Dell™ OptiPlex™ GX240 SERVICE MANUAL www.dell.com support.dell.
Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. ____________________ Information in this document is subject to change without notice. © 2001— 2002 Dell Computer Corporation. All rights reserved.
Contents 1 Before You Begin Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . 10 Recommended Tools Precautionary Measures . . . . . . . . . . . . . . . . . . . . . . 10 2 Computer Cover Opening the Computer Cover . . . . . . . . . . . . . . . . . . . 14 . . . . . . . . . . . . . . . . . . . . 17 Key Components . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Computer Cables . . . . . . . . . . . . . . . . . . . . .
Replacing the Badge . . . . . . . . . . . . . . . . . . . . . . . . 31 . . . . . . . . . . . . . . . . . 31 . . . . . . . . 33 Removing the Chassis Intrusion Switch . . . . . . . . . . . . . . 36 Replacing the Chassis Intrusion Switch . . . . . . . . . . . . . . 38 Resetting the Chassis Intrusion Detector . . . . . . . . . . . . . 39 . . . . . . . . . . . . . . . . . . .
Small Mini-Tower Computer . Replacing the CD/DVD Drive . . . . . . . . . . . . . . . . . . 64 . . . . . . . . . . . . . . . . . . . . 67 . . . . . . . . . . . . . . . . . . 67 . . . . . . . . . . . . . . . . . . . . 69 Small Form-Factor Computer Small Desktop Computer Small Mini-Tower Computer . Removing the Hard Drive . . . . . . . . . . . . . . . . . . . 71 . . . . . . . . . . . . . . . . . . . . . 72 . . . . . . . . . . . . . . . . . . 72 . . . . . . . . . . . . . . . . . . . .
9 Expansion Card Cage (Small Desktop Computer Only) Removing the Expansion-Card Cage . . . . . . . . . . . . . . . 102 Replacing the Expansion-Card Cage . . . . . . . . . . . . . . . 102 Removing the PCI Riser Board . . . . . . . . . . . . . . . . . . 103 Replacing the PCI Riser Board . . . . . . . . . . . . . . . . . . 103 . . . . . . . . . . . . . . . . . . 106 . . . . . . . . . . . . . . . . . . . 110 . . . . . . . . . . . . . . . . . . . 112 . . . . . . . . . . . . . . . . . 112 . .
14 Power Supply Removing the Power Supply . . . . . . . . . . . . . . . . . . . 132 Replacing the Power Supply . . . . . . . . . . . . . . . . . . . 135 . . . . . . . . . . . . . . . . . . . . 138 15 System Board System Board Components Removing the System Board . . . . . . . . . . . . . . . . . . . 141 Replacing the System Board . . . . . . . . . . . . . . . . . . .
Contents
SECTION 1 B e f o r e Yo u B e g i n Getting Started Precautionary Measures w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Getting Started This section provides procedures for removing and replacing the components, assemblies, and subassemblies in the Dell™ OptiPlex™ GX240 small form-factor, small desktop, and small mini-tower computers. Unless otherwise noted, each procedure assumes that the following conditions exist: • You have performed the steps in "Precautionary Measures." • You have opened the computer cover.
3 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.
B e f o r e You B e g i n w w w. d e l l . c o m | s u p p o r t . d e l l .
SECTION 2 Computer Cover Opening the Computer Cover Closing the Computer Cover w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Opening the Computer Cover NOTE: If your computer is on a stand, remove the stand before you open the computer cover.
Small Desktop Computer 1 2 1 Padlock ring 2 Release buttons (one on each side) Computer Cover 15
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m S m a l l M i n i -To w e r C o m p u t e r 1 2 1 1 Padlock ring 2 Release buttons (one on each side) 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.
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.
Computer Cover w w w. d e l l . c o m | s u p p o r t . d e l l .
SECTION 3 Inside the Computer Key Components Computer Cables w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Key Components NOTE: User service access points are colorcoded green. S m a l l Fo r m - Fa c t o r C o m p u t e r 2 3 1 4 5 6 12 11 7 10 8 9 20 Inside the Computer 1 Hard drive 7 System board 2 3.
Small Desktop Computer 14 1 13 2 12 3 11 4 5 10 6 9 8 7 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 and blower assembly 5 Expansion-card cage 12 System board 6 Power supply 13 3.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m S m a l l M i n i -To w e r C o m p u t e r 1 13 2 12 11 10 3 9 4 8 5 7 6 22 Inside the 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.
Computer Cables S m a l l Fo r m - Fa c t o r C o m p u t e r 1 2 3 4 5 6 7 8 9 10 1 CD/DVD drive data cable 6 IDE data cable (hard drive) 2 Floppy drive data cable 7 Input/output cable 3 Control panel cable 8 Input/output audio cable 4 CD/DVD drive power cable 9 Microprocessor power cable 5 IDE drive power cable (hard drive) 10 CD/DVD audio cable Inside the Computer 23
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S m a l l M i n i -To w e r C o m p u t e r 3 4 5 6 7 8 2 1 9 1 CD/DVD drive power cable 6 IDE drive power cable (hard drive) 2 CD/DVD drive audio cable 7 IDE drive data cable (hard drive) 3 CD/DVD drive data cable 8 Input/output cable 4 Floppy drive power cable 9 Input/output audio cable 5 Floppy drive data cable Inside the Computer 25
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SECTION 4 Battery Removing the Battery Replacing the Battery w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Battery 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.
SECTION 5 Badge Removing the Badge Replacing the Badge w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Badge Small Form-Factor Computer 1 Open the computer cover. 2 Using a flat-blade screwdriver, release the tabs from the inside of the computer and remove the plastic computer cover from the metal component. Computer Cover Removal 1 1 Tabs (2 on each side) 30 Badge 3 Remove the accent door by pressing the middle of the door while lifting away the sides of the door.
Small Desktop and Small Mini-Tower Computers 1 Open the front USB door. 2 From inside the door, push in the two tabs on either side of the badge to release the badge. 3 Press on the badge until it is freed. Replacing the Badge Small Form-Factor Computer 1 Replace the plastic computer cover. Make sure that the two metal hooks and tabs are securely in place.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Computer Cover Replacement 1 1 Metal hooks (2) To help replace the plastic computer cover, remove the accent door and front mask from the plastic computer cover: 32 Badge 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.
Front Mask and Accent Door Removal 1 2 1 Accent door 2 Front mask 2 Replace the badge by pressing it into place, ensuring that the two tabs click, securing it into position. Small Desktop and Small Mini-Tower Computers Replace the badge by pressing it into place, ensuring that the two tabs click, securing it into position.
Badge w w w. d e l l . c o m | s u p p o r t . d e l l .
SECTION 6 Chassis Intrusion Switch Removing the Chassis Intrusion Switch Replacing the Chassis Intrusion Switch Resetting the Chassis Intrusion Detector w w w. d e l l . c o m | s u p p o r t . d e l l .
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Small Desktop Computer Chassis Intr usion Switch 37
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m S m a l l M i n i -To w e r C o m p u t e r 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.
Resetting the Chassis Intrusion Detector 1 Enter system setup by pressing 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. 3 Press to restart the computer and implement your changes.
Chassis Intr usion Switch w w w. d e l l . c o m | s u p p o r t . d e l l .
SECTION 7 Control Pa n e l w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Control Panel Small Form-Factor Computer 1 Open the computer cover. 2 Using a flat-blade screwdriver, release the tabs from the inside of the computer and remove the plastic computer cover from the metal component.
Control Panel Removal 3 Remove the metal control-panel shield. 4 Remove the screw that holds the control panel to the computer. Small Desktop Computer 1 Remove the front I/O panel.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Control Panel Removal 2 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 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.
F r o n t B e z e l Ta b s — S m a l l M i n i -To w e r C o m p u t e r 1 2 4 3 1 Top panel 2 Bottom panel 3 Front-panel tabs (3) 4 Top-panel tabs (8) b Close the cover and remove the front bezel.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Control Panel Removal 4 Remove the screw holding the control panel to the chassis, and pull the panel up and away from the chassis. Replacing the Control Panel Small Form-Factor Computer 46 Co n t rol Pa n e l 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.
Computer Cover Replacement 1 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.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m F r o n t M a s k a n d A c c e n t D o o r R e m o v a l — S m a l l Fo r m - Fa c t o r Computer 1 2 1 Accent door 2 Front mask Small Desktop Computer 1 Replace the control panel and secure it to the computer by replacing the screw you removed in step 2 of the removal procedure. 2 Replace the front I/O panel.
SECTION 7 Drives Removing the Floppy Drive Replacing the Floppy Drive Removing the CD/DVD Drive Replacing the CD/DVD Drive Removing the Hard Drive Replacing the Hard Drive Adding a Second Hard Drive — Small Mini-Tower Computer w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Floppy Drive Small Form-Factor Computer 1 Disconnect the floppy-drive cable from the system board. 2 Remove the power cable from the interposer board. 3 Disconnect the CD/DVD drive cable and the power cable from the CD/DVD drive. 4 Remove or raise the drive by pressing the green tabs on either side of the drive and lifting the drive up. 5 Remove the floppy-drive cable from the floppy drive.
b To release the floppy-drive cable from the connector, slide the lever until it is fully extended, and then lift the cable away.
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1 Floppy-drive cable 2 Lever 6 Remove the floppy drive from its sled by pulling the sled tab out while pushing the drive up, and then sliding the drive out of the sled. Small Desktop Computer 1 Disconnect the power cable and the floppy-drive data cable from the drive. 2 Disconnect the data cable from the floppy-drive connector on the system board.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 3 Press inward on the two tabs on the sides of the drive bay to disengage the drive from the computer. 4 Slide the drive upward and remove it from the computer. Floppy-Drive Removal 5 If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive.
Small Mini-Tower Computer 1 Disconnect the power cable and the floppy-drive data cable from the drive. 2 Disconnect the data cable from the floppy-drive connector on the system board. Cable Removal 1 2 3 1 Power cable 2 Floppy-drive data cable 3 Floppy-drive connector Replacing the Floppy Drive Small Form-Factor Computer 1 Snap the replacement drive into the sled and ensure that it is secure.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 2 3 56 Drives Connect the interposer board to the floppy drive. a Slide the floppy-drive cable into the connector. b Close the lever so that the cable is secure in the connector. c Line up the hole on the bottom of the interposer board with the notch on the connector, and snap the interposer board onto the drive. Gently slide the floppy drive into the computer until the tabs securely click into position.
Attaching the Floppy-Drive Data Cable 1 2 3 4 or 2 1 3 4 Drives 57
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 1 Connector notch 2 Interposer board alignment hole 3 Floppy-drive cable 4 Lever 4 Attach the power cable to the interposer board on the floppy drive. 5 Attach the CD/DVD drive cable and the power cable to the CD/DVD drive. 6 Connect the floppy-drive cable to the DSKT connector on the system board. 7 Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents.
Cable Replacement 1 2 3 1 Power cable 2 Floppy-drive data cable 3 Floppy-drive connector Small Mini-Tower Computer 1 If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive. 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 (two screws on each rail).
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Cable Replacement 1 2 3 1 Power cable 2 Floppy-drive data cable 3 Floppy-drive connector Removing the CD/DVD Drive Small Form-Factor Computer 1 60 Drives Remove the interposer board from the CD/DVD drive.
Interposer Board Removal 1 1 or 1 Interposer board 2 Press inward on the two tabs on the sides of the drive to disengage the drive from the computer. 3 Slide the drive upward and remove it from the computer.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m CD/DVD Drive Removal Small Desktop Computer 1 62 Drives Remove the data, power, and audio cables from the drive.
Cable Removal 1 2 3 4 1 Power cable 2 Audio cable 3 Data cable 4 Drive connector 2 Press inward on the two tabs on the sides of the drive bay to disengage the drive from the computer. 3 Slide the drive upward and remove it from the computer. 4 If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Drive Bracket Rail Removal Small Mini-Tower Computer 1 64 Drives Remove the data, power, and audio cables from the drive.
Cable Removal 1 2 3 4 1 Power cable 2 Audio cable 3 Data cable 4 Drive connector 2 Press inward on the two tabs on the sides of the drive bay to disengage the drive from the computer. 3 Slide the drive upward and remove it from the computer.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m CD/DVD Drive Removal 4 If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive.
Replacing the CD/DVD Drive Small Form-Factor Computer 1 Gently slide the drive into place until the tabs securely click into position. 2 Connect the interposer board to the CD/DVD drive. a Ensure that the interposer board tab fits securely under the notch on the inside of the cover. b Attach the power and audio cables to the interposer board.
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1 Interposer board 2 Notch on inside of cover 3 Interposer board tab If your computer came with a CD drive, use the spare connector on the existing interface cable. Otherwise, use the IDE interface cable provided in the drive kit. 3 Connect the data, power, and audio cables to the drive. 4 Check all cable connections, and fold cables out of the way to provide airflow for the fan and cooling vents. 5 If the drive bay was previously empty, remove the front-panel insert from the front panel.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Cable Replacement 1 2 3 4 1 Power cable 2 Audio cable 3 Data cable 4 Drive connector If your computer came with an IDE CD drive, use the spare connector on the existing interface cable. Otherwise, use the IDE interface cable provided in the drive kit. 70 Drives 3 If you are installing a drive that has its own controller card, install the controller card in an expansion slot.
5 If the drive bay was previously empty, remove the front-panel insert from the front panel. a Release the insert tabs from inside the chassis. b Remove the insert by pressing it until it pops free. c Replace the front-panel piece by snapping it into place. Small Mini-Tower Computer 1 Gently slide the drive into place until the tabs securely click into position. 2 Connect the data, power, and audio cables to the drive.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 1 Power cable 2 Audio cable 3 Data cable 4 Drive connector If your computer came with an IDE CD drive, use the spare connector on the existing interface cable. Otherwise, use the IDE interface cable provided in the drive kit. 3 If you are installing a drive that has its own controller card, install the controller card in an expansion slot.
Cable Removal 1 2 2 1 Power cable 2 Hard-drive cable Press in on the tabs on each side of the drive, and slide the drive toward the I/O panel until the notch in the drive rail allows the drive to be removed from the computer.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Hard Drive Removal 1 2 3 1 Notch in drive rail 2 Tabs (2) If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive. Small Desktop Computer 1 74 Drives The hard drive may or may not have a plastic shroud cover. (Operating the computer without a hard-drive shroud does not affect its performance.
Hard-Drive Shroud Removal 2 NOTE: Your computer’s hard drive may or may not have a plastic shroud cover. Operating the computer without a harddrive shroud does not affect its performance. Disconnect the power and hard-drive data cables from the drive.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Cable Removal 1 2 3 76 Drives 1 Hard-drive cable 2 Power cable Press in on the tabs on each side of the drive and slide it up and out.
Hard Drive Removal 1 1 4 Tabs (2) If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive. Small Mini-Tower Computer 1 Disconnect the power and hard-drive data cables from the drive.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Cable Removal 1 2 2 78 Drives 1 Power cable 2 Hard-drive cable Press in on the tabs on each side of the drive and slide it up and out.
Hard Drive Removal 3 If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail to the drive. Replacing the Hard Drive 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.
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Small Desktop Computer Hard Drive Replacement 1 2 3 1 Power cable 2 IDE data cable 3 IDE1 connector Drives 81
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Small Mini-Tower Computer Hard Drive Replacement 1 2 3 1 Power cable 2 IDE data cable 3 IDE1 connector 3 On the small desktop computer, if your computer has a hard-drive shroud, replace the shroud by inserting the two tabs on the bottom into the holes in the computer and snapping the top into place. (Operating the computer without a hard-drive shroud does not affect its performance.).
To locate the system board interface connector (IDE1), see "System Board Components." 5 If the drive you just installed is the primary drive, insert a bootable floppy disk into the floppy drive. 6 Turn on the computer. 7 Enter system setup and update the appropriate Primary Drive option, 0 or 1. See the User's Guide for complete information on system setup. 8 Reset the chassis intrusion detector. 9 Restart the computer.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 4 Remove the two green plastic drive rails inside the lower hard-drive bay. These rails are not attached with screws to the inside of the hard-drive bay. To remove the rails, gently pull the rails up and out of the bay. 5 Attach the rails to the hard drive using the two screws attached to the rails. Ensure that the rail tabs are positioned at the back of the hard drive.
Second Hard Drive Installed 1 2 3 4 1 Rail tabs (2) 2 Second hard drive in upper bay 3 First hard drive in lower bay 4 Hard drive cage NOTICE: Match the colored strip on the cable with pin 1 on the drive. Locate the extra connector on the drive cable that is attached to the first hard drive and attach the connector to the second hard drive.
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SECTION 8 Expansion Card Expansion Card Types Removing an Expansion Card Replacing an Expansion Card Removing an AGP Graphics Card Replacing an AGP Graphics Card w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Expansion Card Types Your computer provides expansion slots for the following cards: • In the small form-factor computer, one low-profile, 32-bit, 33-MHz PCI card. • In the small desktop computer, up to two 32-bit, 33-MHz PCI cards. • In the small mini-tower computer, up to four 32-bit, 33-MHz PCI cards.
Expansion Cards 1 NOTE: Before disconnecting a device from the computer or removing a component from the system board, verify that the auxiliary power light on the system board is off. For the location of this light, see "System Board Components." 2 3 1 AGP 4x card 2 Low-profile 32-bit PCI card 3 32-bit PCI card Removing an Expansion Card CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 2 Press the hinged lever on the expansion card retention arm and raise the retention arm. 3 Grasp the card by its outside corners and ease it out of its connector on the riser board. 4 If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening.
3 Press the lever on the expansion card retention arm and raise the retention arm. Expansion Card Removal 2 1 3 4 5 6 7 1 Retention arm 5 Expansion-card connector 2 Lever 6 Riser board 3 Expansion card 7 Expansion-card cage 4 Card-edge connector 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.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m S m a l l M i n i -To w e r C o m p u t e r 1 2 3 5 4 1 Expansion card 2 Card-edge connector 3 Expansion-card connector 4 Retention arm 5 Lever 3 Grasp the card by its outside corners and ease it out of its connector on the riser board. 4 If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening.
CAUTION: Some network cards automatically start the computer 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 computer.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Expansion Card Connection 4 3 2 1 1 Bracket within slot 2 Bracket caught outside of slot 3 Fully seated card 4 Not fully seated card 4 Before lowering the retention arm, make sure of the following: • Tops of all expansion cards and filler brackets are flush with the alignment bar. • Notch in the top of the card or filler bracket fits around the alignment guide. Press the arm into place, securing the expansion card(s) in the computer.
Retention Arm Closure 4 3 2 1 1 Filler bracket 2 Alignment guide 3 Alignment bar 4 Retention arm 5 Reconnect the computer and devices to their electrical outlets and turn them on. 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" for instructions.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing an AGP Graphics Card Small Form-Factor Computer 1 Remove the filler bracket by raising the hinged lever and then sliding the bracket up. AGP Slot Filler Bracket Removal 1 1 Hinged lever 2 On the AGP card clip, press the lever toward the PCI slot 1. 3 Pull the AGP card up and out of the AGP card clip.
AGP Slot Filler Bracket Removal 2 1 1 Hinged lever 2 Indented tab 3 On the AGP card clip, press the lever toward the PCI slot 1. 4 Pull the AGP card up and out of the AGP card clip. Small Mini-Tower Computer 1 Remove the filler bracket by raising the hinged lever and then sliding the bracket up.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m AGP Slot Filler Bracket Removal 1 1 98 Expans ion Card Hinged lever 2 On the AGP card clip, press the lever toward PCI slot 1. 3 Pull the AGP card up and out of the AGP card clip.
Replacing an AGP Graphics Card S m a l l Fo r m - Fa c t o r, S m a l l D e s k t o p , a n d S m a l l M i n i -To w e r Computers 1 6 5 4 3 2 1 AGP card 4 AGP card clip tab 2 System board 5 AGP card clip lever 3 AGP card clip 6 AGP card notch 1 Press 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. 2 Secure the AGP card by lowering the hinged lever on the back panel.
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SECTION 9 Expansion-Card Cage (Small Desktop Computer Only) Removing the Expansion-Card Cage Replacing the Expansion-Card Cage Removing the PCI Riser Board Replacing the PCI Riser Board w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Expansion-Card Cage CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures." 1 Examine any cables connected to expansion cards through the backpanel openings, and disconnect any cables that will not reach the expansion-card cage once it is removed from the computer. 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 computer.
Expansion-Card Cage Replacement 3 Replace and reconnect any cables you removed in steps 1 and 2 of the previous procedure. Removing the PCI Riser Board 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: 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.
Expansion-Card Cage (Sma ll Desktop Computer Only) w w w. d e l l . c o m | s u p p o r t . d e l l .
SECTION 10 F r o n t - Pa n e l I n s e r t s Removing Front-Panel Inserts Replacing Front-Panel Inserts w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing Front-Panel Inserts 1 2 106 Fr ont - Pan e l In se rt s 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. On the small mini-tower computer, perform the following steps.
S m a l l Fo r m - Fa c t o r C o m p u t e r Fr ont-Pane l I ns e r ts 107
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S m a l l M i n i -To w e r C o m p u t e r Fr ont-Pane l I ns e r ts 109
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Replacing Front-Panel Inserts To replace a front-panel insert, follow the appropriate procedure, in reverse, in "Removing Front-Panel Inserts.
SECTION 11 I / O Pa n e l Removing the Front I/O Panel Replacing the Front I/O Panel w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Front I/O Panel Small Form-Factor Computer 1 To access the mounting screw that holds the front I/O panel to the computer, remove the hard drive. Front I/O Panel Removal 1 2 4 3 2 112 I/O Panel 1 Front I/O cable 2 Front audio cable 3 Mounting screw 4 Control panel cable Disconnect the control panel cable from the control panel connector on the I/O panel.
3 Disconnect the front I/O cable from the front-panel connector on the system board (see "System Board Components" for the location of the front-panel connector and see "Small Form-Factor Computer" for the location of the control panel and I/O cables). 4 Remove all cables that are connected to the front I/O panel. 5 From inside the computer cover, remove the mounting screw that secures the front I/O panel to the computer. 6 Remove the front I/O panel from the computer.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Front I/O Panel Removal 1 2 3 4 114 I/O Panel 1 Control panel cable 2 Front I/O cable 3 Front audio cable 4 Mounting screw 5 Remove all cables that are connected to the front I/O panel. 6 Remove the mounting screw that secures the front I/O panel to the computer. 7 Remove the front I/O panel from the computer.
Small Mini-Tower Computer Front I/O Panel Removal 1 2 3 4 1 Control panel cable 2 Front audio cable 3 Front I/O cable 4 Mounting screw 1 Disconnect the control panel cable from the control panel connector on the I/O panel. 2 Disconnect the front I/O cable from the front-panel connector on the system board (see "System Board Components" for the location of the front-panel connector and see "Small Mini-Tower Computer" for the location of the control panel and front I/O cables).
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Note the routing of the control panel cable as you remove it from the computer so that you can replace it correctly. 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.
SECTION 12 Memory Removing a Memory Module Replacing a Memory Module w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing a Memory Module 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. Memor y Module Removal 2 1 2 1 Securing clips (2) 2 Socket Lift the module away from the socket.
Memor y Module Replacement 3 2 1 1 Socket 2 Slot 3 Securing clip Memor y 119
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SECTION 13 Microprocessor Removing the Cooling Fan/Heat-Sink Assembly and Microprocessor Replacing the Cooling Fan/Heat-Sink Assembly and Microprocessor w w w. d e l l . c o m | s u p p o r t . d e l l .
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the Cooling Fan/Heat-Sink Assembly and Microprocessor CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures." CAUTION: The microprocessor and heat sink assembly can get extremely hot. To avoid burns, be sure both have had sufficient time to cool before you touch them. 1 Disconnect the fan cable from the system board. 2 Disconnect the 12-volt power cable from the system board.
H e a t S i n k R e m o v a l — S m a l l M i n i -To w e r C o m p u t e r 2 1 3 4 5 6 5 1 Securing latches (2) 4 Retention base 2 Securing clips (2) 5 ZIF socket 3 Heat sink 6 Tabs (3) On the small form-factor and small desktop computers, remove the securing clips to remove the heat sink/blower assembly. The heat sink is attached to the blower.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m H e a t S i n k / B l o w e r A s s e m b l y R e m o v a l — S m a l l Fo r m - Fa c t o r and Small Desktop Computers 2 1 3 4 5 6 1 Latches (2) 4 Screws (2) 2 Securing clips (2) 5 Heat sink 3 Blower 6 Retention base NOTICE: Before you remove the heat sink, gently rock the heat sink, and then slightly twist it as you lift it from the system board.
NOTICE: Do not discard the original heat sink and securing clips unless you are installing a microprocessor upgrade kit from Dell. If you are not installing a microprocessor upgrade kit from Dell, reuse the original heat sink, blower, and securing clips when installing your new microprocessor. NOTICE: Lay the heat sink down with the thermal grease facing upward. Do not lay the heat sink down with the thermal grease touching the work surface. 8 Discard the original heat sink and securing clips.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m 10 Remove the microprocessor from the socket. 11 Leave the release lever extended so that the socket is ready for the new microprocessor. Replacing the Cooling Fan/Heat-Sink Assembly and Microprocessor CAUTION: Use a wrist grounding strap as explained in "Precautionary Measures." NOTICE: Be careful not to bend any of the pins when you unpack the microprocessor. Bending the pins can permanently damage the microprocessor.
Microprocessor Installation 1 1 Pin-1 corners of microprocessor and socket aligned NOTICE: You must position the microprocessor correctly in the ZIF socket to avoid permanent damage to the microprocessor and the computer when you turn on the computer. 3 Set the microprocessor lightly in the socket and make sure all pins are headed into the correct holes. Because your computer uses a ZIF socket, there is no need to use force (which could bend the pins if the microprocessor is misaligned).
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m NOTICE: If you are not installing a microprocessor upgrade kit from Dell, reuse the original blower/heat sink assembly and securing clips when replacing the microprocessor. 5 Remove the film covering the bottom of the heat sink. 6 On the small form-factor and small desktop computers, reinstall the two screws that attach the blower to the heat sink.
15 Run the Dell Diagnostics to verify that the new processor is operating correctly. See the User’s Guide for information on Dell Diagnostics. NOTE: If a setup password has been assigned by someone else, contact the network administrator for information on resetting the chassis intrusion detector.
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SECTION 14 Power Supply Removing the Power Supply Replacing the Power Supply w w w. d e l l . c o m | s u p p o r t . d e l l .
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Small Desktop Computer 1 2 1 Release button 2 AC power connector Po w e r S u p p l y 133
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m S m a l l M i n i -To w e r C o m p u t e r 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 clips in the computer 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.
7 Lift the power supply up and out of the computer. Replacing the Power Supply 1 Slide the power supply into place. 2 Reconnect the DC power cables. 3 Connect the AC power cable to the connector. 4 On the small desktop computer, reattach the power cables to the side of the hard drive and replace the expansion-card cage. 5 Run the cables underneath the clips. 6 Press the clips to close them over the cables.
Po w e r S u p p l y w w w. d e l l . c o m | s u p p o r t . d e l l .
SECTION 16 System Board System Board Components Removing the System Board Replacing the System Board w w w. d e l l . c o m | s u p p o r t . d e l l .
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1 Floppy drive 16 Audio line-out connector 2 Internal speaker 17 12-volt microprocessor power connector 3 EIDE2 connector 18 Network (upper) and USB connectors (2) (lower) 4 Front panel connector 19 Keyboard (lower) and mouse (upper) connectors 5 EIDE1 connector 20 Diagnostic lights 6 Suspend-to-RAM light 21 Serial 2 connector 7 PCI riser (small mini-tower computer only) 22 Parallel connector 8 Auxiliary power light 23 Serial 1 connector 9 AGP connector 24 Microprocessor a
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System-Board Jumper Settings Jumper Setting PSWD Description (default) Password features are enabled. Password features are disabled. RTCRST Real-time clock reset. Can be used for troubleshooting purposes. jumpered unjumpered Removing the System Board CAUTION: Before you remove any component from the system board, read the steps in "Precautionary Measures." 1 Remove any components that restrict access to the system board. 2 Disconnect all cables from the system board.
w w w. d e l l . c o m | s u p p o r t . d e l l . c o m Removing the System Board 5 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. 2 Remove the memory modules and install them on the replacement board. CAUTION: The microprocessor package and heat sink assembly can get hot.
5 Set the jumpers on the replacement system board so it is identical to the one on the existing board. 6 Orient the replacement board by aligning the notches on the bottom to the tabs on the computer floor. 7 Slide the board toward the back of the computer until it clicks into place. 8 Replace any components and cables that you removed from the system board.
System B o ard w w w. d e l l . c o m | s u p p o r t . d e l l .
