Eiki LC-XB41, Service Manual

Page: 30 / 108

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Electrical Adjustments
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
nal with
Video[Video]
mode.
3. Connect an oscilloscope to test point “
tP35g
” (+)
and chassis ground (-).
4. Select group no. “
100
”, item no. “
6
” and change data
value to adjust amplitude “
a
” to be
1.6 ±0.1V
.
(a)
white level
white level
.
50% White adjustment [Video]
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
nal with
Video[Video]
mode.
3. Select group no. “
100
” item no. “
7
” (Red) or “
8
” (Blue),
and change Data values respectively to make a prop-
er white balance.
Confirm that the same white balance is obtained in video
and computer input.
⁄0
White Balance adjustment [Video]
Note On White Uniformity Adjustment
If you find the color shading on the screen, please ad-
just the white uniformity by using the proper computer
and “Color Shading Correction” software supplied sep-
arately.