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Summary of Contents for Parker TS2151
- Page 1 COLOR TELEVISION TS2151...
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Page 2: Table Of Contents
CONTENTS Safety precautions………………………………………………………………………..… Alignment instructions …………………………….…….………………………..…….… Working principle analysis of the unit……………………………….………….…………. Block diagram…………………………………..……………………….………….……… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………..……………... Troubleshooting………………………………………………………………………..…… Schematic diagram …………………………………………………………………….….. APPENDIX-A: Main assembly list APPENDIX-B: Exploded view... -
Page 3: Safety Precautions
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 hazard, the high voltage should fall within the limitation. -
Page 4: Alignment Instructions
4. If the CRT with magnetism affects color purity and convergence, when the auto degaussing eraser. if the color purity and convergence are still not very good, then corresponding adjustment should be done. Refer to picture tube adjustment method for adjustment. Alignment instruction 1. -
Page 5: Alignment Flow
PROM copy VIF adjustment High voltage check S-TRAP adjustment 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... - Page 6 3. Factory menu adjustment (FACTORY MENU PAGE) 3.1 VIF adjustment Receive a signal at will, enter factory menu VCJ ADJ, select VIF VCO, press “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 “...
- Page 7 Trape VS-CORE V-LIN 4. Checking point 4.1 High voltage check Connect High Voltage meter between CRT second anode and GND. Receive A7 signal, set user control to “STANDARD”, measure the high voltage value, the reading should be 25.5 kV±1 kV Set the brightness and contrast to minimum (zero beam current), measure the high voltage, the reading should not exceed 32kV.
- Page 8 table 1 factory menu FACTORY MENU 01. VIF VCO VIF VCO auto regulation 1: VCJ ADJ 02. RF DELAY TUNER AGC adjustment 03. S-TRAP S-TRAP auto regulation 06. H VCO H VCO auto regulation 07. V-POS Field center adjustment 08. V-SIZE Field amplitude adjustment 2: RASTER ADJ 09.
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Page 9: Working Principle Analysis Of The Unit
Working principle: Power part: The power adopts thick film integrate circuit STR-W6553 , which embedded power MOSFET and controller. It usually works at quasi-resonance or Bottom-Skip quasi-resonance and realizes the performance of high efficiency of switch power and low noise. Work at gap oscillation when stand-by to reduce the power consumption. -
Page 10: Block Diagram
Block diagram AUDIO SW YCbCr-A 4052BP AV2-A NB02 AV1/S-A AUDIO SPEAKER TDA7253 TUNER NV01 Z101 AV-A OUT VIDEO SW VIF, SIF AV1-V/S-Y TV-V VIDEO PROCESSOR 4052BP AUDIO PROCESSOR NB01 YCbCr-Y CHROMA EEPROM PROCESSOR N101 RGB INTERFACE AT24C08 REGULATOR YCbCr-CbCr VIDEO AMP AV-V OUT N102 2SC2688M... -
Page 11: Ic Block Diagram
IC Block diagram: 1.R2J1016XFP... - Page 12 Function Voltage Function Voltage S-IN 5.00 X-RAY STANDBY 0.04 S_MUTB 0.04 TEST0 AV1/AV2 AV1/TV control 0.08 AV/Y AV/Y control 0.04 REMOTE 5.00 PAL/N KEY1 VCC + 8V MCU +5V VDRV FILT VRAMP_CAP AFC_FIL XOUT 5.00 VCC + 5V HOUT FBP_IN 0.85 KEY2 Cb_IN...
- Page 13 2.STR-W6553A Pin function: STR-W6500 STR-X6500 Name Function [T0220F-6L] [T03PF-7L] Drain terminal Drain of MOSFET Source/Ground terminal MOSFET Source and Ground S/GND Power terminal Control power input SS/ADJ Soft-Start/over current Over current protect and Soft-Start protect timer adjust Feed Back terminal Timing voltage control signal input Gap oscillation control Bottom check terminal...
- Page 14 3.TDA7253...
- Page 15 4.TDA8177...
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Page 17: Troubleshooting
Troubleshooting guide 1. no raster, no sound If the power indicator light? There is short circuit primary The light is red, press Press POWER to Check secondary coil POWER can’t turn on turn on and the FU501 power the TV light is blue melted? Check if N102 56#... - Page 18 3. with sound, without picture With sound but without picture No raster Have raster Check if B+ Check Check N102 is normal N102 periphery RGB output If H/V circuit V301C# Abnormal works output Check normally? H-frequency board, turner and its periphery Normal Check each...
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