Daewoo DTQ-20S1SSFV Service Manual
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Daewoo DTQ-20S1SSFV Service Manual

Daewoo DTQ-20S1SSFV Service Manual

Color television
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Service Manual

Color Television
CHSSIS MODEL
CN-402FN
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.
S/M No : TCN402FEF0
DTQ-20S1SSFV
DTQ-2130SSFV
DTQ-21D7SSPV
DTQ-21U6SSFV
DTQ-21U6SSV
MAR. 2006

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Summary of Contents for Daewoo DTQ-20S1SSFV

  • Page 1: Service Manual

    S/M No : TCN402FEF0 Service Manual Color Television CHSSIS MODEL CN-402FN DTQ-20S1SSFV DTQ-2130SSFV DTQ-21D7SSPV DTQ-21U6SSFV DTQ-21U6SSV 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.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CIRCUIT BLOCK DIAGRAM APPENDIX(Appendix is provide only by internet[http://svc.dwe.co.kr]) IC DESCRIPTION UOC III SERIES TDA8358J VERTICAL AMPLIFIER TDA6107AJF 24WC16-16 KB EEPROM LA42072N-E AUDIO AMPLIFIER STR-W6735/56 WAVEFORMS TROUBLE SHOOTING GUIDE NO POWER NO PICTURE NO SOUND CH DON’T MEMORY or SKIP NO COLOR NO VERTICAL DEFLECTION REMOTE CONTROL DOESNOT OPERATE...
  • Page 3 CIRCUIT BLOCK DIAGRAM...
  • Page 4 ALIGNMENT INSTRUCTION 1. SERVICE MODE ADJUSTMENTS Follow the steps below whenever service adjustment is required. See Table- A and Table- B to determine if service adjustments are required. 1) How to enter the service mode using the user remote control. - Turn the set on.

  • Page 5: Alignment Instruction

    ALIGNMENT INSTRUCTION DTQ-20S1SSFV EEPROM DATA (050407) CN-402FN MODE NAME REMARKS MODE NAME REMARKS HEAT RUN RUN OFF PWLDAC SCREEN ADJUST 580V AGC LEVEL IFOFF S7-2 CHSE BPBS RF:0, AV:1 CBPS Fine Tunning FILTBW IDMOD OVMTHR R-GAIN IDMOD SLOW KOR G-GAIN V.SIZE...

  • Page 6: Ic Description

    ALIGNMENT INSTRUCTION 2. ASSEMBLY ADJUSTMENTS 1) SCREEN ADJUSTMENT (S2) Enter the service mode and select service adjustment S2. You can see the one horizontal line on the screen. Adjust the Screen Control Volume (located on FBT) so that the horizontal line onscreen may be disappeared.
  • Page 7 ALIGNMENT INSTRUCTION 4-1) Vertical Position Adjustment. - Select V.SLOPE item, adjust V.SLOPE data value till the horizontal line in the centre of the video signal is just at the position where the blanking stars. - Select V.CENTER item, adjust V.CENTER data value to center the raster properly on the screen. 4-2) Vertical Size Adjustment - Select V.SIZE item, adjust V.SIZE data value to proper vertical size as follows.
  • Page 8 ALIGNMENT INSTRUCTION 4-4). H.BOW, PARABOLA Adjustment * Adjust the H.BOW, PARABOLA to compensate for geometrical distortion. * You can not adjust the H.PARALLEL, H.SIZE, EW TRAPEZ, CORNER TOP and CORNER BOTTOM. H.PARALLEL -12-...
  • Page 9 ALIGNMENT INSTRUCTION 5) WHITE BALANCE ADJUSTMENT(S8) Receive a good local channel. Enter the service mode and select service adjustment S8. You can see the OSD as shown in below. R-GAIN SRC R-BIAS G-GAIN SRC G-BIAS B-GAIN CVI R-BIAS R-BIAS CVI G-BIAS G-BIAS SELECT ADJUST...

  • Page 10: Uoc Iii Series

    IC DESCRIPTION 1. UOC III SERIES 1-1. UOC III BLOCK DIAGRAM -14-...
  • Page 11 IC DESCRIPTION HERCULES FULL-STEREO (SSDIP90) (standard version) -19-...
  • Page 12 IC DESCRIPTION STANDARD FACE DO WN VERSION VERSION SYMBOL DESCRIPTION VSSP2 ground VSSC4 ground VDDC4 digital supply to SDACs (1.8V) VDDA3(3.3V) supply (3.3 V) VREF_POS_LSL positive reference voltage SDAC (3.3 V) VREF_NEG_LSL+HPL negative reference voltage SDAC (0 V) VREF_POS_LSR+HPR positive reference voltage SDAC (3.3 V) VREF_NEG_HPL+HPR negative reference voltage SDAC (0 V) VREF_POS_HPR...
  • Page 13 IC DESCRIPTION STANDARD FACE DO WN VERSION VERSION SYMBOL DESCRIPTION VIFIN2 IF input 2 vertical sawtooth capacitor IREF reference current input GNDIF ground connection for IF ampli er SIFIN1/DVBIN1 SIF input 1 / DVB input 1 SIFIN2/DVBIN2 SIF input 2 / DVB input 2 AGCOUT tuner AGC output EHTO...
  • Page 14 IC DESCRIPTION STANDARD FACE DO WN VERSION VERSION SYMBOL DESCRIPTION AGC2SIF 44/- 47/- AGC capacitor second sound IF supply voltage TV processor (+5 V) IFVO/SVO/CVBSI IF video output / selected CVBS output / CVBS input AUDIOIN4 audio 4 input AUDIOIN4L audio-4 input (left signal) AUDIOIN4R audio-4 input (right signal)
  • Page 15 IC DESCRIPTION STANDARD FACE DO WN VERSION VERSION SYMBOL DESCRIPTION scan velocity modulation output FBISO/CSY ybac k input/sandcastle output or composite H/V timing output HOUT horizontal output VSScomb ground connection for comb lter VDDcomb supply voltage for comb lter (5 V) VIN (R/P IN2/C V-input for YUV interface (2...
  • Page 16 IC DESCRIPTION STANDARD FACE DO WN VERSION VERSION SYMBOL DESCRIPTION VDDA1 analog supply for TCG m -Controller and digital supply for TV-processor (+3.3 V) VREFAD_NEG negative reference voltage (0 V) VREFAD_POS positive reference voltage (3.3 V) VREFAD reference voltage for audio ADCs (3.3/2 V) GNDA ground VDDA(1.8V)
  • Page 17 IC DESCRIPTION STANDARD FACE DO WN VERSION VERSION SYMBOL DESCRIPTION P1.6/SCL port 1.6 or I C-bus clock line P1.7/SDA port 1.7 or I C-bus data line VDDP(3.3V) supply to periphery and on-chip voltage regulator (3.3 V) P2.0/TPWM port 2.0 or Tuning PWM output P2.1/PWM0 port 2.1 or PWM0 output P2.2/PWM1...

  • Page 18: Tda8358J Vertical Amplifier

    IC DESCRIPTION -26-...
  • Page 19 IC DESCRIPTION -27-...

  • Page 20: Tda6107Ajf

    IC DESCRIPTION -28-...

  • Page 21: 24Wc16-16 Kb Eeprom

    IC DESCRIPTION -29-...

  • Page 22: La42072N-E Audio Amplifier

    IC DESCRIPTION -30-...

  • Page 23: Str-W6735/56

    IC DESCRIPTION 6. STR-W6735 FUNCTIONS OF EACH TERMINAL TERMINAL SYMBOLS DESCRIPTIONS FUNCTIONS DRAIN TERMINAL MOSFET DRAIN S/GND SOURCE/GND MOSFET SOURCE / GND INPUT OF POWER SUPPLY SET UP TERMINAL FOR CONTROL CIRCUIT DELAY AT OVERLOAD / OVERLOAD PROTECTION SS/OLP SOFT START SET UP AND SOFT START TERMINAL OPERATION TIME SET UP...
  • Page 24 IC DESCRIPTION ELECTRICAL CHARACTERISTICS IN CONTROL PART (Ta=25¡ , Vcc=20V, UNLESS OTHERWISE SPECIFIED) RATINGS PARAMETER TERMINAL SYMBOL UNITES POWER SUPPLY START-UP OPERATION OPERATION START VOLTAGE Vcc(on) 16.3 18.2 19.9 OPERATION STOP VOLTAGE Vcc(off) 10.6 CIRCUIT CURRENT IN OPERATION Icc(on) CIRCUIT CURRENT IN NON-OPERATION Icc(off) OSCILLATION FREQUENCY fosc...

  • Page 25: Waveforms

    WAVEFORMS Appendix WAVEFORMS 1).I801 PIN1 2).T402(FBT) HOR.OUT 3).T402(FBT) 190V(D406) 4).I701 PIN73 HOUT 5).I701 PIN76 V+.OUT 6).I701 PIN76 V-.OUT -33-...
  • Page 26 WAVEFORMS Appendix 7).I701 (X-TAL) 8).I301 PIN4 V.OUT 9).I901 PIN R.IN 10).I901 PIN R.OUT -34-...

  • Page 27: Troubleshooting Guide

    TROUBLESHOOTING GUIDE Appendix 1. NO POWER -35-...

  • Page 28: No Picture

    TROUBLESHOOTING GUIDE Appendix 2. NO PICTURE NG : Go To The Figure (A) Check The Waveform of TU101 IF PIN OK : Go To The Figure (B) TU101 TUNER CHECK VOLTAGE CHECK CLOCK,DATA Z101 Z101 CHECK THE SAW FILTER SAW FILTER VOLTAGE SCL/SD #22,43,45,63,80...

  • Page 29: No Sound

    TROUBLESHOOTING GUIDE Appendix 3. NO SOUND NG : Go To The Figure (C) Check The Output Signal of I701 #57,58 OK : Go To The Figure (D) TU101 TUNER CHECK VOLTAGE CHECK CLOCK,DATA Z101 Z101 SAW FILTER SAW FILTER SCL/SD #7,8 I701 #22,43,45,63,80...

  • Page 30: Ch Don't Memory Or Skip

    TROUBLESHOOTING GUIDE Appendix 4. CH DON’T MEMORY or SKIP NG : Loss of Signal or Weak Signal Check The Iutput Signal Conditions OK : Go To The Figure (E) TU101 TUNER CHECK CHECK CLOCK,DATA VOLTAGE Z101 Z101 SAW FILTER SAW FILTER I702 EEPROM #5,6...

  • Page 31: No Color

    TROUBLESHOOTING GUIDE Appendix 5. NO COLOR CHECK THE VOLTAGE CHECK THE #83,84,85 #22,43,45,63,80 RGB OUT I701 3.3V #9,16,86,88 #18,19 CHECK THE CHECK THE X701 CRYSTAL CRYSTAL 24.576MHz 6. NO VERTICAL DEFLECTION I701 CHECK THE VERTICAL SIGNAL VERTICAL #76,77 CHECK THE CRYSTAL #18,19 X701...

  • Page 32: Remote Control Doesnot Operate

    TROUBLESHOOTING GUIDE Appendix 7. REMOTE CONTROL DOES NOT OPERATE CHECK THE VOLTAGE #22,43,45,63,80 I701 3.3V #9,16,86,88 #18,19 CHECK THE CHECK THE X701 CRYSTAL CRYSTAL 24.576MHz CHECK THE WAVEFORM CHECK THE IF01 VOLTAGE IC PREAMP 3.3V -40-...

  • Page 33: Electrical Parts List

    ELECTRICAL PARTS LIST 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) **This BOM is based on DTQ-2130SSFV, DTQ-21U6SSFV PARTS CODE PARTS NAME...
  • Page 34 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK C819 CEYF1E332V C ELECTRO 25V RSS 3300MF (16X31.5) CS803 CH1BFE222M C CERA AC U/C/V AC400V 2200PF CS804 CH1BFE222M C CERA AC U/C/V AC400V 2200PF D809 DRGP30J—- DIODE RGP30J DO-201AD 600V 3A D813 DRGP30J—- DIODE...
  • Page 35 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK RY801 DJ5020M270 POSISTOR J502P72D070M270 SW707 5S50101035 SW TACT KPT-1112 1C-1P T401 50D10A3—- TRANS DRIVE TD-10A3 T402 50H0000302 LTC-545 T801 50M3541C1- TRANS SMPS TSM-3541C1 TU101 4859726730 TUNER VARACTOR TAEC-H012F(A) X701 5XJ24R576E CRYSTAL QUARTZ HC-49/S 24.576MHZ 30PPM Y801...
  • Page 36 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK R408 RS02Z102JS R M-OXIDE FILM 2W 1K OHM J SMALL R409 RS01Z103J- R M-OXIDE FILM 1W 10K OHM J (TAPPING) R411 RS02Z390JS R M-OXIDE FILM 2W 39 OHM J SMALL R416 RF01Z338K- R FUSIBLE...
  • Page 37 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK C420 CCXB2H102K C CERA 500V B 1000PF K (TAPPING) C422 CMXM2A473J C MYLAR 100V 0.047MF J (TP) C423 CMXM2A104J C MYLAR 100V 0.1MF J (TP) C601 CEXF1E470V C ELECTRO RSS 25V 47MF 5X11 P5.0 TA C602 CMXL1J224J C MYLAR...
  • Page 38 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK C821 CEXF1H479V C ELECTRO 50V RSS 4.7MF (5X11) TP C824 CMXL1J154J C MYLAR 63V MEU 0.15MF J C826 CEXF1E221V C ELECTRO 25V RSS 220MF (8X11.5) TP C827 CEXF1C331V C ELECTRO 16V RSS 330MF (8X11.5) TP C834 CMXL1J104J...
  • Page 39 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK C110 CCZB1H222K C CERA 50V B 2200PF K AXIAL C111 CCZB1H222K C CERA 50V B 2200PF K AXIAL C126 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z C129 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z C203 CBZF1H104Z...
  • Page 40 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK D801 DLT2A05G— DIODE LT2A05G (TP) D802 DLT2A05G— DIODE LT2A05G (TP) D803 DLT2A05G— DIODE LT2A05G (TP) D804 DLT2A05G— DIODE LT2A05G (TP) D805 D1N4937G— DIODE 1N4937G (TAPPING) D806 D1N4937G— DIODE 1N4937G (TAPPING) D807 D1N4148—- DIODE...
  • Page 41 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK R104 RD-AZ100J- R CARBON FILM 1/6 10 OHM J R105 RD-AZ473J- R CARBON FILM 1/6 47K OHM J R107 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R108 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J R111 RD-AZ181J-...
  • Page 42 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK R625 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R626 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R627 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R628 RD-AZ103J- R CARBON FILM 1/6 10K OHM J R629 RD-AZ103J-...
  • Page 43 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK R777 RD-AZ332J- R CARBON FILM 1/6 3.3K OHM J R778 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R779 RD-AZ101J- R CARBON FILM 1/6 100 OHM J R780 RN-AZ5600F R METAL FILM 1/6 560 OHM F R803 RD-4Z100J-...
  • Page 44 ELECTRICAL PARTS LIST PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK 2193102005 SOLDER BAR SN:PB=63:37 S63S-1320 2291050616 FLUX SOLDER JS-71 2291050301 FLUX SOLVENT IM-1000 I901 PTE3SW1100 HEAT SINK ASS’Y 1TDA6107AJ + 7174300851 00001 1TDA6107AJ IC VIDEO TDA6107AJF 0000A 4857031100 HEAT SINK A1050P-H24 T2.0 0000B 7174300851...

  • Page 45: Different Parts List

    DIFFERENT PARTS LIST DTQ-20S1SSFV NO LOC PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK 00020 4859000240 ADAPTER 2P15A 300V(D=4.0) A001 4859830713 PCB CRT 108X61.5(246X246/8) S1B C406A CMXF2E434J C MYLAR 250V MPP 0.43MF J (TP) C408 CMYH3C752J C MYLAR 1.6KV BUP 7500PF J...
  • Page 46 DIFFERENT PARTS LIST DTQ-21U6SSV NO LOC PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK 00001 1STRW6735- IC POWER STR-W6735 C406A CMXF2E304J C MYLAR 250V MPP 0.3MF J (TP) C408 CMYH3C662J C MYLAR 1.6KV BUP 6600PF J C801 CL1UC3104M C LINE ACROSS WORLD AC250V 0.1UF M R.47 C802 CL1UC3104M...
  • Page 47 DIFFERENT PARTS LIST DTQ-21D7SSPV PARTS CODE PARTS NAME PARTS DESCRIPTION REMARK 00001 1STRW6754- IC POWER STR-W6754 C406 CMYF2G624J C MYLAR 400V MPP 0.62MF J C408 CMYH3C752J C MYLAR 1.6KV BUP 7500PF J C806 CEYD2G181D C ELECTRO 400V FHS 180MF (25X35) CRT1 4859637160 A51EHW135X01...

  • Page 48: Printed Circuit Board

    -58-...
  • Page 49 -59-...
  • Page 50 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA PRINTED DATE : MAR. 2005...

This manual is also suitable for:

Dtq-2130ssfvDtq-21d7sspvDtq-21u6ssfvDtq-21u6ssv

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