![](/images/new-backgrounds/1185869/185869255x1.webp)
Figure 39. Removing/installing the dust filter
5Put back the dust filter by inserting the end without latch first and pushing in the filter until it latches.
ALWAYS BE SURE THE DUST FILTER IS INSTALLED WHEN RUNNING YOUR SYSTEM. NOT USING THE FILTER COULD CAUSE CONTAMINATION AND POSSIBLE DAMAGE TO THE SYSTEM.
Storing your LifeBook notebook
•If storing your notebook for a month or longer, turn your LifeBook notebook off, fully charge the battery, then remove and store all Lithium ion batteries.
•Store your notebook and batteries separately. If you store your LifeBook with a battery installed, the battery will discharge, and battery life will be reduced. In addition, a faulty battery might damage your LifeBook.
•Store your Fujitsu LifeBook in a cool, dry location. Temperatures should remain between 13ºF