Durabrand DBTV1300 Service Manual
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Durabrand DBTV1300 Service Manual

Durabrand DBTV1300 Service Manual

Color television receiver
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DBTV1300

SERVICE MANUAL

COLOR TELEVISION RECEIVER
ORIGINAL
MFR'S VERSION G
Design and specifications are subject to change without notice.

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Summary of Contents for Durabrand DBTV1300

  • Page 1: Service Manual

    DBTV1300 SERVICE MANUAL COLOR TELEVISION RECEIVER ORIGINAL MFR’S VERSION G Design and specifications are subject to change without notice.

  • Page 2: Servicing Notices On Checking

    SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, Safety is secured against an X-ray by consider- they are indicated with the labels or seals on the ing about the cathode-ray tube and the high cabinet, chassis and parts.

  • Page 3: Table Of Contents

    CONTENTS SERVICING NOTICES ON CHECKING ...................... A1-1 HOW TO ORDER PARTS ........................... A1-1 IMPORTANT ..............................A1-1 CONTENTS ..............................A2-1 GENERAL SPECIFICATIONS ........................A3-1~A3-4 DISASSEMBLY INSTRUCTIONS ....................... SERVICE MODE LIST ..........................CONFIRMATION OF USING HOURS ......................NOTE FOR THE REPLACING OF MEMORY IC ..................ELECTRICAL ADJUSTMENTS ........................

  • Page 4: General Specifications

    GENERAL SPECIFICATIONS G-1.Outline of the Product 13 inch(335.4mmV):Measured diagonally Color CRT 90 degree deflection G-2.Broadcasting System System G-3.Color System NTSC SECAM or Monochrome signal G-4.NTSC Playback(PAL 60Hz) G-5.NTSC 3.58+4.43/PAL60Hz G-6.Antenna Input Impedance VHF/UHF 75 ohm unbalanced G-7.Tuner and Receiving Channel Tuner : Contactless Electric Tuner Oscar(W/O HYPER) Oscar(W/ HYPER)
  • Page 5 GENERAL SPECIFICATIONS G-17.Protector: Power Fuse G-18.Regulation Safety NEMKO FEMKO DEMKO IEC65 SEMKO HOMOLO SABS SISIR AS3159 DENTORI GOST NONE Radiation SABA HOMOLO CISPR13 DENTORI AS/NZS NONE X-Radiation DHHS DENTORI NONE G-19.Temperature Operation ˚C ~ 40 ˚C Storage ˚C ~ 60 ˚C G-20.Operating Humidity Less than G-21.Clock and Timer...
  • Page 6 GENERAL SPECIFICATIONS G-26.OSD Language OSD Language Setting Not Applicable G-27.Speaker : P o s i t i o n Front Side Bottom Size inches 8 ohm x Power W (Typical) G-28.EXT Speaker G-29.Carton Master Carton: Need No Need Content: ---- Material: ---- / ----...
  • Page 7 GENERAL SPECIFICATIONS G-32.Switch Front Power(Tact) Channel Up/Reset Volume Up/Set Up System Select Channel Down/Enter Volume Down/Set Down Main Power SW Sub Power Menu:Vol Up + Vol Down Rear AC/DC TV/CATV Selector Degauss Main Power S W G-33.Magnetic Field BV : +0.45G BV : +0.35G...

  • Page 8: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction to 1. REMOVAL OF ANODE CAP remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.

  • Page 9: Service Mode List

    SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter the Service Mode, press both set key and remote control key for more than 1 second. Set Key Remocon Key Operations Releasing of V-CHIP PASSWORD.

  • Page 10: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL 2. BASIC ADJUSTMENTS ADJUSTMENTS 2-1: RF AGC DELAY Read and perform these adjustments when repairing the Place the set with Aging Test for more than 15 minutes. circuits or replacing electrical parts or PCB assemblies. Receive an 80 dB monoscope pattern.
  • Page 11 ELECTRICAL ADJUSTMENTS 2-9: OSD HORIZONTAL Activate the adjustment mode display of Fig. 1-1. Press the VOL. UP/DOWN button on the remote control until the difference of A and B becomes minimum. (Refer to Fig. 2-3) Fig. 2-1 00 OSD 110% Fig.
  • Page 12 ELECTRICAL ADJUSTMENTS PURITY AND CONVERGENCE 3-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator. minutes before performing the following adjustments.

  • Page 13: Major Components Location Guide

    MAJOR COMPONENTS LOCATION GUIDE VR501 R428 HS402 TP401 TP001 TU001 FB401 CP601 FOCUS VOLUME SCREEN VOLUME MAIN J801 TP023 TP022 D3-1...

  • Page 14: Block Diagram

    BLOCK DIAGRAM TU001 CHROMA IC CH. UP IC601 M61203CFP X602 3.579545MHz IC351 AN7511 VOL. UP X' TAL AUDIO OUT MICON IC SOUND AMP SP351 CH. DOWN RF AGC OUT IC101 OEC7045A CF601 SAW FILTER VIF IN (1) VOL. DOWN Q606 P02/AUDIO MUTE VIF IN (2) REG.

  • Page 15: Printed Circuit Boards Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT (INSERTED PARTS) SOLDER SIDE R500_1 L501_1 CP501 CP502 4A125V F501 FH502 FH501 C503 C123 W804 D502 W068 R506 R542 Q802 C801 C514 Q803 CP801 D503 Q502 D506 C501 Q801 D512 D508 W026 T502 TP024 W074 R802 IC506 TP023 TP022...
  • Page 16 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE R604 C113 R603 C138 C127 R620 R608 IC101 C701 IC601 R122 R420 R632 R639 C411 R602 R359 R353 R357 R513 R512 R813 R131...
  • Page 17 MICON/TUNER SCHEMATIC DIAGRAM ACCESSORY (MAIN PCB) TU001 TECC1040PG32D ANT001 HPAS-2S780 TM101 R25-1323 TP001 JWF-50K-1 C003 FROM/TO CHROMA OS101 PIC-28143SY-2 L001 10uH 0607 TUNER+5V R002 R001 W801 18K 1/2W 18K 1/2W I2C_OFF MICON IC IC101 OEC7045A R123 C137 OSD_R P50/H.SYNC RED R 4.7K R122 C129...
  • Page 18 CHROMA SCHEMATIC DIAGRAM (MAIN PCB) FROM POWER UNREG+12V Q605 Q604 2SD734 2SD734 Q606 2SD734 11.3 R639 CF604 EFCT4R5MW5 Q603 2SD734 D606 FROM SOUND/AV C647 R615 CF603 MTZJ6.8B VIDEO_IN EFCT4R5YS5A R608 R638 1.8K C661 0.01 Y C638 R634 FROM/TO SOUND/AV R611 R612 R642 D605...
  • Page 19 POWER SCHEMATIC DIAGRAM (MAIN PCB) CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE 4A 125V (F501) FUSE. ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE N’UTILISER QUE DES FUSIBLE DE MEME 4A 125V TYPE 4A 125V (F501). TO SOUND/AV R517 D505...
  • Page 20 DEFLECTION/CRT SCHEMATIC DIAGRAM (MAIN PCB) CP802A CP802B CD802 51048-1000 51048-1000 2E0A3001 FROM CHROMA CLAMP CLAMP CLAMP CLAMP CLAMP G.OUT G.OUT G.OUT G.OUT G.OUT R.OUT R.OUT R.OUT R.OUT R.OUT B.OUT B.OUT B.OUT B.OUT B.OUT V-OUT IC IC401 LA78040 HEATER HEATER HEATER HEATER THERMAL PUMP...
  • Page 21 SOUND/AV SCHEMATIC DIAGRAM (MAIN PCB) J703 HTJ-032-05AW TO CHROMA R703 AUDIO_IN 820 1/4W VIDEO_IN J702 HTJ-032-05AY CC002 TP-1S-05 HEADPHONE_JACK J352 HSJ1403-01-010 C352 R356 27 1/2W CD351 CP352 CH12403B SPEAKER TID-X02P-B2 SP_OUT SOUND_GND SP351 NS-300RW 8 OHM FROM POWER SOUND_GND SOUND+B FROM MICON/TUNER R359 AUDIO_MUTE...

  • Page 22: Micon/Tuner

    WAVEFORMS MICON/TUNER 11 1V 20µs/div 200mV 5ms/div 0.5V 20µs/div 12 1V 20µs/div 0.5V 20µs/div 200mV 20µs/div 3 200mV 20µs/div 20V 20µs/div 1V 20µs/div DEFLECTION/CRT 200mV 5ms/div 14 0.5V 5ms/div 9 200mV 20µs/div CHROMA 15 20V 20µs/div 0.5V 5ms/div 0.5V 2ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 23: Sound/Av

    WAVEFORMS 16 2V 20µs/div 21 50V 20µs/div 26 500mV 20us/div 22 50V 20µs/div 200V 20µs/div SOUND/AV 0.5V 1ms/div 10V 5ms/div 10V 5ms/div 1V 1ms/div 50V 20µs/div 25 500mV 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 24: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) L503 FB401 V801 TU001 J352 PCB010 (MAIN PCB) SP351...

  • Page 25: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION A3J011C720 CABINET,FRONT ASS'Y 701WPJA917 CABINET,FRONT 735WPA0396 SPEAKER HOLDER COATING CLIP HEAT SINK 713WPA0090 GUIDE,REMOCON 735WPA0381 BUTTON,FRAME 735WPA0382 BUTTON,HOLDER 702WPA0683 CABINET,BACK 7225520002 SHEET,RATING 723000A930 FILM,DECORATION 7230006818 SHEET,CAUTION 741WUA0019 SPRING,EARTH 800WQ00044 FELT SHEET 5x50xT0.5 800WQ00045 FELT SHEET 5x150xT0.5...

  • Page 26: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REF. NO PART NO. DESCRIPTION RESISTORS DIODES ! R401 R4X5T4104F R, METAL 100K OHM 1/4W ! D503 D2WTRM11C0 DOIDE, SILICON RM11C-EIC ! R405 R4X5T4183F R, METAL 18K OHM 1/4W ! D504 D2WTRM11C0 DOIDE, SILICON RM11C-EIC ! R406...
  • Page 27 ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION J A C K S ! J352 0602121012 JACK, RCA 3.5 HSJ1403-01-010 J702 060G421016 RCA, JACK HTJ-032-05AY J703 060G421017 RCA, JACK HTJ-032-05AW ! J801 066X120014 SOCKET, CRT HPS3200-010501 SWITCHES SW101 0504201T31 SWITCH, TACT SKHVBED010 0504101T34 SWITCH, TACT EVQ21505R...
  • Page 28 M3J0-11C SPEC.NO. K073007 O/R NO.

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