Lenovo 10KY Hardware Maintenance Manual

5. Position the new memory module over the appropriate memory slot. Ensure that the notch 1 on thememory module aligns correctly with the slot key 2 on the system board. Push the memory modulestraight down into the slot until the retaining clips close.Figure35. Installing a memory moduleWhat to do next:• To work with another piece of hardware, go to the appropriate section.• To complete the installation or replacement, go to “Completing the parts replacement” on page 110.Replacing the heat sink and fan assemblyAttention: Do not open your computer or attempt any repair before reading and understanding the Chapter1 “Read this first: Important safety information” on page 1.CAUTION:The heat sink and fan assembly might be very hot. Before you open the computer cover, turn off thecomputer and wait several minutes until the computer is cool.To replace the heat sink and fan assembly, do the following:1. Remove any media from the drives and turn off all connected devices and the computer. Then,disconnect all power cords from electrical outlets and disconnect all cables that are connected to thecomputer.2. Remove the computer cover. See “Removing the computer cover” on page 82.3. Locate the heat sink and fan assembly. See “Computer components” on page 31.4. Disconnect the heat sink and fan assembly cable from the microprocessor fan connector on the systemboard.Chapter 9. Installing or replacing hardware 99