Fujitsu A1220 A1220 User's Guide - Page 105

4 Carefully clean the embedded dust filter and the air-cooling duct using a vacuum cleaner attachment (such as an extension wand). Dust filter access cover Embedded dust filter Figure 36. Removing/installing the dust filter access cover 5 Put back the dust filter access cover by inserting the end without latch first (positioning the key inside first), and pushing in the cover until it latches. ALWAYS BE SURE THE DUST FILTER ACCESS COVER IS INSTALLED WHEN RUNNING YOUR SYSTEM. NOT USING THE FILTER COVER 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  (-25ºC) and 140ºF (60ºC). 99 - Caring for your LifeBook Notebook