Board

Small Form-Factor Computer

PCI Cards Serial Port Adapters AGP and DVI Adapter Cards

PCI Cards

Installing a PCI Card

CAUTION: Before you perform this procedure, see "Precautionary Measures."

1. If you are replacing a card, remove the current driver for the card from the operating system.

2. Raise the retention arm.

Raising the Retention Arm

1 edge connector 2 card 3 retention arm 4 card connector 5 filler bracket

3. If you are installing a new card, remove the filler bracket to create an empty card-slot opening, then continue with

step 5

4. If you are replacing a card that is already installed in the computer, remove the card (see "Removing a PCI Card

If necessary, disconnect any cables connected to the card. Grasp the card by its top corners, and ease it out of its connector.

5. Prepare the card for installation.

See the documentation that came with the card for information on configuring the card, making internal connections, or otherwise customizing it for your computer.

CAUTION: Some network adapters automatically start the computer when they are connected to a

network. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any cards. Verify that the standby power light on the system board is off. To locate this light, see "System Board

6. Place the card on the connector and press down firmly. Ensure that the card is fully seated in the slot.

If the card is full-length, insert the end of the card into the card guide bracket as you lower the card toward its connector on the system board. Insert the card firmly into the card connector on the system board.

Card Connection

").

1 bracket caught outside of slot 2 bracket within slot 3 fully seated card 4 not fully seated card

7. Before you lower the retention arm, ensure that:

The tops of all cards and filler brackets are flush with the alignment bar. The notch in the top of the card or filler bracket fits around the alignment guide.

Press the arm into place, securing the card(s) in the computer.

Closing the Retention Arm

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