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9. Attach the cover 1 , pivot it downwards, and then tighten the screws 2 .
10. Reinstall the battery. For more information about how to reinstall the battery, refer to “Replacing the
battery” on page 77
.
11. Turn the computer over again. Connect the ac power adapter and the cables to the computer.
Replacing the optical drive
ThinkPad Edge E420
Before you start, print these instructions.
An optical drive is preinstalled in the bay. If it needs to be repaired, remove it as follows:
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait for
a few minutes, till the inside of the computer cools, before you start the following procedures.
2. Remove the battery.
3. Close the computer display, and turn the computer over.
4. Loosen the screws 1 , and then remove the cover 2 .
82 User Guide