11Useful InformationHandling and MaintenanceOperation environment● Place the computer on a flat stable surface not subject to shock, vibration, and danger ofdropping. Do not place the computer upright or turn it over. If the computer is exposed to anextremely strong impact, it may become damaged.● Operating environmentTemperature: Operation : 5 °C to 35 °C {41 °F to 95 °F}Storage : -20 °C to 60 °C {-4 °F to 140 °F}Humidity: Operation : 30% to 80% RH (No condensation)Storage : 30% to 90% RH (No condensation)Even within the above temperature/humidity ranges, operation for a long time in extremeenvironments, smoking nearby, or operation in places where oil is used or where there is a lot ofdust will result in the product deterioration and will shorten the product life.● Do not place the computer in the following areas, otherwise the computer may be damaged.• Near electronic equipment. Image distortion or noise may occur.• In extremely high or low temperature.● As the computer can become hot during operation, keep it away from items that are sensitive to heat.Handling cautionsThis computer is designed to minimize shock to parts such as the LCD and the flash memorydrive, but no warranty is provided against any trouble caused by shock. Be extremely careful whenhandling the computer.● When carrying the computer:• Turn off the computer.• Remove all external devices, cables, Smart Cards and other protruding objects.• Do not drop or hit the computer against solid objects.● When you board an airplane, take the computer with you and never put it in your checkedluggage. When using the computer on airplane, follow the airline’s instructions.● Use only fingers to touch the screen. Do not place any object on its surface and do not pressdown strongly with sharp-pointed or hard objects that may leave marks (e.g., nails, pencils andball point pens).● Avoid any harmful substances such as oil from getting into the touchscreen. The pointer may notwork correctly.● Be careful not to get injured by dropping or getting hit when carrying the computer.■ When the battery indicator does not light onThe battery indicator may not light on even if the AC adaptor is correctly connected to the computer,due to the following reasons.● The AC adaptor’s protection function may be working. In this case, pull out the AC cord and waitfor more than 1 minute before reconnecting the AC cord.■ When using peripheral devicesFollow these instructions and the Reference Manual to avoid any damage to the devices. Carefullyread the instruction manuals of the peripheral devices.● Use the peripheral devices conforming to the computer’s specifications.● Connect to the connectors in the correct direction.● If it is hard to insert, do not try forcibly but check the connector’s shape, direction, alignment ofpins, etc.● If screws are included, fasten them securely.● Remove the cables when you carry the computer. Do not pull the cables forcibly.