Lenovo ThinkCentre E93z, Hardware Maintenance Manual

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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 90.
19. Reinstall the card reader. See “Replacing the card reader” on page 103.
20. Reinstall the GPU fan. See “Replacing the GPU fan” on page 104.
21. Reinstall the battery. See “Replacing the battery” on page 106.
22. Reinstall the memory modules. See “Installing or replacing a memory module” on page 109.
23. Reinstall the heat sink assembly. See “Replacing the heat sink assembly” on page 99.
24. Reinstall the VESA mount bracket. See “Removing and reinstalling the VESA mount bracket” on page 88.
25. Reinstall the microprocessor. See “Replacing the microprocessor” on page 100.
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 86.
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.
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ThinkCentre E93z Hardware Maintenance Manual