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Microprocessor installation - ThinkCentre A50, S50

Attention: Read "Safety information to be familiar with before servicing your computer" before opening the cover.

  1. Make sure that the handle used to remove the microprocessor is fully in the up position. Otherwise the microprocessor pins might be damaged when installing the microprocessor.
  2. Position the microprocessor so that the pins are aligned with the socket and with the beveled corner in the orientation.
  3. Lower the handle until it is fully in the down position. This locks the microprocessor in place.

    Note: The cleaning pad and thermal grease are separate FRUs and are not included with the system board or microprocessor FRUs. These must be ordered separately and shipped along with the FRUs being replaced.

  4. Remove the cleaning pad from its package that came with the CRU and use the cleaning pad to wipe the thermal grease from the bottom of the heat sink.

    Note: Be sure that all of the thermal grease is removed.

  5. If you are replacing the same microprocessor that was removed, use a clean area of the cleaning pad to wipe the thermal grease from the microprocessor; then, dispose of the cleaning pad.
  6. Use the thermal grease syringe to place 16 uniformly spaced dots of 0.01ML each on the top of the microprocessor.

use thermal grease

Note: 0.01ML is one tick mark on the syringe. If the grease is properly applied, approximately half (0.22ML) of the grease will remain in the syringe.

  1. Place the heat sink into position on the microprocessor.
  2. When tightening the screws that clamp the heat sink, do not overtighten. Tighten the clamp screws evenly by tightening one side some and then the other until they are both snug.
  3. Install the plastic cover over the heat sink.
  4. Continue to Step 21 in "System board, microprocessor, and heat sink installation".
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Document ID : PD008730
Legacy Document ID : MIGR-51036
Last Updated :
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