Dell Latitude D620 - Manual (Page 11)

Installing the Processor Module
1. Align the pin-1 corner of the processor module so that it points to the triangle on the system board, and insert the processor module into the ZIF socket.
When the processor module is correctly seated, all four corners are aligned at the same height. If one or more corners of the module are higher than the
others, the module is not seated correctly.
2. Tighten the ZIF socket by turning the cam screw clockwise to secure the processor module to the system board.
3. Peel the backing off the thermal cooling pad and adhere the pad to the portion of the thermal-cooling assembly that covers the processor.
4. Replace the processor thermal-cooling assembly (see Processor Thermal-Cooling Assembly ).
5. Replace the palm rest (see Palm Rest ).
6. Replace the coin-cell battery (see Coin-Cell Battery ).
7. Replace the keyboard (see Keyboard ).
8. Replace the optical drive (see Media Bay Devices ).
9. Replace the hinge cover (see Hinge Cover ).
10. Replace the battery.
11. Update the BIOS using a flash BIOS-update program CD. See Flashing the BIOS From a CD .
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NOTICE: Ensure that the cam lock is in the fully open position before seating the processor module. Seating the processor module properly in the ZIF
socket does not require force.
NOTICE: A processor module that is not properly seated can result in an intermittent connection or permanent damage to the processor and ZIF
socket.
NOTICE: Hold the processor down while turning the cam screw to prevent intermittent contact between the cam screw and processor.