Electrical Adjustments
12A/D Input adjustment [Component]
[1080i-A/D INPUT ADJUSTMENT]
1.Receive the
2.Enter the service mode.
3.Connect an oscilloscope to test point “TP13G” (+) and chassis ground
4.Select group no. “3”, Item no. “1” and adjust the ampli- tude “a” to be 1.35 ±0.1V by changing the Data value.
5.Connect an oscilloscope to test point “TP13B” (+) and chassis ground
6.Select Item no. “3” and adjust the amplitude “a” to be
1.35±0.1V by changing the Data value.
7.Connect an oscilloscope to test point “TP13R” (+) and chassis ground
8.Select Item no. “4” and adjust the amplitude “a” to be
1.35±0.1V by changing the Data value.
(a)
13Pedestal adjustment [Component]
[1080i-PEDESTAL ADJUSTMENT]
1.Receive the
2.Enter the service mode.
2.Enter the service mode.
3.Connect an oscilloscope to test point “TP531” (+) and chassis ground
4.Select group no. “5”, Item no. “11” and adjust the black level to be maximum amplitude by changing the Data value.
5.Connect an oscilloscope to test point “TP501” (+) and chassis ground
6.Select Item no. “12” and adjust the black level to be maximum amplitude by changing the Data value.
7.Connect an oscilloscope to test point “TP561” (+) and chassis ground
8.Select Item no. “13” and adjust the black level to be maximum amplitude by changing the Data value.
Black Level
Pedestal Level
[480p-A/D INPUT ADJUSTMENT]
1.Receive the
2.Enter the service mode.
3.Connect an oscilloscope to test point “TP13G” (+) and chassis ground
4.Select group no. “3”, Item no. “1” and adjust the ampli- tude “a” to be 1.35 ±0.1V by changing the Data value.
5.Connect an oscilloscope to test point “TP13B” (+) and chassis ground
6.Select Item no. “3” and adjust the amplitude “a” to be
1.35±0.1V by changing the Data value.
7.Connect an oscilloscope to test point “TP13R” (+) and chassis ground
8.Select Item no. “4” and adjust the amplitude “a” to be
1.35±0.1V by changing the Data value.
(a)
[480p-PEDESTAL ADJUSTMENT]
1.Receive the
2.Enter the service mode.
3.Connect an oscilloscope to test point “TP531” (+) and chassis ground
4.Select group no. “5”, Item no. “11” and adjust the black level to be maximum amplitude by changing the Data value.
5.Connect an oscilloscope to test point “TP501” (+) and chassis ground
6.Select Item no. “12” and adjust the black level to be maximum amplitude by changing the Data value.
7.Connect an oscilloscope to test point “TP561” (+) and chassis ground
8.Select Item no. “13” and adjust the black level to be maximum amplitude by changing the Data value.
Black Level
Pedestal Level
Note: These adjustments should be done after A/D Input adjustment [Component].