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DAEWOO ELECTRONICS DTQ-29G1TS Service Manual

Chassis: cn-217i
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Summary of Contents for DAEWOO ELECTRONICS DTQ-29G1TS

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. SPECIFICATIONS ........................... 2 2. EXTERNAL VIEW..........................3 3. BLOCK DIAGRAM ......................... 6 4. ALIGNMENT INSTRUCTION ......................7 5. IC DESCRIPTION ........................... 15 6. CIRCUIT DESCRIPTION ........................ 29 7. TROUBLE SHOOTING GUIDE ....................... 32 8. ELECTRICAL PARTS LIST......................40...

  • Page 3: Specifications

    1. SPECIFICATIONS MODEL NAME DTQ-25G1TS/TSP DTQ-29G1TS/TSP DTQ-29G3TS/TSP TV Standard NTSC-M NTSC-M NTSC-M M ain Voltage TS: 120V 60Hz TS: 120V 60H z TS: 120V 60Hz TSP:220V 50/60Hz TSP:220V 50/60Hz TSP:220V 50/60Hz Power Consum ption 115W 125W 125W Tuning System Frequency Synthesizer...

  • Page 4: External View

    2. EXTERNAL VIEW FRONT VIEW M O D E L N A M E : D TQ -29G 1TS /TS P D TQ -25G 1TS /TS P REAR VIEW...

  • Page 5: Front View

    FRONT VIEW M O D E L N A M E : D TQ -29G 3TS /TS P REAR VIEW...
  • Page 6 REM O CO N 1 POW ER U se this button to turn your T V on or off. 2 M UTE U se to turn the TV ’s sound on and off. 3 PIP ON/OFF U se this button to turn P IP on/off. 4 PIP POSITIO N U se this button to turn P IP display position.

  • Page 7: Block Diagram

    3. BLOCK DIAGRAM...

  • Page 8: Alignment Instruction

    4. ALIGNMENT INSTRUCTION Service Mode Adjustment 1. H ow to enter into S ervice M ode D irect the rem ote control to the reception w indow of TV. P ush buttons of rem ote control in sequence. M U T E R E C A LL M U TE T hen, the screen w ill appear as follow s.

  • Page 9: Assembly Adjustment

    2. S T E R E O /S A P A U T O A D JU S T M E N T(S 11) R eceive theZenith M TS signal of 1kH z C H . S elect the S 10 of service m ode to display item s, then press the S elect A uto off, then execute A uto on.
  • Page 10 P ress the R E C A LL key of rem ote control to store. G E O M ET R Y # H _PH A SE # V.D C # V.SIZE N O SD P O W ER O F F YE S M ove Adjust...
  • Page 11 4. R F A G C A D JU S TM E N T(S 5) R eceive the signal of R F 100% Full color bar 60dB C onnect S cope to P 102. S elect the S 5 of service m ode to display item s, then press the S elect R F A G C .D , then adjust the m axim um voltage of scope to alternate 1V.
  • Page 12 6. D .P A D JU S TM E N T. R eceive the R etm a P attern. S elect the S 9 of service m ode to display item s, then press the S elect of B rightness, then adjust S ub B right level in order that the gradation pattern m ay serve 18% P ress the R E C A LL key to store.
  • Page 13 8. FO R W A R D IN G M O D E (S 12) S elect the S 7 of service m ode to display item s, then press the M E M O R Y...
  • Page 14 INITIAL DATA 1. LA 76070A B it M ap. M SB DATA Default Rem ark ADD. T_Enable Vid_M ute Sync_Kill AFC G ain H_phase IF AG C SW AFT DEF R F_AG C_Delay VIDEO SW PLL TUNING Aud_M ute APC DET ADJU ST VCD M O DE Ver_D C Ver_kill...
  • Page 15 2. TD A 9852 B it M ap M SB Initial Data FUNCTION Register Volum e R 0100 0111 Volum e L 0100 0111 Control 1 CO N1 G M U AVLO N LO FF 1101 0000 Control 2 CO N2 S tereo TZCM LU M...

  • Page 16: Ic Description

    5. IC DESCRIPTION I701 - LC 864720/32A (M -com ) 1. B LO C K D IA G R A M...
  • Page 17 2. P IN D E S C R IP TIO N NAME FUNCTION REMARK I.D In - CCTV I.D Input Terminal CM OS - Norm al : High Push-Pull N .C CM OS (P 11) Push-Pull M A IN C LO C K - LA76070/TDA9852/M65617SP/EEPRO M CLOCK Output Term inal CM OS O U TP U T(P 12)
  • Page 18 NAME FUNCTION REMARK /V -S yn c - Sync.signal for Vertical position. - 0 ~ 5V pulse - Detect input- Active Low /H -S yn c - Sync. signal for Hor_position - 0 ~ 5V pulse - Detect input - Active Low - Detect input - Active High - Dot pattern of OSD Output O S D Y s...
  • Page 19 NAME FUNCTION REMARK O ption B IN - HIGH : AV PIP FUNCTIO N CM OS (P 01) - LOW : 2-TUNER PIP FUNCTIO N Push Pull O ption C IN - HIGH : AV VIDEO MO DE CM OS (P 02) - LOW : NO VIDEO MODE Push Pull...
  • Page 20 I501 - LA 76070A (IC V ID E O P R O C E S S O R ) 1. B LO C K D IA G R A M...
  • Page 21 2. P IN D E S C R IP TIO N FUNCTION FUNCTION Ext. Video Input FM Coil VCO Tank 1 Audio O utput VCO Tank 2 FM Filter IF Vcc Sound IF Input Audio Input PIF APC Filter RF AG C O utput Internal Video Input FM O utput Bus G round...
  • Page 22 IP01 - M 65617S P (IC P IP ) 1. G E N E R A L D E S C R IP T IO N The M 65617S P is N TS C P IP (P icture in P icture) signal processing LS I, w hose sub and m ain-picture inputs are com posite and Y /C separate signal, respectively.
  • Page 23 4. B LO C K D IA G R A M / P IN D E S C R IP TIO N...
  • Page 24 Nam e Function AVss3(VCXO ) G ND Connects to analog G ND VCXO out VCXO output signal VCXO in VCXO input signal FILTER Filter BIAS Bias AVdd3(VCXO ) Connect to analog power supply AVdd2(m ) Connect to analog G ND Vin(m ) Chrom a signal input(m ain-picture) Vrt(m )
  • Page 25 Nam e Function fsc/TEST3 For test M CK For test(connected to G ND) SW M /TEST4 For test HD/TEST5 I(/O ) Horizontal sync input signal(positive going edge is used) VD/TEST6 I(/O ) Vertical sync input signal(active H) SW M G /TEST7 I/(O ) Enable input signal to display sub picture(H enable) DVdd3(RAM )
  • Page 26 5. B LO C K D IA G R A M 6. P IP TV S Y S TE M B LO C K D IA G R A M...
  • Page 27 I601 - TD A 9852 C IC A U D IO P R O C E S S O R 1. B LO C K D IA G R A M & P IN D E S C R IP TIO N...
  • Page 28 2. P IN D E S C R IP TIO N SYM BOL PIN N/B DESCRIPTION REMARK O UTL output, left channel input loudness, left channel input volum e, left channel EO L output effects, left channel autom atic volum e control capacitor reference voltage 0.5Vcc input line control, left channel input autom atic volum e control, left channel...
  • Page 29 SYM BOL PIN N/B DESCRIPTION REMARK capacitor for pilot detector capacitor for phase detector capacitor for filter adjustm ent ceram ic resonator capacitor DC-decoupling m ono capacitor DC-decoupling stereo/SAP LO R output line control, right channel SO R output selector, right channel input autom atic volum e control, right channel input line control, right channel capacitor 2 pseudo function...

  • Page 30: Circuit Description

    6. CIRCUIT DESCRIPTION OCP (OVER CURRENT PROTECTION) CIRCUIT Th is circuit is designe d to protect th e circuit from over current due to ove rload occurred a t the rea r of 134 V line . 1. C O N F IG U R ATIO N O F O C P C IR C U IT 2.
  • Page 31 TV /V ID E O S W ITC H IN G 1. M IC O M S W ITC H IN G FU N C TIO N PIN NO PIN NAM E FUNCTION REM ARK #28(PW M 3) M AIN SW O UT TV : HIG H, VIDEO : LO W #29(PW M 4) VIDE O SW O UT...
  • Page 32 POW ER BLOCK This pow er system is a H ybrid IC w ith a built-in pow er transistor and a separate excitation control IC , designed for converter type sw itch m ode pow er supply application, T he IC is capable of quasi-resonant m ode and requires sm all num ber of external com ponents, and sim plifies circuit design.

  • Page 33: Trouble Shooting Guide

    7. TROUBLE SHOOTING GUIDE 7-1. NO POWER...
  • Page 34 Condition Step Check Point Rem ark Check fuse next step Replace fuse 250V 6.3A Check bridge diode next step Replace D 801 Check DC Voltage(8V over) next step Check/replace R802 Check ripple voltage(1.5V under) next step Check/replace C802 Waveform is fig.17 next step Check D802~D804, replace I801...
  • Page 35 7-2. NO POWER (LED O.K) - N O P O W E R 2 Condition Step Check Point Rem ark Check voltage.(5V) Next Step G o to NO PO W ER1 Check SDA,SCL Next Step Check/replace I701,I702 Check X701 Next Step Replace X701 Waveform is fig.18 Next Step...
  • Page 36 7-3. NO PICTURE (PASTER OK) Condition Step Check Point Rem ark Waveform is fig.20 Next Step Check/replace TU01 Check 33V Next Step G o to NO PO W ER 1 Check 5V Next Step G o to NO PO W ER 1 Check 9V Next Step G o to NO PO W ER 1...
  • Page 37 7-4. NO PICTURE (NO COLOR) Condition Step Check Point Rem ark IF V cc=7.6V dc ? N ext S tep G o to NO P O W E R 2 I501 V cc = 7.6V dc? N ext S tep G o to NO P O W E R 2 P LL Tuning is operate ? N ext S tep...
  • Page 38 7-5. Deflection Condition Step Check Point Rem ark H_Vcc = 7.6Vdc Next Step G o to NO PO W ER Check waveform Next Step Check/replace I501 Check Vdc Next Step G o to NO PO W ER Check waveform Next Step Check/replace Q 401,D401,D402 Check voltage(143Vdc)
  • Page 39 7-6. No Sound Condition Step Check Point Rem ark C heck waveform Next Step R eplace L503,or I501 C heck waveform Next Step R eplace I501 V cc is 8.3V ? Next Step G o to NO PO W ER C heck waveform Next Step C heck/replace Q C601...
  • Page 40 7-7. NO PIP Condition Step Check Point Rem ark Check voltage(5V,9V,33V) Next Step G o to PO W ER Check DA,CLK,EN Next Step Check/replace I701 Check sub-AFT Next Step Replace TU02 Waveform is fig.1(1Vp-p) Next Step Replace TU02 Check Voltage(RF:high,AV:low) Next Step Replace I701 Waveform is fig.1(2.3Vp-p)

  • Page 41: Electrical Parts List

    8. ELECTRICAL PARTS LIST PART CODE PART NAM E PART DESCRIPTION REMARK ZZ100 48B3235H13 TRANSM ITTER REM O CO N R-35H13 ZZ110 PTACPW J620 ACCESSO RY AS DTQ -29G 1TS 47P7500001 BATTERY AAM 1.5V 48586217S1 M ANUAL INSTRUC TIO N DTQ -25G 1TSP ZZ120 PTBCSHJ620...
  • Page 42 PART CODE PART NAM E PART DESCRIPTION REMARK C312 CEXD 1H 109Q C ELECTRO 50V RT 1M F (6.3X11) TP C401 C EXF1E 470V C ELECTRO 25V RSS 47M F (5X11) TP C402 C EXF2C 109V C ELECTRO 160V RSS 1M F (6.3X11) TP C403 CC XB2H102K C CE RA...
  • Page 43 PART CODE PART NAM E PART DESCRIPTION REMARK C525 C EXF1C 102V C ELECTRO 16V RSS 1000M F (10X20) T C527 C EXF1H 109V C ELECTRO 50V RSS 1M F (5X11) TP C528 C EXF1H 478V C ELECTRO 50V RSS 0.47M F (5X11) TP C534 C EXF1H 100V C ELECTRO...
  • Page 44 PART CODE PART NAM E PART DESCRIPTION REMARK C640 C M XB1H153J C M YLAR 50V EU 0.015M F J (TP) C641 C M XB1H153J C M YLAR 50V EU 0.015M F J (TP) C706 C EXF1E 101V C ELECTRO 25V RSS 100M F (6.3X11) T C707 C EXF1H 100V...
  • Page 45 PART CODE PART NAM E PART DESCRIPTION REMARK C907 C EXF1E 101V C ELECTRO 25V RSS 100M F (6.3X11) T C908 CC XB3D102K C CE RA 2KV B 1000PF K (TAPPING ) C910 4S G 0D00103 SPARK G AP S-23 900V-1.5KV C911 4S G 0D00103 SPARK G AP...
  • Page 46 PART CODE PART NAM E PART DESCRIPTION REMARK CC526 HCB K103KCA C CH IP C ERA 50V X7R 0.01M F K 2012 CC529 HC Q K101JCA C CH IP C ERA 50V CH 100P F J 2012 CC530 HC Q K101JCA C CH IP C ERA 50V CH 100P F J 2012 CC535...
  • Page 47 PART CODE PART NAM E PART DESCRIPTION REMARK CC704 HCB K103KCA C CH IP C ERA 50V X7R 0.01M F K 2012 CC705 HCB K103KCA C CH IP C ERA 50V X7R 0.01M F K 2012 CC708 HCB K332KCA C CH IP C ERA 50V X7R 3300PF K 2012 CC710 HCTAF109M B...
  • Page 48 PART CODE PART NAM E PART DESCRIPTION REMARK CCP34 H CFK104ZCA C CH IP C ERA 50V Y5V 0.1M F Z 2012 CCP36 HCB K103KCA C CH IP C ERA 50V X7R 0.01M F K 2012 CCP38 H CFK104ZCA C CH IP C ERA 50V Y5V 0.1M F Z 2012 CCP39 HCQ K100DCA...
  • Page 49 PART CODE PART NAM E PART DESCRIPTION REMARK D407 DRG P15J--- DIO DE RG P15J D501 DUZ9R1BM -- DIO DE ZENER UZ-9.1BM 9.1V D504 D1N4148--- DIO DE 1N4148 (TAPPING ) D505 D1N4148--- DIO DE 1N4148 (TAPPING ) D602 D1N4148--- DIO DE 1N4148 (TAPPING ) D603 D1N4148---...
  • Page 50 PART CODE PART NAM E PART DESCRIPTION REMARK E075~E076 4856310600 EYE LET BSR T0.2 (R2.3) F801 5FKG B6323L FUSE KS M F51 6.3A 125/250V TL F801A 4857415001 CLIP FUSE PFC5000-0702 F801B 4857415001 CLIP FUSE PFC5000-0702 I301 PTC2SW 8200 HEAT SINK ASS`Y 1LA7845--- + 7174301211 I301 1LA7845---...
  • Page 51 PART CODE PART NAM E PART DESCRIPTION REMARK JC01~JC88 HRFT000-C A R CH IP 1/10 0 O HM 2012 JP01 4859102130 JACK EARPH O NE YSC-1537 JP02 4859108450 JACK PIN BO A RD YSC03P-4120-14A JP03 4859109250 JACK PIN BO A RD PH-JB-9614A JP04 4859109250...
  • Page 52 PART CODE PART NAM E PART DESCRIPTION REMARK LP04 5CPZ560K03 CO IL PEAKIN G 56UH K (AXIAL 7M M ) LP05 5CPZ560K03 CO IL PEAKIN G 56UH K (AXIAL 7M M ) M 351 4853530901 HO LDER LED N001 4857417500 TERM PIN DA-IB0214(D2.3/DY PIN) N002...
  • Page 53 PART CODE PART NAM E PART DESCRIPTION REMARK Q 903 TKTC3229-- KTC 3229 Q 905 TKTC3229-- KTC 3229 Q C501 T2SA1037KB TR CH IP 2SA1037K-T146-R Q C503 T2SC 2412KB TR CH IP 2SC2412K-T146-BR Q C504 T2SC 2412KB TR CH IP 2SC2412K-T146-BR Q C505 T2SC 2412KB...
  • Page 54 PART CODE PART NAM E PART DESCRIPTION REMARK R108 RS02Y300JS R M -O XIDE FILM 2W 30 O HM J SM ALL R109 RS02Z680JS R M -O XIDE FILM 2W 68 O HM J SM ALL R110 RS02Z101JS R M -O XIDE FILM 2W 100 O HM J SM ALL R302 RS02Z109JS...
  • Page 55 PART CODE PART NAM E PART DESCRIPTION REMARK R810 RD-4Z152J- R CA RBO N FILM 1/4 1.5K O H M J R812 RD-4Z272J- R CA RBO N FILM 1/4 2.7K O H M J R813 RS02Z473JS R M -O XIDE FILM 2W 47K O HM J SM A LL R814 RD-4Z241J-...
  • Page 56 PART CODE PART NAM E PART DESCRIPTION REMARK RC303 HRFT153JCA R CH IP 1/10 15K O HM J 2012 RC304 HRFT913JCA R CH IP 1/10 91K O HM J 2012 RC305 HRFT273JCA R CH IP 1/10 27K O HM J 2012 RC307 HRFT113JCA R CH IP...
  • Page 57 PART CODE PART NAM E PART DESCRIPTION REMARK RC504 HRFT393JCA R CH IP 1/10 39K O HM J 2012 RC505 HRFT823JCA R CH IP 1/10 82K O HM J 2012 RC506 HRFT622JCA R CH IP 1/10 6.2K O HM J 2012 RC507 HRFT272JCA R CH IP...
  • Page 58 PART CODE PART NAM E PART DESCRIPTION REMARK RC539 HRFT331JCA R CH IP 1/10 330 O HM J 2012 RC540 HRFT331JCA R CH IP 1/10 330 O HM J 2012 RC543 HRFT824JCA R CH IP 1/10 820K O HM J 2012 RC546 HRFT824JCA R CH IP...
  • Page 59 PART CODE PART NAM E PART DESCRIPTION REMARK RC613 HRFT222JCA R CH IP 1/10 2.2K O HM J 2012 RC614 HRFT752JCA R CH IP 1/10 7.5K O HM J 2012 RC615 HRFT242JCA R CH IP 1/10 2.4K O HM J 2012 RC616 HRFT512JCA R CH IP...
  • Page 60 PART CODE PART NAM E PART DESCRIPTION REMARK RC722 HRFT105JCA R CH IP 1/10 1M O HM J 2012 RC723 HRFT102JCA R CH IP 1/10 1K O HM J 2012 RC724 HRFT102JCA R CH IP 1/10 1K O HM J 2012 RC725 HRFT103JCA R CH IP...
  • Page 61 PART CODE PART NAM E PART DESCRIPTION REMARK RC834 HRFT103JCA R CH IP 1/10 10K O HM J 2012 RC839 HRFT431JCA R CH IP 1/10 430 O HM J 2012 RC840 HRFT103JCA R CH IP 1/10 10K O HM J 2012 RC842 HRFT102JCA R CH IP...
  • Page 62 PART CODE PART NAM E PART DESCRIPTION REMARK RCA12 HRFT300JCA R CH IP 1/10 30 O HM J 2012 RCP01 HRFT301JCA R CH IP 1/10 300 O HM J 2012 RCP02 HRFT104JCA R CH IP 1/10 100K O HM J 2012 RCP03 HRFT202JCA R CH IP...
  • Page 63 PART CODE PART NAM E PART DESCRIPTION REMARK RCV04 RD-4Z201J- R CA RBO N FILM 1/4 200 O HM J RCV05 HRFT512JCA R CH IP 1/10 5.1K O HM J 2012 RCV06 HRFT302JCA R CH IP 1/10 3K O HM J 2012 RCV07 HRFT100JCA R CH IP...
  • Page 64 PART CODE PART NAM E PART DESCRIPTION REMARK X501 5XEX3R579C CRYSTAL Q UARTZ HC-49U 3.579545M (TP) X502 4850L03110 RESO NATO R CERA CSB503F44 X601 4850L03810 RESO NATO R CERA CSB503F58 X701 5XY R03276C CRYSTAL Q UARTZ C-001R 32.768000KHZ 20P P X P01 5XJ14R318E CRYSTAL Q UARTZ...
  • Page 65 DTQ-29G1TS DTQ-29G1TSP LOC. PART CODE PART NAM E PART DESCRIPTION PART CODE PART NAM E PART DESCRIPTION C802 CEYD2E561D C ELECTRO 250V FHS 560M F (35X30) CEYN2G 221P C ELECTRO 400V LHS 220M F (35X30) CRT1 48596108760 A 68KTB140X010 P38...
  • Page 66 DTQ-29G1TS/TSP Q'ty REMARKS PART CODE PART NAME MATERIAL 4853526000 NYLON 66 HOLDER DEGAUSS 4853747800 RETA PCB NYLON 66 4855415800 SPEC PLATE 150ART P/E FILM 7122401612 SCREW TAPPING T2S TRS 4X16 MFZN BK 4857817610 CLOTH BLACK FELT T0.7 L=300 4852150401 COVER BACK HIPS BK FELT T0.7 L=400...
  • Page 67 DTQ-29G3TS/TSP MATERIAL REMARKS PART CODE PART NAME Q'ty 4855415800 SPEC PLATE 150ART P/E FILM 7122401612 SCREW TAPPING T2S TRS 4X16 MFZN BK 4857817810 CLOTH BLACK FELT T0.7 L=300 4852150221 COVER BACK HIPS BK FELT T0.7 L=300 4857817810 CLOTH BLACK 4855058402 DECO CTRL PVC T0.25 4856015820...
  • Page 69 DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “DAEWOOELEC” E-mail : G7F00E@web.dwe.co.kr FAX : 02) 360-8184 TEL: 02) 360-8178~8182 S/M NO. : CN217I-010 PRINTED DATE : APR. 1998...

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