Dell Inspiron N5110 Service Manual page 40

NOTE: If a new processor is installed, you will receive a new thermal-cooling assembly, which will include an affixed thermal pad, or you will receive a
new thermal pad along with documentation to illustrate proper installation.
2. Align the pin-1 corner of the processor module with the pin-1 corner of the ZIF socket, then insert the processor module.
NOTE: The pin-1 corner of the processor module has a triangle that aligns with the triangle on the pin-1 corner of the ZIF socket.
When the processor module is properly 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 properly.
CAUTION: To avoid damage to the processor, hold the screwdriver perpendicular to the processor when turning the cam screw.
3. Tighten the ZIF socket by turning the cam screw clockwise to secure the processor module to the system board.
4. Follow the instructions from
CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may
result in damage to the computer.
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step 3 to step 15 in Replacing the System Board.