No. 51957
GM-P421U
GM-P420UG
48
Item
Test equipment
Test points
Ad justment
locations
Ad justment procedure
*
White balance adjustment should be carried out beforehand.
*
The PICTURE ADJ. in the MAIN MENU should be initialized.
Bright (NTSC)
adjustment
PC Video
signal
generator
NT SC
Video signal
WC07
1. Input the NTSC video signal gray s cale pattern to the VIDEO A
terminal.
2. Adjust the value in the
<
SERVICE MENU
>
WC07 s o that the
4% portion on the screen of the panel is s hown up as a slight
color tinting of the blac k while the 2% black portion do not
gleam with the illumination intensity which is brighter than that
of the preliminary electric discharge. (Care must be taken not to
make the blac k portions with signific ant black level.)
*
White balance adjustment should be carried out beforehand.
*
The PICTURE ADJ. in the MAIN MENU should be initialized.
Bright (480i)
adjustment
Video signal
(grayscale/480i)
generator
WE07
1. Input the 480i video signal gray scale pattern to the
COMPONENT terminal.
2. Adjust the value in the
<
SERVICE MENU
>
WE07 so that the
4% portion on the screen of the panel is s hown up as a slight
color tinting of the blac k while the 2% black portion do not
gleam with the illumination intensity which is brighter than that
of the preliminary electric discharge. (Care must be taken not to
make the blac k portions with signific ant black level.)
0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14
%
The 4% portion is shown up as a
slight color tinting of the blac k.
2%
0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14
%
The 4% portion is shown up as a
slight color tinting of the blac k.
2%