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2.12 Gamma Adjustment
[PC-gamma adjustment]
1. Receive the 16-step grey scale computer signal with Computer2 [RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "TPG1" (+) and chassis ground (–).
4. Select group no. "9", item no. "10" and change data value to adjust amplitude "a" to
be 2.2 ± 0.1V.
[AV-gamma adjustment]
1. Receive the 16-step grey scale video signal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "TPG1" (+) and chassis ground (–).
4. Select group no. "9", item no. "10" and change data value to adjust amplitude "a" to
be 2.4 ± 0.1V.
2.13 White Balance Adjustment
[PC white balance adjustment]
1. Receive the 16-step gray scale computer signal with Computer2 [RGB] mode.
2. Enter the service mode, select group no. "9" item no. "11" (Red) or "12" (Blue), and
change Data values respectively to make a proper white balance.
[AV white balance adjustment]
1. Receive the 16-step gray scale composite video signal with Video [Video] mode.
2. Enter the service mode, select group no. "9" item no. "11" (Red) or "12" (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.
white level
(a)
Fig. 3-10
3-17
white level
Part 3: Adjustment
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