Lenovo ThinkCentre M75e, Руководство по техническому обслуживанию аппаратной части

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Figure 23. Removing the eight screws that secure the system board
10. Carefully slide the system board so that it can be released from the mounting studs that secure the
system board in place.
11. Lift the system board out of the chassis.
12. Remove the microprocessor from the failing system board and install it on the new system board.
See “Replacing the microprocessor” on page 88.
13. 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.
14. 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” on page 81 and “Installing or replacing a PCI
card” on page 79.
15. 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” on page 86.
16. Reconnect all remaining cables to the system board. See “Locating parts on the system board”
on page 73.
17. To complete the replacement, go to “Completing the parts replacement” on page 98.
Note: If required, return the failing system board to Lenovo.
Replacing the optical drive
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
Chapter 8
.
Replacing FRUs (Machine Types: 4162, 5041, 5044, 5051, 5053, 5055, 5057, 5059, 5061, 5063, and 5065.)
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