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Samsung CS7202NBX/EIS Service Manual
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Samsung CS7202NBX/EIS Service Manual

Samsung CS7202NBX/EIS Service Manual

Chassis: sct12b
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COLOR TELEVISION RECEIVER
COLOR TELEVISION RECEIVER
Chassis :
SCT12B
Model:
CS7202NBX/EIS
CS6202NX/EIS
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CONTENTS
Disassembly and Reassembly
PCB Layout Diagram

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Summary of Contents for Samsung CS7202NBX/EIS

  • Page 1: Table Of Contents

    COLOR TELEVISION RECEIVER Chassis : SCT12B Model: CS7202NBX/EIS CS6202NX/EIS COLOR TELEVISION RECEIVER CONTENTS Precautions Specifications and IC Data Disassembly and Reassembly Alignment and Adjustments Troubleshooting Electric Parts List System Block Diagrams PCB Layout Diagram Wiring Diagram Schematic Diagrams...
  • Page 2 ELECTRONICS © Samsung Electronics Co., Ltd.SEP. 1997 Printed in Korea 3SCT12B-02-65...

  • Page 3: Precautions

    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...
  • 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 overheat- ing, and correct any potential hazards. Samsung Electronics...
  • Page 5 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...
  • Page 6 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...

  • Page 7: Specifications And Ic Data

    Black stripe, 110° degree A68KVM74X02 (B) SED CPT 28/29 Inch deflection A66EAK71X01 PHILIPS CPT Power Requirements: AC 100~260V, 50/60Hz Antenna Input Impedance: VHF, UHF : Telescopic dipole antenna (75 ohm unbalanced type ) Speaker Impedance 8 ohm, 10W+10W (Semi-Dome) Samsung Electronics...
  • Page 8 TDA8133 CUSTOM REGULATOR (5V, 8V) IC803 SE130N SED CPT ERROR AMP SE140N PHILIPS CPT IC804 KA78R05 REGULATOR (5V) ICT01 SAA5281 P/E TTX-DECODER ICT02 T900580 TTX-CONTROLLER E 2 -PROM ICT04 X24C02 µ-com IC901 Z8933212 E 2 -PROM IC902 AT24C04 Samsung Electronics...
  • Page 9 X24CO4P(Pin 8) TDA8395(Pin 16) TDA4665(Pin 16) TRANSISTOR SAW-FILTER TRANSISTOR G1962 2SD1651 UPC574J K2950M 2SD1650 K9253M KSD5072 KSA815-Y KA33V KSD5071 KSA539-Y KSD1711 E B C TRANSISTOR TRANSISTOR TDA8133 KSR1012 KA7812 KSR1010 KSR2010 E C B Fig.2-1 Semiconductor Base Diagrams Samsung Electronics...
  • Page 10 Memo Memo Samsung Electronics...

  • Page 11: Alignment And Adjustments

    "VOLUME" keys ( Up or Down). The adjustment parameters are listed in the 7. Cancel the Adjustment Mode by re-pressing accompanying table. Select them by pressing the "HIDDEN" or "STATUS" keys. the CHANNEL keys ( , ). Samsung Electronics...
  • Page 12 NTSC EW-TRAPEZIUM 20 ~ 25 0 ~ 127 STEP SECAM-L CONTROLLED OSCILLATOR 75 ~95 0 ~ 63 STEP TELETEXT SUB CONTRAST NOTE : PVS,PVA, PHS, NVS, NVA,NHS parameters must be aligned using both the 50Hz and 60Hz vertical-field rates. Samsung Electronics...
  • Page 13 "HIDDEN" key . Even if the TV power is cut off, the Aging Mode is not cancelled, The patterns are displayed at 5 sec intervals. The AGING mode is cancelled by repressing the "HIDDEN" key. Samsung Electronics...
  • Page 14 MUTE OR POLAND SAFETY (TABLE 1) HYPER TUNER BYTE 0 BIT D1 : AV-1, AV-2 MODE 1. IDENT 1. IDENT ITEM SAA7283 2. SYMBOL 3. S-MODE SAA7283 2.SYMBOL 3. S-MODE TDA9840 DISPLAY CONTROL TDA9840 DISPLAY CONTROL LOGIC TDA9859 TDA9859 HIGH Samsung Electronics...
  • Page 15 ON IN NORMAL MODE 2. MUTE : IF NO RF INPUT 2. MUTE : IF NO RF INPUT TABLE 2 (ZOOM) : MODE AV-1, AV-2 NORMAL ¡ ZOOM ¡ 16 : 9 BYTE0 D5 NORMAL↔ZOOM HIGH NORMAL ¡ŒZOOM Samsung Electronics...
  • Page 16 TABLE 4 (PICTURE STANDARD) : MODE STANDARD MODE DYNAMIC MOVIE MILD CUSTOM BYTE CON/BR/SHA/COL CON/BR/SHA/COL CON/BR/SHA/COL CON/BR/SHA/COL CON/BR/SHA/COL 100/50/50/50 100/50/75/50 90/50/75/50 60/50/50/50 100/50/50/50 90/50/50/50 100/50/50/50 75/55/50/50 60/50/50/50 90/55/25/50 HIGH CON/BR/SHA/COL = CONTRAST / BRIGHT / SHARPNESS / COLOR Samsung Electronics...
  • Page 17 The degaussing coil operates for about 1 second to a distance of about 6 feet before removing after the power is switched ON. If the set has power. been moved or turned in a different direction, disconnect its AC power for at least 10 minutes. Samsung Electronics...
  • Page 18 1. Turn to the ACTIVE channel. 2. Adjust the VR screen for a normal picture is (no blooming or flyback line). 3. Adjust the FOCUS control for well defined scanning lines in the center area of the screen. Samsung Electronics...
  • Page 19 1. Input either a Lion Head or a "pure white" light adjustment. pattern. 2. Warm up the TV for 30 minutes. 3. Check the data in the Service Mode (RG,GG,BG Should be 31, initially) 4. Adjust RG, BG in the Factory Mode. Samsung Electronics...
  • Page 20 3. In Factory Mode, adjust the AFC with the VCO tuning bits (AFA, AFB). The VCO is correct when the AFA Bit is "INSIDE WINDOW " (The AFB Bit is above~below). The AFC output is available on the I C-BUS (used for VCO adjustment and feedback). 4-10 Samsung Electronics...
  • Page 21 4. Adjustment with PVA : Top and Bottom margins of the picture are 4. 5. Adjustment with PSL : Bottom of picture to bottom of screen. 6. Adjust PHS horizontally. Center the picture. Samsung Electronics 4-11...
  • Page 22 Memo Memo 4-12 Samsung Electronics...

  • Page 23: Troubleshooting

    5. Troubleshooting 5-1 No Video (Raster On, No Sound) Measure the Check/Replace Voltage of Each Pin TU101 of TU101 Check IC901 Check/Replace Pins 39, 40 IC901, IC201 See "No Sound" See "No Video" (Video OK) (Sound OK) Samsung Electronics...
  • Page 24 Check IC901 Check/Replace Pin 16 (4V). IC901, DZ903, DZ902 Check IC901 Check/Replace Pin 18 ; Stand-by : 0V IC901(µ-com). Normal : 5V Check/Replace Check IC201, IC201, Q401, Q402. Pin 40 (H-out) Check/Replace Check HIC801, HIC801, Q401, Q402 Q401, Q402. Samsung Electronics...
  • Page 25 Pin 6 (CVBS) IC201 Check IC201 Pins 19, 20, 21 (R/G/B-OUT) Check/Replace Check IC201 IC201, Q203 pin 27 (Y-IN) Check IC501, 502, Check/Replace 503 on the CRT PCB IC501, 502, 503 Check/Replace R411, R527 (HEATER 6.3Vrms) CRT, V999 Samsung Electronics...
  • Page 26 Check IC601 D809, R602, R603, IC601 Pin 3, 13 Check/Replace Check Sound Module IC401, IC804 12V, 5V Check Sound Check/Replace Module SDA, SCL, M601 (Sound-Module) R/L-out Check IC601 Pin Check/Replace 14 15 IC601 Sound output Check/Replace A/V Front assembly. Samsung Electronics...
  • Page 27 Exploded View & Parts List 5. Exploded View & Parts List 5-1 CS7202NBX/EIS Code No Description Specification Q’ty Remark AA64-31157G CABINET-FRONT CS7202NB,S1000 EGB,HIPS AA63-50106A GRILLE-SHEET 7202,S1300,PS,T0.4 S.N.A AA64-50111A DOOR-CONTROL 62.7202,S1000,HIPS,HB,BLK AA64-60238B INLAY-CONTROL 7202,EG,PS,TO.3,BLK S.N.A AA64-70011D BADGE-BRAND AL,SS R2000 25,GOLD,L60 S.N.A...

  • Page 28: Electric Parts List

    Electric Parts List 6. Electric Parts List 6-1 CS7202NBX/EIS AND CS6202NX/EIS Dissimilar Parts Loc. No. Code No. Description ; Specification Remark Loc. No. Code No. Description ; Specification Remark ASSY-PCB,MAIN(OPT) ASSY-CABINET * AA94-10110QASSY-PCB,MAIN(OPT) CS6202NX/EIX,SCT12B,I * AA91-10147NASSY-CABINET,FRONT-,CS6202N,S1000 EGN,H L402 AA27-40001E COIL-HORIZ.WIDTH-,1.5MH,SB-5S820,2UEW0.
  • Page 29 CN10B 3711-002644 CONNECTOR-HEADER;BOX,5P,1R,2.5mm,STRAIGH L104 2701-000215 INDUCTOR-AXIAL;8.2uH,10%,2.5x3.4mm CW901 2503-000158 C-NETWORK;330PFX4,20%,50V,MCCB1H331MX4YT L205 2701-000114 INDUCTOR-AXIAL;10uH,10%,2.5x3.4mm CW902 2503-000156 C-NETWORK;100pFx4,20%,50V L206 2701-000114 INDUCTOR-AXIAL;10uH,10%,2.5x3.4mm D102 0401-000005 DIODE-SWITCHING;1N4148,75V,300mA,DO-35,T L207 3301-000287 CORE-FERRITE BEAD;AA,3.5x1x6mm,1500,2400 D201 0401-000005 DIODE-SWITCHING;1N4148,75V,300mA,DO-35,T L208 3301-000287 CORE-FERRITE BEAD;AA,3.5x1x6mm,1500,2400 D202 0401-000005 DIODE-SWITCHING;1N4148,75V,300mA,DO-35,T L209 2701-000114 INDUCTOR-AXIAL;10uH,10%,2.5x3.4mm Samsung Electronics...
  • Page 30 2001-000281 R-CARBON;100ohm,5%,1/8W,AA,TP,1.8x3.2mm R115 2001-000281 R-CARBON;100ohm,5%,1/8W,AA,TP,1.8x3.2mm R712 2001-000539 R-CARBON;24Kohm,5%,1/8W,AA,TP,1.8x3.2mm R116 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP,- R713 2001-000411 R-CARBON;18KOHM,5%,1/8W,AA,TP,- R117 2001-000995 R-CARBON;820OHM,5%,1/8W,AA,TP,- R714 2001-000780 R-CARBON;470OHM,5%,1/8W,AA,TP,- R118 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP,- R715 2001-000786 R-CARBON;47Kohm,5%,1/8W,AA,TP,1.8x3.2mm R119 2001-000331 R-CARBON;12KOHM,5%,1/8W,AA,TP,- R716 2001-000362 R-CARBON;150ohm,5%,1/8W,AA,TP,1.8x3.2mm R203 2001-000281 R-CARBON;100ohm,5%,1/8W,AA,TP,1.8x3.2mm R717 2001-000362 R-CARBON;150ohm,5%,1/8W,AA,TP,1.8x3.2mm Samsung Electronics...
  • Page 31 2001-000449 R-CARBON;2.2Kohm,5%,1/8W,AA,TP,1.8x3.2m CV03 2305-000665 C-FILM,MPEF;100nF,5%,63V,TP,7.5x4.0x5.0m R939 2001-000449 R-CARBON;2.2Kohm,5%,1/8W,AA,TP,1.8x3.2m CV04 2201-000611 C-CERAMIC,DISC;56pF,5%,50V,CH,TP,6.5x3,5 R940 2001-000281 R-CARBON;100ohm,5%,1/8W,AA,TP,1.8x3.2mm CV05 2301-000232 C-FILM,PEF;3.3nF,5%,50V,TP,8.1x4.5x13mm, R941 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP,- CV06 2201-000144 C-CERAMIC,DISC;100pF,5%,50V,CH,TP,8x3,5 R942 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,- CV07 2201-000614 C-CERAMIC,DISC;56pF,5%,50V,RH,TP,6.5x3.0 R943 2001-000449 R-CARBON;2.2Kohm,5%,1/8W,AA,TP,1.8x3.2m CV08 2201-000980 C-CERAMIC,DISC;30pF,5%,50V,CH,TP,5.0x3.0 R944 2001-000734 R-CARBON;4.7KOHM,5%,1/8W,AA,TP,- Samsung Electronics...
  • Page 32 2002-001009 R-COMPOSITION;2.7Kohm,10%,1/2W,AA,TP,3.7 CA06 2401-001840 C-AL;100uF,20%,16V,GP,TP,6.3x11,5 R523 2002-001009 R-COMPOSITION;2.7Kohm,10%,1/2W,AA,TP,3.7 CA07 2401-001840 C-AL;100uF,20%,16V,GP,TP,6.3x11,5 R525 2002-001006 R-COMPOSITION;4.7KOHM,10%,1/2W,AA,TP,3.7 CN01A AA39-20068E LEAD-CONNECTOR,ASSY;-,YBNH025-08,67096-0 R526 2008-000278 R-FUSIBLE(S);82ohm,5%,2W,AA,TP,3.9x10mm CN05A AA39-20069ALEAD-CONNECTOR,ASSY;-,YBNH025-05,67096-0 R527 2008-000189 R-FUSIBLE;0.47ohm,10%,2W,AA,TP,6x15.5mm CN06A AA39-20499B LEAD CONNECTOR-ASSY;-,YBNH025-04,SMP025- R529 2001-000734 R-CARBON;4.7KOHM,5%,1/8W,AA,TP,- JE01 3722-000143 JACK-PHONE;1P(VER),3.4mm,AG,BLK,NO R530 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP,- Samsung Electronics...
  • Page 33 2007-000468 R-CHIP;1KOHM,5%,1/10W,DA,TP,2012 CJ53 2401-000480 C-AL;10uF,20%,50V,GP,TP,5x11,5 RJ06 2007-000941 R-CHIP;47KOHM,5%,1/10W,DA,TP,2012 CJ54 2401-000444 C-AL;10uF,20%,25V,GP,TP,5x5mm,5mm RJ07 2007-000300 R-CHIP;10KOHM,5%,1/10W,DA,TP,2012 CJ55 2401-000444 C-AL;10uF,20%,25V,GP,TP,5x5mm,5mm RJ08 2007-001071 R-CHIP;6.8KOHM,5%,1/10W,DA,TP,2012 CJ60 2203-000192 C-CERAMIC,CHIP;100nF,+80-20%,50V,Y5V,TP, RJ09 2001-000028 R-CARBON(S);100OHM,5%,1/2W,AA,TP,- CJ61 2203-000192 C-CERAMIC,CHIP;100nF,+80-20%,50V,Y5V,TP, RJ10 2007-000981 R-CHIP;5.6KOHM,5%,1/10W,DA,TP,2012 CJ62 2401-002144 C-AL;47uF,20%,16V,GP,TP,5x11,5 RJ101 2007-000572 R-CHIP;220OHM,5%,1/10W,DA,TP,2012 Samsung Electronics...
  • Page 34 3403-001020 SWITCH-PUSH;250V,5A,DPST,OFF-ON-OFF RJ17 2007-000468 R-CHIP;1KOHM,5%,1/10W,DA,TP,2012 RJ18 2007-000468 R-CHIP;1KOHM,5%,1/10W,DA,TP,2012 RJ20 2007-000941 R-CHIP;47KOHM,5%,1/10W,DA,TP,2012 ASSY-CABINET RJ23 2007-000586 R-CHIP;22KOHM,5%,1/10W,DA,TP,2012 RJ24 2007-000586 R-CHIP;22KOHM,5%,1/10W,DA,TP,2012 RJ25 2007-000030 R-CHIP;560OHM,5%,1/10W,DA,TP,2012 * AA90-70038NASSY-CABINET;7202,CS7202NBX/EIS RJ26 2007-000030 R-CHIP;560OHM,5%,1/10W,DA,TP,2012 RJ27 2007-000586 R-CHIP;22KOHM,5%,1/10W,DA,TP,2012 BACK AA64-30639ACABINET-BACK;-,HIPS,V0,-,-,BLK,-,7202 RJ28 2007-000586 R-CHIP;22KOHM,5%,1/10W,DA,TP,2012 C-CORD AA65-30008ACLAMP-CORD;PE,HB,BLK,-,-,- RJ29 2007-000586 R-CHIP;22KOHM,5%,1/10W,DA,TP,2012 CB+CF AA60-10050T SCREW-TAPPING;RH,+,2S,M4,L20,ZPC(BLK),SW...

  • Page 35: System Block Diagrams

    TO µ-com B + 5V POWER ON IC-MCU STAND-BY TO SOUND B + B + 130/155V (SED/PHILIPS CPT) TO 1 CHIP B + 8V SWITCHING TO TDA4665 STR6709 TRANS TDA9814 TDA9840 POWER-CORD SWITCH MULTI SAA7283 REGULATOR BRIDGE REGULATOR 78R05 DIODE TDA8133 Samsung Electronics...

  • Page 36: Wiring Diagram

    10. Wiring Diagram POWER CORD 7 6 5 4 3 2 8 7 6 5 4 3 SCT2-VIDEO-IN SCT2-VIDEO-IN SCT2-IN/L SCT2-IN/R SCT2-IN/L 130V/155V SCT2-IN/R 200V HEATER L + OUT L - OUT 16.5V R - OUT R + OUT Samsung Electronics 10-1...
  • Page 37 Memo Memo 10-2 Samsung Electronics...

  • Page 38: Schematic Diagrams

    Schematic Diagrams 10. Schematic Diagrams 10-1 PWB-MAIN (One-Chip) Samsung Electronics 12-1...
  • Page 39 Schematic Diagrams 10-2 PWB-MAIN(Power) 12-2 Samsung Electronics...
  • Page 40 Schematic Diagrams (m - com) 10-3 PWB-MAIN Samsung Electronics 12-3...
  • Page 41 Schematic Diagrams 10-4 SOUND-MODULE 12-4 Samsung Electronics...
  • Page 42 Schematic Diagrams 10-5 PWB-MAIN (Audio - AMP) Samsung Electronics 12-5...
  • Page 43 Schematic Diagrams 10-6 PWB-A/V 12-6 Samsung Electronics...
  • Page 44 Schematic Diagrams 10-7 PWB-CRT Samsung Electronics 12-7...
  • Page 45 Schematic Diagrams 10-8 PWB-TTX 12-8 Samsung Electronics...

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