Samsung CK765DWT2X, Service Manual

Page 1: ... TELEVISION RECEIVER CONTENTS Precautions Specifications and IC Data Disassembly and Reassembly Alignment and Adjustments Troubleshooting Exploded View and Parts List Electric Parts List Block Diagram PCB Layout Wiring Diagram Schematic Diagrams 1 2 3 4 5 6 7 8 9 10 11 ...

Page 2: ...ELECTRONICS Samsung Electronics Co Ltd JUL 1998 Printed in Korea 3SCT57C 6501 ...

Page 3: ... metal cabinets screwheads and control shafts The current measured should not exceed 0 5 milliamp Reverse the power plug prongs in the AC outlet and repeat the test Fig 1 1 AC Leakage Test 6 Antenna Cold Check With the unitÕs AC plug disconnected from the AC source connect an electrical jumper across the two AC prongs Connect one lead of the ohmmeter to an AC prong Connect the other lead to the co...

Page 4: ...ppear 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 15 Observe the original lead dress especially near the following areas Antenna wiring sharp edges and especially the AC and high voltage power supplies Always inspect for pinched out of plac...

Page 5: ...ssible conductive parts examples metal panels input terminals and earphone jacks 6 Insulation Checking Procedure Disconnect the power cord from the AC source and turn the power switch ON Connect an insulation resistance meter 500V to the blades of the AC plug The insulation resistance between each blade of the AC plug and accessible conductive parts see above should be greater than 1 megohm 7 Neve...

Page 6: ...ctrical charges that damage ESDs 5 Use only a grounded tip soldering iron when soldering or unsoldering ESDs 6 Use only an anti static solder removal device Many solder removal devices are not rated as Òanti staticÓ these can accumulate sufficient electrical charge to damage ESDs 7 Do not remove a replacement ESD from its protective package until you are ready to install it Most replacement ESDs a...

Page 7: ...Carrier Sound IF Carrier Color Sub Carrier PAL SECAM D K 1 13 21 69 PAL SECAM D K SECAM K1 38 90 32 40 34 47 SECAM K1 PAL D 2 9 13 57 PAL I 38 90 32 90 34 47 MODEL CI CII CX CK CS 25 Inch 28 29 Inch SED CPT PHILIPS CPT SED CPT PHILIPS CPT AC 100 260V 50 60Hz VHF UHF Telescopic dipole antenna 75 ohm unbalanced type 8 ohm 10W 10W SYSTEM PAL I UHF PAL I VHF UHF PAL B G SECAM B G PAL B G D K SECAM B G...

Page 8: ...OR 12V IC501 TDA6101Q RGB DRIVE AMP IC502 TDA6101Q RGB DRIVE AMP IC503 TDA6101Q RGB DRIVE AMP IC504 SPK101T SPOT KILLER IC601 TDA7297 SOUND AMP 10W 10W IC701 TDA9859 SOUND PROCESS IC801 KA3S1265R POWER IC STR IC802 KA7630 CUSTOM REGULATOR 5V 8V SE130N ERROR AMP SED CPT SE140N PHILIPS CPT SAA5261 TTX DECODER ICT04 X24C02 E2 PROM IC901 Z8933112 PSC m com IC902 AT24C04 E2 PROM ICN02 TDA9874H NICAM DE...

Page 9: ... Z8933112PSC Pin 42 X24CO4P Pin 8 TDA8395 Pin 16 TDA9859 Pin 32 TDA9808 Pin 20 REGULATOR KA7812 IN G OUT TRANSISTOR TRANSISTOR 2SD1887Y KSC2073 Y 2SA614 Y B C E E B C KSC815 Y IC KA33V M1956M M9462M SAW FILTER 1 E C B KSR1012 KSR1010 KSR2010 TRANSISTOR IC KA7630 1 TDA9874H OUT KA78R05 IN GND S W K6259K K6278K Fig 2 1 Semiconductor Base Diagrams ...

Page 10: ...MEMO 2 4 Samsung Electronics ...

Page 11: ...Disassembly and Reassembly Samsung Electronics 3 1 3 Disassembly and Reassembly 3 1 Back Cover Removeal Fig 3 1 1 After removing the screws pull the cabinet backwards ...

Page 12: ...g 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 ...

Page 13: ...Disassembly and Reassembly Samsung Electronics 3 3 3 3 Speaker Removal 1 Loosen the screws and remove the speakers SCREW LOOSENING POINT Fig 3 4 ...

Page 14: ...e 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 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 ...

Page 15: ...stment Mode 1 This mode uses the standard remote control The Service Mode is activated 1 by pressing the Display FACTORY service key or 2 by entering the following remote control sequence STAND BY DISPLAY P STD MUTE POWER ON 2 The ÒSERVICE FACTORY Ó message will be displayed The Service Mode has four compo nents Adjustment Test Pattern Option Bytes and Reset 3 Access the Adjustment Mode by pressin...

Page 16: ...N AGC VCO SBT SCT SCR SC RG BG CDL STT VOL LA PSL PVS PVA PHS PEW PEP PEC PET TSC SA NSL FUNCTION AUTO GAIN CONTROL VOLTAGE CONTROLLED OSCILLATOR SUB BRIGHT SUB CONTRAST SUB COLOR S CORRECTION RED DRIVE GAIN BLUE DRIVE GAIN CATHODE DRIVE LEVEL SUB TINT VOLUME CONTROLLED SOUND LEVEL ADJUSTMENT A2 ONLY PAL VERTICAL SLOPE PAL VERTICAL SHIFT PAL VERTICAL AMPLITUDE PAL HORIZONTAL SHIFT PAL EW WIDTH PAL...

Page 17: ...ing servicing or for confirming that the convergence and purity adjustments are correct 2 Access the Test Pattern parameters by pressing a CHANNEL keys while the Service Mode is on The cursor will move to the test pattern Press the VOLUME keys On screen display RED GREEN BLUE ADJUSTMENT DATA RANGE INITIAL OSD ABBREVIATION FUNCTION 15 31 8 31 42 0 6 31 31 31 31 0 15 STEP 0 63 STEP 0 15 STEP 0 63 ST...

Page 18: ...TO ŸPAL ŸSECAM ŸNT4 43 ŸNT3 58 1 0 0 CF x B G L L x PAL SECAM x AUTO 0 1 1 CK CX D K ŸB G AUTO ŸPAL ŸSECAM ŸNT4 43 Ÿ AUTO ŸPAL ŸSECAM ŸNT4 43 Ÿ 0 1 0 CB x B G x PAL x AUTO 0 0 1 CS 1 FOR CHINA B G ŸI ŸD K ŸM Ÿ AUTO Ÿ PAL Ÿ NT4 43 ŸNT3 58 AUTO ŸPAL Ÿ NT4 43 ŸNT3 58 0 0 0 CS 2 B G ŸI ŸD K ŸM Ÿ AUTO ŸPAL ŸSECAM ŸNT4 43 ŸNT3 58 AUTO ŸPAL ŸSECAM ŸNT4 43 ŸNT3 58 B YT E 1 D7 WITHOUT PIP WITH PIP PIP D6 D...

Page 19: ...EN SHIPPED TOINDONESIA STAND_BY LED RED PICTURE ON LED OFF STAND_BY LED OFF PICTURE ON LED RED LED SPECIFICATION WHEN SZM 199EE I S APPLI ED HIGH ONLY WHEN SHIPPED TO POLAND D7 D6 SYSTEM I C SCART 0 0 STEREO NICAM TDA9859 TDA9874 2 SCART 2 INPUT RCA 0 1 STEREO TDA9859 TDA9840 1 0 LI NE STEREO TDA9859 A V SELECT IC 1 1 MONO TDA8844 1 SCART 1 INPUT RCA F E A TU R E S O F S Z M 1 9 9 E E 1 NO TIMER 2...

Page 20: ...lation The degaussing coil operates for about 1 sec ond after the power is switched ON If the set has been moved or turned in a different direc tion disconnect its AC power for at least 10 minutes If the chassis or parts of the cabinet become magnetized poor color purity will result If this happens use an external degaussing coil Slowly move the degaussing coil around the faceplate of the picture ...

Page 21: ... convergence yoke into the CRT and set in as shown in Fig 4 1 4 Input a black and white signal 5 Fully demagnetize the receive by applying an external degaussing coil 6 Turn the CONTRAST and BRIGHTNESS con trols to maximum 7 Loosen the clamp screw holding the yoke Slide the yoke backward or forward to pro vide vertical green belt Fig 4 2 8 Tighten the convergence yoke 9 Slowly move the deflection ...

Page 22: ...st the Brightness and Contrast controls for a well defined picture 4 Adjust the two tab pairs of the 4 pole magnets and change the angle between them Superimpose the red and the blue vertical lines in the center area of the screen 5 Turn the both tabs at the same time keeping the angle constant and superimpose the red and blue horizontal line in the center of the screen 6 Adjust the two tab pairs ...

Page 23: ...m of picture to bottom of screen 6 Adjust PHS horizontally Center the picture 4 4 4 3 9 VCO Adjustment 1 Connect to tuner IF pin 2 Apply an IF input 38 9MHz signal 3 In Factory Mode adjust the AFC with the VCO tuning bits AFA AFB The VCO is correct when the AFA Bit is ÒINSIDE WINDOW Ò The AFB Bit is above below The AFC output is available on the I2C BUS used for VCO adjustment and feedback 4 3 10 ...

Page 24: ...MEMO 4 10 Samsung Electronics ...

Page 25: ...ck Replace IC801 D801 F802 Check Replace IC804 KA7630 DZ905 IC901 Check IC901 Pin 18 Stand by 0V Normal 5V Check Replace IC901 DZ903 DZ902 Check IC901 Pin 16 4V Check Replace IC901 m com Check IC901 Pin 26 H SYNC Check Replace IC201 Q402 Q403 DZ402 IC901 Check Replace IC901 Yes Yes Yes No Check IC804 Pin 8 8V Check Replace IC804 IC201 IC701 ICS02 Yes ...

Page 26: ...Pin 6 CVBS Check Replace IC201 Check IC201 Pin 27 Y IN Check IC201 Pins 19 20 21 R G B out Check Pin 26 0 3V Pin 41 Sand castl wave Replace IC201 DZ402 IC901 Check IC501 502 503 on the CRT PCB Check Replace IC501 502 503 Check Replace R527 HEATER 6 3Vrms CRT V999 Yes Yes Check Replace IC201 R242 ...

Page 27: ...ce Speaker Check Sound Module SDA SCL R L Out Check IC601 Pin Sound output Check Replace D602 F803 IC601 Check Replace ICN02 Yes Yes 1 14 15 2 No Check ICN01 Pin 13 18 Check Replace ICN01 Check Replace ICN02 Check ICN02 B Yes Yes No No Check ICN02 Pin 13 15 Check Replace ICN02 Yes ...

Page 28: ...MEMO 5 4 Samsung Electronics ...

Page 29: ...Exploded View Parts List Samsung Electronics 7 1 7 Exploded View Parts List 7 1 CS765DWT2X BWT ...

Page 30: ...S HB WHT HB 1 S N A 1 9 AA65 30105A CLAMP WIRE NYLON 66 V2 NTR 15MM ALL MODE 2 S N A 1 10 AA64 40480A INDICATOR LED 765D ABS CLR 1 1 11 AA64 10741A KNOB CONTROL 765D G3676 ABS HB HI GRY 1 1 12 6002 000514 SCREW TAPPING KC CF RH 2 M4 L15 ZPC BLK SWR 1 S N A 1 13 AA61 40010A BOSS WING HIPS HB NTR 1 S N A 2 AA03 10029B CRT COLOR A70QBZ791X001 B 500mG 29 1 2 1 3001 000280 SPEAKER 5W 16ohm 90dB 150Hz 4...

Page 31: ...LC AXIAL 100nF 80 20 50V Y5P C606 2301 000201 C FILM PEF 2 2nF 5 50V TP 7 4x3 9x13mm C226 2401 000480 C AL 10uF 20 50V GP TP 5x11 5 C607 2401 001998 C AL 1000uF 20 25V GP TP 10x20 5mm C227 2201 000611 56pF 5 50V CH TP 6 5x3 5 C702 2401 001495 C AL 47uF 20 16V GP 5x11mm 5mm TP C228 2201 000144 C CERAMIC DISC 100pF 5 50V CH TP 8x3 5 C703 2201 000487 C CERAMIC DISC 33pF 5 50V SL TP 5x3 5m C229 2305 0...

Page 32: ...ODE ZENER MTZ9 1B 9 1V 8 57 9 01V 500m C908 2202 002037 C CERAMIC MLC AXIAL 100nF 80 20 50V Y5P DZ204 0403 000563 DIODE ZENER MTZ9 1B 9 1V 8 57 9 01V 500m C909 2202 002037 C CERAMIC MLC AXIAL 100nF 80 20 50V Y5P DZ301 0403 000660 DIODE ZENER MTZ22A 22V 20 15 21 2V 500mW C910 2202 000796 C CERAMIC MLC AXIAL UP050 B102KB INF 10 DZ302 0403 000700 DIODE ZENER TZP33A 33V 31 35V 1W DO 41 T C911 2202 000...

Page 33: ...226 2001 000793 R CARBON 47ohm 5 1 8W AA TP 1 8x3 2mm L208 2701 000142 INDUCTOR AXIAL 1uH 10 2 5x3 4mm R228 2001 001062 R CARBON S 10Mohm 5 1 2W AA TP 2 4x6 4 L301 2701 001040 INDUCTOR AXIAL 10uH 10 14x4 5mm R230 2001 000429 R CARBON 1Kohm 5 1 8W AA TP 1 8x3 2mm L302 2701 001040 INDUCTOR AXIAL 10uH 10 14x4 5mm R233 2001 000780 R CARBON 470ohm 5 1 8W AA TP 1 8x3 2mm L303 2701 000114 INDUCTOR AXIAL ...

Page 34: ...m 5 1 8W AA TP 1 8x3 2mm R902 2001 000290 R CARBON 10Kohm 5 1 8W AA TP 1 8x3 2mm R705 2001 000281 R CARBON 100ohm 5 1 8W AA TP 1 8x3 2mm R903 2001 000066 R CARBON S 10Kohm 5 1 2W AA TP 2 4x6 4 R706 2001 000281 R CARBON 100ohm 5 1 8W AA TP 1 8x3 2mm R904 2004 000218 R METAL 10Kohm 1 1 8W AA TP 1 8x3 2mm R707 2001 000515 R CARBON 220ohm 5 1 8W AA TP 1 8x3 2mm R905 2004 000218 R METAL 10Kohm 1 1 8W A...

Page 35: ...M T401 AA26 50001R TRANS HORIZ DRIVE 80MH 580UH 4UH G11A CV15 2201 000604 C CERAMIC DISC 56pF 100 0 500V SL TP 7 T444 AA26 30005C TRANS FLYBACK FTH 29A013 S 29 130V CV16 2401 000395 C AL 10uF 20 160V GP TP 10x12 5mm T801 AA26 20007R TRANS SWITCHING 90V 260VAC 135V 15V 12 CV17 2201 000441 C CERAMIC DISC 3 3nF 10 500V Y5P TP 10x TU101 AA40 10003K TUNER V S TELE1 002 PAL B G 105CH CV18 2201 000441 C ...

Page 36: ... 10 1 2W AA TP 3 7 CA106 2301 000235 C FILM PEF 3 9nF 5 50V TP 6 5x3 0x5 5mm R523 2002 001009 R COMPOSITION 2 7Kohm 10 1 2W AA TP 3 7 CA107 2301 000530 C FILM PEF 100nF 5 100V TP 11 5x12 5x6 R525 2002 001006 R COMPOSITION 4 7KOHM 10 1 2W AA TP 3 7 CA108 2301 000201 C FILM PEF 2 2nF 5 50V TP 7 4x3 9x13mm R526 2008 000278 R FUSIBLE S 82ohm 5 2W AA TP 3 9x10mm CA109 2401 000660 C AL 2 2uF 20 50V GP T...

Page 37: ... SECAM QT01 0501 000389 TR SMALL SIGNAL KSC815 NPN 400mW TO 92 T QT02 0501 000389 TR SMALL SIGNAL KSC815 NPN 400mW TO 92 T AA95 90027X ASSY PCB SECAM 761B SCT57A PAL QT03 0501 000389 TR SMALL SIGNAL KSC815 NPN 400mW TO 92 T QT04 0501 000389 TR SMALL SIGNAL KSC815 NPN 400mW TO 92 T CNS01 3711 002707 CONNECTOR HEADER NOWALL 9P 1R 2 5mm ANGL QT05 0501 000280 TR SMALL SIGNAL KSA1182 PNP 150mW SOT 23 C...

Page 38: ...M4 L15 ZPC BLK SWR S N A IND CF6002 000514 SCREW TAPPING RH 2 M4 L15 ZPC BLK SWR S N A KC CF 6002 000514 SCREW TAPPING RH 2 M4 L15 ZPC BLK SWR S N A SPK CF 6002 000514 SCREW TAPPING RH 2 M4 L15 ZPC BLK SWR S N A CRT CF AA60 10050R SCREW ASSY WC HH M5 L31 5 SWRCH18A ZPC S N A CB CF AA60 10050T SCREW TAPPING RH 2S M4 L20 ZPC BLK SW S N A BOSS W AA61 40010A BOSS WING HIPS HB NTR S N A STOPP AA61 4005...

Page 39: ...8 Block Diagram Block Diagram Samsung Electronics 8 1 PAL A2 NICAM A2 PIPTTX MODEL ...

Page 40: ...5 136 DZ401 136 105 DZ402 77 109 DZ601 230 209 DZ602 228 209 DZ603 225 209 DZ604 223 209 DZ701 53 149 DZ702 58 149 DZ703 63 149 DZ704 43 137 DZ705 68 149 DZ801 236 27 DZ802 228 34 DZ803 171 124 DZ804 231 34 DZ805 173 85 DZ807 168 122 DZ901 303 123 DZ902 300 183 DZ903 303 139 DZ904 303 144 DZ905 249 226 DZ906 321 82 DZX01 39 13 IC201 105 224 IC301 152 135 IC401 90 139 IC601 221 227 IC701 17 190 IC8...

Page 41: ... D512 101 84 D513 104 98 D514 38 64 D515 104 124 DV01 70 20 DV02 68 7 DV03 75 43 DV04 96 41 DV05 55 36 DV06 58 28 DV07 32 14 DV08 37 6 DVZ01 10 30 DZ501 104 141 DZ502 94 120 DZ503 20 149 DZ504 27 64 DZ505 27 76 DZ506 48 147 DZ507 18 47 IC501 24 134 IC502 21 77 IC503 104 138 IC504 104 61 QV01 8 13 QV02 15 8 QV03 14 24 QV04 44 29 QV05 50 7 QV06 48 40 QV07 55 7 QV08 88 37 QV09 88 19 QV10 24 8 QV11 25...

Page 42: ...gram Samsung Electronics 10 1 CRT ANODE R L ASSY PWB MAIN SPEAKER FBT ASSY PWB CRT CN701 CN07A DY MICOM CN602 T U N E R CN502 TDA8375 N3 CN501 RCA JACK A2 NICAM MODULE CNA01 CN05A CN06A ASS Y SIDE A V MASTER S W V1 V2 H1 H2 CN08A ...

Page 43: ...h h h h h H h h h h h h h h h h h h h h h g h h e g h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h g g he g g he g g he g g h g g he g g he g g he g g he g g h g g he g g e 6Xe e e J he g e I X e eW g e eN 1 3 L J 5 e7 he g e e N 1 7 H e g e e 3 5f he g e e N Hf g e eJ 5 e3 5 f h g e O Y eN H f g e 0Yf g he g 3 g V he g N g he g g he g g h g g he g g he g g he g g he g g f e...

Page 44: ... N g Lg g g N g W f N g he he Lg N f he hf g g 31g g g g g g e g 31g 3Lg g 3 H f g 31g f he hf g g N g g g g g g g N g N1g g N g g N g f he hf g g g g g g g g e g g g g g g g f he hf g g L L e J J g g g g L L e J J g g g g L L e J J g g f he e f e f f e f e e e f e f e e e e e f e f e e e f e f f e f e f e f f e f e e e f e f e e e f e f e e e f e f f e f e f e f f e f e e e e f e e e e e f e f e ...

Page 45: ...3 f e f f e f 5f e e 5f e e f e e 5f 31 e g 5 e 3 g e 31e g e e 5 f e hf e N f e e J f eJ f Hf e e Hf e e e e Hf N eJ5 g H eJ N g e N e g e e H f e hf e 5 f e J e 75 f e7 J L e f e e f e e e e g e7H g e75 g e e g e e g e hf e H e e H e R1 e e e e e L e e e H J5 hf e g e hf e e hf e e N e e 5 e e e e e 31 e e e 7H e g e e e hf e e L e H J5 eJ e L e N e e Le eJ J e L J hf e e 31 e 7H e75 e 31 e e e ...

Page 46: ...5 eI X 3 5 e W Y e e 3 5 N e 7 Hg 1 he e3 V KO Y e N 1 N H 7 Yf3 e 5 3 5 N H 3 e 5eJ 5 e 6K 5 he eV 5eV4 0Ye f V4 0Y N 0Y e e V4 0Ye7 H e V4 0Y he V Y M e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f e f...

Page 47: ...hf hf hf hf hf hf hf hf hf hf hf h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h hf h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h hf hf h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h hf h h h h h h h h h h h h h h h h h h h h h h h h h h h h...

Page 48: ...Schematic Diagrams 11 6 Samsung Electronics 11 6 SOUND MODULE A2 NICAM Power Line Signal Line ...

Page 49: ... e f e f e f e f e f e f e f e f e f e f e f e e f e f e f e f e f e f e f e f hN hN hN h h h h h h h h h h h h h h h h h h h h h h h h h h h h 3L h 3L h 3L g h N1 h N1 h N1 he he he J5 he J5 he J5 he 7H he 7H he 7H he g hf hf hf g hf hf hf hf hf hf hf hf hf hf hf hf g hf hf hf g hf hf hf hf hf hf hf hf hf hf hf hf g hf hf hf g hf hf hf hf hf hf hf hf hf hf hf hf g hf hf hf g hf hf hf hf hf hf hf ...

Page 50: ...Schematic Diagrams 11 8 Samsung Electronics 11 8 SECAM MODULE 11 9 PWB A V Power Line Signal Line ...

Page 51: ...Schematic Diagrams Samsung Electronics 11 9 11 10 PIPTTX Power Line Signal Line ...

Page 52: ...Schematic Diagrams 11 10 Samsung Electronics 11 11 PIP ONLY Power Line Signal Line ...

Page 53: ...Schematic Diagrams Samsung Electronics 11 11 11 12 TTX ONLY Power Line Signal Line ...

Page 54: ...Schematic Diagrams 11 12 Samsung Electronics 11 13 A2 STEREO Power Line Signal Line ...

Page 55: ...Schematic Diagrams Samsung Electronics 11 13 11 14 TTX MODULE Power Line Signal Line ...