Daewoo DTH-25G1FST/FSP/FS Service Manual
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Daewoo DTH-25G1FST/FSP/FS Service Manual

Daewoo DTH-25G1FST/FSP/FS Service Manual

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Summary of Contents for Daewoo DTH-25G1FST/FSP/FS

  • Page 2: Table Of Contents

         SPECIFICATIONS ..........................5 BLOCK DIAGRAM ..........................6 1. SERVICE MODE ADJUSTMENT ........................ 7 2. VCO/AGC ADJUSTMENT ........................... 7 3. PIP VIDEO GAIN ADJUSTMENT ........................ 7 4. SOUND INPUT LEVEL ADJUSTMENT ....................... 7 ALIGNMENT INSTRUCTIONS ......................7 1. STEREO ADJUSTMENT ..........................8 2.

  • Page 3: Safety Checks

    PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO - VIDEO PRODUCTS CAUTION SUBJECT : X-RADIATION : D O N O T AT T E M P T TO M O D IF Y T H IS P R O D U C T IN A N Y W AY. N E V E R P E R F O R M C U S T O M IZ E D IN S TA L LAT IO N S W IT H O U T M A N U FA C - T U R E R °...
  • Page 4 PRODUCT SAFETY SERVICING GUIDELINES FOR COLOR TELEVISION RECEIVERS GRAPHIC SYM BOLS : CAUTION : Do not attem pt to m odify this product in any way. Unau- thorized m odifications will not only void the warranty, but m ay lead to your being liable for any resulting property dam age or user injury.
  • Page 5 SUBJECT : IMPLOSION 4. Wall and shelf m ounted installations using a comm ercial mounting kit, must follow the factory approved m ounting instructions. A receiver mounted to a shelf or platform must retain its original 1. All direct viewed picture tubes are equipped with an integral implo- feet(or the equivalent thickness in spacers) to provide adequate sion protection system , but care should be taken to avoid damage are flow across the bottom, bolts or screws used for fasteners...

  • Page 6: Specifications

    SPECIFICATIONS DTH-25G1FST DTH-29G1FST, DTH-29G 3FST MODEL DTH-25G1FSP DTH-29G1FSP, DTH-29G 3FS P DTH-25G1FS DTH-29G1FS, D TH-29G3FS T V S TA N D AR D N T SC /PA L-M /PAL-N M AIN S VO LTAG E 100~250V AC , 50/60H z P O W E R C O N SU M PT IO N 110W 120W...

  • Page 7: Block Diagram

    BLOCK DIAGRAM...

  • Page 8: Service Mode Adjustment

    ALIGNMENT INSTRUCTIONS - ALIGNMENT BY USER REMOCON 1. SERVICE MODE ADJUSTMENT How to enter into Service M ode. 1) Direct the rem ote control to the reception window of TV. 2) Push button of rem ote control in sequence. M U TE RE CALL M UTE 3) Then, the screen will appear as follows.

  • Page 9: Stereo Adjustment

    ALIGNMENT INSTRUCTIONS 2) Select the S10 of service m ode to display item s, then press the V OL buttons on the rem ote control. 3) Press buttons on the remote control to select S M ANUAL and press buttons on the remote control. 4) Press buttons on the rem ote control to select IN PUT LEVE L and press buttons to set TP2...
  • Page 10 ALIGNMENT INSTRUCTIONS 4)Press buttons on the rem ote control to select V CEN TER and press buttons on the rem ote control to adjust the horizontal line of RETMA PATTERNS center may meet with the mechanical CENTER of CRT. 5) Press the RECALL button on the rem ote control to store. V CENTER V CENTER 05 V SIZE...

  • Page 11: White Balance Adjustment

    ALIGNMENT INSTRUCTIONS 7-4. HORIZONTA L CENTER ADJUS TM ENT 1) Receive the RETM A PATTE RN signal. 2) Set the user control AUTO PICTU RE to STA NDARD m ode. 3) Select the S6 of service m ode to display item s, then press the VO L buttons on the rem ote control.

  • Page 12: Sub-Bright Adjustment

    ALIGNMENT INSTRUCTIONS 4) Adjust the R.G.B B IAS and G.B DR IVE, with buttons, in order that R.G .B of the High and Low BEAM m ay m eet with the CENTER LED of each m easuring instrum ent. 5) At this tim e, the memorized coordinates of the white balance tester, unless otherwise specified, use above coordinates and color temperature(9600°K 265X295).
  • Page 13 ALIGNMENT INSTRUCTIONS - ALIGNMENT BY SERVICE REMOCON 1. VCO/AGC ADJUSTMENT 1) Receive the CO LOR BAR signal. (INPUT LEVEL : 60 dB uV ) 2) Press S10 button on the SV C rem ote control to display M ENU . 3) Press buttons on the SVC rem ote control to select V CO or A GC 4) It w ill start auto adjustm ent if you press...
  • Page 14 ALIGNMENT INSTRUCTIONS 7. GEOMETRY 7-1. VERTICAL CENTER ADJUSTMENT 1) Receive the RETM A PATTERN signal. 2) Set the user control A UTO PIC TURE to STANDARD m ode. 3) Press S6 button on the SVC rem ote control to display M ENU 4) Press buttons on the S VC rem ote control to select V CENTER and press buttons on the...
  • Page 15 ALIGNMENT INSTRUCTIONS 7-6. SIDE PINCUSHION ADJUSTMENT 1) Receive the RETM A PATTERN signal. 2) Set the user control AUTO PICTURE to STAND ARD m ode. 3) Press S11 button on the SVC rem ote control to display M EN U 4) Press buttons on the SVC rem ote control to select S G PATTERN 8 and press VO L...
  • Page 16 ALIGNMENT INSTRUCTIONS - ABL S : ABL S tart point select(-0.01V:00, -0.11V:01, -0.3V:10, -0.45V:11). - 60H : vertical frequency of VID EO BLUE BA CK select. - R GB : PIP CO NTRAST adjust(0 ~ 63) - S W 38 : VIDEO variation (O N:0, OFF:1). 6) S6 K EY : geom etry adjust m ode - V C ENTER : V CEN TER adjust(0 ~ 7) - V S IZE : V SIZE adjust(0 ~ 63)

  • Page 17: Ic Description

    IC DESCRIPTION ♦ I701 - TM P87CM 38N (M -com ) 1. P in D escription NAME FUNCTION REMARK VS S G round TIN T T IN T control output P41(P W M 0) G round P42(P W M 1) G round P43(P W M 2) G round...
  • Page 18 IC DESCRIPTION NAME FUNCTION REMARK V S Y N C - Sync. Signal for Vertical position - 0 ~ 5V pulse -Detect input-A ctive Low V S Y N C - Sync. Signal for Vertical position - 0 ~ 5V pulse -Detect input-A ctive Low O S C 1 O SD oscillator...
  • Page 19 IC DESCRIPTION NA ME FUNCTION REM ARK Y s/Ym . T he term inal for sw itching of analog RG B M ode and fast half tone. A nalog R Input T he term inal for analog R G B signals input. A nalog G Input A nalog B Input R G B V...
  • Page 20 IC DESCRIPTION NA ME FUNCTION REM ARK V C O G N D T he term inal for G N D of V C O and S IF circuit. V C O T he term inal to be connected with a tank coil for IF VC O . V C O V C O V (9V )
  • Page 21 IC DESCRIPTION 3. Pin Description SYMB OL DESCR IPTIO N SYMBOL DESCRIPTION N .C R ead /w rite selection input N .C H U E H U E control input N .C i.c. N .C IDE N T C olor standard identification output IN T B Internal bias B LA N K...
  • Page 22 IC DESCRIPTION ♦ I601 - CX A2104S (US AUDIO M ULTIPLEXIN G D ECODER ) 1. PIN DESC RIPTION SYM BOL DESCRIPTION R O U T T V O U T right channel output pin. L O U T T V O U T left channel output pin. S DA S erial data I/O pin.
  • Page 23 IC DESCRIPTION ♦ IA 01 - CXA1114P(AUDIO VIDE O SW ITC H CO M PATIBLE W ITH I C BU S) 1. PIN D ESCRIPTION SYMBOL DESCRIPTION B IAS B uild up V cc/2 that becom es the internal bias reference. V IDE O 1 IN V IDE O 2 IN Video 1,2 and P IP, T V input pins.
  • Page 24 IC DESCRIPTION 2. PIN DESC RIPTION SYMBOL DES CRIPTION Inverting input 1 Inverting input 2 Inverting input 3 G N D G round non-inverting input Supply voltage C athode output 3 C athode output 2 C athode output 1 ♦ I602 - TD A2615(HI-FI AUD IO AM PLIFIER ) 1.

  • Page 25: Trouble Shooting Charts

    TROUBLE SHOOTING CHARTS 1. NO POWER...
  • Page 26 TROUBLE SHOOTING CHARTS Condition Step Check Point Rem ark C heck fuse next step R eplace fuse 250V 6.3A C heck bridge diode next step R eplace D 801 C heck D C Voltage(8V over) next step C heck/replace R 802,R 804,R 805 C heck ripple voltage(1.5V under) next step C heck/replace C 809...

  • Page 27: No Pip

    TROUBLE SHOOTING CHARTS 2. NO PIP Condition Step C heck Point Remark Check/replace R 101, D 101, L102, L105, C heck voltage(5V,9V,33V ) next step R107, D103, R416, R 102 C heck S D A,S C L next step Check/replace R C 104, I701, T U 01, R C 103 C heck #6 of IA 01 next step Check/replace Q C 102, Q C 103...

  • Page 28: No Picture

    TROUBLE SHOOTING CHARTS 3. NO PICTURE Condition Step Check Point Remark W aveform is fig.2 next step Check/replace TU 01 Check 33V next step Check/replace R107, D103, R416, R102 Check 5V next step Check/replace R101, D101 Check 9V next step Check/replace L102, L105 Check signal pulse next step...

  • Page 29: No Sound

    TROUBLE SHOOTING CHARTS 4. NO SOUND Condition Step Check Point Rem ark Check waveform next step Replace RC125, Z205, I501 Check waveform next step Replace I501 Check waveform P M 01 CO M P next step Check/replace QC602 Check RI,LI of PM 01 next step Check/replace I601 Check RO,LO of PM 01...

  • Page 30: Ic Dc Voltage Charts

    IC DC VOLTAGE CHARTS • Input signal - video : color BAR(PM 5518), PAL-N(60dBµV) -Audio : 100% M OD. 1khz sine w ave -external input : not connected • User's control condition - PICTURE : STAN DARD M ODE - SO UND : BASS,TREBLE, BALANC E ---- CENTER M TS---- M ONO VOLUM E ----- 22 S TEP •...
  • Page 31 IC DC VOLTAGE CHARTS ♦ I402 PIN NO V(DC) 10.9 27.6 26.9 14.3 ♦ I301 PIN NO V(DC) 14.1 28.4 27.6 ♦ I801(TA8427K) PIN NO V(DC) 277.8 ♦ IP 02(TDA8310A) PIN NO V(DC) PIN NO V(DC) PIN NO V(DC) ♦ IP 03(SDA9288X) PIN NO V(DC) PIN NO...
  • Page 32 IC DC VOLTAGE CHARTS ♦ I602(TDA2615) PIN NO V(DC) 11.5 11.6 11.6 11.6 11.6 23.1 11.5 ♦ I603(CXA2021S) PIN NO 14.5 V(DC) PIN NO V(DC) ♦ I506(AN5862K) PIN NO V(DC) ♦ IA 01(CXA1114P) PIN NO V(DC) PIN NO V(DC) ♦ I102 PIN NO V(DC) ♦...

  • Page 33: Exploded View

    ELECTRICAL PARTS LIST DTH-29G1FST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N Z Z100 48B3523B 04 TR ANS M ITT ER RE M OC ON R -23B 04 C307 CE YF1E332V C ELEC TR O...
  • Page 34 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N 1KA 7809--- IC R EG ULATO R KA 7809 M D01 4850M 01810 MO DU LE RF PH -R F-9504 0000A 4857013300...

  • Page 35: Electrical Parts List

    ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N Z Z200 PTM PJ2J638 PC B CH IP M OU NT B AS D TH-29G 1FS T CC715 HC TA J478M B C CH IP TAN TA L...
  • Page 36 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N JC 040 H RF8000-E A R CH IP 1/8 0 O HM 3216 QC602 T2SC 2412KB TR CH IP 2SC 2412K -T 146-BR JC 041...
  • Page 37 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N RC 434 H RF8102JEA R CH IP 1/8 1K O HM J 3216 RC739 HR FT103JC A R CH IP 1/10 10K O H M J 2012 RC 436...
  • Page 38 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N RCA 33 H RFT473JC A R CH IP 1/10 47K OH M J 2012 R411 RS 02Z182JS R M-O XID E FILM 2W 1.8K O HM J SM ALL RCA 34...
  • Page 39 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N C 421 C EXF1H478V C ELE CTR O 50V R SS 0.47M F (5X11) T P CA19 CE XF1E470V C ELEC TR O...
  • Page 40 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N Z205 5PX FSH4R 5D FILTE R CE RA SF SH 4.5M D B D804 DR GP15J--- DIOD E RG P15J Z Z200...
  • Page 41 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N J072 85801065G Y W IR E CO PP ER AW G22 1/0.65 TIN CO ATING J122 85801065GY W IR E C O PPE R AW G22 1/0.65 TIN CO ATIN G...
  • Page 42 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N R 708 R D-A Z103J- R CA RB ON FILM 1/6 10K O H M J ZZ300 PTPM MS J638 PCB P IP M AN UA L A S...
  • Page 43 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N JCP 09 H RFT000-CA R CH IP 1/10 0 O HM 2012 CP37 CE XF1E470V C ELEC TR O 25V R SS 47M F (5X 11) TP QCP 02 T2S C2412KB...
  • Page 44 ELECTRICAL PARTS LIST PART CO DE PART NA M E D ESC RIPTION PART CO DE PA RT NA ME DE SC RIPTIO N CC 636 H CTAJ478MB C CH IP TAN TAL 35V 0.47M F M 3216 A001 4859809524 PCB S OU ND 61X 54(197X246/9)D1B CC 637...
  • Page 45 A DIFFERENCE PARTS LIST BETWEEN DTH-29G1FST AND DTH-29G1FSP ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT M D01 4850M 01810 M O DU LE R F PH -RF -9504 EX CEPT R 128 RV5426222P R SEM I FIX ED RH 0638C-2.2K OH M E XC EPT M D01...
  • Page 46 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT JP 04 85801065GY W IRE C OP PE R AW G22 1/0.65 T IN C OAT ING E XCE PT C CP 38 H CQ K220JCA C CHIP CE RA 50V CH 22P F J 2012...

  • Page 47: A Difference Parts List Between

    A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT R 101 RD -2Z 201J- R CAR BO N F ILM 1/2 200 O HM J A DD R CP 47 H RFT103JCA R C HIP 1/10 10K O H M J 2012 E XCE PT...
  • Page 48 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT V901 4859618263 A 68K TB 191X006 M 16 E XCE PT ZZ 130 PT PKC PJ639 PA CKIN G A S DTH -25G1FST A DD ZZ132 58G 0000092...
  • Page 49 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT R C117 H RFT471JCA R CHIP 1/10 470 OH M J 2012 E XC EPT ZZ132 58G 0000092 CO IL D EG AU SSIN G D C-2500 A DD RC 127...
  • Page 50 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT M D01 4850M 02910 M O DU LE R F PH -RF -9505B AD D L809 5C PZ101K04 C OIL P EA KIN G 100UH K (A XIAL 10.5MM ) E XC EPT M 191...
  • Page 51 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT C P08 C EXF 1E470V C ELEC TRO 25V R SS 47M F (5X 11) T P EX CEPT C CP 17 HC TA F109M B C CHIP TAN TAL 16V 1M F M 3216 E XC EPT...
  • Page 52 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT RC P09 HR FT123JC A R CH IP 1/10 12K O HM J 2012 EX CEPT ZZ 200 PTP MJA J638 PC B P IP A XIA L AS DTH -29G1FST E XC EPT RC P05...
  • Page 53 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT M 381 4853816400 F RA ME SU B P CB FR HIP S B K AD D C CA 15 HC BK 102KC A C CHIP CE RA 50V X7R 1000P F K 2012 E XC EPT...
  • Page 54 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT R 711 R D-AZ102J- R C AR BO N F ILM 1/6 1K OH M J A DD M 791 4857923300 D OO R LO CK LA701(K IFC O) A DD R712...
  • Page 55 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ZZ200 PTPM J2J679 PC B PIP CH IP B AS D TH -29G 3F ST AD D CC A20 HC QK 101JC A C CH IP C ER A 50V C H 100PF J 2012 EX CEPT...
  • Page 56 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT M201 4852066011 MA SK FR ON T H IPS BK A DD L403 58H 1600022 C OIL H -LIN EA RIT Y TR L-2093 A DD M 211 4852150230...
  • Page 57 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT CA 20 C CZ B1H 101K C C ER A 50V B 100PF K (A XIA L) A DD CC P39 H CQ K220JCA C CH IP CE RA 50V CH 22P F J 2012 E XC EPT...
  • Page 58 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT RC P33 HR FT102JC A R CH IP 1/10 1K OH M J 2012 EX CEPT ZZ 200 PTFM SJJ679 M AS K FR ON T A S DTH -29G3FST A DD RC P34...
  • Page 59 A DIFFERENCE PARTS LIST BETWEEN ITEM CODE ITEM NAME DESCRIPTION ADD/EXCEPT Q CP 06 T2SA 812T2B TR CH IP 2SA 812-T2B E XCE PT Q CP 07 T2SA 812T2B TR CH IP 2SA 812-T2B E XCE PT Q CP 08 T2SA 812T2B TR CH IP 2SA 812-T2B...
  • Page 60 EXPLODED VIEW...
  • Page 61 EXPLODED VIEW...

  • Page 62: Pcb Layout

    EXPLODED VIEW...
  • Page 63 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) 360-8179~8180 PRINTED DATE : NOV. 1998...

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