Dell OptiPlex GX1 Manual de usuario
Contents: Dell OptiPlex GX1 Small-Form-Factor Systems Service Manual
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Dell™ OptiPlex™ GX1 Small-Form-Factor Systems Service Manual
Removing and Replacing Parts
Notes, Notices, and Cautions
Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic
type. These blocks are notes, notices, and cautions, and they are used as follows:
NOTE: A NOTE indicates important information that helps you make better use of your system.
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 potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
Information in this document is subject to change without notice.
© 1999 Dell Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Trademarks used in this text: Dell, OptiPlex, and the DELL logo 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.
Initial release: Jun 1999
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Back to Contents Page
Removing and Replacing Parts: Dell™ OptiPlex™ GX1 Small-
Form-Factor Systems Service Manual
Overview System Power Supply
Recommended Tools Riser Board
Precautionary Measures System Board Components
Internal Views Expansion-Card Cage
Computer Cover Expansion Cards
Eject and Power Buttons DIMMs
Control Panel Microprocessor/Heat Sink Assembly
Chassis Intrusion Switch System Battery
Drives System Board
Overview
This section provides procedures for removing and replacing the components, assemblies, and
subassemblies in the Dell OptiPlex small-form-factor chassis GX1 system.
Unless otherwise noted, each procedure assumes that the following conditions exist:
You have performed the steps in "Precautionary Measures."
You have removed the computer cover.
You can replace or reinstall a part by performing the removal procedure in reverse order unless
additional information is provided.
Recommended Tools
Most of the procedures in this manual require the use of one or more of the following tools:
#1 and #2 Phillips-head screwdrivers
1/4-inch nut driver
Also, use a wrist grounding strap as explained in "Precautionary Measures."
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Precautionary Measures
Before you perform any procedures in this manual, take a few moments to read the following caution for your
personal safety and to prevent damage to the system from ESD.
CAUTION: FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT
Before you start to work on the system, perform the following steps in the sequence listed:
1. Turn off the computer and all peripherals.
2. Disconnect the computer and peripherals 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.
3. If you are disconnecting a peripheral from the computer or are removing a component from the
system board, wait 10 to 20 seconds after disconnecting the computer from AC power before
disconnecting the peripheral or removing the component to avoid possible damage to the
system board.
4. Wear a wrist grounding strap, and clip it to an unpainted metal surface, such as the padlock loop
on the back of the chassis. If a wrist grounding strap is not available, touch any unpainted metal
surface on the back of the computer or on the computer chassis, such as the power supply, to
discharge any static charge from your body before touching anything inside the computer.
While you work, periodically touch an unpainted metal surface on the computer chassis to
dissipate any static electricity that might harm internal components. Also avoid touching
components or contacts on a card and avoid touching pins on a chip.
5. Verify that the auxiliary power indicator on the riser board is not on. If it is on, you may need to
wait 10 to 30 seconds for it to go out (see Figure 20).
Internal Views
Figure 1 shows a top view of the chassis to help you orient yourself when you work inside the computer.
Figure 1. Orientation View
1System board
2Diskette drive
3Hard-disk drive
4CD-ROM drive
5Power supply
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Figure 2 shows the chassis with the cover removed.
Figure 2. Inside the Chassis
1CD-ROM drive interface cable
2Externally accessible upper drive
bay
3Hard-disk drive
4Diskette-drive interface cable
5Hard-disk drive interface cable
6Expansion-card cage
7System board
8Expansion-card slots
9I/O ports and connectors
10 AC power receptacle
11 Security cable slot
12 Power supply
13 Chassis intrusion switch
Computer Cover
Figure 3. Computer Cover Removal
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To remove the computer cover, perform the following steps:
1. Be sure the padlock ring is pushed into the cover.
2. Press in on the two securing buttons until the cover is free to swing up (see Figure 3).
3. Raise the back of the cover, and pivot it toward the front of the computer.
4. Lift the cover off the hooks at the front of the chassis.
5. Disengage the tabs that secure the cover to the top of the chassis, and lift the cover away.
Figure 4. Computer Cover Replacement
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To replace the computer cover, perform the following steps:
1. Face the front of the computer and hold the cover at a slight angle (see Figure 4).
2. Align the bottom of the cover with the bottom of the chassis and insert the hooks on the cover into the
recessed slots on the computer chassis so that the tabs catch the hooks inside the slots.
3. Pivot the cover down toward the back of the chassis and into position.
Make sure that the securing buttons click into place.
Eject and Power Buttons
Figure 5. Eject and Power Button Removal
1Diskette eject button
2Power button
To remove the eject and power buttons, perform the following steps:
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1. Lay the computer cover on a flat work surface, with the inside of the top cover facing up.
2. To remove the 3.5-inch diskette-drive eject button, pull gently on the plastic part of the button until it
comes free.
3. To remove the power button, use a small screwdriver and push in the two plastic clips that hold the
button to the bezel. When these clips are released, the button and the spring come free from the bezel.
Control Panel
Figure 6. Control Panel Removal
1Screw
2Control panel
To remove the control panel, perform the following steps:
1. Remove the drive shelf.
2. Remove the power supply.
3. Disconnect the control panel cable from the control panel connector on the system board (see "System
Board Labels" for the location of the PANEL connector).
Note the routing of the control panel cable as you remove it from the chassis.
4. Remove the mounting screw that secures the control panel to the chassis.
5. Disconnect the chassis intrusion switch cable connector from the control panel.
6. Remove the control panel cable.
7. Remove the control panel from the chassis.
Note the routing of the control panel cable as you remove it from the chassis.
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When you install the replacement control panel, be sure to put the right side of the control panel behind the
mounting tab.
Chassis Intrusion Switch
Figure 7. Chassis Intrusion Switch Removal
1Control panel
2Chassis intrusion
switch
To remove the chassis intrusion switch, perform the following steps:
1. Remove the drive shelf.
2. Remove the power supply.
3. Remove the control panel.
4. Disconnect the chassis intrusion switch cable connector from the control panel.
Note the routing of the chassis intrusion cable as you remove the cable from the chassis. Chassis
hooks may hold the cable in place inside the chassis.
5. Slide the chassis intrusion switch out of its slot and remove the switch and its attached cable from the
chassis.
6. Install the replacement chassis intrusion switch and cable.
7. To reset the chassis intrusion detector, enter the System Setup program and reset Chassis Intrusion
to Not Detected (see your online System User's Guide for instructions).
Drives
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NOTE: In all of the following procedures, left and right refer to your left and right as you face the front
of the computer.
Figure 8. Drive Locations
1Chassis intrusion switch
2CD-ROM drive
33.5-inch diskette drive
4Hard-disk drive
Preliminary Steps
You must remove the drive shelf before removing the 3.5-inch diskette drive, the CD-ROM drive, the hard-
disk drive, the control panel, the chassis intrusion switch, or the power supply.
Figure 9. Drive Shelf Removal
1Drive shelf
2Release tabs (2)
To remove the drive shelf from the chassis, perform the following steps:
1. Disconnect the power and interface cables from the diskette drive and CD-ROM drive.
2. Press inward on the two drive shelf release tabs, and pull the shelf forward and out of the chassis (see
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Figure 9).
Hard-Disk Drive
Figure 10. Hard-Disk Drive/Bracket Removal
1Drive bracket
2Release tabs (2)
CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals,
disconnect them from electrical outlets, and then wait at least 5 seconds before you remove
the computer cover. Also, before you remove a drive, see the other precautions in
"Precautionary Measures."
To remove the hard-disk drive and its bracket from the chassis, perform the following steps:
1. If you are replacing a hard-disk drive that contains data you want to keep, make a backup copy of your
files before you continue this procedure.
2. Remove the computer cover if not already removed.
3. Remove the drive shelf.
4. Squeeze the tabs on each side of the hard-disk drive/bracket, and pull the hard-disk drive/bracket
forward about one inch (see Figure 10).
5. Disconnect the power and interface cables from the back of the drive.
6. Lift the hard-disk drive/bracket away from the chassis.
7. Lay the hard-disk drive/bracket on an antistatic surface with its bracket facing up.
8. Remove the four screws securing the hard-disk drive to the bottom of the bracket (see Figure 11).
Figure 11. Drive Bracket Removal
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