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2.4 Clamp 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 "TPG1" (+) and chassis ground (–).
4. Select group no. "0", item no. "0" and change data value to adjust the pedestal level
and black level to be the same level.
5. Connect an oscilloscope to test point "TPR1" (+) and chassis ground (–).
6. Select item no. "1" and change data value to adjust the pedestal level and black level
to be the same level.
7. Connect an oscilloscope to test point "TPB1" (+) and chassis ground (–).
8. Select item no. "2" and change data value to adjust the pedestal level and black level
to be the same level.
2.5 Clamp Adjustment [COMPONENT]
1. Receive the 16-step grey scale component signal [480p] with Computer2
[Component] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point "TPG1" (+) and chassis ground (–).
4. Select group no. "0", item no. "0" and change data value to adjust the pedestal level
and black level to be the same level.
5. Connect an oscilloscope to test point "TPR1" (+) and chassis ground (–).
6. Select item no. "1" and change data value to adjust the pedestal level and black level
to be the same level.
7. Connect an oscilloscope to test point "TPB1" (+) and chassis ground (–).
8. Select item no. "2" and change data value to adjust the pedestal level and black level
to be the same level.
Fig. 3-4
Fig. 3-5
3-13
Part 3: Adjustment
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