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Small Form-Factor Desktop, Small Desktop, and Small Mini-Tower Chassis — Removing and Replacing Parts: Dell™ OptiPlex™ GX150 Service Manual

Overview Hard Drives
Recommended Tools System Power Supply
Precautionary Measures Expansion-Card Cage (Small Desktop Chassis)
Computer Cover Riser Board (Small Desktop and Small Mini-Tower Chassis)
Key Components Expansion Cards
System Cables System Board Components
Control Panel, Badge, and Power Button Memory
Front-Panel Inserts (Small Desktop and Small Mini-Tower Chassis) AGP Graphics Card/GPA (AIMM) Card
Front I/O Panel Microprocessor and Cooling Package
Chassis Intrusion Switch Voltage Regulator Module
3.5-Inch Floppy Drives System Battery
Optical Drives System Board

Overview

This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell OptiPlex small form-factor desktop, small desktop, and small mini-tower chassis GX150 systems. Unless otherwise noted, each procedure assumes that the following conditions exist:


Recommended Tools

The GX150 chassis 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:

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 system from electrostatic discharge (ESD).

caution.gif (1120 bytes) 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 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.

  3. 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.

  4. Verify that the auxiliary power indicator 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" for the location of this indicator).

  5. Wear a wrist grounding strap, and clip it to an unpainted metal surface, such as the padlock ring on the back of the chassis. If a wrist grounding strap is not available, touch an unpainted metal surface on the back of the computer or on the computer chassis, 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 chassis to dissipate static electricity that might harm internal components.

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.


Computer Cover

note.gif (1042 bytes) NOTE: If your computer is on a stand, remove the stand before you open the computer cover. 

Opening the Small Form-Factor Desktop Computer Cover

bb_open.gif (11940 bytes)
1 Securing buttons (one on each side)
2 Padlock ring

Opening the Small Desktop Computer Cover

intern01.gif (12220 bytes)
1 Securing buttons (one on each side)
2 Padlock ring

Opening the Small Mini-Tower Computer Cover

sk_open.gif (16748 bytes)
1 Securing buttons (one on each side)
2 Padlock ring
  1. Remove the padlock from the padlock ring, if present.

NOTICE: To prevent damage to the optical drive data cable, open the cover until it catches at a 45-degree angle. Then remove the optical drive data cable from the system board and open the cover to a 90-degree angle.

Opening the Small Mini-Tower Chassis to a 45-Degree Angle

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.

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

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's chassis.

  3. In the small mini-tower chassis, close the cover to a 45-degree angle and connect the optical drive data cable. 

  4. Close the computer cover by pivoting the cover down toward the back of the chassis and into position. Make sure that the securing buttons click into place.

  5. Replace the padlock, if required.
note.gif (1135 bytes) NOTE: After you open and close the cover, the chassis intrusion detector causes the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.

See "Resetting the Chassis Intrusion Detector" for instructions.

Key Components

Inside the Small Form-Factor Desktop Chassis

bb_insid.gif (23248 bytes)
1 Hard drive
2 3.5-inch floppy drive (supports slimline devices)
3 Optical drive (supports slimline devices)
4 Internal speaker
5 Chassis intrusion switch
6 Power supply release button
7 Power supply
8 AC power connector
9 I/O ports and connectors
10 Padlock ring
11 Microprocessor and heat sink
12 System board

Inside the Small Desktop Chassis

 inside.gif (24690 bytes)
1 3.5-inch floppy drive
2 Hard drive
3 Internal speaker
4 Chassis intrusion switch
5 Expansion-card cage
6 Power supply
7 Expansion-card slots
8 AC power connector
9 Padlock ring
10 I/O ports and connectors
11 Microprocessor and heat sink
12 System board
13 Optical drive

Inside the Small Mini-Tower Chassis

NOTICE: This view shows the optical drive data cable removed.

 sk_insid.gif (28875 bytes)
1 Optical drive
2 3.5-inch floppy drive
3 Hard drive
4 Internal speaker
5 Chassis intrusion switch
6 System board
7 Expansion-card slots
8 I/O ports and connectors
9 AC power connector
10 Power supply
11 Padlock ring
12 Microprocessor and heat sink shroud

System Cables

Cabling—Small Form-Factor Desktop Chassis

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

 CablingSmall Desktop Chassis

note.gif (1135 bytes) NOTE: The following figure depicts the cabling in a system that does not have a sound card installed.

cables01.gif (35548 bytes)
1 Optical drive audio cable
2 Optical drive data cable
3 3.5-inch floppy drive data cable
4 Control panel cable
5 Front I/O cable
6 Front I/O audio cable
7 EIDE interface cable (hard drive)     

note.gif (1135 bytes) NOTE: The following figure depicts the cabling in a system that has a sound card installed.

cables02.gif (34360 bytes)
1 Optical drive audio cable
2 Optical drive data cable
3 3.5-inch floppy drive data cable
4 Control panel cable
5 Front I/O cable
6 Front I/O audio cable
7 EIDE interface cable (hard drive)     

 CablingSmall Mini-Tower Chassis

1 Optical drive power cable
2 Optical drive audio cable
3 Optical drive data cable
4 3.5-inch floppy drive data cable
5 3/5-inch floppy drive power cable
6 Hard-drive power cable 
7 Hard-drive data cable 
8 Front I/O cable
9 Front I/O audio cable

The following table provides a color code key for the cables inside the system.

Hard drive Blue
Floppy drive Black
Optical  drive Orange
USB Gray
ATA, IDE, or EIDE drive Green
Control panel Yellow
CD audio Blue
System audio Black

Control Panel, Badge, and Power Button

Removing the Control Panel—Small Form-Factor Desktop Chassis

 bbpwrpnl.gif (26245 bytes)
1 Control panel
  1. Face the front of the computer and grasp the right and left sides of the plastic computer cover. Dislodge the plastic cover from the metal chassis and pull the plastic out and away.

  2. Remove the piece covering the control panel.

  3. Remove the screw that holds the control panel to the chassis.

Rotating the Badge—Small Form-Factor Desktop Chassis

butn_rem.gif (21014 bytes)
  1. Remove the plastic part of the computer cover (see step 1 in the previous procedure).

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

  3. Press on the badge until it is freed.

Replacing the Control Panel and Badge—Small Form-Factor Desktop Chassis

Replace the control panel and badge by following, in reverse order, the procedures in "Removing the Control Panel and Badge—Small Form-Factor Desktop Chassis."

Removing the Control Panel—Small Desktop Chassis

  1. Remove the front I/O panel.
ejpwrpnl.gif (12990 bytes)
  1. Using an 8-inch, #2 Phillips-head screwdriver, remove the screw holding the control panel to the chassis and pull the panel up and away from the chassis.

Rotating the BadgeSmall Desktop Chassis

  1. Open the front USB door.

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

  3. Press on the badge until it is freed

Replacing the Control Panel—Small Desktop Chassis

  1. Replace the control panel and secure it to the chassis by replacing the screw you removed in step 2.

  2. Replace the front I/O panel.

Replacing the Badge—Small Desktop Chassis

Slightly tilt the replacement button so that the lever fits through the slot on the bezel. Straighten the button and press it into place.

Removing the Control Panel and Badge—Small Mini-Tower Chassis

  1. Lay the computer on its right side and open the cover.

  2. Remove the top and bottom panels of the computer by releasing the eight tabs on each panel. 

  3. Remove the front bezel:
  1. Release 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.

  2. Close the cover and remove the front bezel.

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

 
1 Top panel
2 Bottom panel
3 Front panel tabs (3)
4 Top panel tabs (8)
  1. Remove the screw holding the control panel to the chassis, and pull the panel up and away from the chassis.
  1. Rotate the badge by pressing in on the small lever that holds the badge to the bezel.

Replacing the Control Panel and Badge—Small Mini-Tower Chassis

To replace the control panel and badge, follow the "Removing the Control Panel and Badge" procedures in reverse, ensuring that the tabs on the top panel, bottom panel, and front panel are secure. 


Front-Panel Inserts (Small Desktop and Small Mini-Tower Chassis)

Removing Front-Panel Inserts—Small Desktop Chassis

  1. Facing the front of the computer, use your fingers  to remove the front-panel cover.
inserts.gif (18769 bytes)
1 Optical drive front-panel cover
2 3.5-inch drive front-panel cover
  1. Press on the insert until it pops free of the front-panel cover.

 

sk_insrt.gif (19988 bytes)

Removing Front-Panel Inserts—Small Mini-Tower Chassis

  1. Open the computer cover to a 45-degree angle and disconnect the optical drive data cable.

  2. Open the cover to a 90-degree angle and release the insert tabs from inside the chassis.
  1. Press on the insert until it pops free of the front-panel cover.

Replacing Front-Panel Inserts

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


Front I/O Panel

Removing the Front I/O Panel—Small Form-Factor Desktop Chassis

bbctrlpl.gif (28905 bytes)
  1. To access the screw that holds the front I/O panel to the chassis, remove the hard drive.

  2. Disconnect the control panel cable from the control panel connector on the I/O panel. Disconnect the front I/O cable from the connector on the system board (see "System Board Components" for the location of the front-panel connector and front I/O cable).

  3. Remove all cables that are connected to the front I/O panel.

  4. From inside the chassis cover, remove the mounting screw that secures the front I/O panel to the chassis.

  5. Remove the front I/O panel from the chassis.

Removing the Front I/O Panel—Small Desktop Chassis

ctrlp_rm.gif (19711 bytes)
  1. Remove the hard-drive shroud. 

  2. Disconnect the hard-drive data cable.

  3. Disconnect the control panel cable from the control panel connector. Disconnect the I/O cable from the connector on the system board (see "System Board Components" for the location of the front-panel connector and I/O cable).

    Note the routing of the control panel cable as you remove it from the chassis so that you can replace it correctly.

  4. Remove all cables that are connected to the front I/O panel.

  5. From inside the chassis cover, remove the mounting screw that secures the front I/O panel to the chassis.

  6. Remove the front I/O panel from the chassis.

Removing the Front I/O Panel—Small Mini-Tower Chassis

  1. Disconnect the control panel cable from the control panel connector. Disconnect the I/O cable from the connector on the system board (see "System Board Components" for the location of the front-panel connector and I/O panel).

    Note the routing of the control panel cable as you remove it from the chassis so that you can replace it correctly.

  2. Remove all cables that are connected to the front I/O panel.

  3. From inside the chassis cover, remove the mounting screw that secures the front I/O panel to the chassis.

  4. Remove the front I/O panel from the chassis.

Replacing the Front I/O Panel—Small Form-Factor Desktop, Small Desktop, and Small Mini-Tower Chassis

To replace the front I/O panel, follow the "Removing the Front I/O Panel" procedures in reverse, ensuring that the upright, notched tab on the chassis fits through the hole at the end of the control panel.


Chassis Intrusion Switch

Removing the Chassis Intrusion Switch—Small Form-Factor Desktop Chassis

remintsw.gif (23024 bytes)

Removing the Chassis Intrusion Switch—Small Desktop Chassis

iswch_rm.gif (17868 bytes)

Removing the Chassis Intrusion Switch—Small Mini-Tower Chassis

  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 system's POST.
note.gif (1135 bytes) NOTE: For instructions on using system setup, see the online System User's Guide.
  1. 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.gif (1135 bytes) NOTES: The default is Enabled-Silent.

If a setup password has been assigned by someone else, contact the network administrator for information on resetting the chassis intrusion detector.
  1. Press <Alt><B> to restart the system and implement your changes.

3.5-Inch Floppy Drives

Small Form-Factor Desktop Chassis

Small Desktop Chassis

Small Mini-Tower Chassis

Removing the 3.5-Inch Floppy Drive—Small Form-Factor Desktop Chassis

  1. Open the computer cover.

  2. Disconnect the combination data cable from the interface (IDE2) and floppy drive data connectors on the system board.

Removing the Cables on the Floppy DriveSmall-Form Factor Chassis

1 Power cable
2 Audio cable
3 Optical interposer board
4 LIF lever
5 Combination data cable
6 System board floppy drive connector
7 System board interface connector (IDE2)

 

 

  1. Disconnect the power cable and audio cable from the interposer board and then remove the interposer board from the optical drive. 

  2. Press inward on the two tabs on the sides of the floppy drive to disengage the drive from the chassis; slide the drive upward and remove it from the chassis.

  3. Disconnect the floppy drive data cable from the back of the drive by first releasing the LIF lever.

    Once this lever is released, the cable is easily removed from the connector.

Removing the Floppy Drive Data Cable

1 Floppy drive data cable
2 LIF lever
3 System board floppy drive connector
  1. Remove the floppy drive from the sled by pulling the sled tab out while pushing the drive up, and then sliding the drive out of the sled.

Removing and Replacing the Sled

1 Sled tab
2 Sled

Replacing the 3.5-Inch Floppy DriveSmall Form-Factor Desktop Chassis

  1. Snap the replacement drive into the sled and ensure that it is secure in the sled.

  2. Attach the floppy drive data cable to the back of the floppy drive by inserting the cable into the connector and then sliding the LIF lever to lock the cable into place.

Attaching the Floppy Drive Data CableSmall Form-Factor Chassis

1 Floppy drive data cable
2 LIF lever
  1. Gently slide the drive into the chassis until the tabs securely click into position.

Replacing the Floppy DriveSmall Form-Factor Chassis

1 Floppy drive data cable
  1. Connect the interposer board to the optical drive and connect the power cable and audio cable.

Attaching CablesSmall Form-Factor Chassis

1 Power cable
2 Audio cable
3 Interposer board
4 LIF lever
5 Combination data cable
6 System board floppy drive connector
7 System board interface connector (IDE2)
  1. Connect the combination data cable to the floppy and interface (IDE2) connectors on the system board.

  2. Close the computer cover.

Removing the 3.5-Inch Floppy Drive—Small Desktop and Small Mini-Tower Chassis

  1. Open the computer cover.

  2. Disconnect the power cable and the floppy drive data cable from the drive.

  3. Press inward on the two tabs on the sides of the drive bay to disengage the bracket from the chassis.

  4. Slide the bracket upward, and remove it from the chassis.

Removing the 3.5-Inch Floppy DriveSmall Desktop Chassis

disket01.gif (7861 bytes)

Removing the 3.5-Inch Floppy DriveSmall Mini-Tower Chassis

sk_3rmv.gif (6526 bytes)
  1. If the replacement drive does not have the bracket rails attached, remove the old drive from the bracket by removing the four screws that secure the drive to the bracket rails.
  1. Attach the bracket to the new drive by aligning the screw holes on the drive with the screw holes on the bracket rails and tightening all four screws.

Removing and Replacing the Drive Bracket Rails

disket10.gif (9797 bytes)
1 Drive
2 Bracket rails (2)
3 Screws (4)

Replacing the 3.5-Inch Floppy DriveSmall Desktop and Small Mini-Tower Chassis

  1. Ensure that bracket rails are attached to the new drive.

  2. Gently slide the bracket into place until the tabs securely click into position.

  3. Attach the floppy drive data cable to the back of the floppy drive.

  4. Connect the power cable to the power input connector on the drive.

Attaching Cables to a 3.5-Inch DriveSmall Desktop Chassis

dskdrcab.gif (13672 bytes)
1 Power cable
2 Floppy drive data cable
3 Floppy drive system board connector

Attaching Cables to a 3.5-Inch DriveSmall Mini-Tower Chassis

sk_3cabl.gif (12789 bytes)
1 Power cable
2 Floppy drive data cable
3 Floppy drive system board connector
  1. Close the computer cover.

Optical Drives

Small Form-Factor Desktop Chassis

Small Desktop Chassis

Small Mini-Tower Chassis

Removing  the Optical DriveSmall Form-Factor Desktop Chassis

cd_rem.gif (8467 bytes)
  1. Open the computer cover.

  2. Remove the interposer board from the optical drive.

Removing CablesSmall Form-Factor Desktop Chassis

1 Interposer board
2 Optical drive interface connector
3 Combination data cable
4 System board floppy drive connector
5 System board interface (IDE2) connector

 

  1. Press inward on the two tabs on the sides of the drive bay to disengage the drive from the chassis.

Replacing the Optical DriveSmall Form-Factor Desktop Chassis

  1. Gently slide the drive into place until the tabs securely click into position.

  2. Connect the interposer board to the optical drive.

  3. Close the computer cover.

Attaching Cables to an Optical DriveSmall Form-Factor Desktop Chassis

1 Interposer board
2 Optical drive interface connector
3 Combination data cable
4 System board floppy drive connector
5 System board interface (IDE2) connector

Removing the Optical DriveSmall Desktop Chassis

disket02.gif (8126 bytes)

Removing the Optical DriveSmall Mini-Tower Chassis

sk_cdrmv.gif (7908 bytes)

Removing and Replacing the Drive Bracket Rails—Small Desktop and Small Mini-Tower Chassis

disket10.gif (9797 bytes)
1 Drive
2 Bracket rails (2)
3 Screws (4)

If you are replacing an optical drive and bracket assembly, follow these instructions. If you are installing a new drive that does not have bracket rails attached, connect it to the set of rails that are attached to the inside of the cover.

note.gif (1135 bytes) NOTE: If there are no screws with the bracket in the small mini-tower chassis, contact Dell. See the User's Guide for information on contacting Dell.
  1. Open the computer cover.

  2. Remove the optical drive data cable from the optical drive.

  3. Remove the optical drive power cable and audio cable from the optical drive.

  4. Press inward on the two tabs on the sides of the drive bay to disengage the bracket from the chassis.

  5. Slide the bracket upward and remove it from the chassis.

  6. If the replacement drive does not have the bracket rails attached, remove the brackets from the old drive by removing the four screws that secure the drive to the bracket rails.

  7. Attach the bracket to the new drive by aligning the screw holes on the drive with the screw holes on the bracket rails and tightening all four screws.

Replacing the Optical Drive—Small Desktop and Small Mini-Tower Chassis

  1. Reinstall the optical drive and bracket assembly in the chassis by gently sliding the bracket into place until the tabs securely click into position.

  2. If you are installing a drive that has its own controller card, install the controller card in an expansion slot.

  3. Connect the optical drive power cable and audio cable to the optical drive.

  4. Connect the optical drive data cable to the optical drive.

If your system came with an EIDE CD drive, use the spare connector on the existing interface cable. Otherwise, use the EIDE interface cable provided in the drive kit.

Attaching Cables to an Optical DriveSmall Desktop Chassis

1 Optical drive data cable
2 Optical drive interface connector
3 Power cable
4 Power connector
5 Audio connector
6 Audio cable

Attaching Cables to an Optical DriveSmall Mini-Tower Chassis

sk_cdcab.gif (15065 bytes)
1 Power connector
2 Optical  drive data cable
3 Audio connector
4 System board interface connector (IDE2)

note.gif (515 bytes) NOTE: If you install a second optical device, do not route the cable through the plastic clips on the side of the 3.5-inch bay.
  1. Close the computer cover.

Hard Drives

Small Form-Factor Desktop Chassis

Small Desktop Chassis

Small Mini-Tower Chassis

Removing the Hard-Drive Shroud—Small Desktop Chassis

shroud.gif (10506 bytes)
  1. Open the computer cover.

  2. Remove the plastic shroud covering the hard drive by pressing in on the indented tab at the top of the shroud and lifting the shroud away.

Removing the Hard Drive—Small Form-Factor Desktop Chassis

hd_rem.gif (11055 bytes)

Removing the Hard Drive—Small Desktop Chassis

hrdsk01.gif (12222 bytes)

Removing the Hard Drive—Small Mini-Tower Chassis

sk_hdrmv.gif (7033 bytes)
  1. Disconnect the power and interface cables from the drive.

  2. For the small form-factor chassis, press in on the tabs on each side of the bracket and slide it toward the I/O panel and remove the drive from the chassis. 

For the small desktop and small mini-tower  chassis, press in on the tabs on each side of the bracket, and slide it up and out.

  1. If your replacement hard drive does not have the bracket rails attached, remove the four screws holding the bracket rails to the hard drive.

Replacing the Hard Drive—Small Form-Factor Desktop, Small Desktop, and Small Mini-Tower Chassis

NOTICE: To avoid possibly damaging the drive by 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. If necessary, attach the bracket rails to the new hard drive by aligning the four screw holes of the drive and bracket and then inserting and tightening the screws that came with your upgrade kit.

  2. Reinstall the hard-drive bracket in the chassis by gently sliding the bracket into place until you hear it securely click.

  3. Connect a power cable to the power input connector on the back of the drive, and connect one of the device connectors on the EIDE cable to the 40-pin interface connector on the back of the hard drive.

  4. Check all connectors to be certain that they are properly cabled and firmly seated.

NOTICE: To avoid possible damage to the system, you must match the colored stripe on the EIDE interface cable with pin 1 on the drive's interface connector and with the EIDE interface connector (labeled IDE1) on the system board.

To locate EIDE connector 1 (IDE1) on the system board, see "System Board Components."

Attaching Hard-Drive Cables—Small Form-Factor Desktop Chassis

hd_cble.gif (18168 bytes)
1 Drive power connector
2 Hard-drive power cable
3 Drive IDE1 connector
4 Hard-drive data cable
5 System board IDE1 connector

Attaching Hard-Drive Cables—Small Desktop Chassis

1 Hard-drive power cable
2 Hard-drive data cable
3 IDE1 connector

Attaching Hard-Drive Cables—Small Mini-Tower Chassis

sk_hdcab.gif (13631 bytes)
1 Hard-drive data cable
2 Hard-drive power cable
3 IDE1 connector
  1. Close the computer cover.

  2. If the drive you just installed is the primary drive, insert a bootable system floppy disk into the floppy drive.

  3. Turn on the computer.
  1. Enter system setup and update the appropriate Primary Drive option, 0 or 1.

    See the User's Guide for complete information on system setup.

  2. Reset the chassis intrusion detector.

  3. Restart the computer.

  4. Partition and logically format the computer's hard drive before proceeding to the next step.

For partition and format instructions, refer to the documentation that came with the operating system.

note.gif (1135 bytes) NOTE: On systems with hard 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 drive would have a primary partition of 2 GB (drive C) and a second partition of 500 MB (drive D). Hard 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.
  1. Test the hard drive by running the Dell Diagnostics.

    See "Solving Problems" in the User's Guide for complete information.

  2. If the drive you just installed is the primary drive, install the operating system on the hard drive.

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

System Power Supply

Removing the Power Supply—Small Form-Factor Desktop Chassis

pwr_rmv.gif (21623 bytes)
1 DC power cables
2 Push button
3 AC power connector

Removing the Power Supply—Small Desktop Chassis

jzpwrrem.gif (31324 bytes)
1 DC power cables
2 AC power connector
3 Push button

Removing the Power Supply—Small Mini-Tower Chassis

1 DC power cables
2 Push button
3 Screws (2)
4 AC power connector
  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. On the small desktop system, remove the expansion-card cage, and remove the power cables from the side of the hard-drive cage. To remove the power cables, use the cables as leverage and pull away from the clips while simultaneously pulling on the metal clips with your finger.

On the small mini-tower chassis, remove the two screws that secure the power supply to the back of the chassis.

  1. Press the "PUSH" button located on the floor of the chassis.

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

  3. Lift the power supply up and out of the computer chassis.

Replacing the Power Supply

  1. Slide the power supply into place.

  2. On the small mini-tower chassis, replace the two screws that secure the power supply to the back of the chassis.

  3. Reconnect the DC power cables.

  4. Connect the AC power cable to the connector.

  5. On the small desktop system, reattach the power cables to the side of the hard-drive cage.

    1. Run the cables underneath the metal clips.

    2. Press the clips to close them over the cables.

Expansion-Card Cage (Small Desktop Chassis)

Removing the Expansion-Card Cage—Small Desktop Chassis


caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."
  1. Examine any cables connected to expansion cards through the back-panel openings, and disconnect any cables that will not extend to where the cage must be placed when it is removed from the chassis.

  2. Remove any cables connected to the expansion card.

  3. Gently pull on the handle and lift the expansion-card cage up and away from the chassis.

Replacing the Expansion-Card Cage

  1. Align the expansion-card cage slots with the tabs in the chassis opening for the expansion-card cage. Slide the expansion-card cage into place.

  2. 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 and 2 of the previous procedure.

Riser Board (Small Desktop and Small Mini-Tower Chassis)

expcrd03.gif (8772 bytes)
1 PCI expansion-card connector 1 (PCI1)
2 PCI expansion-card connector 2 (PCI2)

Removing the PCI Riser Board on the Small Desktop Chassis

NOTICE: To avoid damage to the expansion cards or the system board by ESD, ground yourself by touching an unpainted metal surface on the back of the computer.

caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."
  1. Remove the expansion-card cage.

  2. Remove the expansion cards installed in the slots.

  3. Remove the two screws that attach the riser board to the expansion-card cage.

Replacing the PCI Riser Board on the Small Desktop Chassis

Follow the "Removing the PCI Riser Board" procedures in reverse order.

Removing the PCI Riser Board on the Small Mini-Tower Chassis

NOTICE: To avoid damage to the expansion cards or the system board by ESD, ground yourself by touching an unpainted metal surface on the back of the computer.

caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."
  1. Remove all cables from the system board.

  2. Remove the system board metal tray assembly.

  3. Detach the riser board from the system board metal tray assembly.
NOTE: The metal tab on the PCI riser board may be engaged, release the tab before you remove the riser board. You do not need to engage this tab when you replace the riser board.

1 PCI riser board
2 System board
3 System board tab
4 Riser board tab

Replacing the PCI Riser Board on the Small Mini-Tower Chassis

Follow the "Removing the PCI Riser Board" procedures in reverse order.

Expansion Cards

The small form-factor desktop chassis supports one expansion slot for a low-profile, 32-bit, 33-MHz PCI card. The small desktop chassis accommodates up to two 32-bit PCI expansion cards. The small mini-tower chassis supports up to four 32-bit PCI expansion cards.

note.gif (1135 bytes) NOTE: Before disconnecting a device from the system or removing a component from the system board, verify that the auxiliary power indicator LED on the system board is off. For the location of this LED, see "System Board Components."

32-Bit Low Profile Expansion Card

32-Bit  Expansion Card

expcrd01.gif (3670 bytes)

 

Removing an Expansion Card

caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."
  1. If necessary, disconnect any cables connected to the card.

  2. In the small desktop system, remove the expansion-card cage.

  3. Raise the plastic lever that covers the card-slot opening for the expansion-card you want to remove and remove the filler bracket.

  4. Grasp the card by its outside corners, and ease it out of its connector on the riser board.

  5. If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening.

Replacing an Expansion Card—Small Form-Factor Chassis

Replacing an Expansion Card—Small Desktop Chassis

expcrd10.gif (23263 bytes)
1 Card-edge connector
2 Expansion card
3 Riser board
4 PCI expansion-card connector
5 Expansion-card cage

Replacing an Expansion Card—Small Mini-Tower Chassis


caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."

caution.gif (1120 bytes) CAUTION: Some network cards automatically start the system when they are connected. To guard against electrical shock, be sure to unplug the computer from its electrical outlet before installing any expansion cards.
  1. Prepare the expansion card for installation.

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

  2. Raise the lever that covers the card-slot opening on the back of the chassis.

  3. If there is a filler bracket, remove the filler bracket by raising the hinged lever and sliding the bracket up.

  4. Insert the expansion card into the expansion-card connector.

  5. When the card is firmly seated in the connector, secure the card's mounting bracket to the chassis by lowering the plastic lever.

  6. Connect any cables that should be attached to the card.

  7. In the small desktop system, replace the expansion-card cage.

  8. Close the computer cover, and reconnect the computer and devices to their electrical outlets and turn them on.
note.gif (1135 bytes) NOTE: After you open and close the cover, the chassis intrusion detector causes the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.

See "Resetting the Chassis Intrusion Detector" for instructions.

System Board Components

The subsections that follow contain procedures for removing system board components.

System Board Components

Front of Computer

sysboard.gif (28412 bytes)

Back of Computer

1 PC speaker
2 DC power connector
3 Floppy drive connector
4 Battery
5 EIDE2 connector
6 Auxiliary power indicator
7 Memory module (DIMM) connectors (2)
8 Front-panel cable connector
9 EIDE1 connector
10 PCI 2 riser connector (not populated on the small form-factor chassis, used as the riser in the small desktop chassis, and can be populated with PCI expansion card in the small mini-tower chassis)
11 PCI 1 connector (not able to be populated on the small desktop chassis)
12 AGP/GPA connector
13 Video connector (upper) and audio connectors (lower)
14 CD audio and telephony connectors
15 NIC connector (upper) and USB connectors (2) (lower)
16 Keyboard (lower) and mouse (upper) connectors
17 Diagnostic LEDs
18 Voltage regulator module
19 Parallel port (upper) and serial port (2) (lower) connectors
20 Microprocessor fan connector
21 Microprocessor and heat sink assembly

System Board Jumper

The following figure shows the location of the PSWD jumper on the system board.

System Board Jumper

inside08.gif (8422 bytes)  

System Board Labels

The following table lists the labels for connectors and sockets on the system board and gives a brief description of their functions.

System Board Connectors and Sockets

Connector or Socket Description
AGP AGP Pro connector
AUDIO Line-in, line-out, and microphone jacks
AUX_PWR Auxiliary power indicator
BATTERY Battery socket
CD-IN CD-ROM drive audio cable connector
DIAG_LED Diagnostic LEDs
DIMM_x DIMM socket
DSKT Floppy drive interface connector
FAN Microprocessor fan connector
FRONTAUDIO Front-panel audio connector for onboard audio
FRONTPANEL Front-panel cable connector
IDEn EIDE interface connector
KYBD_MOUSE Keyboard and mouse connectors
MICROPROCESSOR Microprocessor connector
MODEM Telephony connector
MONITOR Video connector
NIC_USB Integrated NIC connector and USB connectors
PAR_SER1_SER2 Parallel and serial port connectors
PCI1 and 2 PCI expansion card connectors
POWER Main power input connector
PSWD Password jumper
VRISER Riser board connector
SPEAKER Internal speaker
VRM Voltage regulator module connector

Memory

Removing a Memory Module

memory02.gif (7925 bytes)
1 Securing clips (2)

caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."
  1. Press the securing clips outward simultaneously until the memory module disengages and pops out slightly from the socket.

  2. Lift the module away from the socket.

Replacing a Memory Module

Press the module fully into the socket while closing the securing clips to lock the module into place.

memory01.gif (19296 bytes)
1 Securing clips (2)
2 Slot

AGP Graphics Card/GPA (AIMM) Card

Installing an AGP Card

NOTE: The small form-factor and small desktop systems support low-profile AGP cards.
  1. Remove the filler bracket by raising the hinged lever and sliding the bracket up.


Removing the AGP Slot Filler Bracket in  the Small-Form Factor Chassis

Removing the AGP Slot Filler Bracket—Small Desktop Chassis

agplever.gif (10217 bytes)

Removing the AGP Slot Filler Bracket—Small Mini-Tower Chassis

 

  1. Insert the AGP card into the connector on the system board. Make sure that the card is securely fastened by the AGP card clip.

Installing an AGP Card

agp_ins.gif (22848 bytes)
1 Front end notch of AGP card
2 I/O panel AGP video connector
3 AGP card clip lever
  1. Press the AGP card clip lever toward PCI slot 1.

  2. Slide the AGP card into place.

  3. Release the AGP card clip lever, ensuring that the tab on the AGP card clip lever fits into the notch on the front end of the AGP card.
  1. Secure the AGP card bracket by lowering the securing lever on the back panel.

Removing an AGP Card

  1. Raise the hinged lever on the back on the system.

  2. On the AGP card clip, press the lever toward  PCI slot 1.

  3. Pull the AGP card up out of the AGP card clip.

Installing a GPA (also called AIMM) Card

aimm_ins.gif (22201 bytes)
1 Front end of GPA (AIMM) card
2 Back end of GPA (AIMM) card
3 GPA (AIMM) connector
4 AGP card clip tab
5 AGP card clip
6 AGP card clip lever tab
7 AGP card clip lever
  1. Insert the card into the connector.

  2. Hook the back end of the card under the AGP card clip tab.

  3. Lower the front end of the card, and push the AGP card clip lever away so that the AGP card clip lever tab is out of the way.

  4. Insert the card firmly into the connector, and release the lever so that the tab is over the front end card bottom.

Removing a GPA (AIMM) Card

  1. Press on the AGP card clip lever so that the tab is not covering the card edge bottom.

  2. Lift the card's front end up, and slightly tilt it upward until the other card end is free from the AGP card clip tab.

Microprocessor and Cooling Package

Removing the Cooling Fan/Heat Sink Assembly and Microprocessor

caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."

caution.gif (1120 bytes) CAUTION: The microprocessor package and heat sink assembly can get extremely hot. To avoid burns, be sure the package and assembly have had sufficient time to cool before you touch them.
  1. Disconnect the cooling fan power cable from the FAN1 connector on the system board.

  2. On the small form-factor and small desktop chassis:
  1. Remove the cooling fan/heat sink assembly from the microprocessor by inserting a flat-blade screwdriver into the slot on the securing slip's green tab. Press down on the tab until the securing clip releases.

    The securing clip hooks over the tab on the side of the socket opposite the hinged end.

  2. Lift the heat sink away from the microprocessor.

On the small mini-tower chassis:

  1. Remove the fan shroud assembly.

  2. Remove the heat sink clip.

  3. Lift the heat sink away from the microprocessor.

 

Removing the Securing Clip

proces01.gif (43397 bytes)
1 Securing clip
2 Securing clip tab
  1. Remove the microprocessor chip from the socket.

NOTICE: Be careful not to bend any of the pins when you remove the microprocessor package from the ZIF socket. Bending the package pins can permanently damage the microprocessor.

The ZIF socket has a lever-type handle that secures and releases the microprocessor package from the ZIF socket.

  1. Pull the socket release lever straight up until the microprocessor package releases.

  2. Remove the microprocessor package from the socket.

Leave the release lever extended so that the socket is ready for the new microprocessor package.

Removing the Microprocessor

proces02.gif (10324 bytes)
1 Microprocessor chip
2 Socket release lever
3 ZIF socket

Replacing the Microprocessor Package and Cooling Fan/Heat Sink Assembly

caution.gif (1120 bytes) CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures."

NOTICE: If you are replacing the microprocessor, do not reuse the old heat sink. Doing so can cause the microprocessor to overheat because of an inadequate amount of thermal compound between the heat sink assembly and the microprocessor package.

NOTICE: You must position the microprocessor package correctly in the ZIF socket to avoid permanent damage to the microprocessor and the computer when you turn on the system.

  1. Install the microprocessor package in the ZIF socket.

    1. If the release lever on the ZIF socket is not all the way out, move it to that position now.

    2. Align pin-1 (the beveled corner) of the microprocessor package and pin-1 of the ZIF socket.

Installing the Microprocessor Chip

proces03.gif (10059 bytes)
1 Pin-1 corners of chip and socket aligned
  1. Set the microprocessor package lightly in the socket, making sure that all the pins are headed into the correct holes.

    Because the system uses a ZIF socket, there is no need to use force (which could bend the pins if the microprocessor package is misaligned).

  2. When the microprocessor package is positioned correctly, press it with minimal pressure to fully seat it in the ZIF socket.

  3. When the microprocessor package is fully seated, pivot the release lever back toward the system board until it snaps into place, securing the microprocessor package.
  1. Replace the fan/heat sink assembly.
  1. If you are installing a new heat sink assembly, remove the plastic cover that is attached to the bottom of the new heat sink assembly.

  2. Place the heat sink assembly on top of the microprocessor package.

  3. Orient the metal retaining clip as shown in "Removing the Securing Clip," and hook the unhinged end of the clip over the tab on the top edge of the ZIF socket.

    NOTICE: Be sure to orient the clip so that the green tab is opposite the memory modules, or the modules may be damaged.

  4. Insert a flat-blade screwdriver in the slot on the green tab, and press down to snap the clip over the tab on the bottom edge of the ZIF socket.
NOTE: If you are installing a microprocessor replacement kit from Dell, return the original heat sink assembly and microprocessor package to Dell in the same package in which your replacement kit was sent. Your microprocessor replacement kit should include a replacement microprocessor heat sink and one replacement securing clips.
  1. Reconnect the cooling fan power cable to the FAN1 connector on the system board.

Checking System Functions

As the system boots, it detects the presence of the new microprocessor and automatically changes the system configuration information in system setup.

note.gif (1135 bytes) NOTE: After you open and close the cover, the chassis intrusion detector causes the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.
  1. Enter system setup and confirm that the system data area correctly identifies the type of installed microprocessor.
note.gif (1135 bytes) NOTE: For instructions on using system setup, see the online System User's Guide.
  1. While in system setup, reset the Chassis Intrusion option by pressing the left- or right-arrow key to select Reset and then choosing Enabled, Enabled-Silent, or Disabled.

    See the online System User's Guide for information on the chassis intrusion detector.
note.gif (1135 bytes) NOTE: If a setup password has been assigned by someone else, contact the network administrator for information on resetting the chassis intrusion detector.
  1. Run the Dell Diagnostics to verify that the new processor is operating correctly.

Voltage Regulator Module

Removing the VRM

Remove the voltage regulator module (VRM) by pressing on the levers of the VRM connector until the module is released and pops up. Since there is not much room between the microprocessor heat sink and the VRM, you may need to use a flat-head screwdriver to gently press on the levers.

NOTICE: Be careful when using a screwdriver to press on the VRM connector levers. If the screwdriver slips, the system board could be damaged.

proces06.gif (9471 bytes)
1 VRM
2 VRM connector
3 Levers (2)

Replacing the VRM

Install the VRM by inserting into the connector until you hear the module snap into place.


System Battery

Removing the System Battery

batt_rmv.gif (7679 bytes)
1 Battery
2 Socket

caution.gif (1120 bytes) CAUTION: There is a danger of the new battery exploding 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 possible, enter system setup and print the system setup screens.

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

Replacing the System Battery

  1. Orient the new battery with the "+" facing up.

  2. Insert the battery into its socket and snap it into place.

System Board

Removing the System Board—Small Form-Factor Desktop, Small Desktop, and Small Mini-Tower Chassis

remsysbd.gif (12921 bytes)
1 System board and metal tray assembly
2 Tab

caution.gif (1120 bytes) CAUTION: Before you remove any component from the system board, read the steps in "Precautionary Measures."

note.gif (1135 bytes) NOTE: The system board and the metal tray are attached and are removed as one piece.
  1. Remove or move any components that restrict access to the system board.
     
  2. Disconnect all cables from the system board.

    Before you remove the existing system board, visually compare the replacement system board to the existing system board to make sure that you have the correct part.
note.gif (1135 bytes) NOTE: The small mini-tower chassis has a tab on the riser board. Release the tab before you remove the system board.
  1. Pull up on the tab and slide the system board toward the front of the chassis; lift it up and away.

  2. Place the system board that you just removed next to the replacement system board.

Replacing the System Board

  1. Transfer components from the existing system board to the replacement system board.

    1. Remove the memory modules and install them on the replacement board.

    caution.gif (1120 bytes) CAUTION: The microprocessor package and heat sink assembly can get hot. To avoid burns, be sure that the package and assembly have had sufficient time to cool before you touch them.

    1. Remove the fan/heat sink assembly and microprocessor package from the existing system board and transfer it to the replacement system board.

    2. For the small mini-tower replace the riser board

  1. Configure the settings of the replacement system board.

    Set the jumper on the replacement system board so it is identical to the one on the existing board.
note.gif (1135 bytes) NOTE: Some components and connectors on the replacement system board may be in different locations than the corresponding connectors on the existing system board.
  1. Orient the replacement board by aligning the notches on the bottom to the tabs on the chassis floor.

  2. Slide the board toward the back of the chassis until it clicks into place.

  3. Replace any components and cables that you removed from the system board.

  4. Reconnect all cables to their connectors at the back of the computer, close the computer cover, and reconnect the computer and devices to their power sources and turn them on.
note.gif (1135 bytes) NOTE: After you close the cover, the chassis intrusion detector causes the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.
  1. Reset the chassis intrusion detector.

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