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Daewoo DUA-3291GB Service Manual

Digital television chassis: cp-770
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Service Manual

Digital Television

CHASSIS :
Model :
DUA-3291GB
DUA-3270GB
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.
P/N : TCP770FEF0
CP-770
JAN. 2006

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Summary of Contents for Daewoo DUA-3291GB

  • Page 1: Service Manual

    Service Manual Digital Television CHASSIS : CP-770 Model : DUA-3291GB DUA-3270GB 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 1. SPECIFICATION 2. BLOCK DIAGRAM 3. EEPROM PRESETTING DATA 4. SERVICE REMOTE CONTROL(R-30SVC6) 5. ADJUSTMENT METHOD 6. TROUBLE-SHOOTING 7. SCHAMETIC DIAGRAM 8. PRINTED CIRCUIT BOARD 9. MECHANICAL EXPLODED DIAGRAM 10. PART LIST...

  • Page 3: Specification

    1. Specification MODEL DUA-3291GB, DUA-3270GB Power Source AC 220V ~ 240V, 50Hz Power Consumption 120W Picture Tube 76cm Audio Output 7W(L) + 7W(R), 8 DIMENSIONS(mm) Weight(kg) BAND I : CH2 ~ CH4 BAND II : CH5 ~ CH12 Reception Channel CANLE BAND : S1’...

  • Page 4: Block Diagram

    2. Block Diagram 1) Analog Part...
  • Page 5 Block Diagram 2) Digital Part...

  • Page 6: Eeprom Presetting Data

    3. EEPROM Presetting DATA Vert. Position Virtual Dolby Option Vert. Amplitude +206 Nicam Sensitivity Vert. DVB offset AUDIO Prescale FM_AM SETTINGS VERTICAL Vert. Zoom +230 Prescale NICAM +300 GEOMETRY Vert. Linearity Prescale SCART(AV) +430 Vert. S-Correction Prescale DVB +255 Vert. Blanking Start +341 M Japan Vert.

  • Page 7: Service Remote Control(R-30Svc6)

    4. Service Remote Control (R-30SVC6) * FACTORY REMOCON SYMBOL FUNCTION POWER POWER ON/OFF S. STOP POWER SERVICE BUS START/STOP PR ¡ª PR UP(IN SVC MODE) NORMAL PR ¡ PR DOWN(IN SVC MODE) EX-FACTORY S.STOP VOL MAX VOL MAX VOL MIN VOL MIN HEAT RUN SVC ON/OFF...

  • Page 8: Adjustment Method

    5. Adjustment Method “** This Adjustments should be done by using SVC Remote Controller “”R-30SVC6””” MICOM PROGRAMMING -Micom should be programmed by using PC with operation tests. -The specific s/w and adapter are needed for micom programing. SCREEN Adjustment (1) Press the SVC key of the SVC remote controller ( R-30SVC6) (2) Adjust Screen Volume of FBT until the horizontal line is just disappeared.
  • Page 9 Alignment Instruction Horizontal Width Adjustment -Pattern : RETMA -Adjust with H-WIDTH +/- keys so that the Left and the Right ‘3’ marks of the RETMA pattern may be located at the boundaries of the screen. PINCUSHION(E/W) Adjustment ( Pattern : PAL CROSS HATCH ) (1) Parabola Adjustment -Adjust with AFT/PART keys so that the Left and Right Edge’s Vertical Line may be straight .

  • Page 10: Trouble-Shooting

    6. Trouble Shooting 1. No Raster Normal Abnormal Check Stand-By LED Check Stand-By Circuit Power On Check Check R817 check with Remote controller DC 3.3V Remote controller And IR Circuit Check Check/Replace Q809~Q810, Q809, Q810, I806 DP142 And peripheral parts Replace I804 Check I804 or Check/Replace D807...
  • Page 11 Trouble shooting Chats Check secondary voltage Check #2, #21, #24, #25, #43, #46, #65 #68~#70, #87 of I501 Check #63~#64 of I501 Check #71 of I504 Check #31~#32 of I501 Check #33 of I501 Check P902~P904 (B+, Micom_SDA/SCL, UART_TX/RX, Boot Option) Abnormal Abnormal Abnormal...
  • Page 12 Trouble Shooting Charts 2. No Picture(Raster OK) (1)Analogue Mode Check/Replace Check Signal Q902~Q904 Check #6~#9 of I901 #16~#18 of I501 And Voltage/Heater Line Check/Replace Check/Replace Check/Replace SCL/SDA, 5V Line of Tuner Q502~Q504 CRT Board And 5V Line Check/Replace SF01 Check/Replace I501 Check/Replace ATT Cable...
  • Page 13 Trouble Shooting Charts Normal (2)Digital Mode Abnormal Check/Replace Check Signal Check SCL,SDA #54~#55 of I501 #119~#120 of I100 And 5V Line of Tuner Check/Replace Sheck Signal SCL,SDA,X-TAL #16~#18 of I501 Check/Replace And B+ Line of I501 SCL,SDA B+ Line, And XI, Reset of I300 Check/Replace Check #6~9 of I901 Q502~Q504...
  • Page 14 Trouble Shooting Charts (3)External AV Mode Normal Abnormal Check External Connection Check Signal Check #50,#52~#53, #56~#59 External equipment of I501 Check Signal Check/Replace #16~#18 of I501 I501 Check/Replace Check Q502~Q504 #6~#8 of I901 And 5V Line Check/Replace Q902~Q904 Video, Heater voltage Line Check/Replace CRT Board...
  • Page 15 Trouble Shooting Charts 3. No Vertical Scanning(One Horizontal Line Raster) Normal Abnormal Check DY Connector Check/Replace Check D407,D408,D313 Input Voltage of I301 (14V, 45V Line) Check Check/Replace Check Vertical Drive pulse(Vert +) C516~C517,R527~R528, #4 of I501 #2 of I301 R310~R311,R350~R351 Check/Replace B+, X-TAL, SCL, SDA of I501...

  • Page 16: No Sound

    Trouble Shooting Charts 4. No Sound Normal Abnormal Check Mute or Volume Level Check Speaker And Connection Check Audio_L/R Check (#6,#12 of I602) #84~#85 of I501 RF(Analog) External(AV) RF(Digital) Check Check Check #78~#79 #72~#73 #76~#77 of I501 of I501 of I501 Check/Replace Check Check/Replace...
  • Page 17 Trouble Shooting Charts 5. Remote Control Unit Trouble Normal Abnormal Check Replace Battery Battery of Remote Control Check IR of Preamp Check/Replace And Vcc of Preamp (IC01) Preamp(IC01) Check/Replace #37 of I501 6. No Ci Initialization Check connection of MAIN and DECODER Check voltage of +1.8V line.
  • Page 18 Trouble Shooting Charts 7. No Digital Audio Out(LR, SPDIF) Check connection of MAIN and DECODER PCB Check SOUND OUT pin : CN300 — no.12,13pin(LR), no.15 pin(SPDIF)

  • Page 19: Schametic Diagram

    7. Schametic Diagram 1) ALALOG MAIN PART...
  • Page 20 Schametic Diagram 2) POWER PART...
  • Page 21 Schametic Diagram 3) DIGITAL MAIN PART-1...
  • Page 22 Schametic Diagram 3) DIGITAL MAIN PART-2...
  • Page 23 Schametic Diagram 3) DIGITAL MAIN PART-3...

  • Page 24: Printed Circuit Board

    8.Printed Circuit Board 1. Main PCB...
  • Page 25 Printed Circuit Board 2. Power PCB...
  • Page 26 Printed Circuit Board 3. Digital PCB(Top)
  • Page 27 Printed Circuit Board 4. Digital PCB(Bottom)
  • Page 28 Printed Circuit Board 6. Union PCB 5. CRT PCB...

  • Page 29: Mechanical Exploded Diagram

    9.Mechanical Exploded Diagram...

  • Page 30: Part List

    PCB MAIN MANUAL AS DUA-3291FLS-S M353 4853535600 HOLDER CORD NYROLN 66 2193110001 SOLDER WIRE SN-3.0AG (NP303T) 3.0 M561 48556293SD02 MARK BRAND “DAEWOO 25””29””32”” NEW” 2291050619 FLUX SOLDER SV-PBF-05 (0.824) M681 4856812001 TIE CABLE NYLON66 DA100 2291050314 FLUX SOLVENT IM-1000 M682...
  • Page 31 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK PA502 4950712005 CONNECTOR YH025-12+YST250+ULW=100 CCV02 HCBK472KBA C CHIP CERA 50V X7R 4700PF K 1608 R588 RS02Y229J- R M-OXIDE FILM 2W 2.2 OHM J CCV03 HCBK221KBA C CHIP CERA...
  • Page 32 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK RCV10 HRFT330JBA R CHIP 1/10 33 OHM J 1608 2TM10006LB TAPE MASKING 3M #232-MAP-C 6.2X2000M RCV12 HRFT330JBA R CHIP 1/10 33 OHM J 1608 A001 4859811193 PCB MAIN...
  • Page 33 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK J049 85801060GY WIRE COPPER 1/0.6 TIN COATING J134 85801060GY WIRE COPPER 1/0.6 TIN COATING J051 85801060GY WIRE COPPER 1/0.6 TIN COATING J135 85801060GY WIRE COPPER 1/0.6 TIN COATING...
  • Page 34 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK J212 85801060GY WIRE COPPER 1/0.6 TIN COATING L516 85801060GY WIRE COPPER 1/0.6 TIN COATING J213 85801060GY WIRE COPPER 1/0.6 TIN COATING L517 5CPZ100K02 COIL PEAKING 10UH 3.5MM K (LAL02TB)
  • Page 35 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK CC150 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC380 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC151 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 CC381...
  • Page 36 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK CC143 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 RA100 HRTS8E330J R CHIP ARRAY 1/16 8P 33 OHM J 3216 CC144 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608...
  • Page 37 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK RC323 HRFT472JBA R CHIP 1/10 4.7K OHM J 1608 D820 DRGP30J—- DIODE RGP30J RC324 HRFT472JBA R CHIP 1/10 4.7K OHM J 1608 D830 DRGP30J—- DIODE...
  • Page 38 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK 4856310300 EYE LET BSR T0.2 (R1.6) C667 CCXB1H472K C CERA 50V B 4700PF K (TAPPING) 4856310300 EYE LET BSR T0.2 (R1.6) C668 CMXM2A224J C MYLAR 100V 0.22MF J...
  • Page 39 Part List LOC PART CODE PART NAME PART DESCRIPTION REMARK LOC PART CODE PART NAME PART DESCRIPTION REMARK J014 85801060GY WIRE COPPER 1/0.6 TIN COATING R401 RD-4Z272J- R CARBON FILM 1/4 2.7K OHM J J015 85801060GY WIRE COPPER 1/0.6 TIN COATING R402 RD-4Z220J- R CARBON FILM...
  • Page 40 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA PRINTED DATE : JAN. 2006...

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Dua-3270gb

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