RZ-26LZ55HW (CHASSIS:ML-041E) - LG TV Service Manual (repair manual). Page 11

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3.4.1  Black level(sub-bright adjustment)
■Apply Gray-Level Gray-Level (Model : 210, pattern : 59)
signal by using Pattern Generator(MSPG-925FS). 
■Check the luminance (32 LPL : 7.2 cd/m^2, 30 AUO :5.0
cd/m^2, 27 CMO : 5.2 cd/m^2, 26 LPL : 7.5 cd/m^2, 26
AUO : 7.5 cd/m^2, 23 LPL : 6.3 cd/m^2,  +-0.5cd/m^2)  by
using CA-110 equipment
■ If color-coordinates is not in Spec, adjust the luminance
spec by adjusting Sub-bright.
3.4.2  Low Gray Adjustment
■Apply Gray-Level Gray-Level (Model : 210, pattern : 59)
signal by using Pattern Generator(MSPG-925FS) 
■Check weather color-coordinates(x : 0.280 , y : 0.280,
±0.005)is operated by using CA-110 equipment
■ If color-coordinates is not in Spec, adjust color-
coordinates ( x : 0.280 , y : 0.280, ±0.005) by adjusting
Red Offset, Blue Offset
■ All adjustment takes color-coordinates with based on G,
changing R and B. If it is not adjusted, adjust with fixed
B, changing G and R.
3.4.3 White Balance Adjustment 
■Apply  95% White (Model : 210, pattern : 47, luminance
spec : 350cd/m^2 over )signal by using Patten
Generator(MSPG925FS)
■Check whether color-coordinates(x : 0.283, y : 0.298,
±0.005)is operated by using CA-110 equipment
■If color-coordinates is not in Spec, adjust color-
coordinates ( x : 0.283, y : 0.298, ±0.005) by adjusting
Red Gain, Blue Gain
■All adjustment takes color-coordinates with based on G,
changing R and B. If it is not adjusted, adjust with fixed B,
changing G and R.
4. EDID(The Extended Display Identification Data) SETTING
■Connect D-Sub to DVI-I Cable to DVI-I Jack.
■Input analog signal and check pc video in the screen.
■After appearing the pc video, write Analog EDID data.
■Connect DVI D Cable to DVI Jack.
■Input digital signal and check pc video in the screen.
■After appearing the pc video, write digital EDID data.
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