Dell Latitude C540 Service Manual

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Dell Latitude C540 Service Manual Manual pdf 48 page image

Microprocessor Module: Dell Latitude C540/C640 Service Manual4. To loosen the ZIF socket, use a small, flat-blade screwdriver and rotate the ZIF-socket camscrew counter-clockwise until it reaches the cam stop.The ZIF-socket cam screw secures the microprocessor to the system board. Take note of thearrow on the ZIF-socket cam screw.5. Use a microprocessor extraction tool to remove the microprocessor module.Replacing the Microprocessor ModuleNOTICE: Ensure that the cam lock is in the fully open position before seating themicroprocessor module. Seating the microprocessor module properly in the ZIF socket does notrequire force.NOTICE: A microprocessor module that is not properly seated can result in an intermittentconnection, or permanent damage to the microprocessor and ZIF socket.1. Align the pin-1 corner of the microprocessor module with the pin-1 corner of the ZIF socket,and insert the microprocessor module.NOTE: The pin-1 corner of the microprocessor module has a triangle that aligns with a triangle(or missing hole) on the pin-1 corner of the ZIF socket.NOTICE: You must position the microprocessor module correctly in the ZIF socket to avoidpermanent damage to the module and the socket.When the microprocessor module is correctly seated, all four corners are aligned at the sameheight. If one or more corners of the module are higher than the others, the module is not seatedcorrectly.NOTICE: Do not touch the processor dienear the edges of the microprocessor module (on thesubstrate surrounding the die) while turning the cam screw.2. Press down on the edges of the microprocessor module and tighten the ZIF socket by turningthe cam screw clockwise.3. Install a new microprocessor thermal cooling assembly.NOTICE: To ensure proper thermal operation, always install a new, compatible thermal coolingassembly along with a new microprocessor.4. Update the BIOS using the flash BIOS update floppy disk or CD. For instructions on how to flashthe BIOS, see "Flashing the BIOS."file:///I|/SERVICE%20MANUALS/DELL%20MANUALS/...40%20C640/C540%20C640_SERVICE_MANUAL/cpu.htm (3 of 4)6/21/2004 1:27:16 AM