18 - First things first• Never place the computer on uneven surfaces.Taking care of your AC adapterHere are some ways to take care of your AC adapter:• Do not connect the adapter to any other device.• Do not step on the power cord or place heavy objects on top of it.Carefully route the power cord and any cables away from foot traffic.• When unplugging the power cord, do not pull on the cord itself but pullon the plug.• The total ampere ratings of the equipment plugged in should not exceedthe ampere rating of the cord if you are using an extension cord. Also,the total current rating of all equipment plugged into a single wall outletshould not exceed the fuse rating.Cleaning and servicingWhen cleaning the computer, follow these steps:1. Turn off the computer.2. Disconnect the AC adapter.3. Use a soft, moist cloth. Do not use liquid or aerosol cleaners.If either of the following occurs:• The computer has been dropped or the body has been damaged;• The computer does not operate normallyPlease refer to "Frequently asked questions" on page 89.