Daewoo LuComs CML-710 Service Manual Download Page 1

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LCD COLOR MONITOR

Model : CML-710

http://www.lucoms.com

2004

Service Manual

DAEWOO LUCOMS CO., LTD.

Summary of Contents for LuComs CML-710

Page 1: ...LCD COLOR MONITOR Model CML 710 http www lucoms com 2004 Service Manual DAEWOO LUCOMS CO LTD...

Page 2: ...INFORMATION 8 GENERAL INFORMATION 9 PIN CONNECTOR 9 CAUTIONS FOR ADJUSTMENT AND REPAIR 9 OPERATION ADJUSTMENT 10 ALIGNMENT PROCEDURE 16 TROUBLESHOOTING HINTS 17 BLOCK DIAGRAM 24 SCHEMATIC DIAGRAM 25 P...

Page 3: ...oltage circuit area if a short circuit is found replace all parts which have been overheated as a result of the short circuit All the protective devices must be reinstalled per original design Solderi...

Page 4: ...nts indicate a personal injury hazard not immediately accessible as one reads the marking or a hazard which is properly included on the equipment itself WARNING Statements are clearly concerning indic...

Page 5: ...ume Aceton and 90 by volume isopropyl alchohol 90 99 strength 5 Do not apply AC power to this instrument and or any other of its electrical assemblies unless all the solid state device heat sinks are...

Page 6: ...h leads electrically shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of replacement ES devices...

Page 7: ...in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush lt is not necessary to reapply acrylic coating...

Page 8: ...he circuit board 3 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 j...

Page 9: ...80 x 1024 75Hz Optimal Resolution 1280 x 1024 75Hz Colors 8bit 16M Colors Display Area 337 9mm x 270 3mm PC Input Signal Sync H V separate TTL Video 15 pin mini D sub Analog RGB Plug and Play VESA DDC...

Page 10: ...matically scans all horizontal frequencies from 30KHz to 80KHz and all vertical frequencies from 56Hz to 77Hz 15 50KHz to 75KHz This TFT LCD monitor supports IBM PC PC XT PC AT personal System 2 PS 2...

Page 11: ...on Moves cursor to the left or high window in the OSD window and decreases value of any selected function While the OSD screen is off you can adjust the screen brightness according to each situation S...

Page 12: ...11 OPERATION AND ADJUSTMENT Key Process MENU EXIT EXIT EXIT OSD OSD SHARPNESS SHARPNESS UT L TY UT L TY UT L TY 1280X1024 80K 75 SELECT SELECT...

Page 13: ...e the best display performance fit for a current mode AUTO TRACKING AUTO The screen will be brightened progressively by 10 If you carry out general PC works such as document edition on the Movie mode...

Page 14: ...Perform the AUTO POSITION Is the H Size proper Is the noise displayed on the screen Perform the AUTO TRACKING Is the noise displayed on the screen yet Is the noise displayed on the screen yet Adjust t...

Page 15: ...zontally left or right and vertically up or down H CENTER V CENTER Choose different preset color temperatures or set your own customized color parameters Adjust the width horizontal size of the screen...

Page 16: ...en is displayed when the D Sub signal connector is not connected or the status of the monitor is on DPMS mode Out of Range screen is displayed when the applied frequency is under or over normal range...

Page 17: ...uency 17 Horizontal 30KHz 80KHz Vertical 56Hz 77Hz available only non interlace mode Adjustment 1 Sharpness set to 0 2 Contrast set to 100 3 Brightness set to 100 4 Switching to factory alignment mode...

Page 18: ...17 TROUBLESHOOTING HINTS L710 1 Abnormal mode detect Is a input H sync of Scaler pin126 U6 correct Abnormal mode detect No Yes Trouble in the H sync input circuit Trouble in Scaler U6 Yes...

Page 19: ...Check the power board VCC5V of CON2 Check on Scaler U6 Is the Power LED toggled between on and off Off No Yes On Is the power cord well connected Refer to No video or No raster Check if the power swit...

Page 20: ...in pin 5 of CN2 power board No No Yes Yes Is the output of inverter correct Check the output of 12V line power board Replace the inverter Replace a LCD panal low high Check the output of Q1 or pin 15...

Page 21: ...output signal of Scaler No Yes Is the input signal normal Check the video signal cable or R G B con ass y Trouble in the soldering of R G B data lines from output of Scaler to Scaler U6 Yes No Yes Are...

Page 22: ...hite No Yes Next page No Yes Connection trouble Check interface scalier pin LAV 0P 3P 0M 3M and solding of CON3 No Yes Is pin 5 6 7 8 of U2 5V Check U2 its ambient circuit and pin 14 of U8 Check if th...

Page 23: ...contrast at its maximum 3 No raster Set the contrast up to Max Yes Yes Check If the CON3 wafer is well connected at the LCD panel No Yes Is the output of Scaler correct No Yes Is the input of Scaler...

Page 24: ...23 TROUBLESHOOTING HINTS No Yes Yes Check 3 3V 5V 12V of CN2 Check the main board Is the power cord well connected Check if the power cord is correctly connected Power problem Yes 6 Power Problem...

Page 25: ...24 BLOCK DIAGRAM...

Page 26: ...25 SCHEMATIC DIAGRAM L710...

Page 27: ...26 SCHEMATIC DIAGRAM...

Page 28: ...SCHEMATIC DIAGRAM 27...

Page 29: ...SCHEMATIC DIAGRAM 28...

Page 30: ...SCHEMATIC DIAGRAM 29...

Page 31: ...30 PCB PATTERN...

Page 32: ...31 PCB PATTERN...

Page 33: ...32 PCB PATTERN...

Page 34: ...33 PCB PATTERN...

Page 35: ...0 5 F 1pF J 5 K 10 P 100 0 Z 80 Fig Part No Description Index R101 Resistors RD 4Z820J Carbon 82J R30 HRFS472JBA Chip 4 7K OHM J Tolerance F 1 J 5 K 10 M 20 G 2 Important Safety Notice Components iden...

Page 36: ...NYLON 66 DAMC 20 Z2010 PCMPM1J266 PCB MAIN MANUAL AS CML 710 CON1 9979220118 CONN WAFER YDW200 10 CON2 9979220087 CONN WAFER SMAW200 06 68163 0610 J3 9979200207 D SUB 15P ANGLE 15P DDC BLUE W OUT SCR...

Page 37: ...F Z 1608 C69 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 C7 HCBK103KBA C CHIP CERA 50V X7R 0 01MF K 1608 C70 HCFK104ZBA C CHIP CERA 50V Y5V 0 1MF Z 1608 C71 HCQK220JBA C CHIP CERA 50V CH 22PF J 1608 C...

Page 38: ...1608 R25 HRFS151JBA R CHIP 1 16 150 OHM J 1608 R26 HRFS472JBA R CHIP 1 16 4 7K OHM J 1608 R27 HRFS103JBA R CHIP 1 16 10K OHM J 1608 R28 HRFS473JBA R CHIP 1 16 47K OHM J 1608 R29 HRFS473JBA R CHIP 1 16...

Page 39: ...0 CEXF1C101C C ELECTRO 16V RUS 100MF 6 3X11 TP C22 CEXF1C101C C ELECTRO 16V RUS 100MF 6 3X11 TP C26 CEXF1C101C C ELECTRO 16V RUS 100MF 6 3X11 TP C27 CEXF1C101C C ELECTRO 16V RUS 100MF 6 3X11 TP C30 CE...

Page 40: ...11 L710 Z1030 PCSSSWJ266 STAND AS CML 710DMW LU YST10 99729251A0 STAND AS CML 710 STAND AS 00010 9972925100 STAND BASE L710 HB HIPS SPRAY 00010 22211102H5 RESIN HIPS CH HR 1360 GY 8105A G4646 00020 99...

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