Daewoo CX-A21FB free download

File name CX-A21FB.pdf

Service Manual COLOR Television CHASSIS : CX-A21FB Model: Specification TV Standard NTSC-M, PAL-M, PAL-N Sound system AV STEREO Power consumption 90W Speaker 5W 8 Ohm x 2 CRT 21" Ultra Slim CRT Channel indication On screen display Auxiliary Terminal RCA jack : TV output and AV input Caution : In this Manual, some parts can be changed for improving. their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List)in Service Information Center. March 2012 TABLE OF CONTENTS 1.SAFETY INSTRUCTION 2 2.SCHEMATIC DIAGRAM 3 3.Descriptions for the operation of factory mode 4~14 4.Main PCB BOM LIST 15~19 5.WORK GUIDE 20~23 1. SAFETY INSTRUCTION WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 22-23 kV (14")or 24-26 kV (20"-21")at max beam current. The high voltage must not, under any circumstances, exceed 27.5 kV (14", 20"), 29KV (21"). Each time a receiver requires servicing, the high voltage should be checked. It is important to use an accurate and reliable high voltage meter.). 2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as specified in the parts list. SAFETY PRECAUTION 1. Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside the cabinet or with the back cover removed involves a shock hazard from the receiver. 1) Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment. 2) Discharge the high potential of the picture tube before handling the tube. The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. 2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List. 3. When replacing a high wattage resistor (oxide metal film resistor) in circuit board, keep the resistor body 10 mm away from the circuit board. 4. Keep wires away from high voltage or high temperature components. 5. This receiver must operate under AC 230 volts, 5O Hz. NEVER connect to a DC supply of any other voltage or frequency. PRODUCT SAFETY NOTICE Many electrical and mechanical parts