COLOR TELEVISION RECEIVER Chassis : K15A Model: TXH1370 TXH1970 TXH1372 TXH1972 TXH1373 TXH1973 TXH1386 TXH1986 COLOR TELEVISION RECEIVER CONTENTS Precautions Specifications Disassembly and Reassembly Alignment and Adjustments Troubleshooting Exploded Views and Parts List Electric Parts List Block Diagram PCB Layout...
The current measured should the XÐray Protection Specifications Label, and not exceed 0.5 milliamp. Reverse the power- the Product Safety and X-ray Warning Note on plug prongs in the AC outlet and repeat the the service data schematic. test. Samsung Electronics...
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14. Components, parts and wiring that appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications. Always determine the cause of damage or overheat- ing, and correct any potential hazards. Samsung Electronics...
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Make sure that the portion around the serviced part has not been damaged. 8. Always connect a test instrumentÕs ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrumentÕs ground lead last. Samsung Electronics...
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4. Do not use freon-propelled chemicals. These unpackaged replacement ESDs. Motions such can generate electrical charges that damage as brushing clothes together, or lifting a foot ESDs. from a carpeted floor can generate enough static electricity to damage an ESD. Samsung Electronics...
Disassembly and Reassembly 3. Disassembly and Reassembly 3-1 Back Cover Removeal Fig. 3-1 1. After removing the screws, pull the cabinet backwards. Samsung Electronics...
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2. Remove the Anode Cap from the CRT. 3. Remove the main board by pulling it with both hands. Warning: The FBT is charged with high voltage. Before removing the Anode Cap, discharge the voltage through one of the heat sinks on the main board. Samsung Electronics...
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Disassembly and Reassembly 3-3 Speaker Removal 1. Loosen the screws and remove the speakers. Fig. 3-4 Samsung Electronics...
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(1) Always lift the picture tube by grasping it firmly around the face- plate, (2) Never lift the tube by its neck. (3) Do not scratch the picture tube or apply excessive pressure. Fractures of the glass may cause an implosion. Samsung Electronics...
SVC : MUTE Return to the Factory mode via the MENU Select a mode to be adjusted, using the chan- key. nel down key. Example: VCO. ADJUSTMENT PATTERN OPTION RESET Press POWER to enter the Stand-by mode. SVC : MUTE Samsung Electronics...
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VERTICAL SIZE Adjustment 0~63 Press volume + key. 14 VS VERTICAL CENTER Adjustment POWER 15 HS HORIZONTAL Phase Adjustment 0~31 16 SS SUB-SHARPNESS Adjustment 0~31 Note : The initial MICOM data values take effect when IC902 is replaced. Samsung Electronics...
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5. To recover picture and sound, temporarily turn off the TV and allow the failsafe circuit more than 30 seconds to reset. Then switch power ON to produce normal picture and sound. Samsung Electronics...
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2.4V 0.1Vpp 4-2-9 Sub-Tint Adjustment Input a rainbow pattern. Check CN201 B-OUT with an oscilloscope. 3. Adjust STT in the service mode until the 6th peak is the highest and the 5th and 7th peaks have equal heights. Samsung Electronics...
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3. Recheck in low light. 4-2-12 Sub-Brightness Adjustment 1. Input a Toshiba pattern. 2. Warm up the receiver for 10 minutes. 3. Enter the Service Mode and set SB to the point where the 5th point is brighter in the gray scale. Samsung Electronics...
Abnormal Check Abnormal (0 ~ 15V) IC801 Pin 3 B + . Check/Replace Normal (15~20V) D806, Q401, Q801, D802, D814* Normal (0.5 ~ 3V) Abnormal (0V) Check IC801* Pin 4 Voltage Check/Replace Check/Replace DZ802, DZ803, D806 PC802, DZ807 Samsung Electronics...
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IC602 Pins 4. Abnormal Check Normal Waveform of IC201 Check Pin 1. Normal (approx. 12V) Voltage of IC601 and IC602 Pin 5. Abnormal Abnormal Check Volume SIF (L201). Replace IC601 Check Power and IC602. 12V Line Voltage. Check/Replace IC201. Samsung Electronics...
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24V-C Voltage. Check Check Abnormal FBT Pin 2 (24V) Waveform of IC201 Oscillation. Pins 22,24. Normal Check Whether a horizontal line appears in Normal Check R409 Check/Replace the service mode.. Open. FBT. Open Check/Replace Check/Replace Check/Replace R409. IC301. IC201. Samsung Electronics...
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Check Abnormal IC201 Pin 47 Normal (1Vp-p) waveform level. Check Normal (2Vp-p) Abnormal IC201 Pins 19,20, 21 waveform level. Check IC201 Pin 37 waveform Normal (3~5Vp-p) level. Check CRT PCB (180V) Replace IC201. and heater Voltages. Normal (1Vp-p) Samsung Electronics...