SERVICE MANUAL LC-XB41 - TechEdu.com

Electrical Adjustments
. 50% White adjustment [Video]
1. Enter the service mode.
2. Receive the 16-step grey scale composite video signal
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.
white level
(a)
white level
⁄0 White Balance adjustment [Video]
1. Enter the service mode.
2. Receive the 16-step grey scale composite video signal
with Video[Video] mode.
3. Select group no. “100” item no. “7” (Red) or “8” (Blue),
and change Data values respectively to make a proper
white balance.
Confirm that the same white balance is obtained in video
and computer input.
Note On White Uniformity Adjustment
If you find the color shading on the screen, please adjust
the white uniformity by using the proper computer
and “Color Shading Correction” software supplied separately.
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