Lenovo ThinkCentre M57e Hardware Maintenance Manual - Page 85

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

Page 85 highlights

4. You might have to remove the drive bay assembly to access the system board. See "Accessing system board components and drives" on page 72. 5. Take note of the location of all cable connections on the system board and disconnect all cables. See the system board illustration for your machine type at "System board connectors" on page 70. 6. Remove the hard disk drive. See "Replacing the hard disk drive" on page 82. 7. Remove the screws that secure the system board to the chassis. 8. Lift the system board out of the chassis. 9. Remove the memory modules from the failing system board and install them in the same location on the new system board. 10. Disconnect the heat sink and fan assembly cable from the system board. See the system board illustration for your machine type at "System board connectors" on page 70. 11. Remove the four screws 1 securing the heat sink and fan assembly to the system board. 12. Lift the heat sink and fan assembly off the failing system board. Place the heat sink on its side so that the thermal grease does not come in contact with anything. Note: You might have to gently twist the heat sink to free it from the microprocessor. 13. Remove the microprocessor from the failing system board. See "Replacing the microprocessor" on page 79. 14. Remove the microprocessor socket cover from the new system board. 15. The failing system board must be returned with a microprocessor socket cover to protect the pins during shipping and handling. Install the microprocessor socket cover removed from the new system board on the failing system board. To install the microprocessor socket cover: a. Make sure the microprocessor has been removed from the microprocessor socket, and then close the microprocessor retainer and lock it into position with the small handle. b. Insert the tabs 1 of the socket cover into the hinged side of the socket, and then press the other side of the socket cover downward until the tabs 2 snap into position. Chapter 8. Replacing FRUs (Types 7065, 7096, 9351, 9358, 9438, 9481, 9489, 9703, 9784, 9788, 9792, 9853, 9949) 77

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4.
You might have to remove the drive bay assembly to access the system board. See “Accessing system
board components and drives” on page 72.
5.
Take note of the location of all cable connections on the system board and disconnect all cables. See the
system board illustration for your machine type at “System board connectors” on page 70.
6.
Remove the hard disk drive. See “Replacing the hard disk drive” on page 82.
7.
Remove the screws that secure the system board to the chassis.
8.
Lift the system board out of the chassis.
9.
Remove the memory modules from the failing system board and install them in the same location on
the new system board.
10.Disconnect the heat sink and fan assembly cable from the system board. See the system board
illustration for your machine type at “System board connectors” on page 70.
11. Remove the four screws
1
securing the heat sink and fan assembly to the system board.
12.Lift the heat sink and fan assembly off the failing system board. Place the heat sink on its side so that the
thermal grease does not come in contact with anything.
Note:
You might have to gently twist the heat sink to free it from the microprocessor.
13.Remove the microprocessor from the failing system board. See “Replacing the microprocessor” on
page 79.
14.Remove the microprocessor socket cover from the new system board.
15.The failing system board must be returned with a microprocessor socket cover to protect the pins during
shipping and handling. Install the microprocessor socket cover removed from the new system board on
the failing system board. To install the microprocessor socket cover:
a.
Make sure the microprocessor has been removed from the microprocessor socket, and then close the
microprocessor retainer and lock it into position with the small handle.
b. Insert the tabs
1
of the socket cover into the hinged side of the socket, and then press the other side
of the socket cover downward until the tabs
2
snap into position.
Chapter 8
.
Replacing FRUs (Types 7065, 7096, 9351, 9358, 9438, 9481, 9489, 9703, 9784, 9788, 9792, 9853, 9949)
77