Specifications

ManualsBrandsSamsung ManualsTV ReceiverCT21D8L6X/XTC

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This file is provided FREE OF CHARGE from the electromaniacs.com community You are free to distribute this file to other persons who needs it , but without of charge Also on http://electromaniacs.
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COLOR TELEVISION RECEIVER Chassis : Model : COLOR TELEVISION RECEIVER K15A CT21D8L6X/XTC CT5038G6X/XAP CONTENTS 1. Precautions 2. Specifications 3. Disassembly and Reassembly 4. Alignment and Adjustments 5. Troubleshooting 6. Exploded Views and Parts List 7. Electric Parts List 8. Block Diagram 9. PCB Layout 10. Wiring Diagrams 11.
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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 protective shields. 2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including: nonmetallic control knobs and compartment covers. 3.
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Precautions 1-1 Safety Precautions (Continued) 9. High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components. 10. Design Alteration Warning: Never alter or add to the mechanical or electrical design of this unit. Example: Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard.
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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. 1. Servicing precautions are printed on the cabinet. Follow them. 2.
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Precautions 1-3 Precautions for Electrostatically Sensitive Devices (ESDs) 1. Some semiconductor (Òsolid stateÓ) devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs); examples include integrated circuits and some field-effect transistors. The following techniques will reduce the occurrence of component damage caused by static electricity. 2.
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Specifications 2.
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Disassembly and Reassembly 3. Disassembly and Reassembly 3-1 Back Cover Removeal Fig. 3-1 1. After removing the screws, pull the cabinet backwards.
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Disassembly and Reassembly 3-2 Main Board Removal Fig. 3-2 Fig. 3-3 1. Separate the socket board from the CRT neck. 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.
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Disassembly and Reassembly 3-3 Speaker Removal 1. Loosen the screws and remove the speakers. Fig.
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Disassembly and Reassembly 3-4 CRT Removel Fig. 3-5 1. Spread a soft mat on the floor. Place the TV set face down. 2. Remove the 4 nuts mounting the CRT to the front cabinet. 3. Lift the CRT. 4. Caution: Because of the high vacuum and large surface area of the picture tube, be careful while handling it: (1) Always lift the picture tube by grasping it firmly around the faceplate, (2) Never lift the tube by its neck. (3) Do not scratch the picture tube or apply excessive pressure.
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Alignment and Adjustments 4. Alignment and Adjustments 4-1 Service Mode Adjustments 4-1-1 Service Mode Menus Since there are no VRs in the K15A chassis, all adjustments after parts replacement must be done in the Service Mode. Service Mode adjustments are necessary when either the EEPROM (IC902) or the CRT is replaced.
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Alignment and Adjustments 4-1-3 Adjustment in Option Mode 4-1-4 Service Mode Adjustments This adjustment is necessary whenever the EEPROM is replaced. Input data (as marked on the back cabinet). ADJUSTMENT PATTERN OPTION RESET Select “SET OPTION” by pressing the Channel ▼ key twice. ADJUSTMENT PATTERN OPTION RESET Press MENU to go back to the factory mode. ADJUSTMENT PATTERN OPTION RESET Press volume + key. POWER OFF 2. Refer to 4-2 for other adjustments.
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Alignment and Adjustments 4-2 Alignment and Adjustment 4-2-1 General Alignment Instructions 1. Usually, a color TV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as picture height, focus and a horizontal and vertical sync. 2. Observe the picture and check for good back and white details. There should be no objectionable color shading: If color shading is present, demagnetize the receiver.
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Alignment and Adjustments 4-2-8 Sub-Contrast Adjustment 4-2-10 Sub-Color Adjustment 1. Input a gray scale pattern. Use a pattern generator (PM5518). 1. Do sub-color adjustment after the SubContrast and Sub-Tint adjustments. 2. Short D208 to switch off the ABL feed-back. 2. D208 should still be shorted. The ABL should still be switched OFF. 3. Check CN201 R-OUT with an oscilloscope. 4. Set RC, BC, GC data to 0 in the Service Mode. 5. Adjust SCT to 2.40 ± 0.1Vp-p 3. Input a color bar pattern.
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Alignment and Adjustments 4-2-11 White Balance Adjustment 4-2-13 Vertical Size Adjustment 1. Input a lion head pattern. 4-2-11 (A) LOW-LIGHT ADJUSTMENTS 1. Input either a lion head or “pure white” color pattern. 2. After the vertical center adjustment, enter into the service mode. 3. Adjust VA so that the each top and bottom of the screen is 4.0. If the top and bottom values are different, adjust VA so that the sum of the two values is 8.0. 2. Operate the receiver for 30 minutes. 3.
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MEMO 4-6 Samsung Electronics
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Troubleshooting 5. Troubleshooting 5-1 No Power No Power OFF Check LED when AC code is plugged. ON Check IC802. Abnormal Abnormal Normal Check Fuse. Check/Replace IC802, R812, D856. Check IC801* Pin 1 Oscillation. Check and Replace D807 ~D810 Abnormal Abnormal (0 ~ 15V) Check/Replace D806, Q401, Q801, D802, D814* Abnormal (0V) Check/Replace PC802, DZ807 Samsung Electronics Check IC801 Pin 3 B+. Normal (15~20V) Check IC801* Pin 4 Voltage Normal (0.
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Troubleshooting 5-2 No Sound No Sound Normal Abnormal Normal Check Waveform of IC201 Pin 52. Check Waveform of IC601 Pin 1. Abnormal Check Connector CN601 and CN701. Normal Abnormal Check CN601 and CN701 Connector Soldering and A/V PCB. Check Waveform of IC601 and IC602 Pins 4. Normal Ok Abnormal Check Waveform of IC201 Pin 1. Normal Check Voltage of IC601 and IC602 Pin 5. Abnormal Volume Up. O.K Check SIF (L201). Normal (approx. 12V) Abnormal Check Power 12V Line Voltage.
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Troubleshooting 5-3 Horizontal Line Appears Single Horizontal Line Normal (24V) Abnormal Check Waveform of IC201 Pins 22,24. Check 24V-C Voltage. Abnormal Check FBT Pin 2 (24V) Oscillation. NG Normal Check Whether O.K a horizontal line appears in Normal the service mode.. Samsung Electronics Check/Replace FBT. Open NG Check/Replace IC201. Check R409 Open. Check/Replace IC301. Check/Replace R409.
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Troubleshooting 5-4 No Signal No Signal Abnormal Check each tuner terminal voltage. Check voltage line. Normal Check tuner SCL,SDA waveform. Abnormal Normal Check Micom IC901. Check IC201 Pins 7,8 waveform. Check whether AGC and AFTadjustment are normal in the service mode. Normal (2Vp-p) Check IC201 Pin 43 waveform level. Abnormal Check IC201 Pins 19,20, 21 waveform level. 5-4 Replace tuner. Abnormal Check IC201 Pin 47 waveform level. Readjust AGC and AFT.
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Exploded Views & Parts List 6.
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Exploded Views & Parts List 6-2 CT5038G6X/XAP No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 6-2 Code No AA91-10382N AA64-31263Z AA61-40010A AA61-40007A AA64-10187G AA61-60003J AA64-70127F AA64-40085A AA63-50056B AA64-40188A AA64-10050C 3001-001020 6003-001026 AA65-30107A AA60-10050R AA27-20003X AA03-10029W AA27-50004W 3704-001105 AA64-30375B AA42-10001V 6003-001026 AA96-20109C Description ASSY CABINET FRON CABINET FRONT BOSS-WING STOPPER-PCB KNOB POWER SPRING-CS BADGE-BRAND WINDOW-REMOCON
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Electric Parts List 7. Electric Parts List 7-1 CT21D8L6X/XTC Loc. No. Code No. Description ; Specification Remark ASSY PCB MAIN(OPT) 1 * AA94-02665R ASSY PCB MAIN(OPT);CT21D8L6X/XTC,K15A,PH ..2 ..2 ..2 ..2 ...3 ...3 ...3 ...3 ..2 ..2 ...3 ...3 ...3 ...3 ..2 ..2 ..2 ..2 ..2 ..2 ..2 ..2 ...3 ..2 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ....4 ....4 ....4 ...3 ....4 ....4 ....4 ....4 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ....4 ....4 ....4 ....4 ....
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Electric Parts List Loc. No. ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....
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Electric Parts List Loc. No. ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....
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Electric Parts List Loc. No. ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ..2 ..2 ..2 Code No.
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Electric Parts List Loc. No. ..2 ...3 Code No. Description ; Specification Remark Loc. No. Code No.
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Electric Parts List 7-2 CT5038G6X/XAP Loc. No. Code No. Description ; Specification Remark ASSY PCB MAIN(OPT) 1 * AA94-02364L ASSY PCB MAIN(OPT);CT50386X/XAP,KS2A,PAN ..2 ..2 ..2 ..2 ...3 ...3 ...3 ...3 ..2 ..2 ..2 ..2 ..2 ..2 ..2 ..2 ..2 ..2 ...3 ..2 ...3 ...3 ...3 ...3 ...3 ...3 ....4 ....4 ....4 ...3 ....4 ....4 ....4 ....4 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ...
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Electric Parts List Loc. No. ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....
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Electric Parts List Loc. No. ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....
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Electric Parts List Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification ASSY-PCB,A/V FRONT 1 * AA95-90039G ASSY-PCB,A/V FRONT;-,TXH1373X/XAC,K15A,N ..2 ..2 ..2 ..2 ..2 ..2 ..2 ..2 01LOT CE01 CN704* JA703 JE601 RE01 RE02 AA41-10350B 2401-000480 AA39-20070E 3722-000506 3722-000143 2001-000117 2001-000117 0202-000187 PCB-A/V;K1,1,FR-1,51x23x1.6T,-,C-AL;10uF,20%,50V,GP,TP,5x11,5 LEAD CONNECTOR-ASSY;,7P,YBNH025-07,67096 JACK-RCA;2P,3.
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MEMO 7-10 Samsung Electronics
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Block Diagram 8. Block Diagram IC601 TU01* TUNER TELH9-212A SOUND-AMP 2.5W x 1CH LA4425 SAW M1859M DUAL IC201 IC902 1CHIP IF/V/C/D KA2163B EEPROM KS24C020 R.G.B CRT I2C BUS Q401* IC901* H-TR KSC5368 MICOM SZM-354ET EXT IN EXT IN VIDEO AUDIO T444* VERTICAL-AMP KA2131 D807 ~ D810 IC801* SPS CONTROL KA3SO680 KA3S0765 Samsung Electronics F.B.T 14" : FSV14A001 20" : FSV20A001 21" : FSV20A001 T801* SWITCHING TRANS (125V) S:125V,12.5V (12.
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Wiring Diagram 10.
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Schematic Diagrams 11.
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Schematic Diagrams 11-2 MAIN 2/4 TP13 IC201 30PIN TP14 IC201 32PIN TP15 IC201 37PIN TP16 IC201 41PIN TP17 IC201 43PIN TP18 IC201 45PIN TP18 TP16 TP21 TP14 TP20 TP13 TP19 TP15 TP17 TP19 IC201 47PIN TP2 TP12 TP5 TP6 TP10 TP4 TP1 IC201 2 PIN TP2 IC201 4 PIN TP3 IC201 7PIN TP21 IC201 53PIN TP10 IC201 25PIN TP11 IC201 27PIN TP8 IC201 23PIN TP9 IC201 24PIN TP9 TP8 TP3 TP12 IC201 28PIN TP11 TP1 TP7 TP20 IC201 49PIN TP4 IC201 19PIN TP5 IC201 20PIN TP6 IC201 21PIN TP7 IC201 22PIN
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Schematic Diagrams 11-3 MAIN 3/4 TP24 TP24 TP25 IC801 1 PIN TP26 TP25 TP27 TP27 T444 10 PIN TP26 : Power Line Si l Li Samsung Electronics 11-3
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Schematic Diagrams 11-4 MAIN 4/4 : Power Line : Signal Line 11-4 Samsung Electronics