Dell Inspiron 1546 (Late 2009) - Manual (Page 19)

8. Lift the processor module from the ZIF socket.
Replacing the Processor Module
1. Follow the procedures in Before You Begin .
2. Align the pin-1 corner of the processor module with the pin-1 corner of the ZIF socket, then place 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 Mini-Card (see Replacing the Mini-Card ).
6. Replace the memory module(s) (see Replacing the Memory Module(s) ).
7. Replace the module cover (see Replacing the Module Cover ).
8. Replace the battery (see Replacing the Battery ).
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CAUTION: When removing the processor module, lift the module straight up. Be careful not to bend the pins on the processor module.
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, hold the screwdriver perpendicular to the processor 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.