Lenovo ThinkCentre M60e Hardware Maintenance Manual for ThinkCentre M60e - Page 100

minutes to let the computer cool before opening the computer cover.

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CAUTION: 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" on page 78. 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" on page 94. 5. Remove all memory modules and PCI cards that are currently installed. See "Installing or replacing a memory module" on page 83 and "Installing or replacing a PCI card" on page 81. 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" on page 76. 7. Remove the heat sink and fan assembly from the failing system board. See "Replacing the heat sink and fan assembly" on page 88. 8. Remove the eight screws that secure the system board. Figure 27. Removing the eight screws that secure the system board 9. Carefully slide the system board so that it can be released from the mounting studs that secure the system board in place. 10. Lift the system board out of the chassis. 11. Remove the microprocessor from the failing system board and install it on the new system board. See "Replacing the microprocessor" on page 91. 96 ThinkCentre Hardware Maintenance Manual

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CAUTION:
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” on page 78.
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” on page 94.
5. Remove all memory modules and PCI cards that are currently installed. See “Installing or replacing a
memory module” on page 83 and “Installing or replacing a PCI card” on page 81.
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” on page 76.
7. Remove the heat sink and fan assembly from the failing system board. See “Replacing the heat sink and
fan assembly” on page 88.
8. Remove the eight screws that secure the system board.
Figure 27. Removing the eight screws that secure the system board
9. Carefully slide the system board so that it can be released from the mounting studs that secure the
system board in place.
10. Lift the system board out of the chassis.
11. Remove the microprocessor from the failing system board and install it on the new system board.
See “Replacing the microprocessor” on page 91.
96
ThinkCentre Hardware Maintenance Manual