Dell OptiPlex GX50 User Manual

Dell™ OptiPlex™ GX50 Systems

Before You Begin Computer Cover Inside the Computer Chassis Intrusion Switch Front-Panel Inserts Control Panel and Badge I/O Panel Drives Expansion-Card Cage (Small Desktop Computer Only) Expansion Card Memory Microprocessor Power Supply System Board

Hints, Notices, and Cautions

HINT: A HINT 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; Microsoft, MS-DOS, and Windows NT

are registered trademarks of Microsoft 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. January 2002 Rev A02

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Before You Begin

Dell™ OptiPlex™ GX50 Systems

Getting Started Precautionary Measures

Getting Started

This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell™ OptiPlex™ GX50 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 GX50 computer is primarily a tool-less one, but certain procedures (such as removing drive bracket rails and removing 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

Before you perform any procedure in this section, read the following caution for your personal safety and to prevent damage to the computer from electrostatic discharge (ESD).

CAUTION: FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT

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

1. Turn off the computer and all attached devices.

2. Disconnect the computer and devices from their AC power sources. Also, disconnect any telephone or telecommunication lines from the computer. Doing so reduces the potential for personal injury or shock.

If you are disconnecting a device from the computer or are removing a component from the system board, wait 15 to 30 seconds after disconnecting the computer from AC power before disconnecting the device or removing the component to avoid possible damage to the system board.

Verify that the auxiliary power light on the system board is not on. If it is on, you may need to wait 15 to 30 seconds for it to go out (see "System Board Components

3. Wear a wrist-grounding strap, and clip it to an unpainted metal surface, such as the padlock ring on the back of the computer. If a wrist-grounding strap is not available, touch an unpainted metal surface on the computer, such as the power supply, to discharge static charge from your body before touching anything inside the computer. While you work, periodically touch an unpainted metal surface on the computer to dissipate static electricity that might harm internal components.

" for the location of this light).

In addition, take note of the following safety guideline when appropriate:

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

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Computer Cover

Dell™ OptiPlex™ GX50 Systems

Opening the Computer Cover Closing the Computer Cover

Opening the Computer Cover

NOTE: If your computer is on a stand, remove the stand before you open 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 (one on each side) 2 Padlock ring 3 Security cable slot

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

NOTICE: Do not open the cover if the computer is on the edge of a desk or table. Doing so may cause the computer to

tip over and fall. Make sure that the computer is situated so that there is at least 12 inches of desk- or table-top for the cover to rest on.

2. Press in on the two securing buttons until the cover is free to swing up.

3. On the small mini-tower 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. Then, 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. 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. Make sure cables are not routed over the drive cage—they will prevent the cover from closing properly.

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

3. Close the computer cover by pivoting the cover down toward the back of the computer and into position. Press on the right side of the cover until it closes securely. Then, press on the left side of the cover until it closes securely.

4. Replace the padlock, if required.

NOTE: After you open and close the cover, the chassis intrusion detector causes the following message to be

displayed at the next computer start-up:

ALERT! Cover was previously removed.

See "Resetting the Chassis Intrusion Detector

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" for instructions.

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Inside the Computer

Dell™ OptiPlex™ GX50 Systems

Key Components Computer Cables

Key Components

Inside the Small Form-Factor Computer

1 Hard drive 7 System board 2 3.5-inch floppy drive 8 Power supply 3 CD drive 9 AC power connector 4 Cover release buttons (2) 10 I/O ports and connectors 5 Internal speaker 11 Padlock ring 6 Chassis intrusion switch 12 Heat sink assembly

Inside the Small Desktop Computer

1 Cover release buttons (2) 8 AC power connector 2 Hard drive 9 Padlock ring 3 Internal speaker 10 I/O ports and connectors 4 Chassis intrusion switch 11 Heat sink assembly 5 Expansion-card cage 12 System board 6 Power supply 13 3.5-inch floppy drive 7 Expansion-card slots 14 CD drive

Inside the Small Mini-Tower Computer

1 Cover release buttons (2) 8 AC power connector 2 Hard drive 9 Padlock ring 3 Internal speaker 10 Microprocessor and airflow shroud 4 Chassis intrusion switch 11 Power supply 5 System board 12 3.5-inch floppy drive 6 Expansion-card slots 13 CD drive 7 I/O ports and connectors

Computer Cables

Small Form-Factor Computer

1 CD 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 drive power cable 9 CD audio cable 5 IDE drive power cable (hard drive)

Small Desktop Computer

1 CD drive audio cable 5 Front I/O cable 2 CD drive data cable 6 Front I/O audio cable 3 3.5-inch floppy drive data cable 7 EIDE interface cable (hard drive) 4 Control panel cable

Small Mini-Tower Computer

1 CD drive audio cable 6 Hard drive power cable 2 CD drive power cable 7 Hard drive data cable 3 CD drive data cable 8 Front I/O cable 4 Floppy drive data cable 9 Front I/O audio cable 5 Floppy drive power cable

Cable Colors

Hard drive Blue pull tab Floppy drive Black pull tab CD drive Orange pull tab ATA or IDE Gray Control panel Gray CD audio Blue Computer audio Black

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Chassis Intrusion Switch

Dell™ OptiPlex™ GX50 Systems

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 front I/O panel.

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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Front-Panel Inserts

Dell™ OptiPlex™ GX50 Systems

Removing Front-Panel Inserts Replacing Front-Panel Inserts

Removing Front-Panel Inserts

1. On the small form-factor and small desktop computers, perform the following steps:

a. Face the front of the computer and use your fingers to remove the front-panel cover. b. Press on the insert until it pops free of the front-panel cover.

2. On the small mini-tower computer, perform the following steps:

a. Open the computer cover and release the insert tabs from inside the chassis. b. Press on the insert until it pops free of the front-panel cover.

Small Form-Factor Computer

Small Desktop Computer

Small Mini-Tower Computer

Replacing Front-Panel Inserts

To replace a front-panel insert, follow the appropriate procedure, in reverse, in "Removing Front-Panel Inserts."

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Control Panel and Badge

Dell™ OptiPlex™ GX50 Systems

Removing the Control Panel and Badge Replacing the Control Panel and Badge

Removing the Control Panel and Badge

Small Form-Factor Desktop 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.

Releasing the Tabs—Small Form-Factor Computer

1 Tabs (2 on each side)

3. To remove the badge, remove the accent door by pressing the middle of the door while lifting away the sides of the door.

a. From inside the front bezel, push in on the two tabs on either side of the badge to release the badge. b. Press on the badge until it is freed.

4. To remove the control panel, perform the following steps:

Removing the Control Panel—Small Form-Factor Computer

a. Remove the metal control-panel shield. b. Remove the screw that holds the control panel to the computer.

Small Desktop Computer

1. To remove the badge, open the front USB door.

a. From inside the door, push in the two tabs on either side of the badge to release the badge. b. Press on the badge until it is freed.

2. To remove the control panel, perform the following steps:

a. Remove the front I/O panel

Removing the Control Panel—Small Desktop Computer

b. Using an 8-inch #2 Phillips screwdriver, remove the screw holding the control panel to the computer, and pull

the panel up and away from the computer.

Small Mini-Tower Computer

1. To remove the badge, open the front USB door.

a. From inside the door, push in the two tabs on either side of the badge to release the badge. b. Press on the badge until it is freed.

2. To remove the control panel, perform the following steps:

a. Lay the computer on its right side and open the cover. b. Remove the top and bottom panels of the computer by releasing the eight tabs on each panel.

c. Remove the front bezel by releasing the three tabs located on the front bezel: one tab is located by the CD drive,

and two tabs are located by the I/O panel.

NOTE: This view of the small mini-tower chassis shows the CD drive data cable removed.

Front Bezel Tabs—Small Mini-Tower Computer

1 Top panel 2 Bottom panel 3 Front-panel tabs (3) 4 Top-panel tabs (8)

d. Close the cover and remove the front bezel.

Control-Panel Removal

e. Remove the screw holding the control panel to the chassis, and pull the panel up and away from the chassis.

Replacing the Control Panel and Badge

Small Form-Factor Desktop Computer

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

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

Replacing the Plastic Computer Cover—Small Form-Factor Computer

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.

Removing the Front Mask and Accent Door—Small Form-Factor Computer

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