Dell™ M140 Service Manual Before You Begin Display Assembly and Display Latch System Components Palm Rest Internal Card With Bluetooth® Wireless Technology Microprocessor Thermal-Cooling Assembly Hard Drive Fan Optical Drive Microprocessor Module Memory Module and Modem Speakers Hinge Cover System Board Keyboard BIOS Updates Coin-Cell Battery Pin Assignments for I/O Connectors Wireless Mini PCI Card Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you m
Back to Contents Page Before You Begin Dell™ XPS M140 Service Manual Preparing to Work Inside the Computer Recommended Tools Computer Orientation Screw Identification Preparing to Work Inside the Computer CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
1 battery 2 battery bay latch release Recommended Tools The procedures in this document will require one or more of the following tools: l Small flat-blade screwdriver l Phillips screwdriver l Small plastic scribe l Flash BIOS update (see the Dell support website at support.dell.com) Computer Orientation 1 front 4 right 2 left 3 back Screw Identification The following chart provides the number of screws used to secure the various system components and their corresponding sizes.
Optical Drive: Modem: Bluetooth Module: (1 each – optional) (1 each) (1 each) Hinge Cover: Display Assembly: Display Bezel (screw): (2 each) (4 each) (6 each) Display Bezel (rubber bumper): Display Panel: Palm Rest (top): (6 each) (6 each) (4 each) Palm Rest (bottom): Fan: Speakers: (11 each) (3 each) (3 total) System Board (top): System Board (bottom): (1 each) (2 each)
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Back to Contents Page BIOS Updates Dell™ XPS M 140 Service Manual Flashing the BIOS Flashing the BIOS NOTICE: Plug the AC adapter into a known-good power source to prevent a loss of power. Failure to do so may cause damage to the computer. 1. Ensure that the AC adapter is plugged in and that the main battery is properly installed. 2. Turn on the computer. NOTE: If you use a BIOS update program CD to flash the BIOS, set up the computer to boot from a CD before inserting the CD. 3.
Back to Contents Page Internal Card With Bluetooth® Wireless Technology Dell™ XPS M140 Service Manual Removing the Bluetooth Module Replacing the Bluetooth Module NOTE: If you ordered the optional internal card with Bluetooth wireless technology at the same time that you ordered your computer, the card is already installed. Removing the Bluetooth Module CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.
1 Bluetooth module 2 M2 x 3-mm screw 4. Lift the Bluetooth module from its compartment. 5. Grasp the card and gently pull it apart from the connector cable. NOTE: Do not disconnect the Bluetooth connector cable from the system board. 1 Bluetooth module 2 Bluetooth module connector 3 Bluetooth connector cable Replacing the Bluetooth Module CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.
5. Replace the M2 x 3-mm screw to secure the Bluetooth module to the base of the computer. 6. Replace the modem/Mini PCI/wireless cover and tighten the screws.
Back to Contents Page Coin-Cell Battery Dell™ XPS M140 Service Manual Removing the Coin-Cell Battery Replacing the Coin-Cell Battery Removing the Coin-Cell Battery CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1.
2. Follow the instructions in Removing the Coin-Cell Battery. 3. Insert the new battery into the circular socket with the positive side up, then push it into place. 4. Replace the keyboard (see Replacing the Keyboard). 5. Replace the hinge cover (see Replacing the Hinge Cover).
Back to Contents Page Microprocessor Module Dell™ XPS M140 Service Manual Removing the Microprocessor Module Replacing the Microprocessor Module Removing the Microprocessor Module CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
1 microprocessor pin-1 corner 3 processor die 5 ZIF-socket cam screw 2 microprocessor module 4 ZIF socket 6 screwdriver NOTICE: When removing the microprocessor module, pull the module straight up and out of the ZIF socket. Exercise care not to bend the pins on the microprocessor module. 5. Lift the microprocessor module straight up and out of the ZIF socket.
6. Replace the microprocessor module cover. 7. Update the BIOS using a flash BIOS update program floppy disk or CD. For instructions on how to flash the BIOS, see BIOS Updates.
Back to Contents Page Display Assembly and Display Latch Dell™ XPS M140 Service Manual Display Assembly Display Bezel Display Panel Display Latch Display Assembly Removing the Display Assembly CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.
1 display assembly 3 antenna cable retaining clips 5 display cable 2 Mini PCI antenna cables 4 antenna cable connectors 6 M2.5 x 5-mm screws (4) Replacing the Display Assembly CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1.
1. Follow the instructions in Preparing to Work Inside the Computer. 2. Remove the hinge cover (see Removing the Hinge Cover). 3. Remove the keyboard (see Removing the Keyboard). 4. Remove display assembly (see Removing the Display Assembly). 5. Use a plastic scribe to remove the six rubber bumpers from around the display assembly. It is not necessary to remove the oval bumpers located on the sides of the display. 6. Remove the six M2.5 x 5-mm screws from around the display assembly.
5. Replace the six rubber bumpers to cover the screws. 6. Replace the display assembly (see Replacing the Display Assembly). 7. Replace the keyboard (see Replacing the Keyboard). 8. Replace the hinge cover (see Replacing the Hinge Cover). Display Panel Removing the Display Panel CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.
1 display panel 2 M2 x 3-mm screws (6) 3 display cover 8. Press inward on the metal clamps on both sides of the top flex-cable connector and gently pull to disconnect the top flex-cable connector from the display locking connector. 9. Use the pull-tab to disconnect the bottom flex-cable connector from the inverter connector.
10. Replace the hinge cover (see Replacing the Hinge Cover). Display Latch Removing the Display Latch CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer. 2.
3. Insert the guide post of the new display latch assembly (with spring) into the slot on the display (top) cover. NOTE: When the guide post is in position, the display latch assembly may automatically snap into place. 4. Press the remainder of the display latch assembly into place, as needed. 5. Replace the display bezel (see Replacing the Display Bezel). 6. Replace display assembly (see Replacing the Display Assembly). 7. Replace the keyboard (see Replacing the Keyboard). 8.
Back to Contents Page Fan Dell™ XPS M140 Service Manual Removing the Fan Replacing the Fan Removing the Fan CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer. 2.
CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer 2. Follow the instructions in Removing the Fan. 3.
Back to Contents Page Hard Drive Dell™ XPS M140 Service Manual Removing the Hard Drive Replacing the Hard Drive Returning a Hard Drive to Dell Removing the Hard Drive CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: Do not touch the metal housing of the hard drive if you remove the hard drive from the computer while the drive is hot.
1 hard drive 2 pull tab Replacing the Hard Drive CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Follow the instructions in Removing the Hard Drive.
1 hard drive (in antistatic bag) Back to Contents Page 2 foam packaging
Back to Contents Page Microprocessor Thermal-Cooling Assembly Dell™ XPS M140 Service Manual Removing the Microprocessor Thermal-Cooling Assembly Replacing the Microprocessor Thermal-Cooling Assembly Removing the Microprocessor Thermal-Cooling Assembly CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Replacing the Microprocessor Thermal-Cooling Assembly CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer 2.
Back to Contents Page Hinge Cover Dell™ XPS M140 Service Manual Removing the Hinge Cover Replacing the Hinge Cover Removing the Hinge Cover CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
Replacing the Hinge Cover CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer. The hinge cover is fragile and can be damaged if extreme force is used.
Back to Contents Page Keyboard Dell™ XPS M140 Service Manual Removing the Keyboard Replacing the Keyboard Removing the Keyboard CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1.
1 keyboard 3 keyboard connector tabs 5 system board connector slots 2 keyboard cable 4 system board connector 6 keyboard tabs (6) Replacing the Keyboard CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1.
Back to Contents Page Wireless Mini PCI Card Dell™ XPS M140 Service Manual Removing the Mini PCI Card Replacing the Mini PCI Card NOTE: If you ordered the optional Mini PCI card at the same time that you ordered your computer, the card is already installed. Removing the Mini PCI Card CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: To prevent damage to the Mini PCI card connector, do not use tools of any kind to spread the metal clips that secure the Mini PCI card. 4. Use your fingertips to carefully spread apart the metal clips securing each end of the Mini PCI card until the card pops up. 1 Mini PCI card 2 metal retention clips (2) 5. Remove the Mini PCI card from the connector at a 45-degree angle.
remove the card and reinstall it. 1 Mini PCI card 4. Connect the antenna cables to the Mini PCI card. Make certain that the cable connectors snap securely into place. 1 antenna cables 5. Replace the modem/Mini PCI/wireless cover and tighten the screws.
Back to Contents Page Optical Drive Dell™ XPS M140 Service Manual About the Device Security Screw Removing the Optical Drive Replacing the Optical Drive About the Device Security Screw NOTE: You do not need to install the device security screw unless you want to prevent the optical drive from being easily removed. Your Dell™ computer ships with a CD/DVD drive installed in the optical drive bay along with an M2.5 x 8-mm device security screw.
1 metal tab 2 optical drive 4. Pull the drive out of the bay. Replacing the Optical Drive CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Follow the instructions in Removing the Optical Drive. 3. Slide the new drive into the bay until it snaps securely into place. 4. Replace the M2.5 x 8-mm device security screw (optional).
Back to Contents Page Palm Rest Dell™ XPS M140 Service Manual Removing the Palm Rest Replacing the Palm Rest Removing the Palm Rest CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1.
1 M2.5 x 8-mm screws (11) 9. Turn the computer over and remove the four M2.5 x 5-mm screws securing the top of the palm rest. NOTICE: Release the locking tabs on both sides of the system board connector before attempting to remove the touch pad or LED cable. Failure to release the locking tabs could result in damage to the cable and/or the cable connector. 10. Disconnect the touch pad cable.
1 palmrest 2 hinge brackets Replacing the Palm Rest CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer 2. Follow the instructions in Removing the Palm Rest. 3.
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Back to Contents Page Pin Assignments for I/O Connectors Dell™ XPS M140 Service Manual USB Connector Video Connector S-Video TV-Out Connector IEEE 1394 Connector USB Connector Pin Signal 1 USB5V+ 2 USBP– 3 USBP+ 4 GND Video Connector Pin Signal Pin Signal 1 CRT_R 9 5V+ 2 CRT_G 10 GND 3 CRT_B 11 MONITOR_DETECT– 4 NC 12 DDC_DATA 5 GND 13 CRT_HS 6 GND 14 CRT_VS 7 GND 15 DDC_CLK 8 GND S-Video TV-Out Connector
S-Video Pin Signal 1 GND 2 GND 3 DLUMA-L 4 DCRMA-L Composite Video Pin Signal 5 NC 6 DCMPS-L 7 GND IEEE 1394 Connector Pin Signal 1 TPB– 2 TPB+ 3 TPA– 4 TPA+ Back to Contents Page
Back to Contents Page Speakers Dell™ XPS M140 Service Manual Removing the Speakers Replacing the Speakers Removing the Speakers CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1.
1 speakers (2) 3 speaker cable 2 M2.5 x 5-mm screws (3) 4 speaker connector 5 guide post slots (4) Replacing the Speakers CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1.
Back to Contents Page System Board Dell™ XPS M140 Service Manual Removing the System Board Replacing the System Board Removing the System Board CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.
1 M2 x 3-mm screws (2) 16. Turn the computer over so that the bottom is facing down and remove the M2.5 x 5-mm screw securing the system board. 17. Disconnect the fan cable from the system board. 18. Disconnect the speaker cable from the system board. 19. Disconnect the modem cable from the system board. 1 M2.5 x 5-mm screw 3 speaker connector 2 system board 4 fan connector 5 modem connector 20.
1 system board Replacing the System Board CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Follow the instructions in Removing the System Board. 3.
Back to Contents Page System Components Dell™ XPS M140 Service Manual NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
Back to Contents Page Dell™ XPS M140 Service Manual 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. © 2005 Dell Inc. All rights reserved.
Back to Contents Page Memory Module and Modem Dell™ XPS M140 Service Manual Removing a Memory Module Replacing a Memory Module Modem Your Dell computer comes equipped with two memory slots/connectors labeled DIMM A and DIMM B. DIMM A (located under the keyboard) holds the primary memory module as configured from the factory. DIMM B (located on the bottom of the computer) holds any additional memory you may have ordered. If you did not order additional memory, DIMM B will be empty.
1 memory module 2 metal retention clips (2) 4. Remove the module from the connector at a 45-degree angle. Memory Module DIMM A 1. Follow the instructions in Preparing to Work Inside the Computer. 2. Remove the hinge cover (see Removing the Hinge Cover). 3. Remove the keyboard (see Removing the Keyboard). 4. Loosen the two captive screws securing the memory module cover, then remove the cover and set it aside.
1 memory module cover 2 captive screws (2) NOTICE: To prevent damage to the memory module connector, do not use tools of any kind to spread the metal clips that secure the module. 5. Use your fingertips to carefully spread apart the metal clips securing each end of the memory module until the module pops up. 1 memory module 2 metal retention clips (2) 6. Remove the memory module from the connector at a 45-degree angle.
the module and reinstall it. 1 memory module NOTICE: If the memory module cover is difficult to close, remove the memory module and reinstall it. Forcing the cover to close may damage your computer. 4. Replace the memory module cover and tighten the screws. 5. Replace the keyboard (see Replacing the Keyboard—DIMM A only). 6. Replace the hinge cover (see Replacing the Hinge Cover—DIMM A only). If You Are Replacing Memory As the computer boots, it detects the installed memory.
1. Follow the instructions in Preparing to Work Inside the Computer. 2. Loosen the two captive screws on the modem/Mini PCI/wireless cover, then remove the cover and set it aside. 1 modem/Mini PCI/wireless cover 2 captive screws (2) 3. Disconnect the antenna cables from the Mini PCI card, if applicable. NOTE: The Mini PCI card is optional and may not be installed if one was not ordered with the computer. 1 Mini PCI antenna cables 4.
1 modem 3 M2 x 3-mm screw 2 modem cable 4 system board connector 5 pull tab Replacing the Modem CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. 1. Follow the instructions in Preparing to Work Inside the Computer. 2.
