COLOR TELEVISION RECEIVER Chassis : KS2A(N) Model : TXK2750X/XAC TXK2754X/XAC TXK2754X/XAA TXK2767X/XAA TXK2767X/XAC TXK2766X/XAA TXK2768X/XAC TXK2768X/XAA COLOR TELEVISION RECEIVER CONTENTS Precautions Reference Information Specifications Alignment and Adjustments Troubleshooting Exploded Views and Parts List Electrical Parts List Block Diagrams Wiring Diagram Schematic Diagrams...
Precautions 1. Precautions Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays. 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are replaced. Restore any missing (READING SHOULD NOT BE ABOVE protective shields.
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Precautions 1-1 Safety Precautions (Continued) 15. Observe the original lead dress, especially 9. High voltage is maintained within specified near the following areas: Antenna wiring, limits by close-tolerance, safety-related sharp edges, and especially the AC and high components and adjustments. If the high voltage power supplies.
Precautions 1-2 Servicing Precautions Warning1: First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions. Warning2: An electrolytic capacitor installed with the wrong polarity might explode. 5.
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Precautions 1-3 Precautions for Electrostatically Sensitive Devices (ESDs) 1. Some semiconductor (“solid state”) devices 5. Use only a grounded-tip soldering iron when are easily damaged by static electricity. Such soldering or unsoldering ESDs. components are called Electrostatically Sensitive Devices (ESDs); examples include 6.
Reference Information 2. Reference Information 2-1 Tables of Abbreviations and Acronyms Table 2-1 Abbreviations Ampere Megavolt Ampere-hour Megawatt Å Angstrom Megohm Decibel Meter Decibel Referenced to One µA Microampere Milliwatt µF Microfarad °C Degree Celsius µH Microhenry °F Degree Fahrenheit µm Micrometer °K...
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Reference Information Table 2-2 Table of Acronyms Automatic Brightness Limiter Input/output Alternating Current Left Automatic Chroma Control Audio Frequency Light Emitting Diode Automatic Frequency Control Low Frequency Automatic Fine Tuning MOSFET Metal-Oxide-Semiconductor-Field-Effect-Tr Automatic Gain Control Multi-channel Television Sound Amplitude Modulation National Association of Broadcasters ANSI American National Standards Institute...
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Reference Information 2-2 IC Line Up Table 2 - 3 IC Line - Up BOARD LOC. NO SPEC REMARK DESCRIPTION Video Processor Refer to Table 2-3-1 IC201S VDP3112B IC601 MSP3440D NTSC Sound Processor IC901 SDA555X MICOM, Caption (MTP) KS24L161 EEPROM IC902 Refer to Table 2-3-2 Audio AMP...
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Reference Information Table 2 - 3 IC Line - Up BOARD LOC. NO SPEC REMARK DESCRIPTION IC501 TDA6101Q Video Output AMP R.G.B Drive IC502 IC503 QF04 2SC2344 Option Push-Pull (VM) 2SA1011 QF05 Option V-S/W ICS01 TEA6425 Video Switching IC with Adder Output Option High-end Picture-In Picture IC ICP01...
Specifications 3. Specifications Television NTSC-M, PAL N.M Option Multi System Antena Input 75ohms, Coaxial Cable Consumption Option 160W (Applied When 29” Flat) Option Free Volts(100V-240Volts) Power Requirements Not Present R815 Free Voltage Frequency 50/60Hz 15W x 2CH Output 10W x 2CH 5W x 2CH Sound Option...
Alignment and Adjustments 4. Alignment and Adjustments 4-1 General Alignment Instructions 1. Usually, a color TV-VCR needs only slight 5. Avoid overload. Excessive signal from a touch-up adjustment upon installation. Check sweep generator might overload the front-end the basic characteristics such as height, of the TV.
Alignment and Adjustments 4-4 FOCUS Adjustment Input a black and white signal. 2. Adjust the tuning control for the clearest picture. 3. Adjust the FOCUS control for well defined scanning lines in the center area of the screen. 4-5 SCREEN Adjustment 1.
Alignment and Adjustments 4-6 E PROM (IC902) Replacement 1. When IC902 is replaced, all adjustment data revert to the initial values. So, all adjustment values when servicing should be readjusted. 2. After IC902 is replaced, connect the AC power supply cord. 3.
Alignment and Adjustments 4-8 Factory Adjustment 4-8-1 Service Mode 1. To enter the “Service Mode”, Press the remote-control keys in this sequence : - If you do not have Factory remote-control PICTURE OFF MUTE 1,8,2 PICTURE ON - If you have Factory remote-control PICTURE ON DISPLAY ( FACTORY...
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Alignment and Adjustments SIM-408A USA,LATIN FACTORY (VDP IC VDP3108B) 4-8-2 Deflection (Memory Data) - SIM408A USA, LATIN FACTORY (VDP IC VDP3108B) 4-8-2(A) GEOMETRIC ADJUSTMENT VALUE INCH 27V 1.3R 23V 1.3R 25V 1R 27V 1R 20V 1R 15" FLAT 15" FLAT TXK2550 TXK2060 TXK2554...
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Alignment and Adjustments 4-8-2(B) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT) V Shift V Amp V Slope V SC H EW H Trapizium H Symmetry H Parabola H Corner H Shift Samsung Electronics...
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H CORNER Control 69(FIX) 69(FIX) 69(FIX) 69(FIX) H SHIFT Control PIP CONTRAST PIP TINT PIP PAL V.POS Alignment and Adjustments PIP NTSC V.POS PIP H.POS 4-8-2(C) VIDEO ADJUST 1 INCH 27V 1.3R 23V 1.3R 25V 1R 25V 1R 27V 1R 20V 1R 20V 1R 15"...
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BCL TIME DVD SUB TINT N. YC DELAY Alignment and Adjustments 4-8-2(D) VIDEO 2 ADJUST INCH 27V 1.3R 23V 1.3R 25V 1R 27V 1R 20V 1R 15" FLAT TXK2550 TXK2060 TXK2554 TXK2750 Model CL25D4W CT-15A8 TXK2767 TXK2066 TXK2566 TXK2754 TXK2067 TXK2567 CL663BW VIDEO ADJUST2...
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MODULATION ON/OFF CL663BW VIDEO ADJUST3 INIT A TILT POINT PEAK WHITE LIMLT B TILT POINT SOFT LIMIT SLOPE B GAIN 1 (VIDEO) HARD LIMIT DELAY 1 (VIDEO) Alignment and Adjustments MODULATION ON/OFF PEAK VIDEO REF A TILT POINT PEAK VIDEO GAIN B TILT POINT LIMIT VALUE Note 2.
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Alignment and Adjustments SIM-408A USA,LATIN FACTORY (VDP IC VDP3130Y) 4-8-3 Deflection (Memory Data) SIM-408A USA,LATIN FACTORY (VDP IC VDP3130Y) - SIM408A USA, LATIN FACTORY (VDP IC VDP3130Y) 4-8-3(A) GEOMETRIC ADJUSTMENT VALUE INCH 15" FLAT 21" FLAT 25" FLAT INCH 27V 1.3R 15"...
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Alignment and Adjustments 4-8-2(C) VIDEO 2 ADJUST INCH 15" FLAT 21" FLAT 25" FLAT INCH 27V 1.3R 15" FLAT 21" FLAT 25" FLAT Model CL15A8 CL21A8 INCH 27V 1.3R 15" FLAT 21" FLAT 25" FLAT Model VIDEO ADJUST2 INIT TXK2768 CL15A8 CL21A8 CL25A6...
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Alignment and Adjustments 4-8-3(E) OTHERS INCH 27V 1.3R 15" FLAT 21" FLAT 25" FLAT INCH 15" FLAT 21" FLAT 25" FLAT Model INCH 27V 1.3R 15" FLAT 21" FLAT 25" FLAT TXK2768 CL15A8 CL21A8 CL25A6 Model OTHERS INIT CL15A8 Model OTHERS INIT TXK2768...
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Alignment and Adjustments 4-9 MICOM 4-9-1 Pin Layout Write Protect Tilt EEPROM SDA N.C. EEPROM SCL Power Bus-Stop Sound Mute Main SDA N.C. Main SCL N.C. Sound Reset PX. Y Video Reset PX. Y VDD 2.5V VDD 3.3V VDD 3.3V VDD 2.5V CVBS Input CORE...
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Alignment and Adjustments 4-9-2 Pin Assignment Specification PIN NO FUNCTION IN/OUT ASSIGN ACTIVE H/L DESCRIPTION Write Protect EEPROM Write Protection ROM SDA EEPROM Serial Data Line ROM SCL EEPROM Serial Clock Line Disable Micom IIC Bus Stop Main SDA Peripheral IC Serial Data Line Main SCL Peripheral IC Serial Clock Line Sound Reset...
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Alignment and Adjustments 4-9-2 Pin Assignment Specification (Continued) PIN NO FUNCTION ASSIGN IN/OUT ACTIVE H/L DESCRIPTION Relay Activate Degausssing Coil Not Used (Programmed Gound Level) N.C. Analog Ground Not Used (Programmed Gound Level) VDD 3.3V Not Used (Programmed Gound Level) N.C.
Troubleshooting 5. Troubleshooting 5-1 No Power Disconnect the Power Cord Check/Replace IC803, 805 Abnormal Check Normal Normal LED ON Check Check IC901 Check IC901 the voltage of Power LED IC803, 805 LED OFF Abnormal Normal Abnormal Check Normal Normal Check Abnormal Check Check IC908 and...
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Troubleshooting 5-2 No Raster (Sound OK) No Raster Check Check the fusible resistance (Sound OK) Fusible Resistance of abnormal volatge line Abnormal Abnormal Check Check Check Abnormal Normal Normal Check R.G.B Signal RK,GK,BK Signal voltage of output from input to CRT PCB (200V, 16V) heater CRT PCB...
Troubleshooting 5-3 No Sound No Sound Check Normal Abnormal the signal output from CN601, 602 Pins Check Check Normal Abnormal the signal input Speaker and Wire to IC602 pins 4 12 Check Normal Check the signal input IC602 B+ to IC601 Pin Abnormal Normal Abnormal...
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Troubleshooting 5-4 Horizontal Lines Appear on screen Horizontal Lines Apper on screen Check Normal Abnormal IC301 B+ (16V, -16V) Check B+ Line and the fusible Check resistance of R425, 424 Normal the VDP Signal output from IC201 Abnormal Check/Replace Check IC301 IC201 Samsung Electronics...
Wiring Diagram 9. Wiring Diagram FRONT AV PCB CN06A TO SPEAKER CN05A CN01A CN501B GT804 CN502B +16V Heater 180V CN501A CN602 B Out G Out R Out CN701 Sense CN502A +16V Heat 220V GT102 Samsung Electronics...