User manual TNB DARK LIGHT RCDL01

[. . . ] Using the ac power adapter and the battery pack Checking the battery status . Replacing the PCI Express Mini Card for wireless LAN connection . Problems with drives and other storage devices . 69 ii User Guide Read this first Be sure to follow the important tips given here to continue to get the most use and enjoyment out of your computer. [. . . ] To replace the battery with a new one, read the following prerequisites. © Copyright Lenovo 2012 31 Prerequisites for the procedure DANGER If the rechargeable battery pack is incorrectly replaced, there is danger of an explosion. The battery pack contains a small amount of harmful substances. To avoid possible injury: • Replace only with a battery of the type recommended by Lenovo. € Keep the battery pack away from fire. € Do not drop, crush, puncture, or subject to strong forces. Battery abuse or mishandling can cause the battery to overheat, which can cause gasses or flame to “vent” from the battery pack or coin cell. To replace the battery, do the following: Note: Your computer might look different from the following illustration. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait three to five minutes to let the computer cool. Close the computer display, and turn the computer over. Lenovo B575e To replace the backup battery, do the following: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait three to five minutes to let the computer cool. Close the computer display, and turn the computer over. See “Replacing the battery” on page 31. Remove the screws 1 , and then remove the cover 2 . Insert a screwdriver into the backup battery hole and push the backup battery until the battery pops up 3 . Reinstall the computer cover, and then reinstall the screws to secure the cover. See “Replacing the battery” on page 31. Connect the ac power adapter and all cables. Replacing the hard disk drive Before you start, print these instructions. [. . . ] Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice. The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. [. . . ]