Dell LATITUDE E6400 XFR Service Manual page 23

1. Align the pin-1 corner of the processor with the pin-1 corner of the ZIF socket, and then insert the processor.
NOTE: The pin-1 corner of the processor has a triangle that aligns with the triangle on
the pin-1 corner of the ZIF socket, then insert the processor.
When the processor is properly seated, all four corners are aligned at the same height. If one or more corners
of the processor are higher than the others, the processor is not seated properly.
NOTICE:
perpendicular to the processor when turning the cam screw.
2. Tighten the ZIF socket by turning the cam screw clockwise to secure the processor to the system board.
3. Clean the heatsink. Use the cleaning pad provided with the processor kit to remove any old thermal grease
between the 4 captive screws.
4. Apply the thermal grease. Follow the instructions provided with the processor kit, use the syringe to apply
thermal grease in a spiral pattern to the processor thermal-cooling assembly.
5. Replace the processor heatsink assembly (see Replacing the Processor Heatsink Assembly).
6. Follow the procedures in After Working on Your Computer.
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Dell Latitude™ E6420 XFR Service Manual
1 ZIF socket
3 ZIF-socket cam screw
To avoid damage to the processor, hold the screwdriver so that it is
2 Pin-1 corner