Daewoo DTW-28W2F Service Manual
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Daewoo DTW-28W2F Service Manual

Daewoo DTW-28W2F Service Manual

66 cm wide stereo
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Service Manual

Colour Television 66 Cm WIDE STEREO
CHASSIS : WP-811N
MODEL : DTW - 28W2F
DTW - 2810F

Specifications

CRT
28" : W66ECK001X44
SYSTEM
PAL / SECAM-B/K, PAL-I/I', SECAM-L/L', NTSC-3.58/4.43 (Play back)
MAIN VOLTAGE
230V AC, 50Hz
Stand-by mode : 2.0 Watts
POWER CONSUMPTION
Normal operating mode : 100 Watts
SOUND OUTPUT
10 + 10 Watts, 10% THD at RF 60% mod. (1 kHz )
12W 8 ohm x 2 EA
SPEAKER
75 ohm unbalanced input ( Din Standard )
ANTENNA IMPEDANCE
TUNING SYSTEM
Frequency Systhesize (FS) Tuning System
TUNER
DT5-BF14D
NUMBER OF PROGRAM
100 program
21 pin EURO-SCART jack (AV input, TV output, RGB input)
AUX. TERMINAL
21 pin EURO-SCART jack (AV input, S-VHS input)
RCA type AV input jack
Headphone jack (3.5 mm )
JACK AUDIO TERMINAL (AUDIO OUT L, R)
R-22D05(or R-23D05) with 2 "AAA" type batteries
REMOTE CONTROL
TOP(5 Page memory) & FLOF(7 Page memory)
TELETEXT
- West option : English, German/Dutch/Flemish, French, Italian, Spanish/Portuguese,
- East option : Polish, Czech/Slovak, Rumanian, Servo-croat, German/Dutch/Flemish,
- West : English, German, French, Italian, Spanish, Nethelands, Swedish
OSD LANGUAGE
- East : English, Russian, Polish, Rumanian, Czech, Hungarian
 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 (http://svc.dwe.co.kr).
DAEWOO ELECTRONICS CO., LTD
S/M No: TWP811MEF0
Swedish/Finnish/Danish, Hungarian, Rumanian, Turkish
French, Estonian, Lettish

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Summary of Contents for Daewoo DTW-28W2F

  • Page 1: Service Manual

    : 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 (http://svc.dwe.co.kr). DAEWOO ELECTRONICS CO., LTD...

  • Page 2: Table Of Contents

    All manuals and user guides at all-guides.com TABLE OF CONTENTS SAFETY INSTRUCTION ........................2 SPECIFICATIONS ..........................3 CIRCUIT BLOCK DIAGRAM ......................4 ALIGNMENT INSTRUCTION ......................5 SCHEMATIC DIAGRAM ........................11 EXPLODED VIEW ..........................13 PRINTED CIRCUIT BOARD ......................15 SERVICE PARTS LIST ........................16 APPENDIX ("...

  • Page 3: Safety Instruction

    All manuals and user guides at all-guides.com SAFETY INSTRUCTION WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment X-RAY RADIATION PRECAUTION 1. Excessive high voltage can prodece potentially haz- 2. The only source of X-RAY Radiation in this TV receiver ardous X-RAY RADIATION.

  • Page 4: Specifications

    All manuals and user guides at all-guides.com 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 <...

  • Page 5: Circuit Block Diagram

    All manuals and user guides at all-guides.com CIRCUIT BLOCK DIAGRAM...

  • Page 6: Alignment Instruction

    All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS User Remocon 1. R-22D05...
  • Page 7 All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS 2. R-23D05...
  • Page 8 All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS * How to Enter the “ Service Mode ” with user remocon. 1) Set the TV Pr 91 2) Sharpness “ MIN “ control. 3) Push the Red, Green, Menu buttons in regular sequency within 5 seconds after setting TV power off. 4) You can see the Menu of “...
  • Page 9 All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS Standard B/G, D/K, I and L 1) Set a Signal Generator with - RF FREQUENCY = 38.9 MHz, - RF OUTPUT LEVEL = 80 5dBuV - Pattern = Color Bar - System = PAL-B/G 2) Connect the Signal Generator RF Output to TP2 (Tuner IF Output).
  • Page 10 All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS 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 11 All manuals and user guides at all-guides.com ALIGNMENT INSTRUCTIONS WHITE BALANCE 1. RGB Reference R 2. Beam Reference LOW ( 288, 301 : 10Cd/ ) HIGH ( 288, 301 : 10Cd/ 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 12: Schematic Diagram

    All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM...
  • Page 13 All manuals and user guides at all-guides.com...

  • Page 14: Exploded View

    All manuals and user guides at all-guides.com EXPLODED VIEW DTW-28W2F...
  • Page 15 All manuals and user guides at all-guides.com EXPLODED VIEW DTW-2810F...

  • Page 16: Printed Circuit Board

    All manuals and user guides at all-guides.com PRINTED CIRCUIT BOARD...

  • Page 17: Service Parts List

    4859102620 JACK ANT 3104.308.73221 YH025- P603A 4850704S04 CONNECTOR M821 4858213800 BAG INSTRUCTION L.D.P.E T0.05X250X400 04+YST025+ULW=400 ZZ120 PTBCSHD359 COVER BACK AS DTW-28W2F YH025- P702A 4850703S21 CONNECTOR M211 4852155102 COVER BACK HIPS GY (778A) 03+YST025+ULW=600 M211D 4857817630 CLOTH BLACK FELT 400X20X0.7 YH025-...
  • Page 18 All manuals and user guides at all-guides.com SERVICE PARTS LIST LOC. PART CODE PART NAME DESCRIPTION LOC. PART CODE PART NAME DESCRIPTION C822 CH1AFE472M C CERA AC 4KV 4700PF M KX DE1610 L103 5.80E+42 COIL AFT TRF-A005 D401 DDTV32F--- DIODE DTV32F L401 58H0000054...
  • Page 19 50V Y5V 0.01MF Z 2012 PCB CHIP MOUNT B CC708 HCFK474ZCA C CHIP CERA Y5V 50V 0.47MF Z 2012 ZZ200 PTMPJ2D359 DTW-28W2F CC709 HCQK820JCA C CHIP CERA 50V CH 82PF J 2012 CC101 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012...
  • Page 20 All manuals and user guides at all-guides.com SERVICE PARTS LIST LOC. PART CODE PART NAME DESCRIPTION LOC. PART CODE PART NAME DESCRIPTION QC610 T2SC2412KB TR CHIP 2SC2412K-T146-BR RC544 HRFT102JCA R CHIP 1/10 1K OHM J 2012 QC611 T2SA812T2B TR CHIP 2SA812-T2B RC546 HRFT202JCA...
  • Page 21 HRFT124JCA R CHIP 1/10 120K OHM J 2012 E134 4856310600 EYE LET BSR T0.2 (R2.3) ZZ200 PTMPJ0D359 PCB MAIN (RHU) AS DTW-28W2F E135 4856310600 EYE LET BSR T0.2 (R2.3) C403 CEXF1C102C C ELECTRO 16V RUS 1000MF (10X20) TP E136 4856310600 EYE LET BSR T0.2 (R2.3)
  • Page 22 5PXF1B471M FILTER EMI CFI 06 B 1H 470PF C655 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP ZZ200 PTMPJAD359 PCB MAIN AXIAL AS DTW-28W2F C658 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP 2TM14006LB TAPE MASKING 3M #232 6.0X2000M C662...
  • Page 23 All manuals and user guides at all-guides.com SERVICE PARTS LIST LOC. PART CODE PART NAME DESCRIPTION LOC. PART CODE PART NAME DESCRIPTION DA15 DUZ5R6BM-- DIODE ZENER UZ-5.6BM(TAPPING) C719 CCZB1H220K C CERA 50V B 22PF K C808 CCZB1H681K C CERA 50V B 680PF K (AXIAL) DA16 DUZ5R1B--- DIODE ZENER...
  • Page 24 HCBK104KCA C CHIP CERA 50V X7R 0.1MF K 2012 PCB MAIN MODULE CCD51 HCFK105ZCA C CHIP CERA 50V Y5V 1MF Z 2012 ZZ400 PTMAMSD359 DTW-28W2F MANU CCD52 HCFK105ZCA C CHIP CERA 50V Y5V 1MF Z 2012 PD01 4859279820 CONN WAFER...
  • Page 25 R CHIP 1/10 10 OHM J 2012 RCD16 HRFT162JCA R CHIP 1/10 1.6K OHM J 2012 PCB MAIN MODULE ZZ200 PTMAJRD359 DTW-28W2F RADIAL RCD17 HRFT363JCA R CHIP 1/10 36K OHM J 2012 RCD18 HRFT102JCA R CHIP 1/10 1K OHM J 2012...
  • Page 26 RS03 RD-4Z471J- R CARBON FILM 1/4 470 OHM J RS05 RD-4Z331J- R CARBON FILM 1/4 330 OHM J PCB MAIN MODULE ZZ200 PTMAJ1D359 DTW-28W2F CHIP ID01 1VPC3215CT IC CHIP VIDEO VPC3215C ID02 1C1P3250AT IC CHIP VIDEO CIP3250A ID03 1MSM54122Q IC MEMORY...
  • Page 27 All manuals and user guides at all-guides.com 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...

  • Page 28: Ic Description

    All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION 5-1. ST92195 (1) General Description 1.1 INTRODUCTION the CPU and its peripherals stop operation and the I/O The ST92195 microcnontoller is developed and manufac- ports enter high impedance mode. A reset is necessary to tured by STMicroelecrtonics using a proprietary n-well exit from Halt mode.
  • Page 29 All manuals and user guides at all-guides.com APPENDIX 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 30 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION (3) Block Diagram...
  • Page 31 All manuals and user guides at all-guides.com APPENDIX 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 32 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION 5-2. VPS 3215C(Video Processor) (1) Description including all substandards - 4 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 33 All manuals and user guides at all-guides.com APPENDIX 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.
  • Page 34 All manuals and user guides at all-guides.com APPENDIX 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 35 All manuals and user guides at all-guides.com APPENDIX 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.
  • Page 36 All manuals and user guides at all-guides.com APPENDIX 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 37 All manuals and user guides at all-guides.com APPENDIX 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 38 All manuals and user guides at all-guides.com APPENDIX 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 39 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION (2) FEATURES •Single power supply : 5V •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 40 All manuals and user guides at all-guides.com APPENDIX 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 D 0 ~ D 11 Data Input...
  • Page 41 All manuals and user guides at all-guides.com APPENDIX 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...
  • Page 42 All manuals and user guides at all-guides.com APPENDIX 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...
  • Page 43 All manuals and user guides at all-guides.com APPENDIX 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.
  • Page 44 All manuals and user guides at all-guides.com APPENDIX IC DESCRIPTION Pin 65, 66 - Crystal Output / Input XTAL2 / XTAL1 Pin 51 - Supply Voltage, Digital Circuitry VSUPD* These pins are connectecd to an 5-MHz crystal oscillator. Pin 52 - Ground, Digital Circuitry GNDD* The security unit for the HOUT signal uses this clock sig- Digital Circuitry Input Reference nal as reference.

  • Page 45: Ic Dc Voltage Charts

    All manuals and user guides at all-guides.com APPENDIX IC DC VOLTAGE CHARTS * Input signal PAL/CH5 - Video : 8 step colour bar ( 87% AM ) Audio : 1KHz sinewave ( 60% FM ) * User’ s control condition Contrast, Brightness, Colour, Volume Controls-max.
  • Page 46 All manuals and user guides at all-guides.com APPENDIX IC DC VOLTAGE CHARTS 4. TDA 7269 (I601) Pin No. V(DC) -15.0 -0.1 +15.0 -0.1 +8.5 -15.0 5. ST92195 (I701) Pin No. V(DC) Pin No. V(DC) Pin No. V(DC) Pin No. V(DC) Pin No.
  • Page 47 All manuals and user guides at all-guides.com APPENDIX IC DC VOLTAGE CHARTS 9. P503 Pin No. V(DC) Pin No. V(DC) -0.3 12.1 10. P504 Pin No. V(DC) Pin No. V(DC)

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