Daewoo DTL- 25G6F Service Manual

Service Manual59 / 66 Cm STEREO Colour TelevisionCHASSIS : CP-776DAEWOO ELECTRONICS CO., LTD.http://svc.dwe.co.kr Sep,1999MODEL : DTL- 25G6FDTL- 25G

8DW5457 - AE1The DW5457-AE1 is a single chip teletext decoder for decoding World System Teletext data as well as VideoProgramming System(VPS), Prog

9- Box shadowing.- Up to 64 Characters in a display row.- Software selectable pixel frequency(12, 13.7, 16, 19.2 and 24MHz).Synchronization- Display s

10Pin Name Symbol Description1 P3.1 SYS SECAM-L’ OUT for switching SAW filter K9650-M- SECAM-L’ : H- SECAM- L : L2 P0.7/Open Drain BUSSTOP I2C BUS STO

11Pin Name Symbol Description33 P2.1/8 bit ADC KS Local KEY SCAN IN 34 P2.0/8 bit ADC S/SW S/SW IDENT IN for Automatic switching between TV/AV mode

12AT24C16-10PC (E2PROM)(1) Typical Features• IC Bus compatible• Low power CMOS Technology• Eight-byte page(1k, 2k), 16-byte page(4k, 8k, 16k) write bu

13TDA8844N2 (I2C-bus controlled PAL/NTSC/SECAM TV Processors) (1) General DescriptionThe TDA8844N2 is I2C-bus controlled single chip TV processors wh

14(3) Block Diagram

15(4) PIN DescriptionSYMBOLANDIFAUDIOEXTNCNCPLLLFIFVOSCLSDADECBGCHROMACVBS/YVP1CVBSINTGND1AUDIOOUTSECPLLCVBSEXTBLKINBOGOROBCLINRIGIBIRGBINLUMINLUMOUTB

TDA4470-M(Multistandard Video-if and Quasi Parallel Sound Processing)(1) Feature• 5V supply voltage; low power consumption• Active carrier generation

17(3) Block Diagram

CONTENTS 1. Specifications ...12. Safety Instruction ...33. Circuit Block Diagram ...

(4) Pin Description18Pin1,234, 9, 1656, 7810111213141517181920, 21222324252627, 28SymbolVi, SIF 1VSWGNDCAGCVi, VIFCAGCRtopItunVo, vidVSWVSWCb1CrefLFVS

19TDA6106Q ( Video Output Amplifier )(1) General DescriptionThe TDA6106Q is a monolithic video output amplifier (5MHz bandwidth) in a SIL 9 MPpackage,

20TDA8351 (DC-coupled vertical deflection circuit)(1) General Descriptionand 110 color deflection systems for field frequencies of 50 to 120 Hz.The ci

21STR-F6654 (Hybrid IC for a Switching Regulator)(1) General DescriptionThe STR-F6654 is a Hybrid IC with a built in power transistor and a separate e

22)(6) Electrical Characteristics of Power Transistor Part(Trl) (Ta=25 )ParameterOperation start voltageOperation stop voltageCircuit current in op

23TDA8133 (5.1V+8V regulator with Disable and Reset)(1) General DescriptionThe TDA8133 is a monolithic dual positive voltage regulator designed to pro

TDA 7269(10W+10W Stereo Amplifier with Mute & ST-BY)(1) Features20V.• Split supply• High output power 10+10W @ THD=10%, RL=8 , Vs= 14V• No pop at

25MSP3415D ( Multistandard Sound processor for NICAM & 2-Carrier )(1) Features• A single-chip Multistandard Sound Pressor for applications in anal

26(3) Description• Analog Sound IF - Input SectionThe input pins ANA_IN1+, ANA_IN2+ and ANN_IN-offer the possibility to connect two different sound IF

27• DQPSK-DecoderIn case of NICAM-mode the phase samples are decoded according the DQPSK-Coding scheme. The output of this block contains the original

1SpecificationsCRT 25” : A59EAK071X11 (PHILIPS)28” : A66EAK071X11 (PHILIPS) System PAL/SECAM-B/G, D/K, PAL-I, SECAM-L/L’, NTSC-3.58/4.43(Play back

28In case of power-on start or starting from standby, the IC switches automatically to the default configuration, shown in the figure above. This acti

29(4) Pin DescriptionPIN PIN NAME DESCRIPTION1 AUD_CL_OUT Audio clock output2 CW_CL Pay-TV control clock3 CW_DA Pay-TV control data4 D_CTR_OUT1 Digita

30PIN PIN NAME DESCRIPTION41 AHVSS Analog ground42 AGNDC Analog reference voltage high voltage part43 PDMC1 Capacitor to BAGNDI44 PDMC2 Capacitor to B

31GMS30112-R098 (4-bit Single Chip Microcomputer for Remote control)(1) General DescriptionThe GMS30112-R098 is 4-bit single chip CMOS microcomputer.(

32(4) Pin DescriptionPIN SYMBOL DESCRIPTION1,2,3,4 K0,K1,K2,K3 4 bit input port with built in pull up resistor5,6,7,8,9,10 D0,D1,D2,D3,D4,D5 10 bit ou

33Input signal ...PAL/CH5-Video : 8 step colour bar (87% AM)Audio : 1 KHz sinewave (60% FM)User’s control condition ...Contrast, Brightness, Col

345. SDAL 5457 (I701)3. TDA 4470-M(I603)Pin No.V(DC)13.223.233.44051.062.372.382.0901010Pin No.V(DC)111.8122.0134.5143.8152.5160174.2182.2193.4203.3Pi

356. AT24C16-10PC (I702)7. STR-F6654 (I801)Pin No.V(DC)12.620.13286.9417.4508. TDA 8133 (I801)Pin No.V(DC)210220230240252.3261.8270285.1Pin No.V(DC)2

36Vision IF AmplifierThe video IF signal(VIF) is fed through a SAW filter to the differential input(pin 6-7) of the VIF amplifier. This amplifierco

37AM DemodulatorThe alignment-free AM demodulator is realized by a synchronous detector. The modulated SIF signal from the SIFamplifier output

221 PIN EURO-SCARTPIN Signal Designation Matching Value1 Audio Out(linked with 3) 0.5Vrms,lmp<1 (RF 60% MOD)2 Audio In(linked with 6)3 Audio Out(li

38To protect the horizontal deflection transistor, the ho rizontal drive is switched off immediately when a power failure ( “ Power-On Reset “ bit POR

39RGB output and black current stabilizationThe colour difference signals (R-Y, B-Y) are matrixed with the luminance signal (Y) to obtain the RGBout o

40The supply voltage for the TDA8351 is 16V at pin 3.The flyback generator has a separate supply voltage of 45V on pin 6.Horizontal deflectionThe c

41Service Parts List 48B3228B07TRANSMITTER REMOCONR-28B07PTACPWD165 ACCESSORY AS DTL-28G2F10 4850Q00810 BATTERY R6P/LN10000 48586054K1MANUAL INSTRUCTI

42LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTIONC609 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TPC610 CEXF1H100V C ELECTRO 50V

43LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTIONCC524 HCFK224ZCA C CHIP CERA Y5V 50V 0.22MF Z 2012CC528 HCQK181JCA C CHIP CER

44LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTIOND808 DRGP15J--- DIODE RGP15JD809 DRGP15J--- DIODE RGP15JD810 D1N4937G-- DIODE

45LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTIONL501 5CPZ479K02 COIL PEAKING 4.7UH K (AXIAL 3.5MM)L601 5CPZ479K02 COIL PEAKIN

46LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTIONR422 RF-2Y169J- R FUSIBLE 1/2 1.6 OHM JR423 RF-4Y228K- R FUSIBLE 1/4 0.22 OHM

47LOC PART CODE PART NAME DESCRIPTION LOC PART CODE PART NAME DESCRIPTIONRC520 HRFT153JCA R CHIP 1/10 15K OHM J 2012RC524 HRFT102JCA R CHIP 1/10 1K OH

3• Safety InstructionWARNING: Only competent service personnel may carry out work involving the testing or repair ofthis equipment.1. Excessive high

48LOC PART CODE PART NAME DESCRIPTIONRCA17 HRFT750JCA R CHIP 1/10 75 OHM J 2012RCA18 HRFT750JCA R CHIP 1/10 75 OHM J 2012RCA19 HRFT750JCA R CHIP 1/10

49Mechanical Exploded View25G6F

5025G7F

5128G2FPART CODENO Q’tyPART NAMEMATERIAL REMARKS1 2234562223242526274855415800485818460048580373006520010100485821540048582138007891011121314151617181

5328G7F

5428G8FNOPART CODEPART NAMEQTYMATERIALREMARKS14852073001MASK FRONT4852155001COVER BACK1HIPS BK4854855900BUTTON POWERHIPS BK4854944500BUTTON CTRL1ABS B

55Printed Circuit BoardMain PCB

POWERSOUND/SIFVIDEO/CVBSVERTICALHORIZONTALCP-776 Chassis Schematic Diagram56

DAEWOO ELECTRONICS CO., LTD686, AHYEON-DONG MAPO-GUSEOUL, KOREAC.P.O. BOX 8003 SEOUL, KOREATELEX : DWELEC K28177-8CABLE : “DAEWOOELEC”E-mail : G7F00E@

Circuit Block Diagram4

51. AFT1.1 Standard B/G,D/K,I and L1) Set a Signal Generator with- RF FREQUENCY = 38.9 MHz, 5dBuV- System = PAL-B/G2) Connect the Signal Generator R

66.3 VERTICAL SIZEhas to be done in advance. 1) Apply a RETMA PATTERN Signal.2) Set the TV to NORMAL I mode.3) Adjust the upper part of the picturewi

7If EEPROM (I702) has been changed ;- Option data has to be changed and- all alignment function has to be readjusted .Service Remocon ( Part Code : 48