Dell OptiPlex GX50 Service Manual Download Page 76

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Removing the System Board

CAUTION:

Before you remove any component from the system board, read the steps in "

Precautionary

Measures

NOTE:

The system board and metal tray are attached and are removed as one piece.

1. Remove any components that restrict access to the system board.

2. Disconnect all cables from the system board.

3. 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.

4. Pull up on the tab and slide the system board toward the front of the computer; lift it up and away.

Removing the System Board

Summary of Contents for OptiPlex GX50

Page 1: ...ential for property damage personal injury or death Information in this document is subject to change without notice 2002 Dell Computer Corporation All rights reserved Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden Trademarks used in this text Dell the DELL logo and OptiPlex are trademarks of Dell Computer Corporation Microso...

Page 2: ...QUIPMENT Before you start to work on the computer 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 If you are disconnecting a device from the comput...

Page 3: ...e 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 Back to Contents Page ...

Page 4: ...Computer Cover Closing the Computer Cover Opening the Computer Cover NOTE If your computer is on a stand remove the stand before you open the computer cover Small Form Factor Computer 1 Security cable slot 2 Padlock ring 3 Release buttons one on each side Small Desktop Computer ...

Page 5: ...cable slot 2 Padlock ring 3 Release buttons one on each side Small Mini Tower Computer 1 Release buttons one on each side 2 Padlock ring 3 Security cable slot 1 Remove the padlock from the padlock ring if present ...

Page 6: ...her hand 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 3 Clos...

Page 7: ...nts Inside the Small Form Factor Computer 1 Hard drive 7 System board 2 3 5 inch floppy drive 8 Power supply 3 CD drive 9 AC power connector 4 Cover release buttons 2 10 I O ports and connectors 5 Internal speaker 11 Padlock ring 6 Chassis intrusion switch 12 Heat sink assembly Inside the Small Desktop Computer ...

Page 8: ... 9 Padlock ring 3 Internal speaker 10 I O ports and connectors 4 Chassis intrusion switch 11 Heat sink assembly 5 Expansion card cage 12 System board 6 Power supply 13 3 5 inch floppy drive 7 Expansion card slots 14 CD drive Inside the Small Mini Tower Computer ...

Page 9: ...e 9 Padlock ring 3 Internal speaker 10 Microprocessor and airflow shroud 4 Chassis intrusion switch 11 Power supply 5 System board 12 3 5 inch floppy drive 6 Expansion card slots 13 CD drive 7 I O ports and connectors Computer Cables Small Form Factor Computer ...

Page 10: ... 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 drive power cable 9 CD audio cable 5 IDE drive power cable hard drive Small Desktop Computer ...

Page 11: ... CD drive audio cable 5 Front I O cable 2 CD drive data cable 6 Front I O audio cable 3 3 5 inch floppy drive data cable 7 EIDE interface cable hard drive 4 Control panel cable Small Mini Tower Computer ...

Page 12: ... CD drive data cable 8 Front I O cable 4 Floppy drive data cable 9 Front I O audio cable 5 Floppy drive power cable Cable Colors Hard drive Blue pull tab Floppy drive Black pull tab CD drive Orange pull tab ATA or IDE Gray Control panel Gray CD audio Blue Computer audio Black Back to Contents Page ...

Page 13: ... Switch Dell OptiPlex GX50 Systems Removing the Chassis Intrusion Switch Replacing the Chassis Intrusion Switch Resetting the Chassis Intrusion Detector Removing the Chassis Intrusion Switch Small Form Factor Computer Small Desktop Computer ...

Page 14: ... 1 Disconnect the chassis intrusion switch cable connector from the front I O panel 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 ...

Page 15: ...2 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 NOTE If a setup password has been assigned by someone else contact the network administrato...

Page 16: ...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 2 On the small mini tower computer perform the following steps a Open the computer cover and release the insert tabs from inside the chassis b Press on the insert until it pops free of the front panel cover Small Form Fa...

Page 17: ...Small Desktop Computer ...

Page 18: ...Small Mini Tower Computer Replacing Front Panel Inserts To replace a front panel insert follow the appropriate procedure in reverse in Removing Front Panel Inserts Back to Contents Page ...

Page 19: ... blade screwdriver release the tabs from the inside of the computer and remove the plastic computer cover from the metal component Releasing the Tabs Small Form Factor Computer 1 Tabs 2 on each side 3 To remove the badge remove the accent door by pressing the middle of the door while lifting away the sides of the door a From inside the front bezel push in on the two tabs on either side of the badg...

Page 20: ...holds the control panel to the computer Small Desktop Computer 1 To remove the badge open the front USB door a From inside the door push in the two tabs on either side of the badge to release the badge b Press on the badge until it is freed 2 To remove the control panel perform the following steps a Remove the front I O panel Removing the Control Panel Small Desktop Computer ...

Page 21: ... on the badge until it is freed 2 To remove the control panel perform the following steps a Lay the computer on its right side and open the cover b Remove the top and bottom panels of the computer by releasing the eight tabs on each panel c Remove the front bezel by releasing 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 NOTE...

Page 22: ...1 Top panel 2 Bottom panel 3 Front panel tabs 3 4 Top panel tabs 8 d Close the cover and remove the front bezel Control Panel Removal ...

Page 23: ...hassis Replacing the Control Panel and Badge Small Form Factor Desktop Computer 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 Replacing the Plastic Computer Cover Small Form Factor Computer ...

Page 24: ...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 Removing the Front Mask and Accent Door Small Form Factor Computer ...

Page 25: ...place the front I O panel 3 Replace the badge by following in reverse order the procedures in Removing the Control Panel and Badge for the small desktop computer Small Mini Tower Computer 1 Replace the control panel by following the Removing the Control Panel and Badge procedure in reverse ensuring that the tabs on the top panel bottom panel and front panel are secure 2 Replace the badge by follow...

Page 26: ......

Page 27: ...e hard drive I O Panel Removal Small Form Factor Computer 1 Internal speaker cable 2 Chassis intrusion switch cable 3 Control panel cable 4 Front audio cable 5 Mounting screw 6 I O cable 2 Disconnect the control panel cable from the control panel connector on the I O panel Disconnect the I O cable from the I O panel 3 Remove all cables that are connected to the I O panel such as the chassis intrus...

Page 28: ...cable from the I O panel Note the routing of the control panel cable as you remove it from the computer so that you can replace it correctly I O Panel Removal Small Desktop Computer 1 I O cable 2 Control panel cable 3 Front audio cable 4 Mounting screw 5 Chassis intrusion switch cable 6 Internal speaker cable 4 Remove all cables that are connected to the I O panel such as the chassis intrusion swi...

Page 29: ...ctor on the I O panel Disconnect the I O cable from the I O panel Note the routing of the control panel cable as you remove it from the computer so that you can replace it correctly 2 Remove all cables that are connected to the I O panel such as the chassis intrusion switch and internal speaker cables 3 From inside the chassis cover remove the mounting screw that secures the I O panel to the chass...

Page 30: ...To replace the I O panel follow the removal procedures in reverse Back to Contents Page ...

Page 31: ...1 Disconnect the floppy drive cable from the system board 2 Remove the power cable from the interposer board 3 Remove or raise the drive by pressing on the green tabs on either side of the drive and lifting the drive up 4 Remove the floppy drive cable from the floppy drive a Remove the interposer board from the floppy drive by pressing on the tab and rotating the interposer board Removing the Inte...

Page 32: ...Tab 3 Interposer board 4 System board floppy drive connector DSKT b To release the floppy drive cable from the connector slide the lever until it is fully extended and then lift the cable away Removing the Floppy Drive Cable ...

Page 33: ...drive cable 2 Lever 5 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 Removing the Floppy Drive Small Form Factor Computer ...

Page 34: ...1 Sled tab 2 Sled Small Desktop and Small Mini Tower Computers 1 Disconnect the cables from the floppy drive and system board Small Desktop Computer ...

Page 35: ...1 Power cable 2 Floppy drive cable 3 Floppy drive system board connector Small Mini Tower Computer 1 Power cable 2 Floppy drive cable 3 Floppy drive system board connector ...

Page 36: ...r Small Desktop Computer Small Mini Tower Computer Floppy Drive Replacement Small Form Factor Desktop Computer 1 Snap the replacement drive into the sled and ensure that it is secure in the sled 2 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 ...

Page 37: ...o provide airflow for the fan and cooling vents 7 Close the computer cover reconnect your computer and devices to their electrical outlets and turn them on 8 Enter system setup and update the appropriate Diskette Drive A option to reflect the size and capacity of your new floppy drive 9 Verify that your computer works correctly by running the Dell Diagnostics Small Desktop and Mini Tower Computers...

Page 38: ... place until the tabs securely click into position 3 Attach the power and data cables to the floppy drive and connect the other end of the data cable to the connector labeled DSKT on the system board Small Desktop Computer 1 Power cable 2 Floppy drive cable 3 Floppy drive system board connector ...

Page 39: ...onnect your computer and devices to their electrical outlets and turn them on 6 Enter system setup and update the appropriate Diskette Drive A option to reflect the size and capacity of your new floppy drive 7 Verify that your computer works correctly by running the Dell Diagnostics CD Drive Removal Small Form Factor Desktop Computer 1 Remove the interposer board from the CD drive Removing the Int...

Page 40: ...d on the two tabs on the sides of the drive to disengage the drive from the computer Removing the CD Drive Small Form Factor Computer Small Desktop and Small Mini Tower Computers 1 Remove the data power and audio cables from the drive ...

Page 41: ...Removing Cables Small Desktop Computer 1 Power cable 2 Audio cable 3 CD drive cable 4 CD drive connector Removing Cables Small Mini Tower Computer ...

Page 42: ...rive cable 4 CD 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 Removing the CD Drive Small Desktop Computer ...

Page 43: ...ng the screw holes on the drive with the screw holes on the bracket rails and tightening all four screws two screws for each rail 2 If you are installing a new drive connect it to the set of rails that are attached to the inside of the cover If a set of rails is not attached to the inside of the cover contact Dell CD Drive Bracket Rails 1 Drive 2 Bracket rails 2 3 Screws 4 Small Form Factor Deskto...

Page 44: ...m Factor Computer 1 Interposer board Small Desktop and Small Mini Tower Computers 1 Gently slide the drive 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 drive power and audio cables to the drive Connecting Cables Small Desktop Computer ...

Page 45: ...1 Power cable 2 Audio cable 3 CD drive cable 4 CD drive connector Small Mini Tower Computer ...

Page 46: ... drive that has its own controller card install the controller card in an expansion slot Hard Drive Removal Small Form Factor Desktop Computer 1 Disconnect the power and hard drive data cables from the drive Removing Cables Small Form Factor Computer 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 and remove it from the com...

Page 47: ...ld drive by removing the two screws that secure each rail to the drive Drive Brackets Rails Small Desktop Computer 1 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 Shroud Small Desktop Computer ...

Page 48: ...hard drive data cables from the drive Removing Cables Small Desktop Computer 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 Removing the Hard Drive Small Desktop Computer ...

Page 49: ...cket rails attached remove the rails from the old drive by removing the two screws that secure each rail to the drive Drive Brackets Rails Small Mini Tower Computer 1 Disconnect the power and hard drive data cables from the drive Removing Cables Small Mini Tower Computer ...

Page 50: ... and slide it up and out Removing the Hard Drive Small Mini Tower Computer 1 Tabs 2 2 Hard drive 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 Drive Brackets Rails ...

Page 51: ...he 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 2 Reinstall the hard drive in the computer by gently sliding the drive into place until you hear it securely click 3 Connect the power and hard drive data cables to the drive 4 On the small desktop computer replace the hard drive shroud by ...

Page 52: ...1 Power cable 2 IDE cable 3 IDE1 connector Connecting Cables Small Desktop Computer 1 Power cable 2 IDE cable 3 IDE1 connector ...

Page 53: ...rn on the computer 8 Enter system setup and update the appropriate Primary Drive option 0 or 1 See the User s Guide for complete information on system setup 9 Reset the chassis intrusion detector 10 Restart the computer 11 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 o...

Page 54: ... Guide for complete information 13 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 Back to Contents Page ...

Page 55: ...openings and disconnect any cables that will not extend to where the cage must be placed when 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 Removing the Expansion Card Cage Replacing the Expansion Card Cage 1 Align the expansion card cage slots with the tabs in the compu...

Page 56: ... 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 board to the expansion card cage Replacing the PCI Riser Board Follow the Removing the PCI Riser Board procedures in reverse order Back to Co...

Page 57: ...system board verify that the auxiliary power light on the system board is off For the location of this light see System Board Components Removing an Expansion Card CAUTION Use a wrist grounding strap as explained in Precautionary Measures 1 If necessary disconnect any cables connected to the card 2 On the small desktop computer remove the expansion card cage 3 Press the hinged lever on the expansi...

Page 58: ...1 Card edge connector 2 Expansion card 3 Hinged lever 4 Retention arm 5 Expansion card connector Small Desktop Computer ...

Page 59: ...5 Expansion card connector 2 Lever 6 Riser board 3 Expansion card 7 Expansion card cage 4 Card edge connector Small Mini Tower Computer 1 Expansion card 2 Card edge connector 3 Expansion card connector 4 Retention arm ...

Page 60: ...rd 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 2 Raise the lever that covers the card slot opening on the back of the computer 3 If there is a filler bracket remove the filler bracket by raising the hinged lever and sliding the bracket up Replacing an Expan...

Page 61: ...or 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 the card toward its connector on the system board Insert the card firmly into the expansion card connector on the system board Expansion Card Connection ...

Page 62: ... within slot 2 Bracket caught outside of slot 3 Fully seated card 4 Not fully seated card Replacing an Expansion Card Small Mini Tower Computer 1 Filler bracket 2 Alignment bar 3 Alignment guide 4 Retention arm ...

Page 63: ...in the computer 6 Connect any cables that should be attached to the card 7 In the small desktop computer replace the expansion card cage 8 Reconnect the computer and devices to their electrical outlets and turn them on 9 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...

Page 64: ... and pops out slightly from the socket Removing the Memory Module 2 Lift the module away from the socket Replacing a Memory Module NOTICE To avoid damage to the memory module press the module straight down into the socket with equal force applied at each end of the module 1 Insert the module straight down into the connector ensuring that it fits into the vertical guides at each end of the connecto...

Page 65: ...Back to Contents Page ...

Page 66: ...rap 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 cooling fan power cable from the FAN connector on the system board 2 On the small mini tower computer remove the airflow shroud as shown in the following illustration Airflow Shroud Rem...

Page 67: ...ou can unhook the ends of the clip from the tabs on each side of the ZIF socket c Remove the clip from the socket and then lift the heat sink from the microprocessor Removing the Securing Clip 1 ZIF socket tab 2 Toggle lever 4 Remove the microprocessor chip from the socket Removing the Microprocessor Chip ...

Page 68: ...croprocessor Replacing the Microprocessor and Cooling Fan Heat Sink Assembly 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 NOTICE You must position the microprocessor correctly in the ZIF socket to avoid permanent damage to the mic...

Page 69: ...embly on top of the microprocessor b 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 c Rotate the lever upward until it snaps into place d Replace the memory module that you removed in step 3 of the previous procedure NOTE If you are installing a microprocessor replacement kit from Dell retu...

Page 70: ...g the left or right arrow key to select Reset and then choosing Enabled Enabled Silent or Disabled See the User s Guide for information on the chassis intrusion detector NOTE If a setup password has been assigned by someone else contact the network administrator for information on resetting the chassis intrusion detector 12 Run the Dell Diagnostics to verify that the new processor is operating cor...

Page 71: ...nts Page Power Supply Dell OptiPlex GX50 Systems Removing the Power Supply Replacing the Power Supply Removing the Power Supply Small Form Factor Computer 1 Release button 2 AC power connector Small Desktop Computer ...

Page 72: ...1 Push button 2 DC power cable 3 AC power connector Small Mini Tower Computer 1 Push button 2 DC power cable 3 AC power connector ...

Page 73: ... while simultaneously pulling on the metal clips with your fingers 4 On the small mini tower computer remove the two screws that attach the power supply to the rear wall 5 Press the push button 6 Slide the power supply toward the front of the computer approximately 1 inch 7 Lift the power supply up and out of the computer Replacing the Power Supply 1 Slide the power supply into place 2 Reconnect t...

Page 74: ...1 Floppy drive connector 13 Front panel audio connector 2 Battery 14 Video connector upper and audio connectors lower 3 EIDE2 connector 15 Modem connector 4 EIDE1 connector 16 Network connector upper and USB connectors 2 lower 5 Front panel connector 17 Keyboard lower and mouse upper connectors 6 PCI riser board small mini tower computer only 18 Diagnostic lights ...

Page 75: ...sockets DSKT Floppy drive interface connector FAN Microprocessor fan connector FRONTAUDIO Front panel audio connector for onboard audio FRONTPANEL Front panel cable connector IDE1 Primary IDE interface connector IDE2 Secondary IDE interface connector KYBD_MOUSE Keyboard and mouse connectors MICROPROCESSOR Microprocessor connector MODEM Telephony connector MONITOR Video connector NIC_USB Integrated...

Page 76: ...ece 1 Remove any components that restrict access to the system board 2 Disconnect all cables from the system board 3 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 4 Pull up on the tab and slide the system board toward the front of the computer lift it up and away Removing the System...

Page 77: ...tem board 5 Set the jumper on the replacement system board so it is identical to the one on the existing board NOTE Some components and connectors on the replacement system board may be in different locations than the corresponding connectors on the existing system 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 ...

Page 78: ...ALERT Cover was previously removed 11 Reset the chassis intrusion detector Back to Contents Page ...

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