Lenovo 90RJ, User Manual

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7. Install the optical drive and reconnect the cables.
8. Reinstall all the removed parts.
9. Reconnect the power cord and all disconnected cables to the computer.
Note: If a locking device is available, use it to lock the computer.
Heat sink assembly
Prerequisite
Before you start, read Generic Safety and Compliance Notices , and print the following instructions.
Before you open the computer cover, turn off the computer and wait several minutes until the computer is
cool.
Replacement procedure
1. Turn off the computer and remove all connected devices and cables.
2. Remove the computer cover. See “Computer cover” on page 15.
3. Remove the front bezel. See “Front bezel” on page 16.
4. Remove the storage drive bracket. See “Storage drive bracket” on page 20.
5. Remove the screws. Then, remove the heat sink.
Chapter 4
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CRU replacement
29