Daewoo DTQ-29U1SC Service Manual Download Page 1 | Manualshive

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http : //svc.dwe.co.kr

Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center(http://svc.dwe.co.kr)

S/M No : TCN794NEF0

COLOR TELEVISION

Service Manual

CHASSIS : CN-794N

Model : DTQ-29U1SC

DTQ-29U5SC

Apr. 2003

DTQ-29U1SC

DTQ-29U1SC

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Summary of Contents for DTQ-29U1SC

Page 1: ...mance without notice in the parts list So if you need the latest parts information please refer to PPL Parts Price List in Service Information Center http svc dwe co kr S M No TCN794NEF0 COLOR TELEVIS...

Page 2: ...RAM 13 ELECTRICAL PARTS LIST 17 DIFFERENT PARTS LIST 36 EXPLODE VIEW 37 PRINTED CIRCUIT BOARD 39 IC DESCRIPTION 49 WAVEFORMS 55 TROUBLE SHOOTING GUIDE 58 NO POWER 58 NO PICTURE 59 NO SOUND 60 CH DON T...

Page 3: ...COLOR SETS ALWAYS RE INSTALL THEM 3 IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCU RATE AND RELIABLE HIGH VOLTAGE METER THE CALIBRATION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAIN...

Page 4: ...ust be corrected imme diately The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presence of uninsu lated dangerous voltage that...

Page 5: ...entilation 4 Wall and shelf mounted installations using a commercial mounting kit must follow the factory approved mounting instructions A receiver mounted to a shelf or platform must retain its origi...

Page 6: ...CH13 UHF W 12 W 84 Sound Output 5W 5W Speaker 8 ohm 7W x 2EA Antenna Input Impedance 75 ohm Unbalanced Auxiliary Input Terminal Side Video Audio L R AV2 Rear Video Audio L R AV1 S Video Y Cb Cr Audio...

Page 7: ...6 CIRCUIT BLOCK DIAGRAM...

Page 8: ...tton to turn the TV s menu system on and off 6 DISPLAY Use this button to display the channel numbeer and status 7 INPUT Use this button to select the TV s signal source 8 VIDEO Use this button to dis...

Page 9: ...the red Press the volume up or down button to enter in the service mode you wish to adjust 2 How to memorize the adjusted values in the service mode Must press DISPLAY button the state which the scree...

Page 10: ...84 8 2040 HBSO 6 0 511 S7 BCLTH 185 0 2047 BCLTM 5 0 15 BCLG 5 0 15 BCLTST 0 0 1020 PKINV 0 0 1 BLE 0 0 1 BTLT 2 0 15 BAM 20 0 31 SVG1 20 0 63 SVD1 1 0 7 SVLIM 30 0 127 SVDEL 7 0 15 OSDBR 255 0 511 OS...

Page 11: ...al Position Adjustment Select V POSI item adjust V POSI data value to center the raster properly on the screen 2 ASSEMBLY ADJUSTMENTS 1 SCREEN ADJUSTMENT S2 Enter the service mode and select service a...

Page 12: ...ust service adjustment data of RD GD BD and RB GB BB until a good gray scale with normal whites is obtained ALIGNMENT INSTRUCTIONS Press the DISPLAY button to memorize the data 5 DIGITAL PRESET D P AD...

Page 13: ...lue to obtain normal brightness level Press the DISPLAY button to memorize the data CONTRAST Fixed value 8 TINT Fixed value 170 COLOR Fixed value 0 6 FACTORY OUTGOING MODE S12 FACT If you select the S...

Page 14: ...13 SCHEMATIC DIAGRAM...

Page 15: ...TAPPTITE TT2 TRS 4X16 MFZN BK 23 M221C 7178301212 SCREW TAPPTITE TT2 WAS 3X12 MFZN BK 24 M541 4855415800 SPEC PLATE 150ART P E FILM C TV 25 M686 4856812001 TIE CABLE NYLON66 DA100 26 SP01A 7172401212...

Page 16: ...2KV BUP 7500PF J 61 C409 CMYE2J273J C MYLAR 630V PU 0 027MF J 62 C801 CL1UC3104M C LINE ACROSS WORLD AC250V 0 1UF M R 47 63 C804 CEYD2D681D C ELECTRO 200V FHS 680MF 25X40 64 D419 DRGP30J DIODE RGP30J...

Page 17: ...L801 5PLF30A1 FILTER LINE LF 30A1 108 M682 4856812001 TIE CABLE NYLON66 DA100 109 PWC1 4859907810 CORD POWER AS ME301P TER 2100 110 Q401 TKTC3229 TR KTC3229 111 Q402 PTH2SW7609 HEAT SINK ASS Y T2SD257...

Page 18: ...0 HRFT103JBA R CHIP 1 10 10K OHM J 1608 153 RC311 HRFT363JBA R CHIP 1 10 36K OHM J 1608 154 RC312 HRFT133JBA R CHIP 1 10 13K OHM J 1608 155 RC351 HRFT362JBA R CHIP 1 10 3 6K OHM J 1608 156 RC360 HRFT5...

Page 19: ...0 OHM J 1608 197 RC612 HRFT101JBA R CHIP 1 10 100 OHM J 1608 198 RC613 HRFT101JBA R CHIP 1 10 100 OHM J 1608 199 RC614 HRFT101JBA R CHIP 1 10 100 OHM J 1608 200 RC615 HRFT101JBA R CHIP 1 10 100 OHM J...

Page 20: ...510K OHM J 1608 242 RC785 HRFT101JBA R CHIP 1 10 100 OHM J 1608 243 RC786 HRFT102JBA R CHIP 1 10 1K OHM J 1608 244 RC787 HRFT472JBA R CHIP 1 10 4 7K OHM J 1608 245 RC788 HRFT472JBA R CHIP 1 10 4 7K OH...

Page 21: ...X25 TP 285 C880 CH1BEE472M C CERA AC U C V 2 5KV 4700PF TP 286 C881 CH1BEE472M C CERA AC U C V 2 5KV 4700PF TP 287 ZZ200 PTMPJBK016 PCB MAIN M 10 AS DTQ 29U1SC 288 10 2TM18006BE TAPE MASKING 6 2X500 2...

Page 22: ...6310600 EYE LET BSR T0 2 R2 3 333 E114 4856310600 EYE LET BSR T0 2 R2 3 334 E115 4856310600 EYE LET BSR T0 2 R2 3 335 E116 4856310600 EYE LET BSR T0 2 R2 3 336 E117 4856310600 EYE LET BSR T0 2 R2 3 33...

Page 23: ...100V 0 01MF J TP 377 C302 CEXF1H479V C ELECTRO 50V RSS 4 7MF 5X11 TP 378 C303 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP 379 C305 CEXF1H101V C ELECTRO 50V RSS 100MF 8X11 5 TP 380 C307 CXSL2H100D C CER...

Page 24: ...11 TP 422 C615 CEXF1H338V C ELECTRO 50V RSS 0 33MF 5X11 TP 423 C618 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP 424 C620 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP 425 C621 CEXF1C470V C ELECTRO 16V RSS 4...

Page 25: ...3198Y 470 R301 RN02B471JS R METAL FILM 2W 470 OHM J SMALL 471 R302 RN02B620JS R METAL FILM 2W 62 OHM J SMALL 472 R304 RN02B221JS R METAL FILM 2W 220 OHM J SMALL 473 R305 RN02B181JS R METAL FILM 2W 180...

Page 26: ...CERA 50V B 680PF K AXIAL 512 C524 CCZF1H473Z C CERA 50V F 0 047MF Z 513 C527 CCZF1H103Z C CERA 50V F 0 01MF Z 514 C533 CBZF1H104Z C CERA SEMI 50V F 0 1MF Z 515 C535 CCZF1H103Z C CERA 50V F 0 01MF Z 5...

Page 27: ...8 TAPPING 558 D561 D1N4148 DIODE 1N4148 TAPPING 559 D601 DUZ8R2BM DIODE ZENER UZ 8 2BM 560 D602 DUZ6R2BM DIODE ZENER UZ 6 2BM 561 D701 D1N4148 DIODE 1N4148 TAPPING 562 D704 DUZ3R9B DIODE ZENER UZ 3 9B...

Page 28: ...602 J030 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 603 J031 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 604 J032 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 605 J033 85801065GY WIRE COP...

Page 29: ...647 J075 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 648 J076 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 649 J077 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 650 J078 85801065GY WIRE COP...

Page 30: ...692 J120 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 693 J121 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 694 J122 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 695 J123 85801065GY WIRE COP...

Page 31: ...L 3 5MM 735 L406 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING 736 L501 5CPZ568M02 COIL PEAKING 0 56UH M AXIAL 3 5MM 737 L502 5CPZ568M02 COIL PEAKING 0 56UH M AXIAL 3 5MM 738 L503 5CPZ689K02 COIL PE...

Page 32: ...M J 782 R701 RD AZ479J R CARBON FILM 1 6 4 7 OHM J 783 R703 RD AZ101J R CARBON FILM 1 6 100 OHM J 784 R762 RD AZ511J R CARBON FILM 1 6 510 OHM J 785 R802 RN AZ5601F R METAL FILM 1 6 5 6K OHM F 786 R80...

Page 33: ...0V C ELECTRO 160V RSS 10MF 10X16 TP 828 ZZ200 PTCPJBK016 PCB CRT M 10 AS DTQ 29U1SC 829 R904 RS01Z683J R M OXIDE FILM 1W 68K OHM J TAPPING 830 R907 RS01Z683J R M OXIDE FILM 1W 68K OHM J TAPPING 831 R9...

Page 34: ...2 D905 DUZ12BM DIODE ZENER UZ 12BM UNIZON 873 D906 D1N4148 DIODE 1N4148 TAPPING 874 D907 D1N4148 DIODE 1N4148 TAPPING 875 D908 D1N4148 DIODE 1N4148 TAPPING 876 D909 D1N4148 DIODE 1N4148 TAPPING 877 D9...

Page 35: ...R916 RD AZ472J R CARBON FILM 1 6 4 7K OHM J 917 R917 RD AZ751J R CARBON FILM 1 6 750 OHM J 918 R918 RD AZ472J R CARBON FILM 1 6 4 7K OHM J 919 R919 RC 2Z272K R CARBON COMP 1 2 2 7K OHM K 920 R920 RC 2...

Page 36: ...947 RD 4Z620J R CARBON FILM 1 4 62 OHM J 946 R948 RD 2Z279J R CARBON FILM 1 2 2 7 OHM J 947 R950 RD 2Z279J R CARBON FILM 1 2 2 7 OHM J 948 R952 RD 4Z620J R CARBON FILM 1 4 62 OHM J 949 R955 RD AZ182J...

Page 37: ...2083500 MASK FRONT FR HIPS GY 29U1 29U1 6 4852084000 MASK FRONT FR HIPS GY 29U5 29U5 7 M481 4854864100 BUTTON POWER FR HIPS GY 29U1 29U1 8 4854864600 BUTTON POWER FR HIPS GY 29U5 29U5 9 M811 485810110...

Page 38: ...215402 4856015821 WASHER RUBBER SCREW CRT FIX 4 4 CR T2 0 SWRM SK5 L 35 4852163101 COVER BACK 1 1 HIPS GY 4851114003 SIDE AV PCB PANEL AV ASSY 1 1 CN 321 2326802 5934301 7178301212 SCREW TAPTITE 2 TT2...

Page 39: ...ER RUBBER SCREW CRT FIX 4 4 CR T2 0 SWRM SK5 L 35 4852163101 COVER BACK 1 1 HIPS GY 4851114003 SIDE AV PCB PANEL AV ASSY 1 1 CN 321 2326802 5934301 7178301212 SCREW TAPTITE 2 TT2 WAS 3X12 MFZN BK 1 8...

Page 40: ...39 PRINTED CIRCUIT BOARD CN 794N MAIN Top...

Page 41: ...40 PRINTED CIRCUIT BOARD CN 794N MAIN Silkscreen Bottom...

Page 42: ...41 PRINTED CIRCUIT BOARD CN 794N MAIN Silkscreen Top...

Page 43: ...42 PRINTED CIRCUIT BOARD CN 794N MAIN Drill Drawing...

Page 44: ...43 PRINTED CIRCUIT BOARD CN 794N MAIN Solder Mask Top...

Page 45: ...44 PRINTED CIRCUIT BOARD CN 794N CRT Top...

Page 46: ...45 PRINTED CIRCUIT BOARD CN 794N CRT Silkscreen Bottom...

Page 47: ...46 PRINTED CIRCUIT BOARD CN 794N CRT Silkscreen Top...

Page 48: ...47 PRINTED CIRCUIT BOARD CN 794N CRT Drill Drawing...

Page 49: ...48 PRINTED CIRCUIT BOARD CN 794N CRT Solder Mask Top...

Page 50: ...Spare Vss XT1 XT2 VDD KEY IN AFT IN NC A D RESET FILTER CVBS in VS inv HS inv POWER D G SW A mute V SW MSPRES NC VDPRES ST LED RC IN I O I P I O S VHS SCL1 SDA1 SCL2 SDA2 OSD I OSDblk OSD B OSD G OSD...

Page 51: ...H 22 R OSD RED Signal OUTPUT H O 23 G OSD GREEN Signal OUTPUT H O 24 B OSD BLUE Signal OUTPUT H O 25 BL OSD BLANKING Signal OUTPUT H O 26 I OSD Intensity 27 SDA0 Tuner serial data OUTPUT H O U 28 SCLK...

Page 52: ...VIN4 VIN3 VIN2 VIN1 CIN1 VOUT VSUPAF VRT SGND GNDAF CBIN CIN2 CRIN XTAL2 XTAL1 HOUT CLK20 FBLIN2 BIN2 GIN2 RIN2 FBLIN BIN GIN RIN VRD BOUT GOUT ROUT VSUPAB GNDAB SVMOUT XREF I501 VDP3130Y 1 2 3 4 5 6...

Page 53: ...ort 1 Bit 1 20 P2 IN OUT Port 1 Bit 2 21 P3 IN OUT Port 1 Bit 3 22 P4 IN OUT Port 1 Bit 4 23 P5 IN OUT Port 1 Bit 5 24 P6 IN OUT Port 1 Bit 6 25 GNDD SUPPLY Digital Ground 26 RSW2 OUT Range Switch 2 f...

Page 54: ...ystal Input 52 XTAL2 OUT Analog Crystal Output 53 CIN2 CRIN IN Analog chroma2 component CR Input 54 CBIN IN Component CB Input 55 GNDAF SUPPLY Analog Ground Frontend 56 SGND IN Signal Ground for Analo...

Page 55: ...54 WAVEFORMS 2 T801 PIN17 POWER ON 2 T801 PIN17 STAND BY 0 1 I801 PIN7 POWER ON 1 I801 PIN7 STAND BY 4 T402 PIN1 HOR OUT 3 I501 PIN50 HOUT Appendix...

Page 56: ...55 WAVEFORMS Appendix 5 T402 PIN3 200V LINE 6 T402 PIN9 HEATER LINE 7 T402 PIN4 12V LINE 8 T402 PIN6 27V LINE 9 I501 PIN31 VERTICAL RAMP 10 I501 PIN32 E W...

Page 57: ...56 WAVEFORMS Appendix 11 CVBS Composite Video 12 I501 PIN52 VDP X TAL 13 I501 PIN11 VSYNC 14 SVM Q902 BASE 15 SVM Q906 BASE 16 SVM Q907 BASE...

Page 58: ...57 WAVEFORMS Appendix 17 SVM Q909 BASE 18 I901 PIN7 ROUT...

Page 59: ...PWR on H PWR off L R873 D806 R802 4 5 6 7 8 3 2 1 D871 I803 R868 I804 LTV817 I804 LTV827 I805 LTV817 D811 C891 D804 D802 C892 C807 R805 D810 R892 R891 L802 C809 Check Waveform 8 7 11 10 12V C871 R872...

Page 60: ...stal d Check composite video 61 Check Vsup 5V 58 17 check Vsup 3 3V Check HOUT 50 15 39 I501 Check RGB Signal OUTPUT 38 37 Check 200V LINE Check Vsup 5V 36 D405 T402 FBT D406 Check heater voltage Chec...

Page 61: ...32 768KHz ST BY 5V Check clock data signal Check the crystal f Check Vcc of sound AMP Sound B 14V 3 16 Check audio output signal 1 Speaker L 14 Speaker R Audio input L 6 I602 TDA8944J Audio input R 12...

Page 62: ...omposite Video Signal TUNER CVBS T DATA T CLOCK Check T SDA SCL 27 28 61 29 SDA 4 30 SCL 3 10 11 12 SDA X701 32 768KHz ST BY 5V SCL Check the crystal 5 6 Check SDA SCL 8 ST BY 5V Check the input signa...

Page 63: ...6 58 51 Check the crystal Check the Voltage Check Vout signal Check Vertical signal Vertical D Y Check the Voltage 27V I301 Vcc 27V Check R G B signal X501 X501 Vsup 5V Vsup 5V Vsup 3 3V 61 I501 VDP31...

Page 64: ...I501 VDP3130Y IL701 REMOCON PREAMP I701 MICOM I701 MICOM H SYNC ST BY 5V ST BY 5V ST BY 5V 20 22 23 24 25 41 42 43 44 12 11 10 12 34 11 10 X701 Check the crystal X701 Check the crystal Check OSD R G B...

Page 65: ...PRINTED DATE Apr 2003...

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