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Di350 SERVICE MANUAL [GENERAL] Safety Precautions for Inspection and Service When performing inspection and service procedures, observe the following precautions to prevent accidents and ensure utmost safety. V Depending on the model, some of the precautions given in the following do not apply. Different markings are used to denote specific meanings as detailed below. WARNING CAUTION Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. The following graphic symbols are used to give instructions that need to be observed. Used to call the service technician's attention to what is graphically represented inside the marking (including a warning). Used to prohibit the service technician's from doing what is graphically represented inside the marking. Used to instruct the service technician's to do what is graphically represented inside the marking. WARNING 1. Always observe precautions. · Parts requiring special attention in this product will include a label containing the mark shown on the left plus precautionary notes. Be sure to observe the precautions. · Be sure to observe the "Safety Information" given in the Operator's Manual. 2. Before starting the procedures, be sure to unplug the power cord. · This product contains a high-voltage unit and a circuit with a large current capacity that may cause an electric shock or burn. · The product also contains parts that can jerk suddenly and cause injury. · If this product uses a laser, laser beam leakage may cause eye damage or blindness. 3. Use the specified parts. · For replacement parts, always use the genuine parts specified in the manufacturer's parts manual. Installing a wrong or unauthorized part could cause dielectric breakdown, overload, or undermine safety devices resulting in possible electric shock or fire. · Replace a blown electrical fuse or thermal fuse with its corresponding genuine part specified in the manufacturer's parts manual. Installing a fuse of a different make or rating could lead to a possible fire. If a thermal fuse blows frequently, the temperature control system may have a problem and action must be taken to eliminate the cause of the problem. P-1 4. Handle the power cord with care and never use a multiple outlet. · Do not break, crush or otherwise damage the power cord. Placing a heavy object on the power cord, or pulling or bending it may damage it, resulting in a possible fire or electric shock. · Do not use a multiple outlet to which any other appliance or machine is connected. · Be sure the power outlet meets or exceeds the specified capacity. 5. Be careful with the high-voltage parts. · A part marked with the symbol shown on the left carries a high voltage. Touching it could result in an electric shock or burn. Be sure to unplug the power cord befo