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Replacing the heat sink and fan assembly - ThinkStation C20 (type 4262, 4263, 4264, 4265), C20x (type 4266, 4269, 4271, 4272)

Attention

Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkStation Safety and Warranty Guide, go to:http://www.lenovo.com/support

CAUTION:
warning
The heat sink and fan assembly might be very hot. Turn off the computer and wait three to five minutes to let the computer cool before removing the computer cover.

This section provides instructions on how to replace the heat sink and fan assembly.

To replace the heat sink and fan assembly, 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. Remove the computer cover. See "Removing the computer cover".
  3. Remove the PCI card holder. See "Removing and reinstalling the PCI card holder".
  4. Your computer supports two heat sink and fan assemblies. Locate the heat sink and fan assembly you want to replace. See "Locating components".
  5. Depending on the heat sink and fan assembly you want to replace, do one of the following:
    a. If you are replacing heat sink and fan assembly 1, go to 6.
    b. If you are replacing heat sink and fan assembly 2, do the following:
    i. Remove the optical drive. See "Replacing the optical drive".
    ii.Pivot the optical drive bracket as shown in the following illustration and then remove it from the chassis. Go to 6.

Removing the optical drive bracket

Figure 1. Removing the optical drive bracket

  1. Disconnect the heat sink and fan assembly cable from the system board. Note the cable location.
  2. Follow this sequence to remove the four screws that secure the heat sink and fan assembly to the system board:
    a. Partially remove screw (1), then fully remove screw (2), and then fully remove screw (1).
    b. Partially remove screw (3), then fully remove screw (4), and then fully remove screw (3).

    Note: Carefully remove the four screws from the system board to avoid any possible damage to the system board. The four screws cannot be removed from the heat sink and fan assembly.

Removing the heat sink and fan assembly

Figure 2. Removing the heat sink and fan assembly

  1. Carefully lift the heat sink and fan assembly off the system board.
    Notes:
    a. You might have to gently twist the heat sink and fan assembly to free it from the microprocessor.
    b. Do not touch the thermal grease while handling the heat sink and fan assembly.
  2. Remove the plastic cover from the bottom of the new heat sink and fan assembly to expose the thermal grease (this cover protects the thermal grease from contamination).
    Notes:
    a. Do not remove the plastic cover until you are ready to install the heat sink and fan assembly on the microprocessor.
    b. Do not touch the thermal grease on the heat sink and fan assembly.
    c. Do not put the heat sink and fan assembly anywhere except on the microprocessor after the plastic cover has been removed and the thermal grease exposed.
  3. Position the new heat sink and fan assembly on the microprocessor so that the four screws are aligned with the holes in the system board.
    Note: Position the new heat sink and fan assembly so that the heat sink and fan assembly cable is toward the microprocessor fan connector on the system board.
  4. Follow this sequence to install the four screws to secure the new heat sink and fan assembly:
    a. Partially tighten screw (1), then fully tighten screw (2), and then fully tighten screw (1).
    b. Partially tighten screw (3), then fully tighten screw (4), and then fully tighten screw (3).
  5. Connect the heat sink and fan assembly cable to the system board. See "Locating parts and connectors on the system board".
  6. If you are replacing heat sink and fan assembly 2, reinstall the optical drive bracket into the chassis.
  7. Reinstall the optical drive into the chassis. See "Replacing the optical drive".
  8. Reinstall the PCI card holder. See "Removing and reinstalling the PCI card holder".
  9. To complete the installation or replacement, go to "Completing the parts replacement".
Purchase parts online

  • Alias ID: MIGR-75664
  • Document ID: PD009930
  • Last Updated :17/06/2014
  • (c) 2014 Lenovo