Rotate the owner hinges forward at an angle of approximately 90 degrees to the front of the display assembly.
Intel Speedstep is a trademark of Intel Corporation; Microsoft, Windows, Windows NT, and MS-DOS are registered trademarks.
Do not use your computer owner during an electrical storm unless all cables manual have been disconnected and the computer is operating on battery power.Do not touch the components or contacts on a card.File f /m (4 of 8) 2/28/2004 7:57:48 AM 18 Memory Modules, Mini PCI Card, and Modem: dell Dell Latitude C540/C640 Service Manual notice: Read "Preparing to Work Inside the Computer" owner before performing the following procedure.Install the microprocessor module on the replacement system board.To avoid possible damage to the system board, wait 10 to 20 seconds and then disconnect any attached devices.Model PP01L m m, summary of the content on the page.Do not remove the hard drive while the computer is running, in standby mode, or in hibernate mode.Close the display and turn the computer upside down on a flat work manual surface.Replacing the Microprocessor Thermal Cooling Assembly file f /m (2 of 3) 2/28/2004 7:57:52 AM 46 Microprocessor Thermal Cooling Assembly: Dell Latitude C540/C640 Service Manual notice: To ensure proper thermal operation, always install a new, compatible thermal cooling assembly along with a new microprocessor.To ensure proper seating of the microprocessor in the socket, press down near the edges of the microprocessor module (on the substrate surrounding the die) while turning the cam screw.Notice: Handle the speaker assemblies and speakers carefully to avoid damaging the speaker cones.Remove the M3 manual x 5-mm screw from the hard drive door.Remove owner the two M2 x 4-mm screws on the left side of the display panel and the two M2 x 4-mm screws on the right side of the display panel. Pull straight up on rhonda the file attached pull-tab to lift the modem out of its connector on the system board and disconnect the modem cable.
(1 of 2) 2/28/2004 7:57:46 AM System Components: Dell Latitude C540/C640 Service Manual 1 display assembly vice 10bottom case 2 center control cover 11memory module cover 3 microprocessor thermal cooling assembly 12 module bay device 4 hybrid cooling fan 13main battery 5 microprocessor 14hard drive.
Disconnect all other external cables from the computer.
Remove the M2 x 4-mm screw that secures the display-feed flex cable through the black plastic flex-cable retention bracket.
Insert a dell small, flat-blade screwdriver or plastic scribe into the notch at the right end of the center control cover and pry up the cover.Summary of the content on the page.Notice: To prevent data loss, turn off your computer before removing the hard drive.File f unreal /m (7 of 8) 2/28/2004 7:57:48 AM 21 Memory Modules, Mini PCI Card, and Modem: Dell Latitude C540/C640 Service Manual.To loosen the ZIF socket, use a small, flat-blade screwdriver and rotate owner the ZIFsocket cam screw counter-clockwise until it pack reaches the cam stop.Caution: Only a certified service technician should perform applications repairs on your computer.Dell Latitude C540/C640 Series System Information Guide m m, summary of the content on the page.Replace the M3 x 5-mm screw in the hard drive door.For instructions on how to flash the bios, see "Flashing the bios." Back to Contents Page file f /m (4 of 4) 2/28/2004 7:57:53 AM 51 Hybrid Cooling Fan: Dell Latitude C540/C640 Service Manual Back to Contents Page Hybrid Cooling Fan Dell Latitude C540/C640 Service.Ensure that the work surface is clean to prevent scratching the computer cover.Route the fan power cable under the spring fingers and behind the keyboard screw hole to prevent damage to the fan power cable.File f /m (2 of 4) 2/28/2004 7:57:53 AM 49 Microprocessor Module: Dell Latitude C540/C640 Service Manual.Remove the microprocessor module.Advertising advertising, thank you for your participation!