Service Manual35Factory Mode IntroductionWith signal input, press “Power” button on right corner of front bezel to turn off themonitor. Press first and second buttons on OSD key (from up to down) together, andthen press “Power” button to turn on the monitor. After power on, the device is enterfactory modode ,press “[Ù]” buttons to call out factory menu (see the following Fig)Exit: Exit from Factory mode and back to NO OSD Status.Panel: The current-setting panel is highlighted.Auto Color: Automatically calibrate chip ADC parameters by using internal DAC.Burn In: Enable or disable the Burn-in mode by choosing ON or OFF.Reset Time: Reset the “Turn-on time” of the panel to 0H0M.Color Temp: The R, G, B of Blue Preset (9300K), Red Preset (5700K) and NormalPreset (6500K) are generatedfrom scaling chip’s back-end white-balance program.Time: Turn-on time of the panel.DEBUG: Debug tool of scale IC U105.Dell panel P/NPANEL Supplier P/N CODE PANELSAM LTM200KT03 F747N SAM5.4 Burn-in patternBurn-in pattern will self-generate automatically without VGA and HDMI cable pluggedin when the monitor set at Burn-in on mode and burn-in pattern will not be stopped untilplugging in the VGA /HDMIcable. Exit Burn-in mode method as followe: plugging inthe VGA/HDMI cable, press “Menu” button to call out OSD Main Menu, Press “PlusKey”to select“Other Settings submenu”then choose Factory reset.