Lenovo 3298, 3281, 3280, 3297, 3305, 3296, 3292, 3291, 3294, 3293, 3311, 3314 Replacing the microprocessor

Models: 3324 3342 3314F2U 3293 3280 3318E8U 3318 3292 3315 3309 3291 3329 3341 3281 3322 3327 3296 3305 3325 3312 3320 3316 3326 3313 3298 3297 3311 M92z 3314 3294

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What to do next:

To work with another piece of hardware, go to the appropriate section.

To complete the installation or replacement, go to “Completing the parts replacement” on page 73.

Replacing the microprocessor

Attention:

Do not open your computer or attempt any repair before reading and understanding “Important safety information” on page v.

This section provides instructions on how to replace the microprocessor.

CAUTION:

The heat sink and microprocessor might be very hot. Turn off the computer and wait three to five minutes to let the computer cool before removing the computer cover.

To replace the microprocessor, do the following:

1.Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2.Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up.

3.Remove the computer cover. See “Removing the computer cover” on page 41.

4.Locate the system board and disconnect all cables connected to the system board. See “Locating parts on the system board” on page 16.

5.Remove the heat sink to gain access to the microprocessor. See “Replacing the heat sink” on page 51.

Note: Place the heat sink on its side so that the thermal grease on the bottom of it does not get in contact with anything.

Chapter 5. Installing or replacing hardware 53

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Lenovo 3298, 3281, 3280, 3297, 3305, 3296, 3292, 3291, 3294, 3293, 3311, 3314, 3309, 3312, 3313, 3341, 3342 Replacing the microprocessor