Processor | 87Replacing the ProcessorProcedureNOTE: If you install a new processor, a new thermal assembly including an affixedthermal pad or a new thermal pad along with documentation to illustrate properinstallation is shipped.1 Align the pin-1 corner of the processor module with the pin-1 corner of the ZIFsocket, then insert the processor module.NOTE: The pin-1 corner of the processor module has a triangle that aligns with thetriangle on the pin-1 corner of the ZIF socket.When the processor module is properly seated, all four corners are aligned at thesame height. If one or more corners of the module are higher than the others, themodule is not seated properly.CAUTION: To avoid damage to the processor, hold the screwdriver perpendicularto the processor when turning the cam screw.2 Tighten the ZIF socket by turning the cam screw clockwise to secure the processormodule to the system board.Postrequisites1 Replace the heat sink. See "Replacing the Heat Sink" on page 83.2 Follow the instructions from step 3 to step 11 in "Replacing the System Board" onpage 79.3 Replace the fan. See "Replacing the Fan" on page 48.4 Replace the palm rest. See "Replacing the Palm Rest" on page 41.5 Replace the wireless Mini-Card. See "Replacing the Wireless Mini-Card" on page 33.6 Replace the mSATA card. See "Replacing the mSATA Card" on page 37.7 Follow the instructions from step 4 to step 5 in "Replacing the Optical Drive" onpage 29.8 Follow the instructions from step 4 to step 6 in "Replacing the Hard Drive(s)" onpage 26.9 Replace the memory module(s). See "Replacing the Memory Module(s)" on page 22.10 Replace the base cover. See "Replacing the Base Cover" on page 20.11 Replace the keyboard. See "Replacing the Keyboard" on page 18.12 Replace the battery. See "Replacing the Battery" on page 13.13 Follow the instructions in "After Working Inside Your Computer" on page 9.