Related Manuals for Daewoo Lucoms CML-523BM
Summary of Contents for Daewoo Lucoms CML-523BM
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Page 1: Service Manual
Service Manual LCD COLOR MONITOR Model : CML-523BM DAEWOO LUCOMS CO., LTD. http://www.lucoms.com MAY. 2004... -
Page 2: Table Of Contents
CONTENTS SAFETY PRECAUTIONS GENERAL SAFETY INFORMATION SERVICING PRECAUTIONS TECHNICAL INFORMATION GENERAL INFORMATION PIN CONNECTOR CAUTIONS FOR ADJUSTMENT AND REPAIR OPERATION & ADJUSTMENT ALIGNMENT PROCEDURE TROUBLESHOOTING HINTS BLOCK DIAGRAM SCHEMATIC DIAGRAM PCB PATTERN INFORMATION OF PART DESCRIPTION ELECTRICAL PARTS LIST... -
Page 3: Safety Precautions
SAFETY PRECAUTIONS CAUTION: No modifications of any circuits should be attempted. Service work should be performed only after you are thoroughly familiar with all of the following safety checks and servicing guidelines. Safety Check Care should be taken while servicing the inverter that generates the high voltage to lighten CCFL of the LCD panel. -
Page 4: General Safety Information
GENERAL SAFETY INFORMATION Terms in the manual CAUTION Statements identify conditions or practices that could result in damage to the equipment or other property. WARNING Statements identify conditions or practices that could result in personal injury or loss of life. Terms as marked on equipment CAUTION Statements indicate a personal injury hazard not immediately accessible as one reads the... -
Page 5: Servicing Precautions
SERVICING PRECAUTIONS CAUTION: Before servicing instruments covered by this service manual, its supplements, and addendum, please read and follow the SAFETY PRECAUTIONS of this manual. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 1 of this manual, always follow the safety precautions. Remember: Safety First. - Page 6 SERVICING PRECAUTIONS Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components are commonly called Electrostatically Sensitive (ES) Devices. The typical examples of ES devices are integrated circuits, some field-effect transistors, and semiconductor “chip”...
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Page 7: Small-Signal" Discrete Transistor Removal/Replacement
SERVICING PRECAUTIONS FIGURE 1. USE SOLDERING IRON TO PRY LEADS IC Removal/Replacement Some utilized chassis circuit boards have slotted (oblong) holes through which the IC leads are inserted and then bent flat against the circuit foil. When holes are slotted, the following technique should be used to remove and replace the IC. - Page 8 SERVICING PRECAUTIONS Diode Removal/Replacement 1. Remove defective diode by clipping its leads as close as possible to diode body. 2. Bend the two remaining leads perpendicularly to the circuit board. 3. Observing diode polarity, wrap each lead out of the new diode around the corresponding lead on the circuit board.
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Page 9: Technical Information
TECHNICAL INFORMATION Panel Size 15-inch (38cm) diagonal Pixel Pitch 0.297 x 0.297 mm Viewing Angle 70°(Right/Left) 70°(up), 60°(down) Contrast Ratio 350:1 contrast ratio (typ) Brightness 250cd/m brightness (typ) Color Filter RGB vertical stripe Synchronization Horizontal 30-62 KHz Vertical 50-75Hz Video Bandwidth 80MHz Max Resolution 1024 x 768 @75Hz... -
Page 10: General Information
GENERAL INFORMATION This TFT LCD monitor automatically scans all horizontal frequencies from 30KHz to 62KHz. This TFT LCD monitor supports IBM PC, PC/XT, PC/AT, personal System/2 (PS/2), Apple Macintosh, and compatible users crisp text and vivid color graphics display when using the following graphics adapters : (VGA, Super VGA, VESA, XGA, SXGA and Apple Macintosh Video Card). -
Page 11: Operation & Adjustment
OPERATION AND ADJUSTMENT << L523BM >> Control Panel POWER Indicator POWER Shows both normal operation and Switches the monitor on and power management status with off. power indicator light. AUTO EXIT MENU BRIGHTNESS POWER LIGHT Moves cursor to the right or low Moves cursor to the left or high window in the OSD window and window in the OSD window and... -
Page 12: Hot Key
OPERATION AND ADJUSTMENT Key Process U T IL I TY 1024X768 U TI L I TY UT I L ITY S H A R P N E SS S H A R P N E SS OSD OFF HOT KEY AUTO EXIT AU TO TRAC KIN G... -
Page 13: Adjustment Procedure
OPERATION AND ADJUSTMENT Adjustment Procedure Is the H.Size Adjust the CLOCK proper? control. Perform the AUTO Is the POSITION noise displayed on the screen? Perform the AUTO TRACKING Is the noise displayed on the screen yet? Adjust the CLOCK FINE until the screen is cleared. -
Page 14: Osd Functions
OPERATION AND ADJUSTMENT OSD Functions << OSD FUNCTIONS WITH USING PC >> ICON CONTROL FUNCTIONS VOLUME Adjust audio volume, mute sound. Adjust the width (horizontal size) of the screen image. CLOCK Sharpen the focus by aligning the illuminated pixels and adjust until the screen image looks focused, crisp and sharp. - Page 15 OPERATION AND ADJUSTMENT ICON CONTROL FUNCTIONS Choose automatically the proper horizontal position and vertical position & size AUTO POSITION of the screen image. Select language for OSD (6 languages). LANGUAGE Adjust the contrast of image, the difference between light and dark areas on the CONTRAST screen.
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Page 16: Self Diagnosis
OPERATION AND ADJUSTMENT Self Diagnosis If there is no image, the Self Diagnosis screen will be displayed. Self Diagnosis function checks if the status of the monitor screen is No Signal, Out of range or None support. “No Signal” screen is displayed when the D-Sub signal connector is not connected or the status of the monitor is on DPMS mode. -
Page 17: Alignment Procedure
ALIGNMENT PROCEDURE Standard Check point 1. Power source : 100 - 240Vac, 50/60Hz. 2. Aging : Take at least 20 minutes warm-up time. 3. Signal • Video input : Analog 0.7Vpp 75Ω terminal positive polarity • Synchronizing : acceptable negative or positive at TTL level •... -
Page 18: Troubleshooting Hints
TROUBLESHOOTING HINTS 1. Abnormal mode detect 1-1. Abnormal mode detect for PC Source Abnormal mode detect Is a input Trouble in the H-sync H-sync of Scaler(pin 126, input circuit. U6) correct? Trouble in Scaler(U6). - Page 19 TROUBLESHOOTING HINTS 2. Trouble in Power on Trouble in Power on Is the Refer to No video Power LED toggled or No raster. between on and off? Check if the power switch Is the power is on position and cord well Connect the power connected? cord correctly.
- Page 20 TROUBLESHOOTING HINTS 3. No Raster No Raster Check the Trouble in pin 15 output of Q1 or -com. pin 15 of U4. high Is 12V Check the output plugged in pin5 of D811 12V line of CN2(power (power board). board)? Is the output of Replace the inverter.
- Page 21 TROUBLESHOOTING HINTS 4. One color is missing One color is missing Check the output Is the OSD color signal of Scaler. normal? Is the input Check the video signal signal normal? cable or R,G,B con-ass’y. Are the R,G,B Digital values Check the ambient (every eight bits) correct circuit of Scaler.
- Page 22 TROUBLESHOOTING HINTS 5. No Video No Video Has display image Next page. only white? Check if the CON3 wafer is Connection trouble. well connected at the LCD panel. Is pin 1 Check U2, its ambient of U2 3.3V? circuit and pin 14 of U8. Check the output of scalier (pin LAV 0P~3P, 0M~3M) and soldering of CON3.
- Page 23 TROUBLESHOOTING HINTS 5-1. No Video Black Is OSD normal? 3. No raster Set the contrast Is the contrast up to Max. at its maximum? Is the output Is the input of of Scaler correct? Scaler correct? Replace the main board Check If (or replace Scaler).
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Page 24: Power Problem
TROUBLESHOOTING HINTS 6. Power Problem Power problem Is the power Check if the power cord well cord is correctly connected? connected. Check 5V, 3.3V, 12V of CN4. Check the main board. - Page 25 TROUBLESHOOTING HINTS 7. Sound Problem No Sound Audio-in OK? Check Audio-in (pin 10, 14 at U7) jack(J1). Is VCC(Pin15,16) Check VCC 12V line. of Audio IC(U7) 12V? Is Audio-out Is Mute ON? Check speaker. Check Auido IC(U7). Change Mute OFF.
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Page 26: Block Diagram
BLOCK DIAGRAM... -
Page 27: Schematic Diagram
SCHEMATIC DIAGRAM(L523BM) - Page 28 SCHEMATIC DIAGRAM...
- Page 29 SCHEMATIC DIAGRAM...
- Page 30 SCHEMATIC DIAGRAM...
- Page 31 SCHEMATIC DIAGRAM...
- Page 32 SCHEMATIC DIAGRAM...
- Page 33 SCHEMATIC DIAGRAM...
- Page 34 SCHEMATIC DIAGRAM...
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Page 35: Pcb Pattern
PCB PATTERN... - Page 36 PCB PATTERN...
- Page 37 PCB PATTERN...
- Page 38 PCB PATTERN...
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Page 39: Information Of Part Description
INFORMATION OF PART DESCRIPTION Important Safety Notice Components identified with the International Symbol have special characteristics important for safety. When replacing any components, use only manufacturer’s specified parts. Abbreviation of Description RESISTOR Description Tolerance ± 1% ± 5% ± 10% ±... -
Page 40: Electrical Parts List
These should be replaced only with the types specified in the parts list. PART-CODE PART-NAME PART-DESC Z1010 PCFMCAG204 COVER FRONT AS CML-523BM-4L CA001 99707K0002 CONN AS 12507HS-20+12507HS-20+1571#30=80 9979615051 LCD PANEL LM150X06 LVDS LIPS DDML1501—... - Page 41 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DESC HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 HCEEF101MD C CHIP ELECTRO MV 16V 100MF M 6.3DX5.7H HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 HCEEF101MD C CHIP ELECTRO MV 16V 100MF M 6.3DX5.7H...
- Page 42 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DESC HCEKF100MC C CHIP ELECTRO MV 16V 10MF D4.0XH5.2 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608 HCFK104ZBA C CHIP CERA 50V Y5V 0.1MF Z 1608...
- Page 43 ELECTRICAL PARTS LIST PART-CODE PART-NAME PART-DESC HFFHH1M601 COIL CHIP BEAD HH-1M3216-601JT HFFHH1M601 COIL CHIP BEAD HH-1M3216-601JT HFFHH1M601 COIL CHIP BEAD HH-1M3216-601JT HFFHH1M601 COIL CHIP BEAD HH-1M3216-601JT HFFHH1M601 COIL CHIP BEAD HH-1M3216-601JT 9979800612 PCB MAIN CML-700C-3S T=1.6*225*110 TKTC3875SY TR CHIP KTC3875SY(RTK) HRFS102JBA R CHIP 1/16 1K OHM J 1608...
- Page 44 RD-AZ472J- R CARBON FILM 1/6 4.7K OHM J R212 RD-AZ101J- R CARBON FILM 1/6 100 OHM J Z1020 PCBCCPG207 COVER REAR AS CML-523BM-4L YR010 99721173A1 COVER REAR AS CML-520B C/REAR AS YR040 7173301212 SCREW TAPPTITE TT2 BIN 3X12 MFZN BK...
- Page 45 9975841000 LABEL BARCODE ART PAPER 71*36 YP051 9919310000 LABEL BARCODE E ART PAPER COM IMPRINTABLE YP060 9978634606 MANUAL INSTRUCTION CML-523BM-L (DTE FRANCE EN/FR) YP061 W3415M731- CORD POWER C5 H03VV-F 3X0.75 1.8M BK YP063 9970800072 CABLE SIGNAL AS 15P+2C/DDC+GY-641A+OD5.5=1.5M YP064 9978212900 BAG POLY PE FILM T0.05*250*350...