Samsung CFT24907X/SMS Service Manual
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Samsung CFT24907X/SMS Service Manual

Samsung CFT24907X/SMS Service Manual

Color television receiver
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COLOR TELEVISION RECEIVER
COLOR TELEVISION RECEIVER
Chassis :
KS2A(N) (REV.2)
Model :
CFT24907X/SMS
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CONTENTS

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Summary of Contents for Samsung CFT24907X/SMS

  • Page 1: Table Of Contents

    COLOR TELEVISION RECEIVER Chassis : KS2A(N) (REV.2) Model : CFT24907X/SMS 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...
  • Page 2 ELECTRONICS © Samsung Electronics Co., Ltd. MAY. 2002 Printed in Korea AA82-00036A...

  • Page 3: Precautions

    Heed the high voltage limits. These include not exceed 0.5 milliamp. Reverse the power- the X–ray Protection Specifications Label, and plug prongs in the AC outlet and repeat the the Product Safety and X-ray Warning Note on test. the service data schematic. Samsung Electronics...
  • Page 4 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 overheating, and correct any potential hazards. Samsung Electronics...

  • Page 5: Servicing Precautions

    Make sure that the portion around 8. Always connect a test instrument’s ground the serviced part has not been damaged. lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last. Samsung Electronics...
  • Page 6 These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Samsung Electronics...

  • Page 7: Reference Information

    Millimeter Hour Millisecond Inches Per Second Millivolt Kilowatt-hour Nanofarad Ω Kilogram Kilohertz Picofarad kΩ Kilohm Pound Kilometer Revolutions Per Minute km/h Kilometer Per Hour Revolutions Per Second Kilovolt Second (Time) Kilovolt-ampere Volt Kilowatt Volt-ampere Liter Watt Megahertz Watt-hour Samsung Electronics...
  • Page 8 Fail Safe Voltage Controlled Oscillator Ground VCXO Voltage Controlled Crystal Oscillator Green-Y Very High Frequency High Video Intermediate Frequency High-Frequency Variable Resistor HI-FI High Fidelity Video Tape Recorder Inductance-Capacitance VTVM Vacuum Tube Voltmeter Integrated Circuit Transistor Intermediate Frequency Samsung Electronics...
  • Page 9 IC803 KA78R08 8V Controlled Regulator IC903 KA78RM33 3.3V Regulator IC904 KIA7025AP MICOM Reset IC Q909 2N7000 IIC Level Shifter Q910 TAFC-H0051 TU01 Main Tuner with IF Block D813 FML-G12S Rectifier Diode IC501 STV5109 Video Output AMP R.G.B Drive Samsung Electronics...
  • Page 10 Reference Information Table 2-3-1 VIDEO IC REMARK FUNCTION SPEC Basic 1H Comb Filter VDP3108B 2H Comb Filter, DVD Input VDP3130Y Table 2-3-2 SOUND AMP SPEC FUNCTION REMARK TDA7297 7W x 2CH, 10W x 2CH Samsung Electronics...

  • Page 11: Specifications

    5W x 2CH Sound Option Vitual Dolby Effect Turbo Sound Pseudo Stereo RCA Input Front Option S-VHS (AV2) Head-Phone Jacks 2 AV Input Back Option DVD Input(YPbPr) Option AV2 Monitor Audio Output Option S-VHS Specifications are subject to change. Samsung Electronics...
  • Page 12 MEMO Samsung Electronics...

  • Page 13: Alignment And Adjustments

    2. Turn on the TV. Set the Brightness and Contrast controls to minimum (zero beam current). 3. Adjust the Brightness and contrast controls to both extremes. Ensure that the high voltage does not exceed 30 KV under any conditions. Samsung Electronics...

  • Page 14: Focus Adjustment

    25V 1.0R/SDI 23V 1.3R/SDI 5. Turn the SCREEN VR until “MRCR G B” and “MRWDG” are green and those value are about 100. (The incorrect SCREEN Voltage may result that “MRCR G B” and “MRWDG” should be red) Samsung Electronics...

  • Page 15: White Balance Adjustment

    7. Adjust CA-100 so that the final adjustment value can be fixed. 8. Use the Channel Up/Down ( ) buttons to move the cursor on the adjustment modes. 9. Use the Volume +/- buttons to change the adjustment value. Samsung Electronics...
  • Page 16 PROM (sometimes MICOM) is replaced, the adjustment values should be controlled. - After the Service adjustment is completed, Do not select “Reset” in the service mode menu. (After above procedure is done, power is on initially and the “Plug and Play” will be operated.) Samsung Electronics...
  • Page 17 SUB BRIGHT Control SUB CONTRAST Control SUB COLOR SUB TINT BCL THRESHOLD BCLGAIN BCL TIME DVD SUB TINT N. YC DELAY Samsung Electronics INCH 25" STEREO 27V 1.3R 23V 1.3R 25V 1R 27V 1R 20V 1R 15" FLAT 21" STEREO TXK2550...
  • Page 18 Alignment and Adjustments 4-8-2(B) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT) V Shift V Amp V Slope V SC H Trapizium H EW H Symmetry H Parabola H Corner H Shift Samsung Electronics...
  • Page 19 CL25M6W TXK2754 TXK2566 TXK2067 TXK2567 CL663BW VIDEO ADJUST2 INIT B STRETCH-BTHR B DTRETCH-BTLT B STERTCH-BAM CORING NTSC COMB FILTER RGB BRIGHT RG B CONTRAST EHT TIME EHT VERTICAL DTI CORING DTI GAIN DTI BAND EHT OFFSET EHT HORIZONTAL Samsung Electronics...
  • Page 20 VELOCITY DELAY VELOCITY CORING VELOCITY CORING ACC-REF ACCR INCH 21" STEREO 25" STEREO 27V 1.3R 25V 1R 27V 1R 20V 1R 15" FLAT 23V 1.3R Samsung Electronics TXK2550 TXK2060 TXK2554 TXK2750 CL25M6W Model CL21S8W7X TXK2066 CT-15A8 CL25D4W TXK2767 TXK2566 TXK2754...
  • Page 21 TXK2754 TXK2767 CL25D4W TXK2066 CT-15A8 CL21S8W7X CL25M6P TXK2067 TXK2566 TXK2754 CL25M6P TXK2567 TXK2067 TXK2567 CL663BW G2 Adjust CL663BW MRC R G B G2 Adjust MRWDG MRC R G B MRC R G B IBRM MRWDG WDRV IBRM WDRV Samsung Electronics...
  • Page 22 -13(FIX) -13(FIX) H SYMMETRY H SYMMETRY H CORNER H CORNER Control 69(FIX) 69(FIX) 69(FIX) 69(FIX) H SHIFT Control PIP CONTRAST PIP CONTRAST PIP TINT PIP TINT PIP PAL V.POS PIP NTSC V.POS PIP NTSC V.POS PIP H.POS 4-10 Samsung Electronics...
  • Page 23 OSD-B OSD-G OSD-R Scart1 Ident VDD 2.5V Scart2 Ident Key 1 X-TAL Out H-Sync X-TAL In V-Sync MICOM Reset Key 3 N.C. Key 2 N.C. X-Ray Protect VDD 3.3V IR Input Stand-By LED N.C. Time LED Relay Samsung Electronics 4-11...
  • Page 24 Scart1 Ident SC1-ID Scart2 Ident SC2-ID Key1 Input Key1 H-Sync Horizontal Sync Input Vertical Sync Input V-Sync Key3 Key3 Input Key2 Key2 Input X-Ray Protection X-Ray IR-In Remocon Signal Input STD-LED LED Drive Output(Red) TIM-LED LED Drive Output(Green) 4-12 Samsung Electronics...
  • Page 25 Fast Blank/Half Contrast Output OSD-B CORE VDD 2.5V VDD 3.3V PX.Y When The Caption Function Adopted, Used. PX.Y N.C. Not Used (Programmed Gound Level) N.C. Sound Amp Mute S-Mute High Picture On/Off Control Power Not Used (Programmed Gound Level) N.C. Samsung Electronics 4-13...
  • Page 26 MEMO 4-14 Samsung Electronics...

  • Page 27: Troubleshooting

    IC902 IC803, 805 IC804 Replace Check Normal Abnormal Check Q401 and IC902 Normal IC803 Horizontal Circuit Check FBT and B+(130V) Check Abnormal Check the resistance of SCL, SDA Line FD803 Replace FD803 Normal Check IC801, D801 FUSE Samsung Electronics...
  • Page 28 CRT and FBT Abnormal R.G.B Signal Output from IC201 Check Normal the signal output from IC201 Pin Check Normal Q202, Q203, Q204, Abnormal Q207, Q209, Q213, Q206, Q208, Q210 Check / Replace Check tuner B+ and Main CVBS IC201 Samsung Electronics...

  • Page 29: No Sound

    4 12 Check Normal Check the signal input IC602 B+ to IC601 Pin Abnormal Normal Abnormal Normal Check Check/Replace Replace Check IC601 B+ the resistance tuner B+ and SIF IC602 of FD802 Abnormal Check/Replace Check IC601 B+ Line (8V) Samsung Electronics...
  • Page 30 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...

  • Page 31: Exploded Views And Parts List

    Exploded View & Parts List 6. Exploded View & Parts List 6-1 CFT24907X/SMS Code No Description;Specification Q’ty Remark AA64-02885A CABINET-FRONT;KS2A,25A6,MOLD,SAM’S AA64-02886A DOOR-A/V;KS2A,25A6,ABS,HB,SAM’S DOOR AA64-02915A INLAY-A/V;PS,SHEET,T0.3 GRAY,25A6 IN/AV AA64-02286A BADGE-BRAND;AKAI,AL FORGING,-,-,L65,-,SI BADGE AA61-00343A SPRING-CS;-,SUS304,-,-,-,-,0.4,0D6,H12,N SPRING AA64-02888A KNOB POWER;25A6,NO-SILK,ABS AA64-00241C WINDOW-REMOCON;-,25A6,W971,PC,VO,VIOLET, AA95-00759A...

  • Page 32: Electrical Parts List

    1203-000284 IC-POSI.FIXEDREG.;7806,TO-220, D808 0402-000132 DIODE-RECTIFIER;1N4004,400V,1A,DO-41 6003-000335 SCREW-TAPTITE;RH,+,2S,M3,L8,ZPC(YEL),SWR D810 0402-000132 DIODE-RECTIFIER;1N4004,400V,1A,DO-41 AA62-00045A HEAT SINK-PS;-,-,T1.0,-,-,DREAM,-,-,-,-, D811 0402-000132 DIODE-RECTIFIER;1N4004,400V,1A,DO-41 DH01 AA96-00275A ASSY H/S;-,COMPLEX,AA62-00051A,KSD5703, D907 0402-000132 DIODE-RECTIFIER;1N4004,400V,1A,DO-41 0205-000129 GREASE-SILICON;SC102,JAPAN DZ201 0403-000508 DIODE-ZENER;MTZJ5.6B,5.6V,5.45-5.73V,500 0402-001296 DIODE-RECTIFIER;FMP-3FU,1500V,5A,T0-3PF DZ203 0403-000508 DIODE-ZENER;MTZJ5.6B,5.6V,5.45-5.73V,500 0502-001136 TR-POWER;KSD5703,NPN,70W,TO-3PF,ST,8- DZ204 0403-000508 DIODE-ZENER;MTZJ5.6B,5.6V,5.45-5.73V,500 Samsung Electronics...
  • Page 33 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm R934 2001-000003 R-CARBON;330OHM,5%,1/8W,AA,TP, R235 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm R245 2001-000005 R-CARBON;390OHM,5%,1/8W,AA,TP, R252 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm R250 2001-000005 R-CARBON;390OHM,5%,1/8W,AA,TP, R603 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm R255 2001-000005 R-CARBON;390OHM,5%,1/8W,AA,TP, R607 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm R214 2001-000008 R-CARBON;15KOHM,5%,1/8W,AA,TP,1.8X3.2MM R608 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm R303 2001-000016 R-CARBON(S);1OHM,5%,1/2W,AA,TP R910 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm Samsung Electronics...
  • Page 34 2201-000556 C-CERAMIC,DISC;470PF,10%,500V, R925 2001-001035 R-CARBON ;91ohm,5%,1/8W,AA,TP,1.8x3.2mm C650 2201-000558 C-CERAMIC,DISC;470PF,10%,50V,Y R415 2001-001054 R-CARBON(S);1.6KOHM,5%,1/2W,AB,TP,2.4X6. C817 2201-000599 C-CERAMIC,DISC;560PF,10%,500V, R524 2001-001062 R-CARBON(S);10MOHM,5%,1/2W,AA, C819 2201-000599 C-CERAMIC,DISC;560PF,10%,500V, R826 2001-001072 R-CARBON(S);12ohm,5%,1/2W,AA,TP,2.4x6.4m C822 2201-000599 C-CERAMIC,DISC;560PF,10%,500V, R811 2001-001078 R-CARBON(S);15KOHM,5%,1/2W,AA, C843 2201-000681 C-CERAMIC,DISC;82PF,5%,50V,SL,4X3.5MM,5M R428 2001-001106 R-CARBON(S);220KOHM,5%,1/2W,AA C509 2201-000723 C-CERAMIC,DISC;4.7nF,20%,3KV,Y5U,TP,16x5 Samsung Electronics...
  • Page 35 2305-000665 C-FILM;104J, 60V,5MM TAPING L301 2701-000114 INDUCTOR-AXIAL;10UH,10%,2.5X3. C829 2305-000665 C-FILM;104J, 60V,5MM TAPING L406 2701-000114 INDUCTOR-AXIAL;10UH,10%,2.5X3. C831 2305-000665 C-FILM;104J, 60V,5MM TAPING L602 2701-000114 INDUCTOR-AXIAL;10UH,10%,2.5X3. C837 2305-000665 C-FILM;104J, 60V,5MM TAPING L603 2701-000114 INDUCTOR-AXIAL;10UH,10%,2.5X3. C839 2305-000665 C-FILM;104J, 60V,5MM TAPING L906 2701-000114 INDUCTOR-AXIAL;10UH,10%,2.5X3. Samsung Electronics...
  • Page 36 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J212 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J602 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J213 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J603 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J214 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J605 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J215 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J606 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J216 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J608 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J217 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A J609 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A Samsung Electronics...
  • Page 37 AA60-40011A EYELET;-,ID2.0,OD2.8,-,-,BST J926 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A EY806 AA60-40011A EYELET;-,ID2.0,OD2.8,-,-,BST J927 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A EY809 AA60-40011A EYELET;-,ID2.0,OD2.8,-,-,BST J928 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A EY810 AA60-40011A EYELET;-,ID2.0,OD2.8,-,-,BST J929 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A EY811 AA60-40011A EYELET;-,ID2.0,OD2.8,-,-,BST J930 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A EY812 AA60-40011A EYELET;-,ID2.0,OD2.8,-,-,BST J931 3812-000219 JUMPER-WIRE-SO,COPPER;TA0.6SN/52M/M(A EY815 AA60-40011A EYELET;-,ID2.0,OD2.8,-,-,BST Samsung Electronics...
  • Page 38 AA39-20068E LEAD CONNECTOR-ASSY;-,YBNH025-08,67096-0 RR05S 2001-001196 R-CARBON(S);9.1KOHM,5%,1/2W,AA,TP,2.4X6. CN05A AA39-20069D LEAD-CONNECTOR,ASSY;-,YBNH025- RR06S 2001-000977 R-CARBON;8.2Kohm,5%,1/8W,AA,TP,1.8x3.2m 00VER AA41-00320A PCB-AV FRONT;CL568B,FR-1,1L,A,1.6T,245x2 RP801S 2002-001010 R-COMPOSITION;1.8MOHM,5%,1/2W,AA,TP,3.7X BAND-W AA63-10002A BAND-TIE;-,NYLON66V2,-,-,L100,NTR,-,- RR03S 2001-000009 R-CARBON;20KOHM,5%,1/8W,AA,TP, BAND/W AA63-10002A BAND-TIE;-,NYLON66V2,-,-,L100,NTR,-,- L/IND AA68-00524A LABEL-INDICATOR;A/P 90(G),CXJ1352X/XAA,U L/WARN AA68-01618A LABEL-WARNING;WHTPAPER100 ASSY-COVER/FRONT BADGE AA64-02286A BADGE-BRAND;AKAI,AL FORGING,-,-,L65,-,SI Samsung Electronics...
  • Page 39 AA27-20004U COIL-DEGAUSSING;-,26,14.0ohm,55T,L2830,E A/ACCE AA92-05255A ASSY-ACCESSORY;KS2A,25,SAM’S ASSY-BOX AC-TAP 0203-001279 TAPE-OPP MASKING;#232,T0.14,W15,L50000,Y I/B2 AA68-02413A MANUAL-USERS;KS2A,ENG,W/P100,USA,SMS A/BOX AA92-05375A ASSY-BOX;KS2A,25,SAM’S CLUB AA68-02414A MANUAL-USERS;KS2A,SPA,W/P100,USA,SMS BAG-PE AA69-01195A BAG PE;CL29A6W8X,HDPET0.012,93/4X151 L/BARC AA68-01621A LABEL-BARCORD;EDP60POUNDSSMOOT C/WARR AA68-02426A CARD-WARRANY;1PAGE,SPA,SAM’S CLUB AA69-01752A PACKING-CASE;CT25A6,KRAFT-LINER C/WARR AA68-02427A CARD-WARRANY;1PAGE,ENG,SAM’S CLUB AA59-10111J REMOCON;TM59,SZM368ET2,G3174A,25,NO Samsung Electronics...

  • Page 40: Block Diagrams

    Schematic Diagrams 8. Block Diagrams 8-1 Power Diagram Samsung Electronics...
  • Page 41 Schematic Diagrams 8-2 Block Diagram Samsung Electronics...

  • Page 42: Wiring Diagram

    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...
  • Page 43 MEMO Samsung Electronics...

  • Page 44: Schematic Diagrams

    Schematic Diagrams 10. Schematic Diagrams 10-1 MAIN 1/4 (WITH EW) TP07 TP01 TP09 TP08 TP02 TP09 TP03 TP08 TP01 TP06 TP04 TP07 TP04 TP05 TP03 TP05 TP02 TP06 : Power Line : Signal Line Samsung Electronics 10-1...
  • Page 45 Schematic Diagrams 10-2 MAIN 2/4 TP10 TP11 TP11 TP12 TP12 TP13 TP14 TP10 TP13 TP14 : Power Line : Signal Line 10-2 Samsung Electronics...
  • Page 46 Schematic Diagrams 10-3 MAIN 3/4 TP21 TP15 TP22 TP16 TP22 TP23 TP17 TP15 TP21 TP17 TP16 TP24 TP18 TP20 TP19 TP18 TP23 TP19 TP24 TP20 : Power Line : Signal Line Samsung Electronics 10-3...
  • Page 47 Schematic Diagrams 10-4 MAIN 4/4 TP31 TP25 TP32 TP26 TP32 TP25 TP33 TP27 TP26 TP31 TP33 TP34 TP28 TP27 TP30 TP28 TP29 TP29 TP30 : Power Line : Signal Line 10-4 Samsung Electronics...

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