Dell Latitude C840 Service Manual

Also see for Latitude C840: System information guide Service manual System information guide User guide System information guide

Back to Contents PageSystem BoardDell™ Latitude™ C840 Service ManualThe BIOS chip on the system board contains the service tag sequence, which is also visible on a bar code label on the bottom of the computer.The replacement kit for the system board includes a floppy disk or CD that provides a utility for transferring the service tag sequence to the replacementsystem board.Removing the System Board1. Follow the instructions in "Preparing to Work Inside the Computer."2. Remove the hard drive and the fixed optical drive.3. Remove any installed Mini PCI Cards.4. If migrating the memory, remove all installed memory modules.5. Remove (if migrating) or disconnect the modem daughter card.6. Remove the keyboard.7. Remove the hinge cover.8. Remove the display assembly.9. Remove the palm rest.10. Remove the video graphics board.11. Remove the microprocessor thermal-cooling assembly.12. If migrating the microprocessor, remove the microprocessor module.NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries.NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer.1 M2.5 x 4-mm captive-washer screws (3)2 system board3 network connector4 modem connector5 network cable cover6 M2.5 x 20-mm screwNOTICE: If you received a flash BIOS update floppy disk or CD with the replacement microprocessor, you must update the BIOS after replacing themicroprocessor module.