Lenovo ThinkCentre 7515 Maintenance Manual page 154

Figure 60. Tabs on the microprocessor socket cover (bottom view)
Figure 61. Installing the microprocessor socket cover
12. Install the new system board into the chassis by aligning the four mounting
13. Install the heat sink and fan assembly retainer by aligning the four screw
14. Install the heat sink and fan assembly on the new system board. See
15. Install all memory modules and adapter cards removed from the failing
16. Reinstall the hard disk drive. See "Replacing the hard disk drive" on page
17. Reconnect the power and signal cables to the hard disk drive.
18. Reconnect all remaining cables to the new system board. See "Locating parts
19. Go to "Completing the FRU replacement" on page 155.
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Hardware Maintenance Manual
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.
studs in the chassis with the corresponding holes on the new system board,
and then carefully slide the new system board in to the chassis until it is
secured in place by the four mounting studs.
holes on the retainer with the corresponding holes on the new system board,
and then tighten the screws to secure the retainer on the new system board.
"Replacing the heat sink and fan assembly" on page 142. And connect the
heat sink and fan assembly cable to the new system board. See "Locating
parts on the system board" on page 129.
system board on the new system board.
136.
on the system board" on page 129.