Optoma PD50 User Manual - Page 6

Safety Precautions CAUTION If Problems occur during use If a problem occurs(such as no picture or no sound), or if smoke or an abnormal odor is detected from the High Definition Plasma Display, unplug the power cord immediately.  Continuous use of the Display under these conditions might cause fire or permanent damage to the unit. Have the Display evaluated at an Authorized Service Center. Services to the Display by any unauthorized personnel are strongly discouraged due to its high voltage dangerous nature. If water or foreign objects get inside the High Definition Plasma Display, if the High Definition Plasma Display is dropped, or if the cabinet becomes damaged, disconnect the power code plug immediately.  A short may occur, which could cause fire. Contact an Authorized Service Center for any repairs that need to be made. When using the High Definition Plasma Display Do not bring your hands, face or objects close to the ventilation holes of the High Definition Plasma Display.  Top of High Definition Plasma Display is usually very hot due to the high temperature of exhaust air being released through the ventilation holes. Burns or personal injuries can happen if any body parts are brought too close. Placing any object near the top of the display could also result in heat damages to the object as well as to the Display if its ventilation holes are blocked. Be sure to disconnect all cables before moving the High Definition Plasma Display.  Moving the Display with its cables attached might damage the cable which, in turn, can cause fire or electric shock. Disconnect the power plug from the wall outlet as a safety precaution before carrying out any cleaning  Electric shocks can result if this is not done. Clean the power cable regularly to prevent it from becoming dusty.  Built-up dust on the power cord plug can increase humidity which might damage the insulation and cause fire. Unplug the cord from the wall outlet and clean it with a dry cloth. 6 Cleaning and maintenance The front of the display panel has been specially treated. Wipe the panel surface gently using only a cleaning cloth or a soft, lint-free cloth.  If the surface is particularly dirty, soak a soft, lint-free cloth in a weak detergent solution and then wring the cloth to remove excess liquid. Use this cloth to wipe the surface of the display panel, then wipe it evenly with a dry cloth, of the same type, until the surface is dry.  Do not scratch or hit the surface of the panel with fingernails or other hard objects. Furthermore, avoid contact with volatile substances such as insect sprays, solvents and thinner, otherwise the quality of the surface may be adversely affected. If the cabinet becomes dirty, wipe it with a soft, dry cloth.  If the cabinet is particularly dirty, soak the cloth in a weak detergent solution and then wring the cloth dry. Use this cloth to wipe the cabinet, and then wipe it dry with a dry cloth.  Do not allow any detergent to come into direct contact with the surface of the High Definition Plasma Display. If water droplets get inside the unit, operating problems may result.  Avoid contact with volatile substances such as insect sprays, solvents and thinner, otherwise the quality of the cabinet surface may be adversely affected or the coating may peel off. Furthermore, do not leave it for long periods in contact with articles made from rubber or PVC.