Lenovo J100 Hardware Maintenance Manual page 89

4. Remove the two thumb screws at the rear of the left-side cover and slide the
cover to the rear to remove.
5. If necessary, remove the right-side cover in the same manner.
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Chapter 8. Replacing FRUs (Types 8252, 8253, 8254, 8255, 8256, 8257, 8258, and 8259)