Electrical Instruction - Philips BDL4681XU/00 Service Manual

24 BDL4681XU LCD
White balance
The picture color temperature shall be able to be chosen out of 5 modes 10000K, 9300K, 6500K, 5800K, and
USER. 10000K, 9300K, 6500K, 5800K are factory setting (fixed color) and "USER" is adjustable mode. (The
default color of "USER" mode is the same color as 6500K mode.)
A/D converter calibration of the scalar shall be performed with 0V/0.730Vp-p black/white level signal to obtain
adequate dynamic range for video signal output level deviation. White balance adjustment and inspection shall be
carried out using 0.700Vp-p level signal.
Measurement condition – Measurement point
Measurement equipment – Color Analyzer
Color Temperature Table:
Mode
10000K
9300K
6500K
5800K
Electrical Instructions
: Center of screen
Measurement distances : 50cm
Measurement Angle
: CA210 or Equivalent
Signal Generator : VG828 or Equivalent
Video Signal : White pattern
x
0.278
0.283
0.313
0.326
: 90°
y
0.291
0.298
0.329
0.342
Specification
±0.03
±0.03
±0.03
±0.03