Philips DPTV400 Series, Руководство по обучению

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Repeat the Offset Adjustment as they may have shifted slightly.
Set the remaining registers as follows.
RGB-R Gain = YPbPr-R Gain
RGB-G Gain = YPbPr-G Gain
RGB-B Gain = YPbPr-B Gain
RGB-R Offset = YPbPr-R Offset - 55
RGB-G Offset = YPbPr-G Offset
RGB-B Offset = YPbPr-B Offset - 55
Gray Scale Alignment
The GDE menu is used to to adjust Gray Scale (White Tone) and Geometry. There is only one set
of Geometry and Convergence settings in this set.
The Service Blank selection blanks the bottom half of the screen. This is useful when adjusting the
Yokes to center the picture.
Before selecting the Geometry adjustment, the Convergence should be disabled. Use the Cursor-
Right button on the remote to disable Convergence. Apply a cross hatch pattern to the set and pro-
ceed with the Geometry adjustment. If the set is equipped with the Intellisense auto convergence
system, a Convergence alignment must be performed after making any changes to the Geometry. If
the Convergence alignment is not performed, the set will be out of convergence when the Customer
selects the Auto Convergence feature.
1. Enter the SAM mode as previously described.
2. Set Brightness and Picture to midrange. Set Sub-Bright to 31.
3. Set Cutoffs to 31.
4. Set Red Drive to 20.
5. Set Green Drive to 50.
6. Set Blue Drive to 30.
7. Turn all three G2 controls counterclockwise.
8. Apply a black level signal (0 ire) to the set. Using an Oscilloscope, set the Cathode voltage of
each CRT to 172 volts DC. Adjust 3226 on each of the CRTs.
9. While looking directly in each tube, turn the G2 control for the corresponding CRT until the pic-
ture is just visible.
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