Lenovo ThinkCentre M70e Hardware Maintenance Manual (HMM) for ThinkCentre M70e - Page 95

18. Reinstall the computer cover. 19. Go to "Completing the parts replacement" on page 94. 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: 1. Make sure that the microprocessor has been removed from the microprocessor socket. See "Replacing the microprocessor" on page 83. 2. Close the microprocessor retainer and lock it into position with the small handle. 3. 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. Figure 23. Tabs on the microprocessor socket cover (bottom view) Figure 24. Installing the microprocessor socket cover 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 This section provides instructions on how to replace the optical drive. Chapter 8. Replacing FRUs (Machine Types: 0806, 0810, 0821, 0823, 0827, 0829,0832, 0835, 0842, 0844, 0846, 0848, 0851, and 4089.) 87