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TS2151 Dataheets PDF



Part Number TS2151
Manufacturers ETC
Logo ETC
Description COLOR TELEVISION SERVICE MANUAL
Datasheet TS2151 DatasheetTS2151 Datasheet (PDF)

COLOR TELEVISION T S 2 151 http://www.Datasheet4U.com CONTENTS Safety precautions………………………………………………………………………..… 1 Alignment instructions …………………………….…….………………………..…….… 2 Working principle analysis of the unit……………………………….………….………….7 Block diagram…………………………………..……………………….………….……… 8 IC block diagram………………………………………………………………………..……9 Wiring diagram ……………………………………………………………..……………... 14 Troubleshooting………………………………………………………………………..…… 15 Schematic diagram …………………………………………………………………….….. 18 APPENDIX-A: .

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COLOR TELEVISION T S 2 151 http://www.Datasheet4U.com CONTENTS Safety precautions………………………………………………………………………..… 1 Alignment instructions …………………………….…….………………………..…….… 2 Working principle analysis of the unit……………………………….………….………….7 Block diagram…………………………………..……………………….………….……… 8 IC block diagram………………………………………………………………………..……9 Wiring diagram ……………………………………………………………..……………... 14 Troubleshooting………………………………………………………………………..…… 15 Schematic diagram …………………………………………………………………….….. 18 APPENDIX-A: Main assembly list APPENDIX-B: Exploded view Note: This service manual is only for professional service personnel’s reference. Before servicing the unit, please read the following items carefully. Safety instruction 1. X-RAY radiation precaution 1.1 Excessive voltage will cause harmful X-ray . To avoid this radiation hazar d, the high volt age should fall within the limitation. The appliance works at AC 110V, 60Hz. The high voltage of zero beam curr ent (brightness is min) should be within 29kV on condition that th e main power voltage is AC1 10V. And it should not exceed 33kV in any condition. When servicing, please refer to the HIGH VOLTAGE CHECK procedure this service manual before check the high voltage and the high voltage meter should be reliable and accurate. * Keep the main power voltage at 110V when checking the high voltage. 1.2 The primary source of X-RA Y RADIATION is t he CR T. The CR T of this TV set h ave gotten th e approval of safety authentication inspection. The replacement CRT should be exactly the same type and specification CRT which has gotten a similar safety appro val, and check the high volt age according to the HIGH VOLTAGE CHECK procedure. 2. Safety precaution a. Since the power supply circuit of this receiver is directly c onnected to the AC power line, an isolation transformer is necessary during dynamic service to avoid possible shock hazard. b. Always discharge the graphite layer conductor when moving the CRT. c. Disconnect the power cord before replacing parts. d. When replacing high-power resistor, keep the resistor 10 mm away from the circuit board. 3. Component safety precaution Many electrical and mechanical p arts in the chassis have spe cial safety-related characteristics. The se characteristics are often passed unnoticed by a visual inspection. Replacement parts which have th ese special safety characteristics ar e identified in this manual and it s supplement electrical component s having such features are shaded or marked by on the schematic diagram and the parts list. Before replacing an y of these components, read the p arts list in this m anual carefully. The use of substitute replacement parts which do not have t he same characteristic as specified in the parts list may c reate shock, fire, X-RAY RADIATION or other hazards. General instruction 1. Copy the st andard model dat a to let EEPROM (N101 M24C16)of the c hassis have those dat a before placing it on the unit, do “f actory adjustment” if necessar y. If use a blank EEPROM directly , you should preset IIC data and then do other common adjustment. 2.The adjustment should be done under following circumstances without additional instruction a) Alternating current 110V/60Hz b) Preheat at least 30 min 3.The unit has auto deg aussing circuit, the auto dega ussing process c an be finished within 1s whe n the main power . Only w hen turn on the unit at least 30min after last time turn of f TV does the auto degaussing circuit work. 1 4. If the CRT with magnetism affects color purity and convergence, when the auto degaussing eraser. if the color purity and conver gence are still not very good, then corresponding adju stment should be done. Refer to picture tube adjustment method for adjustment. Alignment instruction 1. Debugging item a) VIF adjustment b) S-TRAP adjustment c) H VCO adjustment d) OSD adjustment e) B+ voltage adjustment f) RF AGC voltage adjustment g) Focus adjustment h) Screen-grid voltage white balance adjustment i) Field, line scan center adjustment j) Filed, line amplitude adjustment k) Raster adjustment 2. Alignment flow 2 E2PROM copy VIF adjustment S-TRAP adjustment High voltage check H VCO adjustment X-ray protect check OSD adjustment Filament voltage check B+ adjustment Picture and sound check RF AGC adjustment Sub brightness check Focus adjustment White balance check Screen-grid voltage white balance adjustment Color Purity, convergence check Scan amplitude, center and raster adjustment AV, S terminal check Check The unit and remote control Fig-1 alignment flow 3 3. Factory menu adjustment (FACTORY MENU PAGE) 3.1 VIF adjustment Receive a si gnal at will, enter factory menu VCJ AD J, select VIF VCO, pr ess “VOL+/_”, then display “END” and it means IC has adjust IF to 45.75MHz automatically. 3.2 S-TRAP adjustment Receive a signal at will, enter factory menu VCJ ADJ, select S-TRAP, press “ VOL+/_”, then IC will adjust S-TRAP to the best situation. 3.3 H VCO adjustment Receive a sig.


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