Warning and Cautions5. Warning and Cautions1. When you clean the TV set, please pullout the power plug from AC outlet. Don'tclean the cabinet and the screen withbenzene, petrol and other chemicals.4. To prevent the TV set from firing andelectric shock, don'tmake the TV set rainor moisture.2. In order to prolong the using life of theTV set, please place it on a ventilatedplace.5. Don't open the back cover, otherwise it ispossible to damage the components in theTV set and harm you.3. Don't place theTV set in th esunshine or nearheat source.6. When the TV set isn't going to be usedfor long time or it is in thunder andlightening, please pull out the plug from ACoutlet and the antenna plug from the coverof the TV set.Explanation on the display tubeGenerally, it is not needed to clean the tube surface. However, if necessary,its surface can becleaned with a dry cotton cloth after cutting off the power.Don't use any cleanser. If using hardcloth, the tube surface will be damaged.CAUTION: Before servicing receivers covered by this service manual and its supplements andaddenda, read and follow the SAFETY PRECAUTIONS.6NOTE: If unforeseen circumstances create conflict between the following servicing precautionsand any of the safety precautions, always follow the safety precautions. Remember: SafetyFirst.