Lenovo ThinkPad A21e English - A21e(2655) Service and Troubleshooting Guide - Page 16
Caring for your ThinkPad computer, Occasionally clean your computer as follows
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Caring for your ThinkPad computer v Only an authorized IBM ThinkPad repair technician should disassemble and repair your computer. v Do not modify or tape the latches to keep the display open or closed. v Take care not to turn your computer over while the ac adapter is plugged in. This could break the adapter plug. v Turn off your computer if you are replacing a device in a device bay, or else verify that the device is warm- or hot-swappable. v If you exchange drives in your computer, reinstall the plastic bezel faces (if supplied). v Store your external and removable hard disk, diskette, CD-ROM, and DVD-ROM drives in the appropriate containers or packaging when they are not being used. Cleaning your computer Occasionally clean your computer as follows: v Use a soft cloth moistened with nonalkaline detergent to wipe the exterior of the computer. v Avoid spraying cleaner directly on the display or the keyboard. v Gently wipe the display with a dry, soft cloth. 8 ThinkPad® A21e Service and Troubleshooting Guide