Daewoo DVT-14/20H1(T)D Service Manual
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Daewoo DVT-14/20H1(T)D Service Manual

Daewoo tv / vcr combination service manual
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Service Manual
TV / VCR Combination
CHASSIS : CP-062
MODEL :
DVT-14/20H1(T)F
DVT-14/20H1(T)P
DVT-14/20H1(T)D
DVT-14H2(T)FG/(T)PG DVT-14H2(T)FB/(T)PB
SPECIFICATIONS
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr
S/M No:TCP062PEF0
DVT-14/20H2(T)F
DVT-14/20H2(T)P
DVT-14/20H2(T)D
Aug.2000

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Summary of Contents for Daewoo DVT-14/20H1(T)D

  • Page 1 Service Manual TV / VCR Combination CHASSIS : CP-062 MODEL : DVT-14/20H1(T)F DVT-14/20H1(T)P DVT-14/20H1(T)D DVT-14H2(T)FG/(T)PG DVT-14H2(T)FB/(T)PB SPECIFICATIONS DAEWOO ELECTRONICS CO., LTD http : //svc.dwe.co.kr S/M No:TCP062PEF0 DVT-14/20H2(T)F DVT-14/20H2(T)P DVT-14/20H2(T)D Aug.2000...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SAFETY INSTRUCTION ... 2 SPECIFICATION ... 3 CIRCUIT BLOCK DIAGRAM ... 4 ALIGNMENT INSTRUCTIONS... 5 SERVICE REMOCON DIAGRAM ... 8 SCHEMATIC DIAGRAM ... 11 EXPLODED VIEW ... 13 PRINTED CIRCUIT BOARD... 15 SERVICE PARTS LIST ... 16 Different parts list for size ...

  • Page 3: Safety Instruction

    SAFETY INSTRUCTION WARNING : BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAUTION" AND "PRODUCTION SAFETY NOTICE" BELOW. X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazard ous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit The nominal value of the highvoltage of this receiver is 23-25KV(14"),25-28KV(20") at max.

  • Page 4: Specification

    MAX. RECORDING TIME WITH FULLSIZE CASSETTE NOTE Design and specifications can be subjected to change without notice. DVT-14/20H1(T)F, DVT-14/20H2(T)F, DVT-14/20H1(T)P, DVT-14/20H2(T)P, DVT-14/20H1(T)D, DVT-14/20H2(T)D, DVT-14H2(T)FG/(T)PG , DVT-14H2(T)FB/(T)PB PAL-B/G(F MODEL) PAL-I/II(P MODEL) PAL/SECAM-B/G, D/K (D MODEL) 14” : A34JLL90X01, A34AGT13X, A33LPE02X01, A34EAC01X06 20”...

  • Page 5: Circuit Block Diagram

    CIRCUIT BLOCK DIAGRAM...

  • Page 6: Alignment Instructions

    ALIGNMENT INSTRUCTIONS 1. MAIN TUNER AGC 1) Set a Pattern Generator with RF level 62 6 2 dBuV, 210.25 MHz. 2) Connect a OSCILLOSCOPE PROBE to P101 ( TUNER AGC INPUT ). 3) Adjust AGC UP/DOWN KEY the voltage drop about 1V DC over below it's maximum voltage. 2.
  • Page 7 5.5 HORIZONTAL CENTER 1) Apply a RETMA PATTERN SIGNAL. 2) Adjust picture centering with H-CENTER +/- KEY. 6. DECK ADJUSTMENT 6-1. X-POSITION AND P2,P3 ADJUSTMENT 1) Adjust point : X-POSITION Checking point : oscilloscope ch1 = H/SW (PY03 #2) oscilloscope ch2 = PB ENVE (PY03 #4) Triggering : CH1 Measuring Equipment : oscilloscope, path jig Mode : PLAYBACK,ATK OFF...
  • Page 8 ALIGNMENT INSTRUCTIONS 6-2. AUTO PG ADJUSTMENT 1) After adjustment of 6-1. Press the " REC." button. 2) Eject the Test tape. 6-3. AZIMUTH ADJUSTMENT 1) Adjust point : AZIMUTH SCREW Checking point : SOUND OUTPUT (P601) Measuring Equipment : oscilloscope or audio level meter. Mode : PLAYBACK Test tape : DP-2 (6KHz) * Adjustment Procedure...

  • Page 9: Service Remocon Diagram

    SERVICE REMOCON 1. DIAGRAM LANGUAGE V-SLOPE ATK OFF To enter the " SERVICE MODE" Press NORMAL-> AV->SLEEP->CLEAR->POWER buttons in regular sequency within 10seconds using USER REMOCON after setting ST-BY. V-CENT V-SIZE H-CENT S-CORR AGC+ SCREEN SUB AGC AGC- SHIPPING R-46C04 5'th 4'th 3'rd...
  • Page 10 2. HOW TO CHECK TV SECTION WITHOUT VCR DECK If you want to check TV section without DECK mechanism, then please perform in this order. 1. Pull out the power cord. 2. Remove the VCR DECK mechanism. 3. Supply the main power. ( Main sw on ) 4.
  • Page 11 SERVICE REMOCON 13. STILL Press this button to enter the PAUSE/STILL mode. 14. STOP Press this button to enter the STOP mode. 15. REW/REV Press this button to enter the REW/REV mode. 16. PLAYBACK Press this button to enter the PLAYBACK mode. 17.

  • Page 12: Schematic Diagram

    SCHEMATIC DIAGRAM...
  • Page 13 SCHEMATIC DIAGRAM...

  • Page 14: Exploded View

    EXPLODED VIEW 1. DVT-14H1F...
  • Page 15 EXPLODED VIEW 2. DVT-20H1F...

  • Page 16: Printed Circuit Board

    PRINTED CIRCUIT BOARD...

  • Page 17: Service Parts List

    SERVICE PARTS LIST CAUTION “ I“ is safety component, so it must be used the same component. " " is recomendable part for stock. PART CODE PART NAME ZZ100 48B4446C04 TRANSMITTER REMOCON ZZ110 PTACPWA643 ACCESSORY AS 4850Q00910 BATTERY 4850A03310 ANT ROD M821 4858213800 BAG INSTRUCTION...
  • Page 18 PART CODE PART NAME I826 1LE33CZ--- IC REGULATOR I901 PTB3SW1300 HEAT SINK ASS`Y 1TDA6107Q- IC VIDEO 0000A 4857031300 HEAT SINK 0000B 7174301011 SCREW TAPPTITE IN02 1K1A6801K- IC MOTOR DRIVER IQ01 1KRT30---- IC PREAMP JS01 4859200401 SOCKET RGB L801 5PLF24A1-- FILTER LINE M193 4851942300 DECK AS...
  • Page 19 SERVICE PARTS LIST PART CODE PART NAME QC501 T2SC1623T2 TR CHIP QC502 T2SC1623T2 TR CHIP QC503 T2SA812T2B TR CHIP QC504 T2SC1623T2 TR CHIP QC505 T2SC1623T2 TR CHIP QC506 T2SA812T2B TR CHIP QC508 T2SC1623T2 TR CHIP QC605 T2SC1623T2 TR CHIP QC702 T2SC1623T2 TR CHIP QC703...
  • Page 20 PART CODE PART NAME P802B 4857417500 TERM PIN P904 485923162S CONN WAFER PY03 485923202S CONN WAFER R809 RS02Z228JS R M-OXIDE FILM R832 RS02Z828JS R M-OXIDE FILM ZZ200 PTMPJRA643 PCB MAIN RADIAL AS C102 CEXF1H100V C ELECTRO C105 CEXF1H101V C ELECTRO C121 CEXF1E470V C ELECTRO...
  • Page 21 SERVICE PARTS LIST PART CODE PART NAME CY03 CEXF1H109A C ELECTRO CY05 CEXF1C101A C ELECTRO CY08 CXCH1H509D C CERA CY10 CEXF1H479A C ELECTRO CY16 CEXF1C101A C ELECTRO CY17 CEXF1C100A C ELECTRO CY18 CEXF1C220A C ELECTRO CY21 CEXF1H109A C ELECTRO CY24 CEXF1C470A C ELECTRO CY26...
  • Page 22 PART CODE PART NAME C543 CCZF1H103Z C CERA C546 CBZR1C392M C CERA C548 CCZB1H102K C CERA C605 CCZB1H102K C CERA C606 CCZB1H102K C CERA C607 CCZB1H102K C CERA C608 CCZB1H102K C CERA C616 CCZF1H103Z C CERA C618 CCZF1H103Z C CERA C715 CCZF1H103Z C CERA...
  • Page 23 SERVICE PARTS LIST PART CODE PART NAME D805 DBYV96E--- DIODE D806 DUZ13BM--- DIODE ZENER D807 D1N4937G-- DIODE D808 D1N4937G-- DIODE D809 D1N4937G-- DIODE D822 D1N4937G-- DIODE D823 D1N4937G-- DIODE D824 D1N4937G-- DIODE D825 D1N4937G-- DIODE D827 D1N4148--- DIODE D828 D1N4937G-- DIODE D831 D1N4148---...
  • Page 24 PART CODE PART NAME R555 RD-AZ331J- R CARBON FILM R556 RD-AZ102J- R CARBON FILM R557 RD-AZ103J- R CARBON FILM R558 RD-AZ102J- R CARBON FILM R559 RD-AZ242J- R CARBON FILM R575 RD-AZ223J- R CARBON FILM R601 RD-AZ392J- R CARBON FILM R604 RD-AZ472J- R CARBON FILM R605...
  • Page 25 SERVICE PARTS LIST PART CODE PART NAME RN07 RD-AZ472J- R CARBON FILM RN08 RD-AZ221J- R CARBON FILM RN09 RD-AZ153J- R CARBON FILM RN10 RD-AZ332J- R CARBON FILM RN11 RD-AZ103J- R CARBON FILM RN12 RD-AZ103J- R CARBON FILM RN13 RD-AZ103J- R CARBON FILM RN14 RD-AZ221J- R CARBON FILM...
  • Page 26 PART CODE PART NAME RY14 RD-AZ472J- R CARBON FILM RY15 RD-AZ102J- R CARBON FILM RY16 RD-AZ102J- R CARBON FILM RY17 RD-AZ221J- R CARBON FILM RY19 RD-AZ820J- R CARBON FILM RY20 RD-AZ750J- R CARBON FILM RY23 RD-AZ392J- R CARBON FILM RY24 RD-AZ102J- R CARBON FILM RY25...
  • Page 27 SERVICE PARTS LIST PART CODE PART NAME L311 5CPZ109M04 COIL PEAKING R301 RD-4Z101J- R CARBON FILM R302 RD-4Z101J- R CARBON FILM R311 RD-AZ152J- R CARBON FILM R312 RD-AZ152J- R CARBON FILM R315 RD-4Z562J- R CARBON FILM R316 RD-4Z272J- R CARBON FILM R317 RD-AZ564J- R CARBON FILM...

  • Page 28: Different Parts List For Size

    THE DIFFERENT PARTS LIST FOR SIZE LOC. PART NAME ANT ROD C418 C MYLAR CRT1 CRT AS M191 BUTTON CTRL M201 MASK FRONT M211 COVER BACK M211A SCREW TAPPTITE M281 DOOR F/L M381A SCREW TAPPTITE M481 BUTTON POWER M482 BUTTON POWER A M561 MARK BRAND M782...
  • Page 29 SERVICE PARTS LIST LOC. PART NAME SP01 SPEAKER SP01A SCREW SPKR FIX COIL DY V901 CRT BARE ZZ110 ACCESSORY AS ZZ120 COVER BACK AS ZZ130 PACKING AS ZZ131 CRT GROUND NET ZZ132 COIL DEGAUSSING ZZ140 CABINET AS ZZ200 MASK FRONT AS ZZ200 PCB MAIN (RHU) AS ZZ200...

  • Page 30: The Different Parts List For System

    THE DIFFERENT PARTS LIST FOR SYSTEM LOC. PART NAME SF501 FILTER SAW Z501 FILTER CERA Z503 FILTER CERA Z504 FILTER CERA Z502 FILTER CERA R553 R CARBON FILM C554 C CERA PW000 CORD POWER PWC1 CORD POWER AS I501 IC VIDEO THE DIFFERENT PARTS LIST FOR TELETEXT LOC.

  • Page 31: Circuit Description

    CIRCUIT DESCRIPTION Video 1. Outline This video circuit uses a LA71598SM Super A/V 1 chip IC made by SANYO which includes luminance and color pro cessor, CCD and PREAMP. This IC has 100 pin, but only 79 pin(10~74 pin and 81~94 pin) are related to Video circuit among them. 2.Video circuit A.
  • Page 32 CIRCUIT DESCRIPTION B. REC mode a) Luminance Signal Processing The signal is to pin 38,34 of ICY01, and one is selected to input to AGC AMP. This input signal performs sync AGC and peak AGC. And then , it is input to the 6dB divider where its level is educed to 0.5V. LPF and 1H Delay separates luminance signal from output signal of the divider.
  • Page 33 CIRCUIT DESCRIPTION REC Luminance process VIDEO REC EQ CHROMA ICY01 CLAMP DETAIL EN HANCER FM MOD W/D CLIP SP/LP Fig. 2 REC Luminance Process Appendix DELAY COMB FILTER NL EMPH MAIN EMPH...
  • Page 34 CIRCUIT DESCRIPTION REC color process ICY01 Video ACC AMP BURST EMPHASIS CCD LPF COMB FILTER MAIN COLOR CONVERT LUMINANCE SP/LP Fig . 3 REC color process Appendix COMB FILTER COLOR KILLER AGC AMP...
  • Page 35 CIRCUIT DESCRIPTION C. PB mode a) Luminance Signal Processing The recorded signal is picked up by the head, and amplified 60dB by PRE AMP part. The amplified FM signal is supplied to FM AGC. It is automatically controlled by FM AGC to adjust output tolerance of CH1 and CH2. This signal is FM EQ and phase compensation It is sent to Double Limiter circuit which removes AM noise, prevents over-modulation and lets the signal input to FM DEMOD.
  • Page 36 CIRCUIT DESCRIPTION PB Luminance process PB Luminance process HEAD SP/LP PB FM AGC PB FM EQ PHASE COMP QCY01 ICY01 SUB LPF MAIN DEEMPHASIS FM DEMOD DOUBLE LIMITER QCY02 Fig .4 PB Luminance Process Appendix COMB CLAMP Y/C MIX QV INSERT Y- LPF QCY03...
  • Page 37 CIRCUIT DESCRIPTION PB color process HEAD C. LPF AGC AMP MAIN CONVERT BPF 1/2 ICY01 Y/C MIX QV INSERT VIDEO AMP C. COMB COMB AMP QCY05 Fig . 5 PB Color Process Appendix CCD LPF...

  • Page 38: Audio-Line-Out

    CIRCUIT DESCRIPTION Linear Audio 1 Outline This audio circuit uses a LA71598SM Super A/V 1 chip IC made by SANYO. The major features of this IC is that REC/EE mode, PB/EE mode, SP/LP mode and audio input selection are controlled by parallel. 21 pin ( 1~9 pin, 75~80 pin, and 95~100 pin ) are related to Audio circuit.
  • Page 39 CIRCUIT DESCRIPTION 3 Explanation by Mode A. Mute Control ( pin 10 ) Control Port Mute B. Explanation by mode a) EE mode ( Rear line IN ) The line input signal divided by RU29 and RU30 is input to pin 76 of IC, and output to pin 96 through ALC circuit and Line Amp.
  • Page 40 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 : djkoo@web.dwe.co.kr TEL : 82-2-360-7806 FAX : 82-2-360-7877...

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