Dell OptiPlex GX100 Bedienungsanleitung

Dell™OptiPlex™GX100SystemsServiceManual

Small-Form-Factor Chassis —Removing and Replacing Parts

Low-Profile Chassis —Removing and Replacing Parts

Mini Tower Chassis —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.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell 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.

Initial release: May 1999

Last revised: 24 Aug 2000

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Low-Profile Chassis —RemovingandReplacingParts:Dell™OptiPlex™GX100

Systems Service Manual

Overview

This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell OptiPlex low-profile

chassis GX100 system.

Unless otherwise noted, each procedure assumes that the following conditions exist:

lYou have performed the steps in "Precautionary Measures."

lYou have removed the computer cover.

lYou 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 file require the use of one or more of the following tools:

lSmall flat-blade screwdriver

lWide flat-blade screwdriver

l#1 and #2 Phillips-head screwdrivers

l1/4-inch nut driver

Also, use a wrist grounding strap as explained in "Precautionary Measures."

Precautionary Measures

Before you perform any procedure in this section, take a few moments to read the following caution for your personal safety and to prevent

damage to the system from ESD.

Overview

Recommended Tools

Precautionary Measures

Internal Views

Computer Cover

Eject, Power, and Reset Buttons

Front-Panel Inserts

Control Panel

Chassis Intrusion Switch

Drives

System Power Supply

Riser Boards

System Board Components

Expansion-Card Cage

Expansion Cards

DIMMs

Microprocessor/Heat Sink Assembly

System Battery

System Board

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.

Internal Views

Figure 1 shows a top view of the low-profile chassis to help you orient yourself when you work inside the computer.

Figure 1. Low-Profile Chassis Orientation View

Figure 2 shows the low-profile chassis with the cover removed.

Figure 2. Inside the Low-Profile Chassis

Computer Cover

Figure 3. Computer Cover Removal

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 system board is not on. If it is on, you may need to wait 10 to 30 seconds for it to go out

(see Item 13 on Figure 17).

System board

Hard-disk drive

Power supply

Externally accessible drive bays

Diskette drive in upper bay

Diskette drive interface cable

Hard-disk drive interface cable

Hard-disk drive

Chassis intrusion switch

Expansion-card cage

Expansion-card slots

Security cable slot

I/O ports and connectors

AC power receptacle

Padlock ring

Power supply

To remove the low-profile chassis computer cover, perform the following steps:

1. Press in on the two securing buttons until the cover is free to swing up (see Figure 3).

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

3. Lift the cover off the hooks at the front of the chassis.

4. Disengage the tabs that secure the cover to the top of the chassis, and lift the cover away.

Figure 4. Computer Cover Replacement

To replace the low-profile chassis 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, Power, and Reset Buttons

Figure 5. Eject, Power, and Reset Button Removal

To remove the eject, power, and reset buttons, perform the following steps:

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 or the reset button, use a small screwdriver and push in the two or three plastic clips that hold the button to the

bezel.Whentheseclipsarereleased,thebuttonscomefreefromthebezel.

Front-Panel Inserts

Figure6.5.25-Inch Front-Panel Insert Removal

To remove a 5.25-inch front-panel insert, perform the following steps:

1. Hold the bezel with the front facing you.

2. From the front of the top cover, use your thumbs to press inward on the insert until it snaps free of the cover.

To replace a 5.25-inch front-panel insert, position the two ring-tabs over the posts on the inside of the bay opening, and then press the ring tabs

over the posts.

Control Panel

Figure 7. Control Panel Removal

To remove the control panel in the low-profile chassis, perform the following steps:

Disk eject button

Reset button

Power button

Posts (2)

Front of top cover

Ring tabs (2)

Control panel

Chassis intrusion switch

1. Disconnect the control panel cable from the PANEL connector on the system board (see "System Board Labels" for the location of the

PANEL connector).

2. From inside the chassis, remove the mounting screw that secures the control panel to the chassis.

3. Disconnect the chassis intrusion switch cable connector from the control panel.

4. Remove the control panel from the chassis.

When you reinstall the control panel, be sure to put the right side of the control panel behind the mounting tab.

Chassis Intrusion Switch

Figure 8. Chassis Intrusion Switch Removal

To remove the chassis intrusion switch in the low-profile chassis, perform the following steps:

1. Disconnect the chassis intrusion switch cable connector from the control panel on the front of the chassis and shown in Figure 8.

Note the routing of the chassis intrusion cable as you remove it from the chassis. Hooks on the chassis keep the cable in place.

2. Slide the chassis intrusion switch out of its slot to remove it from the chassis (see Figure 8).

3. Install the replacement chassis intrusion switch and cable.

4. To reset the chassis intrusion detector, enter System Setup and reset Chassis Intrusion to Enabled or Enabled-Silent (see your User's

Guide for instructions).

Drives

Figure 9. Drive Locations



Control panel

Chassis intrusion switch

NOTE: In all of the following procedures, left and right refer to your left and right as you face the front of the computer.

3.5-Inch Diskette Drive

To remove the 3.5-inch diskette drive assembly from the drive shelf, perform the following steps:

1. Disconnect the DC power cable and the interface cable from the back of the drive.

2. Press both release latches on the left side of the 3.5-inch diskette drive.

3. Pivot the 3.5-inch diskette drive upward 1 inch (2.5 cm), and then pull the drive away from the notched tabs on the right chassis wall.

4. Remove the bracket from the diskette drive you just removed.

5.25-inch Drive

To remove the 5.25-inch drive/bracket assembly, perform the following steps:

1. Remove the diskette drive and bracket.

2. Disconnect the DC power cable and EIDE cable from the drive.

3. Lift the 5.25-inch drive/bracket straight up and out of the chassis.

Hard-Disk Drive Removal

Figure 10. Hard-Disk Drive/Bracket Assembly Removal

To remove the hard-disk drive/bracket assembly, perform the following steps:

1. Disconnect the DC power cable and EIDE cable from the drive.

2. Loosen the captive screw securing the hard-disk drive/bracket to the bottom of the chassis.

3. Grasp the drive/bracket, and pivot it upward from the chassis until the two hinge tabs (located on the side opposite the screw) clear the floor

divider (see Figure 10). Then lift the bracket upward and out of the chassis.

4. To remove the hard-disk drive from the bracket, place the drive/bracket on a flat surface with the bracket facing up.

5. Remove the four screws that secure the bracket to the drive.

Figure 11. Hard-Disk Drive to Bracket Installation

5.25-inchdrive

3.5-inch diskette drive

Hard-disk drive

Chassis intrusion switch

NOTE: Computer configurations differ. Your computer may have an Iomega Zip drive installed instead of a 3.5-inch diskette drive, or

your computer may have no externally accessible drives installed.

Captive screw

Hinge tabs on back of drive bracket (2)

Slots in floor divider (3)

To install a replacement hard-diskdrive,performthefollowingsteps.

NOTICE: To avoid damaging the drive by electrostatic discharge (ESD), ground yourself by touching an unpainted metal surface on

the back of the computer.

NOTICE: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a

surface, such as a foam pad, that will sufficiently cushion it.

1. Prepare the drive for installation.

Check the documentation for the drive to verify that it is configured for your computer system.

2. If not already done, remove the computer cover.

3. To install the hard-disk drive to the bracket, place the drive top-down on a flat surface with the bracket mounting holes facing up.

4. Position the bracket over the holes and install four screws to secure the bracket to the drive.

5. Insert the bracket's hinge tabs into the chassis slots so that the tabs hook over the slots.

6. Rotate the bracket toward the chassis floor and secure the bracket with a screw.

7. Connect a power cable to the power input connector on the back of the drive (see Figure 12).

8. Check all connectors to ensure that they are properly cabled and firmly seated.

9. Connect one of the device connectors on the EIDE cable to the 40-pin interface connector on the back of the hard-disk drive.

NOTICE: You must match the red colored stripe on the EIDE cable with pin 1 on the drive's interface connector to avoid possible

damage to your system.

Figure 12. Hard-Disk Drive Cable Attachment

NOTICE: You must attach the blue connector on the EIDE interface cable to the IDE1 connector on the system board to avoid

possible damage to your system.

NOTICE: You must match the red colored stripe on the EIDE interface cable with pin 1 on the IDE1 connector to avoid possible

damage to your system.

Hard-disk drive

Bracket

Screws (4)

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 install a drive, see

the other precautions in "Precautionary Measures."

Power cable

EIDE interface cable

IDE1 connector on system board

10. If it is not already connected, connect the blue connector on the EIDE interface cable to the IDE1 connector on the system board.

To locate the IDE1 connector on the system board, see "System Board Components."

11. Replace the computer cover. Then reconnect your computer and peripherals to their electrical outlets, and turn them on.

12. If the drive you just installed is the primary drive, insert a bootable diskette into drive A.

13. Turn on the computer system.

14. Enter System Setup and update the appropriate Primary Drive option, 0 or 1 (see the online System User's Guide for complete information).

15. After you update the System Setup settings, reboot the system.

16. Partition and logically format your drive before you proceed to the next step.

See the documentation for your operating system for instructions.

17. Test the hard-disk drive by running the Dell Diagnostics (see the online System User's Guide for complete information.

18. If the drive you just installed is the primary drive, install your operating system on the hard-disk drive.

For instructions, refer to the documentation that came with your operating system.

System Power Supply

Figure 13. Power Supply Removal

To remove the system power supply, perform the following steps:

1. Disconnect the AC power cable from the back of the power supply.

2. DisconnecttheDCpowercablesfromthesystemboardandthedrives.

Note the routing of the DC power cables underneath the tabs in the chassis as you remove them from the system board and drives. It is

important to route these cables properly when you replace them to prevent them from being pinched or crimped.

3. Removethescrewbelowthefanguardonthebackofthechassis.

4. Slide the power supply toward the front of the computer approximately 1 inch.

NOTE: On systems with hard-disk drives larger than 2 GB, create a primary partition of 2 GB and divide the remaining capacity

into partitions of 2 GB or less. For example, a system with a 2.5-GB hard-disk drive would have a primary partition of 2 GB (drive

C) and a second partition of 500 MB (drive D). Hard-disk drives must be partitioned this way because MS-DOS®–based operating

systems (including Microsoft®Windows NT®, when using a FAT16 file system) do not support drive partitions larger than 2 GB.

AC power cord

AC power receptacle

Power supply

DC power cables

Securing screw

5. Liftthepowersupplyupandoutofthechassis.

Expansion-Card Cage

Figure 14. Expansion-Card Cage Removal

To remove the expansion-card cage, perform the following steps:

1. Examine any cables connected to expansion cards through the back-panel openings and disconnect any cables that will not reach to where

the cage must be placed upon removal from the chassis.

2. Locatethesecuringlever(seeFigure14).Rotatetheleverupwarduntilitstopsinanupright position.

3. Slide the expansion-card cage out of the chassis.

4. Lift the expansion-card cage up and away from the chassis.

To replace the expansion-card cage into the low-profile chassis, perform the following steps:

1. With the securing lever in the upright position, align the expansion-card cage slots with the tabs in the chassis opening for the expansion-

card cage (see Figure 14). Slide the expansion-card cage into place.

2. Rotate the securing lever downward until it is flush with the top of the chassis. Make sure that the riser board is fully seated in the RISER

connector on the system board.

3. Reconnect any cables you removed in step 1 of the previous procedure.

Riser Boards

The low-profile chassis is available with either a PCI riser board (see Figure 15) or a PCI/ISA riser board (see Figure 16). The PCI riser board

provides three PCI expansion card slots. The PCI/ISA riser board provides one PCI expansion slot, one ISA expansion slot, and one shared

PCI/ISA expansion slot.

Figure 15. PCI Riser Board

Figure 16. Low-Profile Chassis PCI/ISA Riser Board

Securing lever

Expansion-card cage

Slots (2)

Tabs (2)

NOTICE: Use a wrist grounding strap as explained in "Precautionary Measures."

Auxiliary power indicator

LED (AUX_LED)

Wakeup On LAN (WOL)

connector

PCI expansion slot 1 (PCI1)

PCI expansion slot 2 (PCI2)

PCI expansion slot 3 (PCI3)

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