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38

R801 HRFT750JCA

R CHIP

1/10 75 OHM J 2012

R811 HRFT750JCA

R CHIP

1/10 75 OHM J 2012

R821 HRFT750JCA

R CHIP

1/10 75 OHM J 2012

R9

HRFT102JCA

R CHIP

1/10 1K OHM J 2012

R92

HRFT302JCA

R CHIP

1/10 3K OHM J 2012

RP1

HFFH4H300E

COIL CHIP BEAD

HB-4H3216-300JT

RP10 HFFH4M121E COIL CHIP BEAD

HB-4M3216-121JT

RP12 HFFH4M121E COIL CHIP BEAD

HB-4M3216-121JT

RP13 HFFH4M121E COIL CHIP BEAD

HB-4M3216-121JT

RP2

HFFH4H300E

COIL CHIP BEAD

HB-4H3216-300JT

RP3

HFFH4H300E

COIL CHIP BEAD

HB-4H3216-300JT

RP4

HFFH4H300E

COIL CHIP BEAD

HB-4H3216-300JT

RP5

HFFH4H300E

COIL CHIP BEAD

HB-4H3216-300JT

RP7

HFFH4M121E COIL CHIP BEAD

HB-4M3216-121JT

RP8

HFFH4M121E COIL CHIP BEAD

HB-4M3216-121JT

RP9

HFFH4M121E COIL CHIP BEAD

HB-4M3216-121JT

RW2

RS01Z330J-

R M-OXIDE FILM

1W 33 OHM J (TAPPING)

S001 5S50101Z01

SW TACT

KPT-1115VM 1C-1P

S002 5S50101Z01

SW TACT

KPT-1115VM 1C-1P

S003 5S50101Z01

SW TACT

KPT-1115VM 1C-1P

S004 5S50101Z01

SW TACT

KPT-1115VM 1C-1P

S005 5S50101Z01

SW TACT

KPT-1115VM 1C-1P

S006 5S50101Z01

SW TACT

KPT-1115VM 1C-1P

SC1

HCTEJ220MC C CHIP TANTAL

35V 22MF M 7343

SC10 HCTED221MC C CHIP TANTAL

10V 220MF M 7343

SC11 HCTED221MC C CHIP TANTAL

10V 220MF M 7343

SC12 HCTED221MC C CHIP TANTAL

10V 220MF M 7343

SC13 HCTED221MC C CHIP TANTAL

10V 220MF M 7343

SC18 HCTEJ220MC C CHIP TANTAL

35V 22MF M 7343

SC2

HCTEJ220MC C CHIP TANTAL

35V 22MF M 7343

SC20 HCTBF100MB C CHIP TANTAL

16V 10MF M 3528 TS

SC21 HCFF105ZEA

C CHIP CERA

16V Y5V 1MF Z 3216

SC3

HCTBF479MB C CHIP TANTAL

16V 4.7MF M 3528

SC4

HCFK104ZCA C CHIP CERA

50V Y5V 0.1MF Z 2012

SC5

HCFK104ZCA C CHIP CERA

50V Y5V 0.1MF Z 2012

SC6

HCFK103ZCA C CHIP CERA

50V Y5V 0.01MF Z 2012

SC7

HCFK103ZCA C CHIP CERA

50V Y5V 0.01MF Z 2012

SC8

HCFF105ZEA

C CHIP CERA

16V Y5V 1MF Z 3216

SD1

DKDS181RTK DIODE CHIP

KDS181(RTK)

LOC

PART-CODE

PART-NAME

PART-DESC

SD2

DSK14-----

DIODE SCHOTTKY

SK14

SD3

DSK14-----

DIODE SCHOTTKY

SK14

SL1

HLC220M00E

L CHIP COIL

22UH M (BA220)

SL2

HLC220M00E

L CHIP COIL

22UH M (BA220)

SQ1

TFDS6930A-

FET CHIP

FDS6930A

SQ2

TFDS6930A-

FET CHIP

FDS6930A

SQ3

1K1A78L05F

IC REGULATOR CHIP

KIA78L05F(RTF)

SQ6

TNDS9435A-

FET CHIP

NDS9435A

SQ7

T2N3904SRT

TR CHIP

2N3904S(RTK)

SQ8

1K1A78L05F

IC REGULATOR CHIP

KIA78L05F(RTF)

SR1

HRFT104JCA

R CHIP

1/10 100K OHM J 2012

SR10 HRFT220JCA

R CHIP

1/10 22 OHM J 2012

SR14 HRFT104JCA

R CHIP

1/10 100K OHM J 2012

SR15 HRFT104JCA

R CHIP

1/10 100K OHM J 2012

SR16 HRFT113JCA

R CHIP

1/10 11K OHM J 2012

SR2

HRFT103JCA

R CHIP

1/10 10K OHM J 2012

SR3

HRFT103JCA

R CHIP

1/10 10K OHM J 2012

SR4

HRFT104JCA

R CHIP

1/10 100K OHM J 2012

SR5

HRM1407JPD R CHIP METAL PLATE

1W 0.04 OHM J 8340

SR6

HRM1207JPD R CHIP METAL PLATE

1W 0.02 OHM J 8340

SU1

1SB3052P--

IC

SB3052P(SSOP-28)

U015 1M62393P--

IC DAC

M62393P

U017 1TDA8752AH

IC ADC

TDA8752AH/8

U019 1TC74ACT14

IC

TC74ACT14FN

U1

1MX88281FC

IC LCD CONTROLLER

MX88281FC

U10

1TC74ACT57

IC

TC74ACT573FT(EL)

U11

1TC74ACT57

IC

TC74ACT573FT(EL)

U12

1TC74ACT57

IC

TC74ACT573FT(EL)

U16

1AT24C21--

IC EEPROM

AT24C21

U2

1ZRC250N80

IC

ZRC250N802

U3

1KM416S102

IC SDRAM

KM416S1020CT-G8

U4

1KM416S102

IC SDRAM

KM416S1020CT-G8

U5

1KM416S102

IC SDRAM

KM416S1020CT-G8

U6

1AT24C1610

IC

AT24C16-10PC

U7

1DW0SD05--

IC OSD

DWOSD05

U8

TNDS9958--

FET CHIP

NDS9958

U9

1TC74ACT57

IC

TC74ACT573FT(EL)

Y1

5XJ14R318F

CRYSTAL QUARTZ

HC-49/S 14.31818MHZ 50PPM

Y2

5XJ11R059E

CRYSTAL

HC-49/S 11.0592MHZ 30PPM

LOC

PART-CODE

PART-NAME

PART-DESC

ELECTRICAL PARTS LIST

Содержание L500B

Страница 1: ...ServiceManual TFT LCD MONITOR Model L500B DAEWOO ELECTRONICS CO LTD OVERSEAS SERVICE DEPT...

Страница 2: ...G PRECAUTIONS 4 GENERAL INFORMATION 8 PIN CONNECTOR 9 OPERATION ADJUSTMENT 10 ALIGNMENT PROCEDURE 14 TROUBLE SHOOTING HINTS 15 BLOCK DIAGRAM 22 PCB LAYOUT 23 SCHEMATIC DIAGRAM 25 EXPLODED VIEW MECHANI...

Страница 3: ...sharp solder points Be certain to remove all foreign materials u Implosion Protection TFT LCD in this monitor employs integral implosion protection system but care should be taken to avoid damage and...

Страница 4: ...G Statements indicate a personal injury hazard immediately accessible as one reads the marking u Symbols in the manual This symbol indicates where applicable cautionary or other information is to be f...

Страница 5: ...pacitors may result in a explosion hazard 2 Do not any spray chemicals on or near this instrument or any or its assemblies 3 Unless specified otherwise in this service manual clean electrical contacts...

Страница 6: ...ally shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of a replacement ES device touch the prote...

Страница 7: ...lder with an anti static suction type solder removal device or with desolder ing braid before removing the IC u Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend...

Страница 8: ...Observing diode polarity wrap each lead out of the new diode around the corresponding lead on the circuit board 4 Securely crimp each connection and solder it 5 Inspect the solder joints of the two o...

Страница 9: ...And so this TFT LCD monitor has a maximum horizontal resolution of 1024 dots and a maximum vertical resolution of 768 lines for superior clarity of display By accepting analog signal inputs which lev...

Страница 10: ...w Allow 20 minutes warm up time for the display before checking or adjusting only electrical specifica tion or function w Reform the leadwire after any repair work Pin Signal 1 Red 2 Green 3 Blue 4 G...

Страница 11: ...lected function w Move cursor to the left window on the OSD window w Decrease the value of any selected function w Launch OSD On Screen Display MENU window w Move cursor to the high window on the OSD...

Страница 12: ...11 OPERATION ADJUSTMENT u Key Process w When you choose the icon on the OSD window you can exit the OSD screen u Hot Key R G B Start...

Страница 13: ...Is the noise displayed on the screen Is the noise displayed on the screen Is the noise displayed on the screen yet End Adjust the FIT SCREEN Perform the Adjust the until the screen is cleared AUTO TR...

Страница 14: ...EN CONTROL Adjust the green color BLUE CONTROL Adjust the blue color H CENTER V CENTER Adjust the position of the display horizontally left or right and vertically up or down FIT SCREEN Make character...

Страница 15: ...5Hz available only non interlace mode u Adjustment 1 Smart scaling set to 50 2 Contrast set to 100 3 Brightness set to 50 4 Switching to factory alignment mode Press power key with down menu key t at...

Страница 16: ...G HINTS 1 Abnormal mode detect YES Abnormal mode detect Trouble video input circuit Check input H Sync of TDA8752 NO YES Trouble in the TDA8752 Check waveforms of 84 pin of TDA8752 correct YES Trouble...

Страница 17: ...video or No raster Power LED ON OFF Trouble in adapter Check output voltage of adapter YES Is the 5VS line normal NO Trouble in SQ8 and its ambient circuit NO YES YES Is the pulse of pin9 of the IC1...

Страница 18: ...the Q10 or MX88281 If it s trouble in the MX88282 change the main B D Check the output of the Q10 or 3 pin of CN1 2 5V 2 5V Check the 12V of the main power CN1 1 pin 12V check YES Check the DC AC out...

Страница 19: ...missing Check the output signal of the MX88281 and 74act573 Is OSD color normal NO YES Replace the main B D Are the R G B digital 8 bit output of the U17 TDA8752 YES Check video signal cable or video...

Страница 20: ...Check reset signal 9 pin of micom and its ambient circuit Check output voltage 5V 3 3V 12V NO Trouble in the Q9 and its ambient circuit NO YES Trouble each trouble item Check on off signal of micom YE...

Страница 21: ...ING HINTS 6 Abnormal video Abnormal video Check the output of MX88281 Is the OSD normal NO YES YES Check the control and data signal of SDRAM Is LCLK output the L1 waveform normal Check connection of...

Страница 22: ...O YES U8 2 pin output 12V check YES YES LVCC 3 3V check No raster NO YES Is OSD normal Change the contrast control value to maximum NO YES Are the contrast controls maximum NO YES YES Are the output s...

Страница 23: ...plifier TDA8752 3 RGB signal 15PIN DSUB CONNECTOR PRE AMP Controller Buffer 2 H V sync ADC PLL Sampling clock KM416S1020CT X 3 16M SDRAM X 3 Scaling Controller Red Micom 78 E58 I2C bus 12V adapter AC...

Страница 24: ...25 SCHEMATIC DIAGRAM u MAIN88281A...

Страница 25: ...26 SCHEMATIC DIAGRAM u TOP CIRCUIT...

Страница 26: ...27 SCHEMATIC DIAGRAM u BUFFER...

Страница 27: ...28 SCHEMATIC DIAGRAM u POWER DC DC...

Страница 28: ...29 SCHEMATIC DIAGRAM u MEMORY...

Страница 29: ...30 SCHEMATIC DIAGRAM u MICOM...

Страница 30: ...31 SCHEMATIC DIAGRAM u RGB SYNC...

Страница 31: ...32 SCHEMATIC DIAGRAM u TDA8752A...

Страница 32: ...33 EXPLODED VIEW MECHANICAL PARTS LIST...

Страница 33: ...omponents use only manufacturer s specified parts Abbreviation of Description RESISTOR Description Example CAPACITOR Description Example Allowance F 1 J 5 K 10 M 20 G 2 Fig Index Part No Description R...

Страница 34: ...5V 0 1MF Z 2012 C082 HCFK103ZCA C CHIP CERA 50V Y5V 0 01MF Z 2012 C083 HCFK103ZCA C CHIP CERA 50V Y5V 0 01MF Z 2012 C084 HCFK104ZCA C CHIP CERA 50V Y5V 0 1MF Z 2012 C085 HCFK104ZCA C CHIP CERA 50V Y5V...

Страница 35: ...ERA 50V Y5V 0 1MF Z 2012 C25 HCFK104ZCA C CHIP CERA 50V Y5V 0 1MF Z 2012 C27 HCFK104ZCA C CHIP CERA 50V Y5V 0 1MF Z 2012 LOC PART CODE PART NAME PART DESC C273 HCQK102JCA C CHIP CERA 50V CH 1000PF J 2...

Страница 36: ...RTK Q16 DKDS226RTK DIODE CHIP KDS226 RTK Q17 DKDS226RTK DIODE CHIP KDS226 RTK LOC PART CODE PART NAME PART DESC Q2 TKTC3875SY TR CHIP KTC3875SY RTK Q3 TKTC3875SY TR CHIP KTC3875SY RTK Q4 1K1A7805P1 I...

Страница 37: ...1MF Z 2012 SC6 HCFK103ZCA C CHIP CERA 50V Y5V 0 01MF Z 2012 SC7 HCFK103ZCA C CHIP CERA 50V Y5V 0 01MF Z 2012 SC8 HCFF105ZEA C CHIP CERA 16V Y5V 1MF Z 3216 SD1 DKDS181RTK DIODE CHIP KDS181 RTK LOC PAR...

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