Acer AL2017 AL2017 LCD Monitor Service Guide - Page 14
Spectrometer, Minolta CS1000T, LCD Module, LCD Panel, Center of the Screen - backlight
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(4) Luminance, Chromaticity and CCT Measurement Measurement System Setup: The LCD module should be stabilized at given temperature for (20) minutes to avoid abrupt temperature change during measuring. In order to stabilize the luminance, the measurement should be executed after lighting Backlight for (20) minutes in a windless room. n For TCO03/TCO99 CCT test condition requirement, the brightness and contrast setting on OSD shall be adjusted to meet 125 nit. LCD Module LCD Panel Center of the Screen Spectrometer (Minolta CS1000T ) 500 mm Light Shield Room (Ambient Luminance < 2 lux) 13