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LCD TV SERVICE MANUAL

Model list 

LC1508NT
LC1521NT
LC2018NT

DAYTEK

Digital Flat Display Division

Summary of Contents for LC1508NT

Page 1: ...LCD TV SERVICE MANUAL Model list LC1508NT LC1521NT LC2018NT DAYTEK Digital Flat Display Division ...

Page 2: ...r that hardware is not lodged between the chassis and other metal parts in the receiver 2 Replace all protective devices such as non metallic control knobs insulating fish papers cabinet backs adjustment and compartment covers of shields isolation resistor capacitor networks mechanical insulators etc 3 To be sure that not shock hazard exists a check for the presence of leakage current should be ma...

Page 3: ...ption 36W Power Supply AC 100 240V 50 60Hz Adapter DC12V 3A TV item Port list KLC 1508US 1 RF cable 2 Video and Audio 3 S Video 4 Headphone audio output 5 DC 12V input item Port list KLC 1521US 1 RF cable 2 Y Pb Cb Pr Cr 3 Audio2 Y Pb Cb Pr Cr Audio input 4 VGA 5 Audio3 PC Audio input 6 Video and Audio1 7 S Video 8 Headphone audio output 9 DC 12V input PDF 文件以 PDF 制作工厂 试用版创建 http www fineprint com...

Page 4: ... set 5 DDC card DYNACOLOR INC D8330 1 slice 6 TV Video Signal Generator FLUKE PM54200 1 set 4 Factory mode adjustment 4 1 Enter factory mode adjustment Using the remote control press Menu button once first then press PRE CH or named RECALL button five times and you can see manufacture menu on the LCD panel 4 2 factory menu operation method Press the channel button to selection the sub menu of fact...

Page 5: ...o adjust white calibration automatically BLOCK DIAGRAM N401 MAIN IC TDA15001H T102 M9352 T101 M3953 N100 Tuner AGC SIF VIF CVBS S Video Audio L R KEY B1 B0 IR PWRON DDC HWI2C BKLON VCC 5Ua VCC 3 3VUSB VCC 1 8a VCC 1 8b Audio N201 TDA1517 Audio 2 L R 3 3V Supply 2 5V Supply VGA Audio IN port Y Pb Pr N303 PI5V330 UOC_R G B YUVHs YUVVs M_Rst M_CLK M_SDA M_CS N501 MST518 Y_G Pb_B Pr_R Port VG A DDC HW...

Page 6: ...PDF 文件以 PDF 制作工厂 试用版创建 http www fineprint com ...

Page 7: ...IC BLOCK DIAGRAM 1 N401 TDA15001H1 2 N501 MST518 PDF 文件以 PDF 制作工厂 试用版创建 http www fineprint com ...

Page 8: ...805 supply 2 5V Test the PIN 2 D803 supply 8 3V V401 and V402 supply 1 8V All these are for main IC N401 N501 3 After turning on the power if blank screen appears no back light lamp just press POWER button several times if blank screen still there Check if the voltage of every power supply is normal 4 Check if the crystal oscillator X501 14 318180MHz X401 24 576MHz oscillate or not and oscillate f...

Page 9: ...PDF 文件以 PDF 制作工厂 试用版创建 http www fineprint com KLC 1508US ...

Page 10: ...PDF 文件以 PDF 制作工厂 试用版创建 http www fineprint com KLC 1508US ...

Page 11: ...PDF 文件以 PDF 制作工厂 试用版创建 http www fineprint com KLC 1521US ...

Page 12: ...PDF 文件以 PDF 制作工厂 试用版创建 http www fineprint com KLC 1521US ...

Page 13: ... 6 C847 10u 16V D801 FM5820 R824 NC 1K V862 NC BC847 C825 180p L804 FB C819 470u 16V R804 1 5K C853 10u 16V V802 NC BC847 C820 0 22 16V R820 10K C802 0 1u 25V D802 FM5820 L805 FB L801 FB N860 NC 9435A 1 2 3 4 8 7 6 5 D D D G S S S S C852 0 1u 25V C814 3 3n 50V R811 3 3K R821A 1K V805 BC847 L810 FB C804 0 22 25V C821 0 22 25V C813 10n R812 22K V803 BC847 C810 0 22 16V N803 9435A 1 2 3 4 8 7 6 5 D D...

Page 14: ...6 2 1 2 C204 0 1 50V C371 2 2 R100 10K R207 220K D200 1N4148 C222 470u 16V R374 10K R375 10K R210 NC 10K C310 0 1 C203 470u 16V C106 10u 16V C312 100p C372 100p R104 1K R201 2 2K C104 0 01 R106 1 2K C221 470u 16V XS301 AUDIO IN 1 3 2 C210 4 7u 25V C109 100u 16V C377 100 R370 1K L103 47uH V319 BAV99 R203 2 2K C309 100p R102 100 R108 470 C311 1u 10V C103 0 01 R103 100 XS304 VGA_AUDIO_IN 5 4 2 3 7 8 ...

Page 15: ...BAV99 C206 0 1 R356 1 2K R380 100 XS505 CON2 1 2 V312 BAV99 R305 47K L306 BEAD R304 1K R346 100 L304 BEAD C533 047 R329 100 R357 1 2K L305 BEAD R382 100 C352 10u C301 100 C323 10 V317 BAV99 N302 24LC21 1 2 3 4 5 6 7 8 NC NC NC GND SDA SCL VCLK VCC R354 100 N301 PI5V330A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IN S1A S2A DA S1B S2B DB GND DC S2C S1C DD S2D S1D EN VCC C537 1n V308 BAV99 C351 220P R35...

Page 16: ...1 8V GNDA NC VREFAD_POS VREFAD_NEG VDDA1 3 3V BO GO RO BLKIN BCLIN VP3 GND3 B PB 3 G Y 3 R PR 3 INSSW3 VOUT SWO1 UOUT INSW 2 YOUT YSYNC YIN G Y 2 CVBS Y X UIN VIN R PR 2 C X VDDcomb VSScomb HOUT FBISO CSY SVM SSIF REFOUT AUDIOIN5L AUDIOIN5R AUDOUTSL AUDOUTSR DECSDEM AMOUT QSSO AUDEEM GND2 PLLIF SIFAGC DVBAGC DVBO IFVO FMRO NC VCC8V NC VP2 SVO IFOUT CVBSI AUDIOIN4L AUDIOIN4R CVBS4 Y4 C4 AUDIOIN2L S...

Page 17: ...C_DAT DDC_CLK DDCROM_CLK DDCROM_DAT HWRESET XIN XOUT AVDD_MPLL GND HSYNC0 VSYNC0 HSYNC1 VSYNC1 GND R R GND G G AVDD B B GND CLK CLK AVDD REXT AVDD_PLL GND AVDD GND BIN1 BIN1M SOGIN1 GIN1 GIN1M RIN1 RIN1M NC NC BIN0M BIN0 GIN0M GIN0 SOGIN0 RIN0M RIN0 GND AVDD RMID REFP REFM GA 5 GA 4 GA 3 GA 2 GA 1 GA 0 VDDC GND GND VDDP BA 7 BA 6 BA 5 BA 4 BA 3 BA 2 BA 1 BA 0 VDDC GND VDDP VD7 VD6 VD5 VD4 VD3 VD2 ...

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