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File name ELITE 21ES63.pdf

SERVICE MANUAL CONTENTS X-RAY RADIATION PRECAUTION...1 SAFETY PRECAUTION...1 PRODUCT SAFETY NOTICE...2 GENERAL INSTRUCTION...2 ALIGNMENT ITEMS AND PROCEDURE...2 ADJUSTMENT METHOD...3 CHECKING POINT...5 ALIGNMENT INSTRUCTION...6 WIRING DIAGRAM...12 BLOCK DIAGRAM...13 IC BLOCK DIAGRAM...14 SCHEMATIC DIAGRAM...18 ELECTRICAL PARTS LIST...19 0 CAUTION: THIS SERVICE MANUAL IS ONLY FOR PROFESSIONAL SERVICE PERSONNEL'S REFERENCE. BEFORE SERVICING THIS CHASSIS, PLEASE READ THE FOLLOWING NOTICE ITEMS. 1. SAFETY INSTRUCTION AND GENERAL INSTRUCTION Before servicing and aligning this equipment, please read the following "X-RAY RADIATION PRECAUTION" ,"SAFETY PRECAUTION" and "PRODUCT SAFETY NOTICE". 1.1 X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not be above the specified limit. The normal value of the high voltage of this receiver is under 27.5kV at zero beam current (minimum brightness) under DC110V main power(B+) , the high voltage must not, under any circumstances, exceed 28kV. 2. Each time a receiver requires servicing, the high voltage should be checked following the HIGH VOLTAGE CHECK procedure in this manual. It is recommended the reading of the high voltage be recorded as a part of service record. It is important to use an accurate and reliable high voltage meter. 3. The primary source of X-RAY RADIATION in this TV receiver is the picture tube. For continuous X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as specified in the parts list. 4.Some parts in this receiver have special safety-related characteristics for X-RAY RADIATION protection. For continuous safety, parts replacement should be undertaken only after referring to the PRODUCT SAFETY NOTICE below. 1.2 SAFETY PRECAUTION WARNING: Service should not be attempted by anyone unfamiliar with the necessary precaution on this receiver. The following are the necessary precautions to be observed before servicing this chassis. 1)