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Part 3: Adjustment
2.11 Signal Offset Adjustment [PC]
1. Receive the 16-step gray scale computer signal with Computer [Analog RGB] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "TP503G" (+) and chassis ground (-).
4. Select item no. "10" and adjust the amplitude "a" to be 2.4 ±0.1V by changing the
Data value.
2.12 Signal Offset Adjustment [AV]
1. Receive the 16-step gray scale composite video signal with Video [Video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "TP503G" (+) and chassis ground (-).
4. Select item no. "10" and adjust the amplitude "a" to be 2.4 ±0.1V by changing the
Data value.
2.13 White Balance Adjustment
[PC white balance adjustment]
1. Receive the 16-step gray scale computer signal with Computer [Analog RGB] mode.
2. Enter the service mode, select item no. "11" (Red) or "12" (Blue), and change Data
values respectively to make a proper white balance.
[AV white balance adjustment]
3. Receive the 16-step gray scale composite video signal with Video [Video] mode.
4. Enter the service mode, select 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)
white level
Fig. 3-9
white level
(a)
white level
Fig. 3-10
3-12
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