Samsung CT20F3FNT Service Manual page 23

Alignment and Adjustments
4-3-9 RF AGC Adjustment
Set the AGC data to 33 (Factory Mode).
4-3-10 Sub-Color Adjustment
Set NSR data to 3 (Factory Mode).
4-3-11 Geometry Adjustment
SC →VS→VA→VSL→HS
1. Input a lion head pattern.
2. Set the SC (S-Correction) as 20(13V : 12) and
VS(Vertical Shift) 31 so that the lion head circle
becomes oval.
3. Adjust with VA (Vertical Amplitude) so that
the top margin of the picture is 4.
4. Adjust with VSL (Vertical-Slope) so that the
bottom margin of the picture is 4.
5. Adjust with HS (Horizontal Shift) so that the
lion-head pattern and CRT centers are aligned.
4-8
4
Fig. 4-7
4
Fig. 4-8
5
6. Adjust HS (Horizontal Shift) so that the left
and right margins of the picture are 5.
5
Fig. 4-9
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