CONTENTS safety precautions………………………………………………………………………………………3 block diagram and PHILIPS UOC functional difference between the various IC versions ………………….4 3. Replacement of memory IC……………………………………………………………………………7 4. Service adjustment……………………………………………………………………………………...7 5. ICs functional description………………………………………………………………………………11 6. Test point waveform………………………………………………………………………………….…15 7. All ICs/transistors voltages…………………………………………………………………………….16 8. Purity / convergence adjustment……………………………………………………………………..17...
SAFETY PRECAUTIONS The design of this product contains special hardware, many 10. Isolation Check circuits and components specially for safety purposes. For (Safety for Electrical Shock Hazard) continued protection, no changes should be made to the After re-assembling the product, always perform an isolation original design unless authorized in writing by the check on the exposed metal parts of the cabinet (antenna manufacturer.
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2 TV Block diagram for PAL-M / PAL-N TDA9361 video TUNER IF IN Y IN RF AGC V IN 4052 video BAND1 BAND2 U IN video CVBSINT video S-VHS CHROMA IFVO OUT TRAP video CVBS/Y IN audio 24C04 BTSC ARi2 TDA9850 ARi1 AUDIO OUT...
3.REPLACEMENT OF MEMORY IC 1. MEMORY IC. This TV uses memory IC. In the memory IC are memorized data for correctly operating the video and deflection circuits. When replacing memory IC, be sure to use IC written with the initial value of data. 2.
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1. first color value set to 0, then Press “TEST” key on the Remote control unit of factory. Press “0” to “9“ key, (Mkey) and corresponding on-screen display will be appeared. But to enter M4-M9, Must input passcord 828. On TV screen “TEST” will be indicated, this means entered bus control mode. And press following key, each function will be available.
TDA9370(STANDARD) EK cord=NTDA9370---2NA Items Variable Preset Items Variable Preset FREQUENCY 50HZ SUB Contrast 0~63 V.SLOPE 0~63 SUB color 0~63 V.SHIFT 0~63 SUB sharp 0~63 V.SIZE 0~63 SUBTINT 0~15 0~63 SUB Volume 0~63 H.SHIFT 0~63 OSD. V.POS 0~63 ON/OFF OSD.H.POS 0~59 AGC-SPEED PROGRAM NO ON/OFF...
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UOC TDA93XX SYMBOL DESCRIPTION STAND BY output. In STAND BY mode, high level (Power OFF). For Power ON this pin will be reduced to low. C-bus clock line C-bus data line TUNING tuning Voltage (Vt) PWM output P3.0/NTSC SW Port 3.0 or NTSC output/SCART SW input, Forced NTSC selection, Low-level output, otherwise High output.
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EHTO EHT/overvoltage protection input PLL IF IF-PLL loop filter IFVO/SVO IF video output / selected CVBS output supply voltage TV processor CVBS INT internal CVBS input GND1 ground for TV processor CVBS/Y CVBS/Y input CHROMA C input AUDOUT/AMOUT *1 audio output /AM audio output (volume controlled) INSSW2 RGB / YUV insertion input R2/VIN...
8. PURITY / CONVERGENCE ADJUSTMENT PURITY ADJUSTMENT WEDGE Demagnetize CRT with the demagnetizer. DEFLECTION YOKE Loosen the retainer screw of the deflection yoke. Remove the wedges. Input a green raster signal from the signal generator, and turn the screen to green raster. Move the deflection yoke backward.
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STATIC CONVERGENCE ADJUSTMENT 1. Input a crosshatch signal. 2. Using 4-pole convergence magnets, overlap the red and blue lines in the center of the screen (Fig. 1) and turn them to magenta (red/blue). (FRONT VIEW) 3. Using 6-pole convergence magnets, overlap the magenta (red/blue) and green lines in the center of the screen and turn them to white.
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