LG DKE573XB Скачать руководство пользователя | Manualshive

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3-28

6. KARAOKE Block Diagram(KARAOKE MODEL ONLY)

Microphone1

Microphone

Signal

PREAMP

(BA3308)

AMP

(KA741)

AUDIO

ADC

(CS5331)

MPEG

(MT1389C)

AUDIO

DAC

(

CS4344)

1 The unit turns to KARAOKE MODE with ou-screen lyrics display and melody sound when it play backs

VCD or DVD KARAOKE DISC.

2. IF a microphone is connected at this time, MICON recoguizes the connection and prepares the compo-

sition of external voice and internal melody.

3. The week signal of the microphone is converted to the digital signal after voice output that has passed

through PREAMP(BA3308) and AMP(KA741) passes through(CS5331) that is Audio ADC(Analog to
Digital convertor).

4. This digital signal enters NT1389C that is MPEG IC

5. This mixed signal is output to AV JACK after passing through AUDIO DAC(CS4344).

(Block Digram)

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Содержание DKE573XB

Страница 1: ...E9453CEM DE9553CEM MODELS DKE573XB DKE574XB DKE575XB DE9353CEM DE9453CEM DE9553CEM SERVICE MANUAL P NO 3829RHP037Z Printed in Korea JANUARY 2005 CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL DKE573XB DE9353CEM DKE574XB DE9453CEM DKE575XB DE9553CEM ...

Страница 2: ...CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 REPLACEMENT PARTS LIST ...

Страница 3: ...ARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 General Servicing Precautions Insulation Checking Prodedure Electrostatically Sensitive Devices SPECIFICATIONS 1 5 1 2 ...

Страница 4: ...AYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC OPERA TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC TURE TUBE OR HIGH VOLTAGE SUPPLY AND UNDER CERTAIN CIR CUMSTANCES MAY PRODUCE RADIATION IN EXCESS OF DESIR ABLE LEVELS 2 ONLY FACTORY SPECIFIED C R T ANODE CONNECTORS MUST BE USED DEGAUSSING SHIELDS ALSO SERVE AS X RAY SHIELD...

Страница 5: ... pan els Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be u...

Страница 6: ...0 V p p 75 Ω negative sync RCA jack x 1 Pb Pr 0 7 V p p 75 Ω RCA jack x 2 AUDIO OUT 2 0 Vrms 1 KHz 0 dB 600 Ω RCA jack L R x 1 SCART TO TV DIGITAL OUT COAXIAL 0 5 V p p 75 Ω RCA jack x 1 SYSTEM Laser Semiconductor laser wavelength 650 nm Signal system PAL NTSC Frequency response DVD PCM 96 kHz 8 Hz to 44 kHz DVD PCM 48 kHz 8 Hz to 22 kHz CD 8 Hz to 20 kHz Signal to noise ratio More than 100 dB ANA...

Страница 7: ...2 1 SECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 2 1 Cabinet and Main Frame Section 2 2 2 Deck Mechanism Section DP 9 2 3 3 Packing Accessory Section 2 4 ...

Страница 8: ...1 Cabinet and Main Frame Section 463 A41 276 A00 283 463 463 250 463 463 A48 5 1CH Model ONLY A47 A46 463 465 A44 260 261 280 A43 279 A42 A49 452 452 261 467 320 300 KARAOKE MODEL ONLY KARAOKE MODEL ONLY A 5 4 3 2 1 B C D ...

Страница 9: ...2 Deck Mechanism Section DP 9 2 3 A00 439 014 018 001 002 003 A01 A02 020 013 017 012 435 015 019 026 A03 036 021 430 438 035 025 024 010 431 435 012A 035A 012A 015A 015B 432 030 016 440 012 ...

Страница 10: ...ection BATTERY 808 PACKING SHEET 804 PACKING OPTIONAL PARTS 803 806 820 OWNER S MANUAL RF CABLE 810 CABLE SET ASS Y 801 REMOCON 900 BOX CARTON 802 PACKING 803 811 812 PLUG ASS Y 1WAY YELLOW PLUG ASS Y 1WAY BLACK PLUG ASS Y 2WAY ...

Страница 11: ... MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF 3 20 12 MT1389 VIDEO OUTPUT WAVEFORM 3 20 13 MT1389 AUDIO OUTPUT TO AUDIO DAC 3 21 14 AUDIO OUTPUT FROM AUDIO DAC 3 22 BLOCK DIAGRAMS 3 23 1 Overall Block Diagram 3 23 2 Power SMPS Block Diagram 3 24 3 SERVO Block Diagram 3 25 4 MPEG MEMORY Block Diagram 3 26 5 VIDEO AUDIO Block Diagram 3 27 6 KARAOKE Block Diagram KARAOKE MODEL ONLY 3 28 CIRCUIT DIAG...

Страница 12: ...ES YES YES YES YES Is the D121 normal YES YES Is there about 2 5V at the IC103 Pin1 Is the D123 normal Is the D125 Normal Power Line of Main PCB DVD is short No 12V Check or Replace the D125 Is the Vcc 14V sup plied to Q123 Collector Check or Replace the Q123 Is the Vcc 12V sup plied to Q126 Base NO NO Check the PWR CTL H signal from µ com YES YES YES No REG 5 0V Check or Replace the D123 Is the V...

Страница 13: ...RISC Show LOGO Tray Closed Tray Close to Closed position SLED at Inner Side SLED Moves to Inner Position 1 Judge whether have disc and disc type 2 Jump to related disc reading procedure Recieve OPEN CLOSE Key 1 Execute Pressed Key IR Key 2 System operation Routine Loop 1 Stop Playback Open Tray 2 Display tray open message LOGO Receive CLOSE Key ...

Страница 14: ... YES Is 3 3V and 1 8V DC outputs normal on main PCBA YES Connect to PC RS232 Cable and update the FLASH memory code YES Update FLASH successfully YES A Replace power PCBA or AC transformer NO Repair or Replace Power PCBA NO Check the regulators or related diodes NO 1 Check 27MHz system clock 2 Check system reset circuit 3 Check FLASH R W enable signal PRD RWR 4 Check RS232 SIGNALS 5 Check FLASH Me...

Страница 15: ...RAM MT1389C and the SDRAM is damaged NO MT1389C VIDEO outputs properly Check the related circuit of MT1389C NO Have TV signal output Check AV cable connection to TV set Normal TROUT TRIN signals Check the filtering and amp circuit of TV signal NO Check the load OPEN CLOSE switch NO Normal TRCLOSE TROPEN signal Check the Tray control IO pins on MT1389C IP9005 NO Normal LOAD LOADsignal Check the cab...

Страница 16: ...Check the connection line of STBY signal NO Is FMSO DC Level higher than 1 4V Check the related circuit of FMSO NO SL and SL output properly YES Check the amp circuit on motor driver Check FOSO connection on MT1389C and motor dirver NO NO Check the cable connection with MECHA Proper FOSO outputs to motor driver Proper F F outputs Check the amp circuit on motor dirver NO Check cable connect on with...

Страница 17: ...ansistor is OK Check the related circuit on laser power transistor NO Check cable connection between transistor ouput and pick up head YES YES YES Check the related circuit on MT1389C RFL signal Check DMSO related circuit on MT1389C NO NO Check the spindle control amp circuit of motor driver NO Laser off Proper RFL signal on MT1389C Check LDO1 LDO2 signal Proper DMSO signal on MT1389C SP SP output...

Страница 18: ...heck the FOSO connection on MT1389C and motor driver NO Check FOSO signal on MT1389C YES YES Check the TRSO connection on MT1389C and motor dirver NO Check the tracking control amp circuit on motor driver NO Normal TEO Signal on MT1389C NO Check the related circuit on MT1389C Properly TRSO signal on MT1389C T T output properly Check cable connection on pick up head Check RFO RFLVL signal waveform ...

Страница 19: ...T END NO NO YES YES YES YES Check connection between MT1389C Audio DAC NO Normal Audio DAC out YES Check the related circuit of Audio DAC NO Check Audio filter amplify mute circuit Communications between IR VFD Front pannel key MT1389C is normally NO Check communication lines on MT1389C Check the cable connection on Front pannel ...

Страница 20: ...C801 Pin 2 Is the Mic signal at the IC801 Pins3 7 normal Is the Digital signal output at the IC508 Pin1 Replace IC501 Replace the IC508 Check pattern Replace the VR801 Replace IC801 Replace the mic jack Start Insert the Mic jack Does the Mic signal input the IC501 Pin224 NO NO NO NO NO YES YES YES YES ...

Страница 21: ...S AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 27MHz CLOCK RESET FLASH R W SIGNAL 1 MT1389C main clock is at 27MHz X501 FIG 1 1 1 0V 27MHz 2 MT1389 reset is low active FIG 1 2 Reset Time 3 3VA PWR_CTL RESET ...

Страница 22: ...3 12 3 RS232 waveform during procedure Downloading FIG 1 3 TXD RXD 4 Flash R W enable signal during download Downloading FIG 1 4 PRD PWR ...

Страница 23: ...3 13 2 SDRAM CLOCK FIG 2 1 3 TRAY OPEN CLOSE SIGNAL FIG 3 1 DCLK 128MHz Vp p 2 2 Vmax 2 7V TRIN TROUT TRCLOSE TROPEN ...

Страница 24: ...OL RELATED SIGNAL NO DISC CONDITION FIG 4 1 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION FIG 5 1 FOSO 1 5V 1 4V 1 3V F 3 2V 2 7V 2 2V F 3 2V 2 7V 2 2V FMSO 1 9V 1 4V 1 1V STBY 3 3V SL 4 2V 2 8V 1 2V SL 4 2V 2 8V 1 5V ...

Страница 25: ...3 15 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION FIG 7 2 DVD 7 DISC TYPE JUDGEMENT WAVEFORM FIG 7 1 DCLK 128MHz Vp p 2 2 Vmax 2 7V F FE RFL MDI1 0V 180mV LD01 3 3V 2 3V LD02 3 3V 2 3V ...

Страница 26: ...3 16 FIG 7 2 DVD FIG 7 3 CD F F FE FE RFL RFL ...

Страница 27: ...3 17 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD FE FOSO F F F FE RFL ...

Страница 28: ...3 18 FIG 8 2 CD 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION FIG 9 1 FOSO F DMSO 1 4V 1 8V SP 3 6V 2 4V SP 3 6V 4 8V FE F ...

Страница 29: ...3 19 10 TRACKING CONTROL RELATED SIGNAL System checking FIG 10 1 DVD FIG 10 2 CD TE TRSO T T TE TRSO T T ...

Страница 30: ...3 20 11 MT1389C AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF FIG 12 1 13 MT1389C VIDEO OUTPUT WAVEFORM 1 100 FIG 13 1 TE TRSO T T ...

Страница 31: ...3 21 2 COMPOSITE VIDEO SIGNAL FIG 13 2 14 MT1389C AUDIO OUTPUT TO AUDIO DAC FIG 14 1 ASDATA3 ...

Страница 32: ...3 22 15 AUDIO OUTPUT FROM AUDIO DAC FIG 15 1 ...

Страница 33: ...2_TXD IECDAOUT COAXIAL SPDIF CDLD DVDLD SVREF21 5V 8V HOMESW INSW OUTSW ROMDATA 0 7 DMUTE IIC VFD DAC_SCK IC503 4M 16BIT 4Bank SDRAM VD33D MA 00 11 DMCLK CSJ BA0 BA1 DQM WEJ CASJ RASJ IIC VFD DAC_TXD IC501 MTK MT1389 12V 5V YC_MIX SER3 DAC_ML0 SER 0 2 DAC_ML1 OPEN CLOSE SLEGP SPINDLE FOCUS TRACK SVREF DAC_RST CD_DVD VR_CD VR_DVD CD_DVD_CT XSFGN XSFGP CN503 RS232 Download RS232_RXD IC301 CS4360 6DA...

Страница 34: ...MPS Block Diagram 8V 3 2V FILTER π SWITCHING IC TRANS FEED B 3 4VA RECTIFIER 5 6V RECTIFIER 9 5V LPF RECTIFIER 14V LPF 12V PWR CTL 5V 5 6V M 5 6VA RECTIFIER 3 4V LPF AC100 240V RECTIFIER REG T W WITH 1389C WITH 1389D ...

Страница 35: ...DI 1 V20 PICKSEL LIMIT TRIN TROUT TRCLOSE STBY V1P4 MA 0 11 DQM0 DQM1 WE CAS RAS CS BA0 BA1 SDCLK SDCKE DQ 0 15 PRD PWR PCE AD 0 7 A 0 20 SCL SDA RXD TXD IC201 IP9005 Motor Driver M D PICK UP X501 IC501 MT1389C DVDPLAYER ONE CHIP 27MHz X TAL ALPC IC503 4M x 16bit SDRAM FLASH ROM EEP ROM RS232C MTK 3 SERVO Block Diagram ...

Страница 36: ...mp VIDEO Interface AUDIO Interface LED DRIVE IC IC503 SDRAM 64M DCLK WE CAS RAS CS DCKE MA 0 10 DQM0 DQM1 DQ 0 15 X501 27MHz AMDAT ACLK ABCK ALRCK KARAOKE BOARD SCL SDA Y2 Y Y3 Color Y4 Y Y5 Cb Y6 Cr ASPECT 16 9 ACLK ALRCK ABCK MUTE VSCK VSDA ASDTA 0 3 ASTB SCL SDA ASPDIF PWR PCE PRD A 0 20 AD 0 7 DIN DOUT IC505 RESET IC RESET ...

Страница 37: ...uffer OP Amp LPF Buffer R G B Y Pb Pr Y C DAC RESET ACLK SCL SDA DAC RESET ACLK SCL SDA ADATA1 ADATA2 ADATA3 ADATA3 IC601 IC301 IC602 IC302 IC303 IC304 CVBS COMPONENT R G B Y Pb Pr SUPER VIDEO Y C A V JACK MPEG MPEG MPEG 5 1CH BOARD FRONT R REAR R FRONT L REAR L CENTER WOOFER AUDIO L AUDIO R VIDEO 6dB Amp IC604 ...

Страница 38: ...hone is connected at this time MICON recoguizes the connection and prepares the compo sition of external voice and internal melody 3 The week signal of the microphone is converted to the digital signal after voice output that has passed through PREAMP BA3308 and AMP KA741 passes through CS5331 that is Audio ADC Analog to Digital convertor 4 This digital signal enters NT1389C that is MPEG IC 5 This...

Страница 39: ...ATION OF THE LATEST SAFETY AND PERFORMANCE IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED NOTE 1 Shaded parts are critical for safety Replace only with specified part number 2 Voltages are DC measured with a digital voltmeter during Play mode A B C D E F G H I J K L M N O P Q R S T 14VA No Power D125 is Defective 12V No Power Q123 is Defective 5 0V No P...

Страница 40: ...3 31 3 32 2 AV JACK CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...

Страница 41: ...3 33 3 34 A B C D E F G H I J K L M N O P Q R S T 3 SYSTEM CIRCUIT DIAGRAM ...

Страница 42: ...3 35 3 36 4 DRIVER CIRCUIT DIAGRAM CD DVD LD will not on A B C D E F G H I J K L M N O P Q R S T ...

Страница 43: ...3 37 3 38 5 TIMER CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...

Страница 44: ...6 5 1CH OPTIONAL PART KARAOKE KARAOKE MODEL ONLY CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T 3 39 3 40 ...

Страница 45: ...3 41 3 42 7 SCART CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T ...

Страница 46: ... 93 151 1 49 1 62 152 1 8 1 75 153 0 0 154 0 0 155 3 3 3 3 156 1 72 1 72 157 0 92 2 29 158 0 0 159 0 0 160 0 0 161 0 0 162 1 56 1 4 163 0 0 164 2 36 1 54 165 2 32 1 61 166 1 49 1 61 167 3 3 3 3 168 3 25 3 24 169 3 3 3 27 170 0 0 171 0 0 172 0 0 173 1 8 1 8 174 3 33 3 3 175 0 0 176 2 73 2 73 177 0 0 178 3 32 3 32 179 2 75 0 180 0 0 181 0 0 182 3 3 3 3 183 0 0 184 0 0 185 0 0 186 0 0 187 0 0 188 0 0...

Страница 47: ...3 45 3 46 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE ...

Страница 48: ...D Solder Side 3 TOOL ONLY 4 TOOL ONLY Solder Side 5 TOOL ONLY Solder Side 3 TOOL ONLY TOP VIEW BOTTOM VIEW Solder Side Solder Side 4 TOOL ONLY TOP VIEW BOTTOM VIEW Solder Side Solder Side 5 TOOL ONLY TOP VIEW BOTTOM VIEW Solder Side Solder Side ...

Страница 49: ...49 3 50 4 SMPS P C BOARD LOCATION GUIDE 5 5 1CH VGA P C BOARD OPTIONAL PART LOCATION GUIDE Solder Side 6 KARAOKE P C BOARD 3 TOOL ONLY LOCATION GUIDE 4 TOOL ONLY LOCATION GUIDE 5 TOOL ONLY LOCATION GUIDE ...

Страница 50: ......

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