Dell OptiPlex 270 Service Manual

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Dell™ OptiPlex™ GX270 Service Manual
 
Safety Instructions
Opening the Computer Cover
Chassis Intrusion Switch
Control Panel
I/O Panel
Power Supply
System Board
Closing the Computer Cover
To remove or replace all other GX270 components, see the
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.
© 2003–2004 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, and OptiPlex are trademarks of Dell Inc.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any
proprietary interest in trademarks and trade names other than its own.
June 2004 Rev. A01
Dell OptiPlex GX270 Systems User's
Guide.

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  Summary of Contents for Dell OptiPlex 270

  • Page 1 Trademarks used in this text: Dell, the DELL logo, and OptiPlex are trademarks of Dell Inc. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
  • Page 2: Removing The Chassis Intrusion Switch

    Back to Contents Page Chassis Intrusion Switch Dell™ OptiPlex™ GX270 Service Manual    Removing the Chassis Intrusion Switch   Replacing the Chassis Intrusion Switch   Resetting the Chassis Intrusion Detector     CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety...
  • Page 3: Replacing The Chassis Intrusion Switch

    Small Mini-Tower Computer   Replacing the Chassis Intrusion Switch 1.  Slide the chassis intrusion switch into its slot and reconnect the cable to the connector on the control panel. 2.  Close the computer cover. 3.  Attach the computer stand, if it is used.  ...
  • Page 4 NOTE: The default is Enabled-Silent.   NOTE: If a setup password has been assigned by someone else, contact the network administrator for information on resetting the chassis intrusion detector. 3.  Press <Alt><b> to restart the computer and implement your changes. Back to Contents Page  ...
  • Page 5: Removing The Control Panel

    Back to Contents Page Control Panel Dell™ OptiPlex™ GX270 Service Manual    Removing the Control Panel   Replacing the Control Panel    CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety Instructions."    NOTICE: Before you disconnect a device from the computer or remove a component from the system board, verify that the standby power light on the system board has turned off.
  • Page 6: Small Desktop Computer

      1  metal control-panel shield 2  screw 2.  Remove the metal control-panel shield. 3.  Remove the screw that holds the control panel to the computer, and remove the control panel.   Small Desktop Computer 1.  Remove the front I/O panel (see Panel).
  • Page 7: Replacing The Control Panel

      1  computer cover tab (remove the CD drive to access this tab) 4  bottom panel 2  top-panel tabs 5  computer cover screw 3  top panel 6  computer cover tabs (2) 2.  To prepare the computer cover for removal, release the three computer cover tabs (one tab is located by the CD drive and two tabs are located by the I/O panel).
  • Page 8 2.  Replace the computer cover. Ensure that the two metal hooks and tabs are securely in position.   To help replace the computer cover, remove the accent door and front mask from the computer cover: a.  Remove the front mask by releasing the tabs on the inside of the computer cover. b.
  • Page 9 Follow the steps in the "Removing the Control Panel" procedure in the reverse order, ensuring that all tabs are secure.   Small Mini-Tower Computer   Follow the steps in the "Removing the Control Panel" procedure in the reverse order, ensuring that all tabs are secure. Back to Contents Page  ...
  • Page 10: Opening The Computer Cover

    Back to Contents Page Opening the Computer Cover Dell™ OptiPlex™ GX270 Service Manual     CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety Instructions." 1.  Shut down the computer through the Start menu. 2.  Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.
  • Page 11   1  security cable slot 2  padlock ring 3  release buttons (one on each side)   Small Mini-Tower Computer 1.  Lay the computer on its side as shown in the illustration. 2.  Open the cover: a.  Facing the back of the computer, press the release button on the right side of the computer with one hand while pulling up on the top of the cover with the other hand.
  • Page 12: Closing The Computer Cover

    Back to Contents Page Closing the Computer Cover Dell™ OptiPlex™ GX270 Service Manual     CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety Instructions." 1.  Ensure that all cables are connected, and fold cables out of the way.
  • Page 13: Removing The I/O Panel

    Back to Contents Page I/O Panel Dell™ OptiPlex™ GX270 Service Manual    Removing the I/O Panel    Replacing the I/O Panel CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety Instructions." NOTICE: Before you disconnect a device from the computer or remove a component from the system board, verify that the standby power light on the system board has turned off.
  • Page 14: Replacing The I/O Panel

    2  chassis-intrusion switch cable 5  front audio cable 3  control panel cable 6  I/O cable Small Desktop Computer     1  chassis-intrusion switch cable 4  control panel cable 2  internal speaker cable 5  front audio cable 3  I/O cable 6  mounting screw Small Mini-Tower Computer  ...
  • Page 15: Removing The Power Supply

    Back to Contents Page Power Supply Dell™ OptiPlex™ GX270 Service Manual    Removing the Power Supply    Replacing the Power Supply   CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety Instructions." NOTICE: Before you disconnect a device from the computer or remove a component from the system board, verify that the standby power light on the system board has turned off.
  • Page 16 1  release button 2  AC power connector 3.  Slide the power supply toward the front of the computer approximately 1 inch. 4.  Lift the power supply up and out of the computer.   Small Desktop Computer 1.  Disconnect the DC power cables from the system board and the drives.  ...
  • Page 17: Replacing The Power Supply

    4.  Slide the power supply toward the front of the computer approximately 1 inch. 5.  Lift the power supply up and out of the computer. Replacing the Power Supply 1.  Slide the power supply into place. 2.  On the small mini-tower computer, replace the two screws that secure the power supply to the back of the computer frame. 3.
  • Page 18: System Board

    Back to Contents Page System Board Dell™ OptiPlex™ GX270 Service Manual   Small Form-Factor System Board                                                      floppy-drive connector (DSKT) 11  CD drive audio cable connector (CD_IN)  CD/DVD drive connector (IDE2)
  • Page 19    floppy-drive connector (DSKT) 11  CD drive audio cable connector (CD_IN)  CD/DVD drive connector (IDE2) 12  front-panel audio cable connector (FRONTAUDIO)  battery socket (BATTERY) 13  power connector (12VPOWER)  front-panel connector (FRONTPANEL) 14  serial port connector (SER2) for optional serial port cards  IDE hard-drive connector (IDE1) 15  microprocessor and heat sink connector (CPU)  serial ATA hard-drive connector (SATA1) 16  microprocessor fan connector (FAN)
  • Page 20: Jumper Settings

       floppy-drive connector (DSKT) 12  CD drive audio cable connector (CD_IN)  CD/DVD drive connector (IDE2) 13  front-panel audio cable connector (FRONTAUDIO)  battery socket (BATTERY) 14  power connector (12VPOWER)  front-panel connector (FRONTPANEL) 15  serial port connector (SER2) for optional serial port cards  IDE hard-drive connector (IDE1) 16  microprocessor and heat sink connector (CPU)  serial ATA hard-drive connector (SATA2) 17  microprocessor fan connector (FAN)
  • Page 21: Removing The System Board

    1.  Shut down the computer through the Start menu. 2.  Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.  ...
  • Page 22: Replacing The System Board

    10.  Remove the system board: a.  If your system board is attached to a metal tray, the board and the tray are connected and are removed as one piece. Pull up on the tab and slide the system board assembly toward the front of the computer, and then lift the board up and away. b.
  • Page 23 Back to Contents Page  ...
  • Page 24: When Using Your Computer

      CAUTION: Do not attempt to service the computer yourself, except as explained in your online Dell™ documentation or in instructions otherwise  provided to you by Dell. Always follow installation and service instructions closely.   NOTICE: To help avoid possible damage to the system board, wait 5 seconds after turning off the computer before removing a component from the system board or disconnecting a device from the computer.
  • Page 25: Protecting Against Electrostatic Discharge

    2.  Turn off your computer and any devices connected to the computer. 3.  Ground yourself by touching an unpainted metal surface on the chassis before touching anything inside your computer.   While you work, periodically touch an unpainted metal surface on the computer chassis to dissipate any static electricity that might harm internal components.

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Optiplex gx270