Sony PCG-FX240K - Manual (Page 25)

Using the Weight Saver
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1 There is a Release lever on the bottom of the weight saver. To remove the
battery pack, slide this lever in the direction of arrow 1, then slide the
RELEASE lever on the bottom of the notebook in the direction of arrow 2.
2 Remove the weight saver, and then pull out the battery pack.
3 Reinsert the weight saver. See “Using the Weight Saver” for more
information.
Using the Weight Saver
The weight saver protects the multipurpose bay when it is empty.
Multipurpose bay release levers
Arrow 1: Weight saver Release lever
Arrow 2: RELEASE lever