First th in gs firstTaking care of your ET180xvii• If the device went into sleep mode, allow ample time before turning it back on toallow for a smoother power mode transition.• Use the correct external power source. The device should be operated only fromthe type of power source indicated on the electrical ratings label. If you are notsure of the type of power source required, consult your authorized service supportor local power company.IMPORTANT: This product is intended for use with certified Class 2, rated 5.4 V dc, minimum 1.85Apower supply unit.• Never push unwarranted objects of any kind into any slots or openings in thedevice.• Do not place the device on any unstable surface.• Use only approved peripheral devices and accessories with your device. Refer tothe documentation that came with the peripheral device/accessory for properinstallation and usage.• Unplug any cables from the product before cleaning it. Use a soft, damp cloth toclean your device. Do not use liquid cleaners or aerosol cleaners.General usage precautionsTo reduce the risk of bodily injury, electric shock, fire, and damage to the equipmentobserve the following precautions:• Heed service markings. Except as explained elsewhere in this User’s Guide, donot service the device yourself. Refer any all servicing needs to an authorizedservice technicians.• When any of the below conditions are present, unplug all cables from the deviceand refer it for servicing to an authorized service technician:– The device has been exposed to rain or water.– The device has suffered considerable impact from being dropped or anobject has fallen on it.– There are noticeable signs of overheating.– The product does not operate normally when you follow the operatinginstructions.Safety precautions for the main battery packYour device uses a removable and rechargable Lithium Ion polymer battery pack.• Handle battery packs carefully. There is a risk of fire and burns if the battery packis handled improperly. Do not attempt to open or service the battery pack.• Do not disassemble, crush, puncture, short external contacts or circuits, disposeof in fire or water, or expose a battery pack to temperatures higher than 60°C(140°F).• Danger of explosion if battery is incorrectly replaced. Replace only with specifiedbatteries.• Dispose of used batteries according to the local regulations or reference guidesupplied with the battery pack.Screen recalibrationWhen you first startup your ET180, you will be asked to calibrate the screen by tappingthe center of a cross with your stylus as it moves around the screen. This processensures that when you tap the screen with your stylus the item tapped is activated.If, however, while using your device, you discover tapping an item doesn’t bring up theappropriate response, it means your device has lost its calibration.To recalibrate the screen1 Launched the Align Screen window by doing either of the following:• Software launchinga Tap , and then Settings.b On the System tab, tap the Screen icon .c On the Screen window, tap the Align Screen button.