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Daewoo DSC-3270E Service Manual

76 cm wide stereo colour television
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TSC130BEF0
September

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Summary of Contents for Daewoo DSC-3270E

  • Page 1 TSC130BEF0 September...
  • Page 4: Specifications

    2. Specifications Signal Designation Matching Value Audio Out (linked with 3) 0.5Vrms, Imp < 1 k (RF 60% MOD) Audio In (linked with 6) 0.5Vrms, Imp < 10 k Audio Out (linked with 1) 0.5Vrms, Imp < 1 k (RF 60% MOD) Audio Earth Blue Earth Audio in (linked with 2)
  • Page 5 3. Circuit Block Diagram...
  • Page 6: Alignment Instructions

    5. Alignment Instructions 4-1. User Remocon RV-22D TV......TXT TV......TXT PR UP....PAGE UP VOLUME..VOLUME DOWN DOWN VOLUME UP..VOLUME UP (CURSOR (CURSOR LEFT) RIGHT) MENU....MENU POWER...POWER NORMAL....Not used PR.......PAGE NUMBER NUMBER AV......Not used TXT........TV SOUND MODE..Not used SLEEP....Not used MUTE......MUTE Not used......SIZE Not used..CANCEL Not used......SIZE Not used.....HOLD...
  • Page 9 Alignment Instructions 4-6-3 VERTICAL SIZE * The VERTICAL CENTER adjustment has to be done in advance. 1) Apply a RETMA PATTERN Signal. 2) Set the TV to Normal I mode. 3) Adjust the VERTICAL SIZE of the picture with the select V.size by volume UP/DOWN keys.
  • Page 10 Alignment Instructions 4-8. WHITE BALANCE 4-8-1 RGB Reference R 4-8-2 Beam Reference LOW ( 288, 301 : 10Cd/ ) HIGH ( 288, 301 : 10Cd/ 4-8-3 Adjust G, B Gain with select Menu G,B of BIAS, DRIVE of select Menu so that R, G, B Bars are on the center position of the analog meter.
  • Page 11 5. IC description 5-1. ST92195 (1) General Description ports enter high impedance mode. A reset is necessary to 1.1 INTRODUCTION exit from Halt mode. The ST92195 microcnontoller is developed and manufac- 1.1.3 I/O Ports tured by STMicroelecrtonics using a proprietary n-well Up to 28 I/O lines are dedicated to digital Input/Output.
  • Page 12 IC description 1.1.9 PWM Output - Rounding, fringe, double width, double height, scrolling, cursor, full background colour, Control of TV settings is able to be made with up to eight semitransparent mode and reduced intensity colour 8-bit PWM outputs, with a frequency maximum of supported 23,437Hz at 8-bit resolution(INTCLK=12 MHz).
  • Page 13 IC description (3) Block Diagram...
  • Page 14 IC description (4) PIN DESCRIPTION RESET Reset (input, active low). The ST9+ is initialised HYNC/CSYNC Horizontal/Composite sync. Horizontal by the Reset signal. With the deactivation of RESET, or composite video synchronisation input to OSD. Posi- program execution begins from the Program memory tive or negativety.
  • Page 15 IC description 5-2. VPS 3215C(Video Processor) (1) Description including all substandards - 1 composite, 1 S-VHS input, 1 composite output The VPC 3215C is a high-quality, single-chip video front- - integrated high-quality A/D converters and associated end, which is targeted for 4:3 and 16:9, 100/120Hz TV clamp and AGC circuits sets.
  • Page 16 IC description Pin 12 - Vertical Sync Pulse, VS Pin 52 - VGAV-Input. This pin supplies the vertical sync signal. This pin is connected to the vertical sync signal of a VGA Pin 13 - Front Sync Pulse, FSY signal. This pin supplies the front sync information.
  • Page 17 IC description 5-3. CIP3250A (Component Interface Processor) (1) Description - digital matrix RGB => YUV (Y, B-Y, R-Y) The CIP 3250A is a new CMOS IC that contains on a sin- - luma contrast and brightness correction for signals from gle chip the entire circuitry to interface analog YUV/RGB/ analog input Fast Blank to a digital YUV system.
  • Page 18 IC description (4) Pin Description nal(pure binary) or the digital chroma V signal (2 ’s compo- Pin 1 - STANDBY Input nent). Leave vacant if not used. Via this input pin, the standby mode of the CIP 3250A is enabled. A high level voltage switches all outputs to Pin 29 - AVI Active Video Input tristate mode, and power consumption is signigicantly In a DIGIT 2000 application, this input can be connected...
  • Page 19 IC description Pin 44 to 51 - L0 to L7 Luma Input 66, and 68) must be connected together low resistive. The These are the inputs for the digital luma signal which must layout of the PCB must take into consideration the need be in pure binary coded format.
  • Page 20 IC description Pin 65 - GY Analog Green/Luma Input This input pin takes the AC-coupled analog compinent sig- nal Green or Luma. The amplitude is 1.0V maximum at 75 Ohms and a couplign capacitor of 220nF. Internally, the DC-offset of the input signal is adjusted via the program- mable internal clamping circuit.
  • Page 21 IC description 5-4. MSM5412222 ( 262, 214-Word X 12-Bit Field Memory ) (1) DESCRIPTION The OKI MSM541222 is a high performance 3-Mbit, 256K x 12-bit, Field Memory. It is especially designed for high-speed serial access applications such as HDTVs, conventional NTSC TVs, VTRs, digital movies and Multi-media systems.
  • Page 22 IC description (2) FEATURES • Single power supply : 5V 10% • 512 Rows x 512 Columns x 12 bits • Fast FIFO (First-In First-Out) operation • High speed asynchronous serial access Read / write cycle time 25 ns / 30 ns Access time 23 ns / 25 ns •...
  • Page 23 IC description (4) Pin Description Pin No. Pin Name Function SWCK Serial Write Clock SRCK Serial Read Clock Write Enable Read Enable Input Enable Output Enable RSTW Write Resert Clock RSTR Read Reset Clock 2,3,5,6,7,8,10,11,12,13,15,16 0 ~ D Data Input 29,30,32,33,34,35,37,38,39,40,42,43 0 ~ D Data Output...
  • Page 24 IC description 5-5. DDP 3310B (Display and Deflection Processor) Deflection processing (1) Description - scan velocity modulation output The DDP 3310B is a single-chip digital Display and Deflec- - high-performance H/V deflection tion Processor designed for high-quality backend applica- - EHT compensation for vertical / East/West tions in 100/120MHz TV sets with 4:3- or 16:9 picture - soft start/stop of H-Drive tubes.
  • Page 25 IC description The vertical protection circuitry prevents the picture tube (4) Pin Description from burn-in in the event of a malfunction of the vertical deflection stage. If the peak-to-peak value of the vertical Pin 1 - Supply Voltage, Output Pin Driver VSUPP* sawtooth signal is too small, the RGB output signals are This pin is used as supply for the following digital output blanked.
  • Page 26 IC description These pins are used to switch the RGB outputs to the Together with this pin, it can be used to drive symmetrical external analog RGB inputs. FBLIN1 switches the RIN1, deflection amplifiers. GIN1 and BIN1 inputs, FBLIN2 switches the RIN2, GIN2 and BIN2 inputs.
  • Page 27 IC description Pin 65, 66 XTAL2 / XTAL1 Pin 51 VSUPD* - Crystal Output / Input - Supply Voltage, Digital Circuitry These pins are connectecd to an 5-MHz crystal oscillator. Pin 52 GNDD* - Ground, Digital Circuitry The security unit for the HOUT signal uses this clock sig- Digital Circuitry Input Reference nal as reference.
  • Page 30: Service Parts List

    PEMPMSD018 PCB MAIN DSC-3270E X601 5XE18R432E CRYSTAL QUARTZ HC-49/U 18.43200MHZ 30PPM MANUAL AS ZZ200 PEMPJ2D018 PCB MAIN CHIP B AS DSC-3270E C453 CMXL2E124K C MYLAR 250V MEU 0.12MF K CC101 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012 C856...
  • Page 31 Service Parts List PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC CC107 HCBK104KCA C CHIP CERA 50V X7R 0.1MF K 2012 CC723 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 CC108 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 CC801 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012...
  • Page 32 R M-OXIDE FILM 2W 1K OHM J (TAPPING) C853 CMXL2E104K C MYLAR 250V MEU 0.1MF K ZZ200 PEMPJRD018 PCB MAIN RADIAL AS DSC-3270E C854 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP C100 CXRH1H150J C CERA RH 50V 15PF J (TAPPING)
  • Page 33 Service Parts List PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC ZZ200 PEMPJAD018 PCB MAIN AXIAL AS DSC-3270E J039 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING A001 4959805724 PCB MAIN 330 X 246 J040 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING C115...
  • Page 34 Service Parts List PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC J091 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J143 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J092 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J144 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J093 85801065GY WIRE COPPER...
  • Page 35 PART-DESC PART-CODE PART-NAME PART-DESC R606 RD-2Z470J- R CARBON FILM 1/2 47 OHM J ZZ300 PEPWMSD018 PCB POWER MANUAL AS DSC-3270E R608 RD-AZ152J- R CARBON FILM 1/6 1.5K OHM J CF410 CMYH3D752J C MYLAR 2KV BUP 7500PF J R609 RD-AZ152J- R CARBON FILM 1/6 1.5K OHM J...
  • Page 36 TT2 RND 3X10 MFZN C896 CEXF1C471V C ELECTRO 16V RSS 470MF (10X12.5)BK Q404C 4857619500 INSU PLATE SILICON RUBBER T0.3 ZZ200 PEPWJBD018 PCB POWER M-10 AS DSC-3270E Q408 TKTD2058Y- KTD 2058-Y E101 4856310300 EYE LET BSR T0.2 (R1.6) Q408A 4857027607 HEAT SINK...
  • Page 37 BSR T0.2 (R2.3) R834 RF01Z128J- R FUSIBLE 1W 0.12 OHM J (TAPPING) 4856310600 EYE LET BSR T0.2 (R2.3) ZZ200 PEPWJRD018 PCB POWER DSC-3270E 4856310600 EYE LET BSR T0.2 (R2.3) RADIAL AS 4856310600 EYE LET BSR T0.2 (R2.3) CF401 CEXF1C101V C ELECTRO 16V RSS 100MF (6.3X11) TP...
  • Page 38 R451 RV5426103P R SEMI FIXED ENV-DJAA03B14 10K OHM B J020 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING ZZ200 PEPWJAD018 PCB POWER AXIAL AS DSC-3270E J021 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING A001 4959805624 PCB POWER 330 X 246 J022...
  • Page 39 Service Parts List PART-CODE PART-NAME PART-DESC PART-CODE PART-NAME PART-DESC J029 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING RF413 RD-AZ103J- R CARBON FILM 1/6 10K OHM J J030 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING RF414 RD-AZ103J- R CARBON FILM 1/6 10K OHM J J031 85801065GY WIRE COPPER...
  • Page 40 XD01 5XE20R250E CRYSTAL QUARTZ HC-49/U 20.2500MHZ 30PPM JCD12 HRFT000-CA R CHIP 1/10 0 OHM 2012 ZZ200 PEVDJ2D018 PCB VIDEO CHIP B AS DSC-3270E QCD01 T2SC2412KB TR CHIP 2SC2412K-T146-BR CCD01 HCFH105ZCA C CHIP CERA 25V Y5V 1MF Z 2012 QCD50 T2SC2412KB...
  • Page 41 YAW025-11 RCD90 HRFT103JCA R CHIP 1/10 10K OHM J 2012 PW998 4859235120 CONN WAFER YW025-08 ZZ200 PEVDJ1D018 PCB VIDEO CHIP A AS DSC-3270E PW999 4859238620 CONN WAFER YPW500-02 A001 4959802924 PCB VIDEO AS 143 X 246 Q908 TKTA1659Y- KTA 1659-Y...
  • Page 42 L906 5MC0000100 COIL BEAD HC-3550 SW707 5S50101Z90 SW TACT THVV502GDA L910 5MC0000100 COIL BEAD HC-3550 ZZ200 PEUNJAD018 PCB UNION AXIAL AS DSC-3270E L911 5MC0000100 COIL BEAD HC-3550 A001 4959805824 PCB UNION 203 X 246 L912 5MC0000100 COIL BEAD HC-3550 C908...
  • Page 43 Z02W5.6V R983 RD-AZ561J- R CARBON FILM 1/6 560 OHM J DC929 DZ02W5R6VA DIODE CHIP ZENER Z02W5.6V ZZ600 PEAVMSD018 PCB A/V MANUAL AS DSC-3270E DC930 DZ02W5R6VA DIODE CHIP ZENER Z02W5.6V J901 4959102050 JACK PIN BOARD DSSM-9516 DC933 DZ02W5R6VA DIODE CHIP ZENER Z02W5.6V...
  • Page 44 R CHIP 1/10 2.4K OHM J 2012 RC928 HRFT331JCA R CHIP 1/10 330 OHM J 2012 ZZ200 PEAVJ1D018 PCB A/V CHIP A AS DSC-3270E RC929 HRFT242JCA R CHIP 1/10 2.4K OHM J 2012 A001 4959806024 PCB A/V 170 X 186...
  • Page 45 8. Mechanical Exploded View R E V LIST O F M O D IFICA TIO N R EA SO N O F M O D IFICA TIO N D ATE N AM E APP R . N o. P AR T C O D E P AR T N AM E Q'TY M ATE R IAL...
  • Page 46 PAGE O F DRAWIN G E XTERNAL VIEW 1 O F 1 SCALE 1/ 1 DIG ITAL T V RESEARC H CENTER M ODEL DSC - 3270 E NA M E 49 500022 RE FERENCE DAEWOO ELECTRONICS CO., LTD. A3(420X297)
  • Page 47 Mechanical Exploded View...
  • Page 48 9. Printed Circuit Board POWER PCB (FRONT)
  • Page 49 Printed Circuit Board POWER PCB (REAR)
  • Page 50 Printed Circuit Board MANI PCB (FRONT)
  • Page 51 Printed Circuit Board MANI PCB (REAR)
  • Page 52 Printed Circuit Board UNION PCB (FRONT) UNION PCB (REAR)
  • Page 53 10. Schematic Diagram...
  • Page 54 Schematic Diagram...
  • Page 55 Schematic Diagram...
  • Page 56 Schematic Diagram...
  • Page 57 Schematic Diagram...
  • Page 58 Schematic Diagram...
  • Page 59 Schematic Diagram...
  • Page 60 686, 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...