Daewoo DTC-14D9T Service Manual Download

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PIN

SIGNAL DESCRIPTION

MATCHING VALUE

Audio Output Right

0.5 Vrms, Impedance < 1k‰, (RF 54% Mod)

Audio Input Right

0.5Vrms, Impedance > 10k‰

Audio Output Left

0.5 Vrms, Impedance < 1k‰, (RF 54% Mod)

Audio Earth

Blue Earth

Audio Input Left

0.5Vrms, Impedance > 10k‰

Blue Input

0.7Vpp + 0.1V, Inpedance 75‰

Slow Switching

TV : 0 to 2V, AV : 4.5 to 12V, Impedance > 10k‰

Green Earth

N.C

Green Input

0.7Vpp + 0.1V, Impedance 75‰

N.C

Red Earth

Blanking Earth

Red Input

0.7Vpp 0.1V, Impedance 75‰

Chroma Input

3dB for a luminance signal of 1 Vpp

Fast Switching

0 to 0.4V : Logic :"0", 1 to 3V : Logic "1", Impedance 75‰

Video Out Earth

Video In Earth

Video Output

1 Vpp

3dB, Impedance 75‰

Video Input

1 Vpp

3dB, Impedance 75‰

Common Earth

21Pin EURO-SCART

SPECIFICATIONS

Summary of Contents for DTC-14D9T

Page 1: ...al Input 75 Ohm unbalanced Channel coverage off air channels S cable channels and hyperband Tuning system Ferquency synthesiser tuning system 14 34cm Visual screen size 20 48cm 21 51cm Channel indication On screen display Program selection 200 Programmes RCA jack Audio input and Vidio input ERUO SCART Jack Audio Video and R G B input Auxiliary Outpup Terminal Sloe and fast swtching SVHsin Audio Vi...

Page 2: ...TIONS 5 1 Service mode 5 2 Microcontroller configuration 5 3 TV SET Alignment 5 6 SCHEMATIC DIAGRAM 7 PRINTED CIRCUIT BOARD 8 EXPLODED VIEW 9 12 SERVICE PARTS LIST 13 25 FUNCTIONAL DESCRIPTION 1 6 IC DESCRIPTION 7 44 1 TABLE OF CONTENTS APPENDIX Appendix is provide only by internet http svc dwe co kr ...

Page 3: ...glass fragments will be violently expelled 2 If any Fuse in this TV receiver is blown replace it with the FUSE specified in the Replacement Parts List 3 When replacing a high wattage resistor oxide metal film resistor in circuit board keep the resistor body 10 mm away from the circuit board 4 Keep wires away from high voltage or high temperature components 5 This receiver must operate under AC 230...

Page 4: ...Inpedance 75 8 Slow Switching TV 0 to 2V AV 4 5 to 12V Impedance 10k 9 Green Earth 10 N C 11 Green Input 0 7Vpp 0 1V Impedance 75 12 N C 13 Red Earth 14 Blanking Earth 15 Red Input 0 7Vpp 0 1V Impedance 75 Chroma Input 3dB for a luminance signal of 1 Vpp 16 Fast Switching 0 to 0 4V Logic 0 1 to 3V Logic 1 Impedance 75 17 Video Out Earth 18 Video In Earth 19 Video Output 1 Vpp 3dB Impedance 75 20 V...

Page 5: ...4 CIRCUIT BLOCK DIAGRAM ...

Page 6: ... Alignment 1 G2 alignment Set TV in NORMAL I mode Receive the RETMA PATTERN or color bar Press the SVC button in Service Remocon Press the Screen button in Service Remocon Turn round the screen volume of FBT until the horizontal line of screen disappear Press the Screen button to exit Screen mode 2 White balance Select a dark picture and adjust Black G and Black R to the desired colour temperature...

Page 7: ...Shift S Correction and Slope to compensate for vertical distortion 5 Horizontal picture centering Adjust H Shift to have the picture in the center of the screen 7 AGC Adjust the antenna signal level to 64dB V 2 Set RF AGC to 0 Increase RF AGC level and stop when the level on pin 6 of I501 goes below 2 5 Vdc ALIGNMENT INSTRUCTIONS ...

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Page 13: ...90 BK 21 11 10 9 8 7 5 6 4 3 20 18 19 17 15 16 14 13 12 4855617500 MARK BRAND CU AU ABS BK 21D8 CM 907S CORE 4854803201 4855548000 DECO SENSOR PC SMOG 4856013610 SCREW SPKR FIX L 16 A 17 4858311110 SPEAKER 12W8OHM SP 58126F 4856716000 SPRING SWPA PIE 0 5 4855415800 MIAN CHASSIS CM 907SF SCREW TAPPTITE TT2 WAS 3X10 MRZN DECO EYE J K Y W KANG S D PARK KIM 2 7 1 8 1 1 1 1 1 1 1 2 1 PART NAME MODEL RE...

Page 14: ...4856812001 TIE CABLE NYLON66 DA100 SP01A 7172401252 SCREW TAPPTITE TT2 TRS 4X12 MFZN BK 3CR SP01B 7172401252 SCREW TAPPTITE TT2 TRS 4X12 MFZN BK 3CR V901 4859640860 CRT A51AEZ90X27 P38 ZZ200 PTFMSJD678 MASK FRONT AS DTB 21D7MT M191 4854950201 BUTTON CH ABS GY M191A 7178301051 SCREW TAPPTITE TT2 WAS 3X10 MFZN 3CR M201 4852078611 MASK FRONT HIPS GY M201A 4857818703 CLOTH BLACK FELT 300X15XT1 0 M481 ...

Page 15: ...1STRW6753 IC POWER STR W6753 0000A 4857024600 HEAT SINK AL EX B K 0000B 7174300851 SCREW TAPPTITE TT2 RND 3X8 MFZN 3CR I802 1LTV817C IC PHOTO COUPLER LTV 817C I804 1LE33CZ IC REGULATOR LE33CZ IF01 1441VF6 IC PREAMP 441VF6 JPA01 4859200401 SOCKET RGB YRS21 R1 JPA02 4859109950 JACK PIN BOARD PH JB 9710A L401 58H0000020 COIL H LINEARITY L 76 76 5UH LF801 5PLF24A3 FILTER LINE LF 24A3 M682 4856812001 T...

Page 16: ...310300 EYE LET BSR T0 2 R1 6 E003 4856310300 EYE LET BSR T0 2 R1 6 E004 4856310300 EYE LET BSR T0 2 R1 6 E005 4856310300 EYE LET BSR T0 2 R1 6 E006 4856310300 EYE LET BSR T0 2 R1 6 E007 4856310300 EYE LET BSR T0 2 R1 6 E008 4856310300 EYE LET BSR T0 2 R1 6 E009 4856310300 EYE LET BSR T0 2 R1 6 E010 4856310300 EYE LET BSR T0 2 R1 6 E011 4856310300 EYE LET BSR T0 2 R1 6 E012 4856310300 EYE LET BSR T...

Page 17: ... B 560PF K TAPPING C406 CEXF2C229V C ELECTRO 160V RSS 2 2MF 8X11 5 TP C412 CMXM2A104J C MYLAR 100V 0 1MF J TP C414 CCXB2H102K C CERA 500V B 1000PF K TAPPING C415 CXSL2H470J C CERA 500V SL 47PF J TAPPING C505 CEXF1H109V C ELECTRO 50V RSS 1MF 5X11 TP C507 CEXF1H109V C ELECTRO 50V RSS 1MF 5X11 TP C508 CEXF1H479V C ELECTRO 50V RSS 4 7MF 5X11 TP C509 CMXM2A104J C MYLAR 100V 0 1MF J TP C511 CMXM2A332J C...

Page 18: ... CEXF1C470V C ELECTRO 16V RSS 47MF 5X11 TP CA04 CEXD1H229F C ELECTRO 50V RND 2 2MF 5X11 TP F801 5FWPS4022L FUSE WIDE TL 250V 4A CASE I803 1K1A431B IC REGULATOR SHUNT KIA431B 2 495V 0 5 TO 92 L402 58C0000116 COIL BEAD HC 3550R L602 58CX430599 COIL CHOKE AZ 9004Y 940K TP L802 58CX430599 COIL CHOKE AZ 9004Y 940K TP Q104 TKTC3198Y TR KTC3198Y Q401 TKTC3207 TR KTC3207 TP Q403 TKTC3198Y TR KTC3198Y Q501...

Page 19: ...Z C CERA SEMI 50V F 0 1MF Z C501 CBZF1H104Z C CERA SEMI 50V F 0 1MF Z C502 CBZF1H104Z C CERA SEMI 50V F 0 1MF Z C503 CBZR1C222M C CERA 16V Y5R 2200PF M AXIAL C504 CBZR1C472M C CERA 16V Y5R 4700PF M AXIAL C506 CBZF1H104Z C CERA SEMI 50V F 0 1MF Z C510 CCZF1H103Z C CERA 50V F 0 01MF Z C514 CCZB1H331K C CERA 50V B 330PF K AXIAL C520 CCZF1H473Z C CERA 50V F 0 047MF Z C522 CCZF1H223Z C CERA 50V F 0 022...

Page 20: ...4148 DIODE 1N4148 TAPPING D502 D1N4148 DIODE 1N4148 TAPPING D505 DUZ7R5BM DIODE ZENER UZ 7 5BM D506 DUZ7R5BM DIODE ZENER UZ 7 5BM D507 DUZ7R5BM DIODE ZENER UZ 7 5BM D508 D1N4148 DIODE 1N4148 TAPPING D509 D1N4148 DIODE 1N4148 TAPPING D510 D1N4148 DIODE 1N4148 TAPPING D511 D1N4148 DIODE 1N4148 TAPPING D701 DUZ5R6BM DIODE ZENER UZ 5 6BM D801 DLT2A05G DIODE LT2A05G TP D802 DLT2A05G DIODE LT2A05G TP D8...

Page 21: ... TIN COATING J018 85801060GY WIRE COPPER 1 0 6 TIN COATING J019 85801060GY WIRE COPPER 1 0 6 TIN COATING J020 85801060GY WIRE COPPER 1 0 6 TIN COATING J021 85801060GY WIRE COPPER 1 0 6 TIN COATING J022 85801060GY WIRE COPPER 1 0 6 TIN COATING J023 RD AZ101J R CARBON FILM 1 6 100 OHM J J024 85801060GY WIRE COPPER 1 0 6 TIN COATING J025 85801060GY WIRE COPPER 1 0 6 TIN COATING J026 85801060GY WIRE C...

Page 22: ...63 85801060GY WIRE COPPER 1 0 6 TIN COATING J064 85801060GY WIRE COPPER 1 0 6 TIN COATING J065 85801060GY WIRE COPPER 1 0 6 TIN COATING J066 85801060GY WIRE COPPER 1 0 6 TIN COATING J067 85801060GY WIRE COPPER 1 0 6 TIN COATING J068 85801060GY WIRE COPPER 1 0 6 TIN COATING J069 85801060GY WIRE COPPER 1 0 6 TIN COATING J070 85801060GY WIRE COPPER 1 0 6 TIN COATING J071 85801060GY WIRE COPPER 1 0 6 ...

Page 23: ... FILM 1 6 4 7K OHM J R108 RD AZ473J R CARBON FILM 1 6 47K OHM J R302 RD AZ102J R CARBON FILM 1 6 1K OHM J R303 RN AZ1501F R METAL FILM 1 6 1 5K OHM F R305 RD AZ471J R CARBON FILM 1 6 470 OHM J R306 RD AZ152J R CARBON FILM 1 6 1 5K OHM J R307 RD 2Z129J R CARBON FILM 1 2 1 2 OHM J R312 RD 2Z331J R CARBON FILM 1 2 330 OHM J R401 RD AZ102J R CARBON FILM 1 6 1K OHM J R402 RD AZ102J R CARBON FILM 1 6 1K...

Page 24: ...M J R538 RD AZ331J R CARBON FILM 1 6 330 OHM J R539 RD 4Z339J R CARBON FILM 1 4 3 3 OHM J R540 RD AZ103J R CARBON FILM 1 6 10K OHM J R560 RD 4Z102J R CARBON FILM 1 4 1K OHM J R601 RD AZ512J R CARBON FILM 1 6 5 1K OHM J R604 RD AZ471J R CARBON FILM 1 6 470 OHM J R606 RD AZ122J R CARBON FILM 1 6 1 2K OHM J R607 RD AZ912J R CARBON FILM 1 6 9 1K OHM J R608 RD 4Z331J R CARBON FILM 1 4 330 OHM J R609 RD...

Page 25: ...20 OHM J R818 RD AZ103J R CARBON FILM 1 6 10K OHM J R819 RD AZ103J R CARBON FILM 1 6 10K OHM J R820 RD AZ473J R CARBON FILM 1 6 47K OHM J R821 RD 4Z100J R CARBON FILM 1 4 10 OHM J R836 RD AZ103J R CARBON FILM 1 6 10K OHM J R843 RD AZ561J R CARBON FILM 1 6 560 OHM J R844 RD AZ222J R CARBON FILM 1 6 2 2K OHM J R845 RD AZ751J R CARBON FILM 1 6 750 OHM J R846 RD AZ473J R CARBON FILM 1 6 47K OHM J R901...

Page 26: ...HM J RV09 RD AZ750J R CARBON FILM 1 6 75 OHM J RV10 RD AZ101J R CARBON FILM 1 6 100 OHM J RV11 RD AZ101J R CARBON FILM 1 6 100 OHM J RV12 RD AZ750J R CARBON FILM 1 6 75 OHM J RV13 RD AZ103J R CARBON FILM 1 6 10K OHM J RV14 RD AZ682J R CARBON FILM 1 6 6 8K OHM J RV15 RD AZ101J R CARBON FILM 1 6 100 OHM J RV16 RD AZ750J R CARBON FILM 1 6 75 OHM J ELECTRICAL PARTS LIST LOC PART CODE PART NAME DESCRIP...

Page 27: ...ier and AGC circuit The nominal frequency of the demodulator is tuned to the required frequency 5 5 6 0 6 5 MHz by means of a calibration circuit which uses the clock frequency of the microcontroller as a reference Selection of the required frequency is done by the controlling software Video switches The video switch has one input for an external CVBS or Y C signal The selected CVBS signal can be ...

Page 28: ...when signals with a high chroma to burst ratio are received The ACL circuit is designed such that it only reduces the chroma signal and not the burst signal This has the advantage that the colour sensitivity is not affected by this function SOFTWARE CONTROL The CPU communicates with the peripheral functions using Special function Registers SFRS which are addressed as RAM locations The registers fo...

Page 29: ... automatic adjustment of the Vg2d voltage during the production of the TV receiver During switch off of the TV receiver a fixed beam current is generated by the black current control circuit This current ensures that the picture tube capacitance is discharged During the switch off period the vertical deflection is placed in an overscan position so that the discharge is not visible on the screen 2 ...

Page 30: ...ia I2C bus The video processor pin 28 has multiple functions and provides in this applicationbus Deemphasis time constant Audio monitor output External AM input Deemphasis time constant The time constant is given by the capacitor C511 needer to obtain the 54 s time time constant for standarad PAL signal Audio monitor output the nominal output signal is 500 mVrms for all standards The signal is als...

Page 31: ...sinking and sourcing is active which leads to steep slopes The levels are 0 and Vddp the supply voltage 3 3Volts High impedance This mode can be used for input only operation of the port Special port for LED Pin 10 and 11 have the same functionality as the general I O pins but in addition their current source and sink capacity is 8 mA instead of 4 mA These pins are used for driving LED s via a ser...

Page 32: ...nal feed back information The voltage across R307 is proportional to the output current Flyback voltage The flyback voltage is determined by an additional supply voltage Vfb The principle of operation with two supply voltages class G makes it possible to fix the supply voltage Vp optimum for the scan voltage and the second supply voltage Vfb optimum for the flyback voltage Using this method very h...

Page 33: ...able delay time Picture improvement features with peaking with switchable centre frequency depeaking variable positive negative overshoot ratio and coring and black stretching These features are available for CVBS and Y C signals The black stretch feature is also available for external YPB PR signals Integrated chroma band pass filter with switchable centre frequency Only one reference 12 MHz crys...

Page 34: ...16 of VBI Real time capture and decoding for WST Teletext in Hardware to enable optimized m processor throughput Automatic detection of FASTEXT transmission Real time packet 26 engine in Hardware for processing accented G2 and G3 characters Signal quality detector for video and WST VPS data types Comprehensive teletext language coverage Full Field and Vertical Blanking Interval VBI data capture of...

Page 35: ... to peak value 1 0 V ViCHROMA p p external chroma input voltage burst amplitude 0 3 V peak to peak value ViRGB p p RGB inputs peak to peak value 0 7 V ViY p p Iuminance input signal peak to peak value 1 0 V ViPB p p PB input signal peak to peak value 0 7 V ViPR p p PR input signal peak to peak value Output signals Vo IFVO p p demodulated CVBS output peak to peak value 2 0 V Vo CVBSO p p selected C...

Page 36: ...10 TV signal processor Teletext decoder with embedded Controller TDA9345 PS N3 TDA9346 PS N3 BLOCK DIAGRAM IC DESCRIPTION APPENDIX ...

Page 37: ...ty for direct drive of LEDs VSSA 12 digital ground of TV processor SECPLL 13 SECAM PLL decoupling VP2 14 2 nd supply voltage TV processor 8V DECDIG 15 supply voltage decoupling of digital circuit of TV processor PH2LF 16 phase 2 filter PH1LF 17 phase 1 filter GND3 18 ground 3 for TV processor DECBG 19 bandgap decoupling AVL 20 Automatic Volume Levelling VDRB 21 vertical drive B output VDRA 22 vert...

Page 38: ...N 48 2 nd B input PB input BCLIN 49 beam current limiter input BLKIN 50 black current input V guard input RO 51 Red output GO 52 Green output BO 53 Blue output VDDA 54 analog supply of Teletext decoder and digital supply of TV processor 3 3 V VPE 55 OTP Programming Voltage VDDC 56 digital supply to core 3 3 V OSCGND 57 oscillator ground supply XTALIN 58 crystal oscillator input XTALOUT 59 crystal ...

Page 39: ...13 IC DESCRIPTION APPENDIX TV signal processor Teletext decoder with embedded Controller TDA9345 PS N3 TDA9346 PS N3 ...

Page 40: ... IC marking and version Chassis IC marking OSD languages TDA 9346PS N3 English Russian Arabic Melau Persian French CP 195L TDA9341PS N3 Group 1 English Arabic Persian Russian French Group 2 English Indonesia Melayu Thai Vietnam ...

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Page 45: ...19 IC DESCRIPTION APPENDIX LA78041 ...

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Page 51: ...C16 feature a 16 byte page wire buffer The device operates via the I2C bus Serial interface has a special write protection feature and is available in 8 pin DIP 8 pin SOIC or 8 pin TSSOP Serial Clock SCL The SCL input is used to strobe all data in and out of the memory Serial Data SDA The SDA pin is bi directional and is used to transfer data in or out of the memory Pin No Name Description 1 2 3 E...

Page 52: ...26 IC DESCRIPTION APPENDIX 6 STR W6753 ...

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Page 71: ...DAEWOO ELECTRONICS CORP PRINTED DATE May 2006 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA ...

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