Aiwa T2751 T3251 free download

File name HT2751.pdf

SERVICE MANUAL CONTENTS 1. INSTRUCTION...1 2. ALIGNMENT PROCEDURE...2 3. FOR FACTORY MENU ADJUSTMENT SEE CHART5~CHART11...5 4. GENERAL DESCRIPTION OF THE SDA 9380-B21...10 5. INTRODUCTION OF THE VPC 3230D...12 6. INTRODUCTION OF THE MSP 3425G...14 7. GENERAL DESCRIPTION OF THE PW1235...15 8. GENERAL DESCRIPTION OF THE TDA6111Q...18 WIRING DIAGRAM...20 BLOCK DIAGRAM...21 SCHEMATIC DIAGRAM...22 ELECTRICAL PARTS LIST...27 0 CAUTION: THIS SERVICE MANUAL IS ONLY FOR PROFESSIONAL SERVICE PERSONNEL'S REFERENCE. BEFORE SERVICING THIS CHASSIS, PLEASE READ THE FOLLOWING NOTICE ITEMS. 1. 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 see below chart: Chart 1 High voltage requirement Model T2751 T3251 High voltage normal value 30 kV 30 kV 1 kV 1 kV Utmost value 35 kV 35 kV Beam current 1.6 mA 1.6 mA 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. * When checking, main power (B+) should be kept at 135 V (for Toshiba pure flat CRT). 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) Since the power supply circuit of this receiver is directly connected to the