Lenovo ThinkCentre A70 7099 Hardware Maintenance Manual page 130

3. Remove the front bezel by releasing the three plastic tabs on the top and
Figure 40. Removing the front bezel
4. To reinstall the front bezel, align the other three plastic tabs on the bottom of
Figure 41. Reinstalling the front bezel
5. Go to "Completing the parts replacement" on page 157.
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Hardware Maintenance Manual
pivoting the front bezel forward. Carefully lay the front bezel to the side
without disconnecting the power switch and light-emitting diode (LED)
assembly cable.
the front bezel with the corresponding holes in the chassis. Then, pivot the
front bezel inward until it snaps into position.