Philips BDL4771V user manual HOW to Spot Mura, HOW to Avoid Mura

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User Manual BDL4771V

Mura has been around since the introduction of LCD technology and with screens getting bigger and in operation 24/7, many displays are running in low light conditions. This all adds to the possibility of Mura affecting displays.

6.7.1.HOW TO SPOT MURA

There are many symptoms of Mura and also multiple causes. Several of these are listed below:

Impurities or foreign particles in the crystal matrix

Uneven distribution of LCD matrix during manufacturing

Non-uniform luminance distribution of the backlight

Panel assembly induced stress

Flaws within the LCD cells

Thermal induced stress - high temperature operation over long periods of time

6.7.2.HOW TO AVOID MURA

Although we can not guarantee the complete eradication of Mura every time, in general the appearance of Mura can be minimized by these methods:

Lower the backlight brightness

Use a screen saver

Reduce the ambient temperature around the unit

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Contents BDL4771V Safety precautions and maintenance Safety and Troubleshooting InformationMaintenance OperationService CE Declaration of Conformity Regulatory InformationFederal Communications Commission FCC Notice U.S. Only FCC Declaration of ConformityELECTRIC, Magnetic and Electronmagnetic Fields EMF Polish Center for Testing and Certification NoticeInformation for UK only How to connect a plug中国电子信息产品污染控制表示要求 中国 RoHS 法规标示要求 产品中有毒有害物质或元素 的名称及含量 Varning North Europe Nordic Countries InformationVaroitus END-OF-LIFE DisposalTable of Contents Mura Unpacking Unpacking and InstallationMounting the Display Wall mounting holes Parts and Functions Power indicator Power buttonSmart Insert installation holes Video Source buttonAudio OUT R/L Audio in AUDIO1Speakers R/L DVI-D OUTON/OFF Input Change Remote Control General FunctionsBrightness button Auto Adjust buttonDisplay button UP buttonOperating Range of the Remote Control Connections to External Equipment Using the Cable Retainer Using the Switch CoverConnecting a PC Using VGA Input Using DVI Input Using a DVI-D Out to Hdmi in connection External Audio Connection Connecting External Speakers Additional BDL4771V display First BDL4771V display OSD Menu Navigating the OSD Menu Using the DISPLAY’S Control Buttons Contrast Picture Menu BrightnessSharpness Black levelHdmi Zoom mode Clock phaseScreen Menu Position ClockCustom zoom Screen resetAudio Menu Speaker Line-out VolumeInternal BalanceAudio Audio resetAuto adjust Configuration 1 Menu Switch on statePower save LanguageNetwork settings Return to the Contents Configuration reset OSD mode Configuration 2 Menu OSD turn offSleep timer PortraitNative Scan mode Advanced option Menu Input resolutionAuto 1024x768 1360x768 1366x768 Black level expansionRemote control selection Film modeIR control IR outReturn to the Contents Date and time Heat statusSchedule DDC/CI Monitor IDSmart power Hdmi with One WireOff Medium High Auto signal detection Settings cloningFirmware update Menu From USB VGA Resolution Input ModeSdtv Resolution Hdtv ResolutionPage Pixel Defect Policy Dot definition = What is a defective Dot?Total DOT Defects of ALL Types Bright DOT DefectsHOW to Spot Mura Cleaning Cleaning and TroubleshootingFront Panel Cleaning Instructions Cabinet Cleaning InstructionsUse the Zoom mode or Custom zoom TroubleshootingDisplay Technical SpecificationsInput Terminals Control TerminalsGeneral Output TerminalsEnvironmental Condition Internal SpeakerReturn to the Contents