Dell Inspiron 11z (1120, Mid 2010) - Manual (Page 17)

7. Lift the processor module from the ZIF socket.
Replacing the Processor Module
1. Follow the instructions in Before You Begin .
2. Align the pin-1 corner of the processor module with the pin-1 corner of the ZIF socket, then insert the processor module.
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.
3. Tighten the ZIF socket by turning the cam screw clockwise to secure the processor module to the system board.
4. Replace the processor heat sink (see Replacing the Processor Heat Sink ).
5. Replace the palm rest (see Replacing the Palm Rest ).
6. Replace the keyboard (see Replacing the Keyboard ).
7. Replace the battery (see Replacing the Battery ).
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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.
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.
CAUTION: To avoid damage to the processor module, hold the screwdriver perpendicular to the processor module when turning the cam screw.
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.