联想液晶显示器LXBL17C维修手册.docx

1、联想液晶显示器LXBL17C维修手册LXB-L17CTHESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

2、Table of ContentRevision List.21. Monitor Specifications.32. LCD Monitor Description.43. Operating Instructions.53.1 General Instructions.53.2 Control Buttons.53.3 Adjusting the Picture.64. Input/Output Specification.104.1 Input Signal Connector.104.2 Factory Preset Display Modes.114.3 Panel Specifi

3、cation.124.3.1 Panel Feature.134.3.2 Display Characteristics.134.3.3 Optical Characteristics134.3.4 Parameter guideline for CCFL Inverter.135. Block Diagram.155.1 Monitor Exploded View.155.2 Software Flow Chart.165.3 Electrical Block Diagram185.3.1 Main Board.185.3.2 Inverter/Power Board.196. Schema

4、tic.206.1 Main Board.206.2 Power Board.267. PCB Layout.287.1 Main Board.287.2 Power Board.297.3 Key Board298. Maintainability.308.1 Equipments and Tools Requirement308.2 Trouble Shooting.318.2.1 Main Board.318.2.2 Power /Inverter/Board.348.2.3 Keypad Board.359. White-Balance, Luminance adjustment.37

5、10. EDID Content.3811. BOM LIST.39Revision ListRevisionDateChange DescriptionA00Sep-07-05Original RevisionB00Oct-13-05Update bom, schematic diagram,panel1. MONITOR SPECIFICATIONSLCD Panel Driving systemTFT Color LCDSize43.2cm(17.0)Pixel pitch0.264mm( H )x 0.264mm( V )Viewable angle150 (H) 130 (V) Re

6、sponse time (type)12 ms for CMO panelInputSync. TypeH/V TTLH-Frequency30kHz 80kHzV-Frequency50-75HzPower ConsumptionON Mode42WOFF Mode2WContrast Ratio500:1Dot Clock135MHzWhite Luminance300cd/m2Max. Resolution1280 x 1024Plug & PlayVESA DDC2BTMDisplay Color 16.2M Power Source100240VAC,4763HzMaximum Sc

7、reen SizeHorizontal : 337.92mmVertical: 270.336mmEnvironmentalConsiderationsOperating Temp: 0C to 45CStorage Temp: -20C to 60COperating Humidity: 10% to 85%2. LCD MONITOR DESCRIPTIONThe LCD MONITOR will contain a main board, an inverter/PWPC board and a keypad board which house the flat panel contro

8、l logic, brightness control logic and DDC.The power board will provide the AC to DC voltage to drive backlight and the main board chips each voltage.PWPC board（Include Inverter and Adapter）Flat Panel and CCFL backlightMain Board Video signal, DDCHOST ComputerKeyboardMonitor Block DiagramCCFL Drive.R

9、S232 ConnectorFor white balance adjustment in factory modeAC-IN100V-240V3. OPERATING INSTRUCTIONS3.1 GENERAL INSTRUCTIONSPress the power button to turn the monitor on or off. The other control buttons are located at the front of the monitor. By changing these settings, the picture can be adjusted to

10、 your personal preferences.- The power cord should be connected.- Connect the video cable from the monitor to the video card.- Press the power button to turn on the monitor, the power indicator will light up.3.2 CONTROL BUTTONPower button：Power Indicator will turn off when the monitor is in Power Sa

11、ving status, and return normal while the button is pressed once again.Left and Right Button: the function button of monitor，used to adjust function and value.Auto Adjust button / Exit:a. When OSD Menu is in activate status, this button will act as EXIT-KEY (Exit OSD menu)b. When OSD Menu is in OFF s

12、tatus, press this button to activate the Auto Adjustment function.The Auto Adjustment function is used to optimized the HPos, VPos, Clock and Focus.Power Indicator condition:Green Power On modeOrange Power Saving modeBlack Power Off modeA. Power Button/ Power Indicator: Press the button to switch ON

13、/OFF of monitors power,Green Power On modeOrange Power saving modeB. Decrease the value of selected item/Activate the Brightness Adjustment.C. Increase the value of selected item/Activate the Contrast Adjustment.D. When the OSD menu is in OFF status, press the button for one second to activate the A

14、uto Adjustment functionExit OSD menu when in volume OSD status.E. Active OSD menu or function adjust confirm .3.3 ADJUSTING THE PICTUREMain MenuSub MenuDescriptionBrightness adjustmentContrast adjustmentSave the adjusted value and return back to the previous menu Cancel the adjusted value and return

15、 back to the previous menuAdjust the horizontal position of the pictureAdjust the vertical position of the pictureSave the adjusted value and return back to the previous menuCancel the adjusted value and return back to the previous menuAdjust Picture Phase to reduce Horizontal-Line noiseAdjust Pictu

16、re Clock to reduce Vertical-Line noiseSave the adjusted value and return back to the previous menuCancel the adjusted value and return back to the previous menuSet OSD display language to ChineseSet OSD display language to EnglishOSD MENU will disappear after 5 seconds untouchedOSD MENU will disappe

17、ar after 10 seconds untouchedOSD MENU will disappear after 30 seconds untouchedOSD MENU will disappear after 60 seconds untouched Recall 7800 Color temperature from EEPROMRecall 6500 Color temperature from EEPROMEntering the user mode, adjust Red gain, Green gain and Blue gainAdjust the horizontal p

18、osition of the OSDAdjust the vertical position of the OSDSave the adjusted value and return back to the previous menuCancel the adjusted value and return back to the previous menuN/AEXIT OSDTo return the setting value to default value4. INPUT/OUTPUT SPECFICATION4.1 Input Signal connectorPIN NO.DESCR

19、IPTIONPI N NO.DESCRIPTION1.Red9.+5V2.Green10.Logic GND3.Blue11.GND4.Ground12.DDC-Serial Data5.Ground13.H-Sync6.R-Ground14.V-Sync7.G-Ground15.DDC-Serial Clock8.B-GroundVGA Connector layout4.2 FACTORY PRESET DISPLAY MODES：TIMINGFH(KHZ)FV(HZ)SYNCPOLARITYTOTAL(DOT/LINE)ACTIVE(DOT/LINE)SYNCWIDTH(DOT/LINE

20、)FRONTPORCH(DOT/LINE)BACKPORCH(DOT/LINE)PIXELFOREQ.(MHZ)NTSC31.46980064096164825.17559.94052548021033PAL31.25+88470072510727.62550Hz+62557021241640x480VGA-48031.46980064096164825.17559.9452548021033640x480VESA-480-72Hz37.861832640402412831.572.8095204803928640x480VESA-480-75Hz37.5840640641612031.575

21、5004803116720x400VGA-400-TEXT31.469900720108185428.32270.08744940021235800x600VESA-600-60Hz37.879105680012840884060.3176286004123800x600VESA-600-72Hz48.077104080012056645072.18866660063723800x600VESA-600-75Hz46.8751056800801616049.57562560031211024x768XGA48.36313441024136241606560.00480676863291024x

22、768VESA-768-70Hz56.47613281024136241447570.06980676863291024x768VESA-768-75Hz60.02313121024961617678.7575.02980076831281280x1024XGA63.981+168812801124824810860.020+1066102431381280x1024VESA-1024-70Hz74.882+169612801603222412769.853+1072102442421280x1024VESA-1024-75Hz79.976168812801441624813575.02510

23、66102431384.3 PANEL SPECIFICATION4.3.1 PANEL FEATURE- Wide viewing angle- High contrast ratio- Fast response time- High color saturation (EBU Like Specifications)- SXGA (1280 x 1024 pixels) resolution- DE (Data Enable) only mode- LVDS (Low Voltage Differential Signaling) interface- RoHS Compliance4.3.2 DISPLAYS CHARACTERISTICS4.3.3 OPTICAL CHARACTERISTICS Optical CharacteristicsThe relative measurement methods of optical characteristics are shown in 4.4.34.3.4 Parameter guideline for CCFL Invert