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37

DSUB1 9979200209

D-SUB 15P ANGLE

15P DDC BLUE W/IN SCREW

EF1

5PF1BH471M

FILTER LC

CFI-06-B-1H-471M

IC1

1DWM300---

IC MICOM

W78E58-24

IC1A

9979300500

SOCKET IC

WSDIF-40T

IC2

174HCT4538

IC

74HCT4538D

I

INV1

DBA11501--

LCD INVERTER

BAI1501

J001

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J002

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J003

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J004

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J005

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J006

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J007

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J008

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J009

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J010

85801052GY

WIRE COPPER

1/0.52 TIN COATING

J011

85801052GY

WIRE COPPER

1/0.52 TIN COATING

JACK1 9979100010

JACK DC

POWER JACK 6.5PIE 14.5*9

L1

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L10

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L11

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L12

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L13

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L15

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L16

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L2

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L28

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L4

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L5

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L6

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L7

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L8

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

L9

HFFTB2601B

COIL CHIP BEAD

TB321611Z260

LCD

DLM151X2C2

LCD

LM151X2-C2TH

LED1 DSD50GYW--

LED

SD50GYW(GREEN/AMBER)

OUT1 9979220080

CONN WAFER

DBBV-41PJ-1.0SM

OUTA 9970741001

CONN AS

DF-9-41S*2+1571#32=220

Q10

TKTC3875SY

TR CHIP

KTC3875SY(RTK)

Q12

DKDS226RTK DIODE CHIP

KDS226(RTK)

Q13

DKDS226RTK DIODE CHIP

KDS226(RTK)

Q14

DKDS226RTK DIODE CHIP

KDS226(RTK)

Q15

DKDS226RTK DIODE CHIP

KDS226(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

IC REGULATOR

KIA7805API

Q5

TKTC3875SY

TR CHIP

KTC3875SY(RTK)

Q6

TKTC3875SY

TR CHIP

KTC3875SY(RTK)

Q7

1KA7542---

IC VOTAGE DETECTOR

KA7542

Q8

DKDS226RTK DIODE CHIP

KDS226(RTK)

Q9

TKTC3875SY

TR CHIP

KTC3875SY(RTK)

R001 RD-AZ472J-

R CARBON FILM

1/6 4.7K OHM J

R002 RD-AZ472J-

R CARBON FILM

1/6 4.7K OHM J

R003 RD-AZ472J-

R CARBON FILM

1/6 4.7K OHM J

R1

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R10

HRFT102JCA

R CHIP

1/10 1K OHM J 2012

R11

HRFT101JCA

R CHIP

1/10 100 OHM J 2012

R12

HRFT104JCA

R CHIP

1/10 100K OHM J 2012

R13

HRFT474JCA

R CHIP

1/10 470K OHM J 2012

R14

HRFT103JCA

R CHIP

1/10 10K OHM J 2012

R15

RD-2Z101J-

R CARBON FILM

1/2 100 OHM J

R16

HRFT105JCA

R CHIP

1/10 1M OHM J 2012

R17

HRFT105JCA

R CHIP

1/10 1M OHM J 2012

R18

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R19

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R2

HRFT220JCA

R CHIP

1/10 22 OHM J 2012

R20

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R22

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R23

HRFT473JCA

R CHIP

1/10 47K OHM J 2012

R3

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R32

HRFT000JCA

R CHIP

1/10 0 OHM J 2012

R34

HRFT220JCA

R CHIP

1/10 22 OHM J 2012

R35

HRFT220JCA

R CHIP

1/10 22 OHM J 2012

R36

HRFT102JCA

R CHIP

1/10 1K OHM J 2012

R4

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R40

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R400 HRFT362JCA

R CHIP

1/10 3.6K OHM J 2012

R401 HRFT362JCA

R CHIP

1/10 3.6K OHM J 2012

R41

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R5

HRFT220JCA

R CHIP

1/10 22 OHM J 2012

R51

HRFT513JCA

R CHIP

1/10 51K OHM J 2012

R52

HRFT512JCA

R CHIP

1/10 5.1K OHM J 2012

R53

HRFT512JCA

R CHIP

1/10 5.1K OHM J 2012

R55

HRFT103JCA

R CHIP

1/10 10K OHM J 2012

R6

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

R7

HRFT101JCA

R CHIP

1/10 100 OHM J 2012

R8

HRFT472JCA

R CHIP

1/10 4.7K OHM J 2012

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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