12Chapter 1Getting StartedUpgrade RelatedBe sure to upgrade the computer byyourself only if you have sufficientknowledge and ability.If this is not the case, ask for assistance fromthe service center or an authorized engineerfor the upgrade.Be sure to upgrade only the parts specifiedin the user manual according to theprocedures described in the user manual.Do not disassemble any other parts or devicesby yourself. There is a danger of a electricshock, fire or damage to the product.Never disassemble the power supply or ACadapter.There is a danger of electric shock.When removing the RTC (Real Time Clock)battery, keep it out of the reach of childrenas they could touch and/or swallow it.There is a danger of choking. If a child hasswallowed it, contact a doctor immediately.Avoid direct sunlight when the computeris in an air-tight location such as inside avehicle.There is a danger of a fire hazard. The computermay overheat and also present opportunity tothieves.Do not use your computer for longperiods of time while any part of yourbody is making direct contact with it. Thetemperature of the product may increaseduring normal operation.This may result in harming or burning your skin.Safety PrecautionsWarningFailure to follow instructions marked with this symbol maycause personal injury and even fatality.