Eiki LC-X71 Service Manual download pdf (Page 28)

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Electrical Adjustments

1. Receive the 100% whole-white composite video sig-

nal with Input 3 [Video] mode.

2. Enter the service mode.

3. Measure luminance on the screen with the luminance

meter. It is B for the reading of luminance meter.

4. Change the signal source to the 50% whole-white

signal with Input 3 [Video] mode.

5. Select group no. “210”, item no. “15” and change data

value to make the reading of luminance meter to be

B x 22±1%.

Note:

If the luminance meter is not equipped, you can take

another method instead as follows;

1. When the main board is replaced, the data value at

group no. “210”, item no. “15”of the previous main

board should be copied manually.

⁄2 AV Gamma-shift adjustment

1. Receive the 50% whole-white composite video signal

with Input 3 [Video] mode.

2. Enter the service mode, select group no. “210”, item

no. “16”(Blue) or “17” (Red), and change data values

respectively to make a proper white balance.

Confirm that the same white balance is obtained in

video and computer input.

⁄3 AV White Balance adjustment

If you find the color shading on the screen, please

adjust the white uniformity by using the proper comput-

er and “Color Shading Correction” software supplied

separately.

NOTE ON WHITE UNIFORMITY

ADJUSTMENT

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Eiki LC-X71 Service Manual Page 28