Lenovo ThinkCentre E93z Hardware Maintenance Manual page 117

17. Install the six screws to secure the new system board in place.
Figure 57. Installing the six screws that secure the system board to the main bracket
18. Reinstall the rear I/O assembly. See "Replacing the rear I/O assembly" on page 89.
19. Reinstall the card reader. See "Replacing the card reader" on page 101.
20. Reinstall the GPU fan. See "Replacing the GPU fan" on page 103.
21. Reinstall the battery. See "Replacing the battery" on page 104.
22. Reinstall the memory modules. See "Installing or replacing a memory module" on page 107.
23. Reinstall the heat sink assembly. See "Replacing the heat sink assembly" on page 98.
24. Reinstall the VESA mount bracket. See "Removing and reinstalling the VESA mount bracket" on page 87.
25. Reinstall the microprocessor. See "Replacing the microprocessor" on page 99.
26. Reconnect all cables that were disconnected from the system board. See "Locating parts on the
system board" on page 73.
27. Reinstall the system board shield. See "Removing and reinstalling the system board shield" on page 85.
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. After you have removed the microprocessor from the failing system board, close the microprocessor
retainer and then put the lever to the locked position to secure the retainer in place.
.
Chapter 9 Replacing FRUs
113