Preliminary Steps

Before you begin, do the following:

  • Position the computer in the service stand.
  • Remove the user access plate.
  • Remove the bottom housing.
  • Remove the drive carrier assembly.
  • Remove the power supply.
  • Remove the fan.
  • Remove the plastic cable retainer.

1. The neck cables are highlighted below. Note the cable routing, including the blind mate connector orientation before removing the cap screws and neck cap. Note: View the document at a larger size to enlarge the next two graphics.

2. Loosen the three silver screws (circled below) to remove the neck cap. Lift the cap off the spokes. Note: The two black screws keep the neck attached to the base.

Warning: Whenever the bottom housing is opened for service, you must do two things:

  1. You must clean the original thermal film from the surfaces joining the thermal interface layer and reapply thermal paste to the thermal pipe.
  2. You must tighten the four torx screws on the bottom housing to a minimum of 17 in.-lbs. If you do not have a torque driver, you will have to make sure these screws are tightened by hand FIRMLY, BUT NOT FORCIBLY. Or, purchase the service tool (076-0899) in order to ensure the thermal pipe is firmly mated with the top base. If the bottom housing is not securely attached to the base in this fashion, the CPU may overheat and become damaged. Failure to follow either of these steps could cause the computer to overheat and damage internal components.

Refer to the topic, "Thermal Paste Application" for detailed information.

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