Dell OptiPlex GX240 Service Manual
Dell OptiPlex GX240 Manual
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- Dell OptiPlex GX240 | Service Manual - Page 1
Dell™ OptiPlex™ GX240 SERVICE MANUAL www.dell.com support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 2
rights reserved. Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden. Trademarks used in this text: Dell, the DELL logo, and OptiPlex are trademarks of Dell Computer Corporation. Other trademarks and trade names may be used in this - Dell OptiPlex GX240 | Service Manual - Page 3
Measures 10 2 Computer Cover Opening the Computer Cover 14 Closing the Computer Cover 17 3 Inside the Computer Key Components 20 Computer Cables 23 4 Battery Removing the Battery 28 Replacing the Battery 28 5 Badge Removing the Badge 30 Small Form-Factor Computer 30 Small Desktop and Small - Dell OptiPlex GX240 | Service Manual - Page 4
Form-Factor Computer 50 Small Desktop Computer 53 Small Mini-Tower Computer 55 Replacing the Floppy Drive 55 Small Form-Factor Computer 55 Small Desktop Computer 58 Small Mini-Tower Computer 59 Removing the CD/DVD Drive 60 Small Form-Factor Computer 60 Small Desktop Computer 62 4 Contents - Dell OptiPlex GX240 | Service Manual - Page 5
Desktop Computer 90 Small Mini-Tower Computer 91 Replacing an Expansion Card 92 Small Form-Factor, Desktop, and Mini-Tower Computers . . . . 92 Removing an AGP Graphics Card 96 Small Form-Factor Computer 96 Small Desktop Computer 96 Small Mini-Tower Computer 97 Replacing an AGP Graphics Card - Dell OptiPlex GX240 | Service Manual - Page 6
I/O Panel 112 Small Form-Factor Computer 112 Small Desktop Computer 113 Small Mini-Tower Computer 115 Replacing the Front I/O Panel 116 12 Memory Removing a Memory Module 118 Replacing a Memory Module 118 13 Microprocessor Removing the Cooling Fan/Heat-Sink Assembly and Microprocessor 122 - Dell OptiPlex GX240 | Service Manual - Page 7
14 Power Supply Removing the Power Supply 132 Replacing the Power Supply 135 15 System Board System Board Components 138 Removing the System Board 141 Replacing the System Board 142 Contents 7 - Dell OptiPlex GX240 | Service Manual - Page 8
8 Contents - Dell OptiPlex GX240 | Service Manual - Page 9
SECTION 1 Before You Begin Getting Started Precautionary Measures www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 10
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 11
the location of this light). 4 Wear a wrist grounding strap, and clip it to an unpainted metal surface, such as the padlock ring on the back of the computer. If a wrist grounding strap is not available, touch an unpainted metal surface on the computer, such as the power supply, to discharge static - Dell OptiPlex GX240 | Service Manual - Page 12
www.dell.com | support.dell.com 12 B e f o r e You B e g i n - Dell OptiPlex GX240 | Service Manual - Page 13
SECTION 2 Computer Cover Opening the Computer Cover Closing the Computer Cover www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 14
www.dell.com | support.dell.com NOTE: If your computer is on a stand, remove the stand before you open the computer cover. Opening the Computer Cover Small Form-Factor Computer 1 3 2 1 Security cable slot 2 Padlock ring 3 Release buttons (one on each side) 14 Computer Cover - Dell OptiPlex GX240 | Service Manual - Page 15
Small Desktop Computer 1 2 1 Padlock ring 2 Release buttons (one on each side) Computer Cover 15 - Dell OptiPlex GX240 | Service Manual - Page 16
www.dell.com | support.dell.com Small Mini-Tower Computer 1 2 1 Padlock ring 2 Release buttons (one on each side) 1 Remove the padlock from the padlock ring, if present. NOTICE: Do not open the cover if the computer is on the edge of a desk or table. Doing so may cause the computer to tip over and - Dell OptiPlex GX240 | Service Manual - Page 17
. 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 at the next computer startup: ALERT! Cover was previously removed. See "Resetting the Chassis Intrusion Detector" for instructions. Computer Cover 17 - Dell OptiPlex GX240 | Service Manual - Page 18
www.dell.com | support.dell.com 18 Computer Cover - Dell OptiPlex GX240 | Service Manual - Page 19
SECTION 3 Inside the Computer Key Components Computer Cables www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 20
www.dell.com | support.dell.com NOTE: User service access points are colorcoded green. Key Components Small Form-Factor Computer 2 1 12 11 3 4 5 6 10 9 7 8 1 Hard drive 7 System board 2 3.5-inch floppy drive 8 Power supply 3 CD/DVD drive 9 AC power connector 4 Cover release buttons (2) - Dell OptiPlex GX240 | Service Manual - Page 21
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 3.5-inch floppy drive 7 Expansion-card slots 14 CD/DVD drive Inside the Computer - Dell OptiPlex GX240 | Service Manual - Page 22
release buttons (2) 2 Hard drive 3 Internal speaker 4 Chassis intrusion switch 5 System board 6 Expansion-card slots 7 I/O ports and connectors 8 AC power connector 9 Padlock ring 10 Microprocessor and airflow shroud 11 Power supply 12 3.5-inch floppy drive 13 CD/DVD drive 22 Inside the Computer - Dell OptiPlex GX240 | Service Manual - Page 23
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 - Dell OptiPlex GX240 | Service Manual - Page 24
www.dell.com | support.dell.com Small Desktop Computer 12 3 4 56 7 1 CD/DVD drive audio cable 5 Input/output cable 2 CD/DVD drive data cable 6 Input/output audio cable 3 Floppy drive data cable 7 IDE data cable (hard drive) 4 Control panel cable 24 Inside the Computer - Dell OptiPlex GX240 | Service Manual - Page 25
Small Mini-Tower Computer 3 4 5 67 2 8 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 - Dell OptiPlex GX240 | Service Manual - Page 26
www.dell.com | support.dell.com Cable Colors Device Color Hard drive Blue Floppy drive Black CD/DVD drive Orange USB Gray ATA, IDE, or EIDE drive Green Control panel Yellow CD/DVD audio Blue Computer audio Black 26 Inside the Computer - Dell OptiPlex GX240 | Service Manual - Page 27
SECTION 4 Battery Removing the Battery Replacing the Battery www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 28
.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 29
SECTION 5 Badge Removing the Badge Replacing the Badge www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 30
www.dell.com | support.dell.com 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 30 Badge 1 Tabs (2 - Dell OptiPlex GX240 | Service Manual - Page 31
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 - Dell OptiPlex GX240 | Service Manual - Page 32
www.dell.com | support.dell.com Computer Cover Replacement 32 Badge 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 - Dell OptiPlex GX240 | Service Manual - Page 33
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 33 - Dell OptiPlex GX240 | Service Manual - Page 34
www.dell.com | support.dell.com 34 Badge - Dell OptiPlex GX240 | Service Manual - Page 35
SECTION 6 Chassis Intrusion Switch Removing the Chassis Intrusion Switch Replacing the Chassis Intrusion Switch Resetting the Chassis Intrusion Detector www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 36
www.dell.com | support.dell.com Removing the Chassis Intrusion Switch Small Form-Factor Computer 36 Chassis Intr usion Switch - Dell OptiPlex GX240 | Service Manual - Page 37
Small Desktop Computer Chass is Intr usion Switch 37 - Dell OptiPlex GX240 | Service Manual - Page 38
www.dell.com | support.dell.com Small Mini-Tower Computer 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 - Dell OptiPlex GX240 | Service Manual - Page 39
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 - Dell OptiPlex GX240 | Service Manual - Page 40
www.dell.com | support.dell.com 40 Chassis Intr usion Switch - Dell OptiPlex GX240 | Service Manual - Page 41
www.dell.com | support.dell.com SECTION 7 Control Panel - Dell OptiPlex GX240 | Service Manual - Page 42
www.dell.com | support.dell.com 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. Computer Cover Removal 1 42 Co n t rol - Dell OptiPlex GX240 | Service Manual - Page 43
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. Control Panel 43 - Dell OptiPlex GX240 | Service Manual - Page 44
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 45
Front Bezel Tabs-Small Mini-Tower Computer 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. Control Panel 45 - Dell OptiPlex GX240 | Service Manual - Page 46
www.dell.com | support.dell.com 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 1 Replace the control panel and the control-panel shield. 2 Replace the plastic - Dell OptiPlex GX240 | Service Manual - Page 47
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. Control Panel 47 - Dell OptiPlex GX240 | Service Manual - Page 48
www.dell.com | support.dell.com Front Mask and Accent Door Removal-Small Form-Factor 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 - Dell OptiPlex GX240 | Service Manual - Page 49
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 www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 50
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 51
b To release the floppy-drive cable from the connector, slide the lever until it is fully extended, and then lift the cable away. Drives 51 - Dell OptiPlex GX240 | Service Manual - Page 52
www.dell.com | support.dell.com Removing the Floppy-Drive Cable 1 2 or 1 2 52 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 53
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 - Dell OptiPlex GX240 | Service Manual - Page 54
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 55
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. Drives 55 - Dell OptiPlex GX240 | Service Manual - Page 56
www.dell.com | support.dell.com 2 Connect the interposer board to the floppy drive. a Slide the floppy-drive cable into the connector. , and snap the interposer board onto the drive. 3 Gently slide the floppy drive into the computer until the tabs securely click into position. 56 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 57
Attaching the Floppy-Drive Data Cable 1 2 3 4 or 1 2 3 4 Drives 57 - Dell OptiPlex GX240 | Service Manual - Page 58
, and turn them on. 9 Enter system setup and update the appropriate Diskette Drive A option to reflect the size and capacity of your new floppy drive. 10 Verify that your computer works correctly by running the Dell Diagnostics. Small Desktop Computer 1 If the replacement drive does not have the - Dell OptiPlex GX240 | Service Manual - Page 59
1 2 3 1 Power cable 2 Floppy-drive data cable 3 Floppy-drive connector Small Mini-Tower Computer 1 If the replacement drive the floppy drive into place until the tabs click securely into position. 3 Attach the power and floppy-drive data cables to the floppy drive, and connect the other end of - Dell OptiPlex GX240 | Service Manual - Page 60
www.dell.com | support.dell.com 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 Remove the interposer board from the CD/DVD drive. 60 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 61
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. Drives 61 - Dell OptiPlex GX240 | Service Manual - Page 62
www.dell.com | support.dell.com CD/DVD Drive Removal Small Desktop Computer 1 Remove the data, power, and audio cables from the drive. 62 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 63
Cable Removal 2 1 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 - Dell OptiPlex GX240 | Service Manual - Page 64
www.dell.com | support.dell.com Drive Bracket Rail Removal Small Mini-Tower Computer 1 Remove the data, power, and audio cables from the drive. 64 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 65
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. Drives 65 - Dell OptiPlex GX240 | Service Manual - Page 66
www.dell.com | support.dell.com 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. Drive Bracket Rail Removal 66 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 67
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 - Dell OptiPlex GX240 | Service Manual - Page 68
www.dell.com | support.dell.com Interposer Board Replacement 1 2 3 or 1 2 3 68 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 69
your fingers. b Remove the insert by pressing it until it pops free. c Replace the front-panel piece by snapping it into place. Small Desktop 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. Drives 69 - Dell OptiPlex GX240 | Service Manual - Page 70
www.dell.com | support.dell.com Cable Replacement 2 1 3 4 70 D r i v e s 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 - Dell OptiPlex GX240 | Service Manual - Page 71
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. Cable Replacement 1 2 3 4 Drives 71 - Dell OptiPlex GX240 | Service Manual - Page 72
www.dell.com | support.dell.com 1 Power cable 2 Audio cable 3 Data cable 4 Drive connector If your computer came with an IDE CD drive, controller card, install the controller card in an expansion slot. 4 Check all cable connections, and fold cables out of the way to provide airflow for the fan and - Dell OptiPlex GX240 | Service Manual - Page 73
Cable Removal 1 2 1 Power cable 2 Hard-drive cable 2 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. Drives 73 - Dell OptiPlex GX240 | Service Manual - Page 74
www.dell.com | support.dell.com Hard Drive Removal 1 2 1 Notch in drive rail 2 Tabs (2) 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. Small Desktop Computer 1 The hard drive - Dell OptiPlex GX240 | Service Manual - Page 75
Hard-Drive Shroud Removal 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. 2 Disconnect the power and hard-drive data cables from the drive. Drives 75 - Dell OptiPlex GX240 | Service Manual - Page 76
www.dell.com | support.dell.com Cable Removal 1 2 1 Hard-drive cable 2 Power cable 3 Press in on the tabs on each side of the drive and slide it up and out. 76 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 77
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. Drives 77 - Dell OptiPlex GX240 | Service Manual - Page 78
www.dell.com | support.dell.com Cable Removal 1 2 1 Power cable 2 Hard-drive cable 2 Press in on the tabs on each side of the drive and slide it up and out. 78 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 79
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 the drive into place until you hear it securely click. 2 Connect the power cable to the drive, and connect the IDE data cable to the drive and - Dell OptiPlex GX240 | Service Manual - Page 80
www.dell.com | support.dell.com Small Form-Factor Computer Hard Drive Replacement 1 2 3 1 Power cable 2 IDE data cable 3 IDE1 connector 80 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 81
Small Desktop Computer Hard Drive Replacement 1 2 3 1 Power cable 2 IDE data cable 3 IDE1 connector Drives 81 - Dell OptiPlex GX240 | Service Manual - Page 82
www.dell.com | support.dell.com Small Mini-Tower Computer Hard Drive Replacement 1 2 82 D r i v e s 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 - Dell OptiPlex GX240 | Service Manual - Page 83
drive before proceeding to the next step. For partition and format instructions, see the documentation that came with the operating system. 11 Test the hard drive by running the Dell Diagnostics. See "Solving Problems" in the User's Guide for complete information. 12 If the drive you just installed - Dell OptiPlex GX240 | Service Manual - Page 84
www.dell.com | support.dell.com 4 Remove the two green plastic drive rails inside the lower hard- bay. c Gently slide the first hard drive into the lower bay until you hear a click. d Reconnect the power cable and the data cable to the back of the hard drive. 7 Gently slide the new hard drive into - Dell OptiPlex GX240 | Service Manual - Page 85
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 - Dell OptiPlex GX240 | Service Manual - Page 86
www.dell.com | support.dell.com 86 D r i v e s - Dell OptiPlex GX240 | Service Manual - Page 87
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 www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 88
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 89
from the computer or removing a component from the system board, verify that the auxiliary power light on the system 1 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 - Dell OptiPlex GX240 | Service Manual - Page 90
install a metal filler bracket over the empty card-slot opening. Expansion Card Removal 1 2 3 4 5 1 Card-edge connector 2 Expansion card 3 Hinged lever 4 Retention arm 5 Expansion-card connector Small Desktop Computer 1 Remove the expansion-card cage. 2 If necessary, disconnect any cables connected - Dell OptiPlex GX240 | Service Manual - Page 91
riser board. 5 If you are removing the card permanently, install a metal filler bracket over the empty card-slot opening. Small Mini-Tower Computer 1 If necessary, disconnect any cables connected to the card. 2 Press the lever on the expansion card retention arm and raise the retention arm. Expans - Dell OptiPlex GX240 | Service Manual - Page 92
www.dell.com | support.dell.com Small Mini-Tower Computer 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, - Dell OptiPlex GX240 | Service Manual - Page 93
, for your particular computer in "Removing an Expansion Card." 3 Place the expansion card on the connector and press down firmly. Make sure that the card is fully seated in the slot. If the expansion card is full-length, insert the end of the card into the expansion-card guide bracket as you lower - Dell OptiPlex GX240 | Service Manual - Page 94
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 95
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 at the next computer start-up: ALERT! Cover was previously removed. See "Resetting the Chassis Intrusion Detector" for instructions. Expans ion Card 95 - Dell OptiPlex GX240 | Service Manual - Page 96
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 97
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. - Dell OptiPlex GX240 | Service Manual - Page 98
www.dell.com | support.dell.com AGP Slot Filler Bracket Removal 1 1 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. 98 Expans ion Card - Dell OptiPlex GX240 | Service Manual - Page 99
Replacing an AGP Graphics Card Small Form-Factor, Small Desktop, and Small Mini-Tower Computers 6 1 5 4 3 2 1 AGP card 2 System board 3 AGP card clip 4 AGP card clip tab 5 AGP card clip lever 6 AGP card notch 1 Press the AGP card clip lever, ensuring that the tab on the AGP card clip lever - Dell OptiPlex GX240 | Service Manual - Page 100
www.dell.com | support.dell.com 100 Expans ion Card - Dell OptiPlex GX240 | Service Manual - Page 101
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 www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 102
1 Align the slots in the side of the expansion-card cage with the tabs on the side of the computer, and slide the expansion-card cage down into place. 2 Make sure that the riser board is fully seated in the RISER connector on the system board. 102 Expansion-Card Cage (Sma ll Desktop Computer Only) - Dell OptiPlex GX240 | Service Manual - Page 103
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. 3 Remove the two screws that attach the riser - Dell OptiPlex GX240 | Service Manual - Page 104
www.dell.com | support.dell.com 104 Expansion-Card Cage (Sma ll Desktop Computer Only) - Dell OptiPlex GX240 | Service Manual - Page 105
SECTION 10 Front-Panel Inserts Removing Front-Panel Inserts Replacing Front-Panel Inserts www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 106
dell.com | support.dell.com Removing Front-Panel Inserts 1 On the small form-factor and small desktop computers, perform the following steps. a Face the front of the computer -tower computer, perform the following steps. a Open the computer cover to a 45-degree angle and disconnect the CD/DVD drive - Dell OptiPlex GX240 | Service Manual - Page 107
Small Form-Factor Computer Fr ont-Panel Inserts 107 - Dell OptiPlex GX240 | Service Manual - Page 108
www.dell.com | support.dell.com Small Desktop Computer 108 Fr ont-Panel Inserts - Dell OptiPlex GX240 | Service Manual - Page 109
Small Mini-Tower Computer Fr ont-Panel Inserts 109 - Dell OptiPlex GX240 | Service Manual - Page 110
www.dell.com | support.dell.com Replacing Front-Panel Inserts To replace a front-panel insert, follow the appropriate procedure, in reverse, in "Removing Front-Panel Inserts." 110 Fr ont-Panel Inserts - Dell OptiPlex GX240 | Service Manual - Page 111
SECTION 11 I/O Panel Removing the Front I/O Panel Replacing the Front I/O Panel www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 112
www.dell.com | support.dell.com 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 1 Front I/O cable 2 Front audio cable 3 Mounting screw 4 Control panel cable - Dell OptiPlex GX240 | Service Manual - Page 113
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 Desktop Computer" for the location of the control panel and I/O cables). Note the routing of the control panel cable as you remove it from the - Dell OptiPlex GX240 | Service Manual - Page 114
www.dell.com | support.dell.com Front I/O Panel Removal 1 2 3 4 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 - Dell OptiPlex GX240 | Service Manual - Page 115
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- - Dell OptiPlex GX240 | Service Manual - Page 116
www.dell.com | support.dell.com 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 I/O Panel To replace the front I/O panel, follow the removal procedure for your computer in reverse. 116 I/O Panel - Dell OptiPlex GX240 | Service Manual - Page 117
SECTION 12 Memory Removing a Memory Module Replacing a Memory Module www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 118
www.dell.com | support.dell.com 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. Memory Module Removal 2 1 1 Securing - Dell OptiPlex GX240 | Service Manual - Page 119
Memory Module Replacement 3 2 1 1 Socket 2 Slot 3 Securing clip Memor y 119 - Dell OptiPlex GX240 | Service Manual - Page 120
www.dell.com | support.dell.com 120 Memor y - Dell OptiPlex GX240 | Service Manual - Page 121
SECTION 13 Microprocessor Removing the Cooling Fan/Heat-Sink Assembly and Microprocessor Replacing the Cooling Fan/Heat-Sink Assembly and Microprocessor www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 122
www.dell.com | support.dell.com Removing the Cooling Fan/Heat-Sink Assembly and Microprocessor CAUTION: Use touch them. 1 Disconnect the fan cable from the system board. 2 Disconnect the 12-volt power cable from the system board. 3 On the small mini-tower computer, rotate the airflow shroud. Air - Dell OptiPlex GX240 | Service Manual - Page 123
1 3 4 5 6 1 Securing latches (2) 4 Retention base 2 Securing clips (2) 5 ZIF socket 3 Heat sink 6 Tabs (3) 5 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. Microprocessor 123 - Dell OptiPlex GX240 | Service Manual - Page 124
www.dell.com | support.dell.com Heat Sink/Blower Assembly Removal-Small Form-Factor and Small Desktop Computers 2 1 3 4 5 6 1 Latches (2) 2 Securing clips (2) 3 Blower 4 Screws (2) 5 Heat sink 6 Retention base NOTICE: Before you remove the heat sink, gently rock the heat sink, and then - Dell OptiPlex GX240 | Service Manual - Page 125
: 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 - Dell OptiPlex GX240 | Service Manual - Page 126
www.dell.com | support.dell.com 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 " - Dell OptiPlex GX240 | Service Manual - Page 127
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 you are installing a microprocessor replacement kit from Dell, return the microprocessor to Dell in the same package in which your replacement kit - Dell OptiPlex GX240 | Service Manual - Page 128
sink. 10 Plug the fan cable into its connector on the system board. 11 Plug the 12-volt power cable into its connector on the system board. 12 Close the computer cover, reconnect your computer and devices to their electrical outlets, and turn them on. As the computer boots, it detects the presence - Dell OptiPlex GX240 | Service Manual - Page 129
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. - Dell OptiPlex GX240 | Service Manual - Page 130
www.dell.com | support.dell.com 130 Microprocessor - Dell OptiPlex GX240 | Service Manual - Page 131
SECTION 14 Power Supply Removing the Power Supply Replacing the Power Supply www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 132
www.dell.com | support.dell.com Removing the Power Supply Small Form-Factor Computer 1 2 1 Release button 2 AC power connector 132 Power Supply - Dell OptiPlex GX240 | Service Manual - Page 133
Small Desktop Computer 1 2 1 Release button 2 AC power connector Power Supply 133 - Dell OptiPlex GX240 | Service Manual - Page 134
www.dell.com | support.dell.com Small Mini-Tower Computer 134 Power Supply 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 - Dell OptiPlex GX240 | Service Manual - Page 135
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 - Dell OptiPlex GX240 | Service Manual - Page 136
www.dell.com | support.dell.com 136 Power Supply - Dell OptiPlex GX240 | Service Manual - Page 137
SECTION 16 System Board System Board Components Removing the System Board Replacing the System Board www.dell.com | support.dell.com - Dell OptiPlex GX240 | Service Manual - Page 138
www.dell.com | support.dell.com System Board Components 12 3 4 5 30 6 29 28 27 7 26 25 8 9 24 10 11 12 23 22 21 20 19 18 17 16 15 14 13 138 System B oard - Dell OptiPlex GX240 | Service Manual - Page 139
20 Diagnostic lights 21 Serial 2 connector 22 Parallel connector 23 Serial 1 connector 24 Microprocessor and heat sink 25 Memory module (DIMM) connectors 26 Fan connector 27 Main power connector 28 Battery 29 RTC reset jumper 30 Password jumper System Board Labels Connector or Socket AUDIO AUX_PWR - Dell OptiPlex GX240 | Service Manual - Page 140
connector Integrated network adapter connector and USB connectors Parallel and serial port connectors PCI expansion card connectors Main power input connector 12-volt power connector Password jumper RTC reset jumper Internal speaker Suspend-to-RAM light Vertical riser board connector; horizontal PCI - Dell OptiPlex GX240 | Service Manual - Page 141
) Password features are enabled. RTCRST jumpered Password features are disabled. Real-time clock reset. Can be used for troubleshooting purposes up on the tab and slide the system board toward the front of the computer; lift it up and away. NOTE: The system board and metal tray are attached and - Dell OptiPlex GX240 | Service Manual - Page 142
www.dell.com | support.dell.com 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 - Dell OptiPlex GX240 | Service Manual - Page 143
, and reconnect the computer and devices to their power sources and turn them on. NOTE: After you 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. 10 Reset the chassis intrusion detector - Dell OptiPlex GX240 | Service Manual - Page 144
www.dell.com | support.dell.com 144 System B oard
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Dell™ OptiPlex™ GX240
SERVICE MANUAL