11Before Using the ProductBefore Using the ProductSafety PrecautionsSymbols for safety precautionsCautionRISK OF ELECTRIC SHOCK DO NOT OPENCaution: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (ORBACK). THERE ARE NO USER SERVICEABLE PARTS INSIDE. REFER ALL SERVICING TOQUALIFIED PERSONNEL.This symbol indicates that high voltage is present inside. It is dangerous tomake any kind of contact with any internal part of this product.This symbol alerts you that important literature concerning operation andmaintenance has been included with this product.Warning A serious or fatal injury may result if instructions are not followed.CautionPersonal injury or damage to properties may result if instructions arenot followed.Activities marked by this symbol are prohibited.Instructions marked by this symbol must be followed.