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Replacing the system board - ThinkCentre M81 (type 0268, 1730, 4166, 4169, 5030, 5048, 5069, 7517)

Attention

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

This section provides instructions on how to replace the system board.

CAUTION:

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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 opening the computer cover.

To replace the system board, 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. Lay the computer on its side for easier access to the system board.
  4. Remove the hard disk drive from the chassis. See "Replacing the primary hard disk drive".Remove the secondary hard disk drive if your model has one. See "Replacing the secondary hard disk drive".
  5. Remove all memory modules and PCI cards that are currently installed. See "Installing or replacing a memory module" and "Installing or replacing a PCI card".
  6. Carefully take note of the locations of all cable connections on the system board and disconnect all the cables. See "Locating parts on the system board".
  7. Remove the heat sink and fan assembly from the failing system board. See "Replacing the heat sink and fan assembly".
  8. Remove the eight screws that secure the system board.

Removing the eight screws that secure the system board

Figure 1. Removing the eight screws that secure the system board

  1. Carefully slide the system board so that it can be released from the mounting studs that secure the system board in place.
  2. Lift the system board out of the chassis.
  3. Remove the microprocessor from the failing system board and install it on the new system board. See "Replacing the microprocessor".
  4. Install the new system board into the chassis by aligning the eight mounting studs in the chassis with the corresponding holes in the new system board. Carefully slide the new system board into the chassis until it is secured in place by the mounting studs. Then, install the eight screws to secure the system board.
  5. Install the heat sink and fan assembly and connect the heat sink and fan assembly cable to the new system board. See "Replacing the heat sink and fan assembly".
  6. Install all memory modules and PCI cards removed from the failing system board on the new system board. See "Installing or replacing a memory module". and "Installing or replacing a PCI card".
  7. Reconnect all remaining cables to the system board. See "Locating parts on the system board".
  8. Install the hard disk drive. See "Replacing the primary hard disk drive" and See "Replacing the secondary hard disk drive".
  9. To complete the replacement, go to "Completing the parts replacement"

The failing system board must be returned with a microprocessor socket cover to protect the pins during shipping and handling.

To install the microprocessor socket cover, do the following:

  1. Release the lever securing the microprocessor retainer and open the retainer to access the microprocessor.
  2. Grasp the microprocessor on the sides and lift it straight up and out of the socket. Do not touch the contacts on the microprocessor socket.
  3. Note the orientation of the socket cover. Align the notches 1 of the microprocessor socket cover with the alignment keys 2 of the microprocessor socket.
  4. Install one side of the socket cover into the microprocessor socket as shown.

Installing the socket cover

Figure 1. Installing the socket cover

Note: Your microprocessor socket and cover might look slightly different from the illustration.

  1. Carefully press the other side of the socket cover downwards until the socket cover snaps into place

Securing the socket cover

Figure2. Securing the socket cover

  1. Carefully check the four corners of the socket cover to make sure that the cover is secured in the microprocessor socket.
  2. Lower the microprocessor retainer and then lower the lever to secure the retainer. Make sure the lever is locked into position.
  3. Follow any additional instructions included with the replacement part you received.
Purchase parts online


If you are unable to find what you are looking for, please do try the following options:
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Country Availability
AvailableWorldwide
Document ID : PD011017
Legacy Document ID : MIGR-77364
Last Updated :
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