Lenovo ThinkCentre M90z Hardware Maintenance Manual for ThinkCentre M90z - Page 96
Replacing the multi-touch board, the system board and the multi-touch screen.
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11. Go to "Completing the parts replacement" on page 110. Replacing the multi-touch board 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 multi-touch board. Note: The multi-touch board is available only in some models. To replace the multi-touch board, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer cover. See "Removing the computer cover" on page 71. 4. Locate the multi-touch board in the computer. See "FRU locations" on page 69. 5. Note the multi-touch board cable routing and disconnect the three multi-touch board cables from the system board and the multi-touch screen. 6. Carefully remove the two screws 1 that secure the multi-touch board and then lift the multi-touch board off the computer main bracket. Figure 28. Removing the multi-touch board 7. Align the screw holes in the new multi-touch board with those in the computer main bracket and then install the two screws to secure the multi-touch board. 90 ThinkCentre Hardware Maintenance Manual