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AV-21PM
Measuring
Item
instrument
Adjustment
of
EW-PIN
Adjustment
of
TRAPEZ
Adjustment
of
V-LINEARITY
&
V-SCURVE
Adjustment
of
EW-CORNER
22
Test point
Adjustment part
8. EW-PIN
Straight
10. TRAPEZ
Parallel
4. VER. LINEARITY
5. VER. SCURVE
TOP
CENTER
BOTTOM
9. EW-CORNER
No. 56055
Description
18. Select 8. EW-PIN with the MENU a key.
19. Set the initial setting value of 8. EW-PIN with the MENU − / +
key.
20. Adjust EW-PIN so that the first vertical lines at the left and
right edges on the screen are straight.
21. Select 10. TRAPEZ with the MENU a key.
22. Set the initial setting value of 10. TRAPEZ with the MENU − /
+ key.
23. Adjust TRAPEZ so that the vertical lines at the left and right
edges on the screen are in parallel.
When the vertical linearity has been deteriorated remark-
ably, perform the following steps.
24. Receive a cross-hatch signal.
25. Select 4. VER. LINEARITY with the MENU a key.
26. Set the initial setting value of 4. VER. LINEARITY with the
MENU − / + key.
27. Select 5. VER. SCURVE with the MENU a key.
28. Set the initial setting value of 5. VER. SCURVE with the MENU
− / + key.
29. Adjust VER. LINEARITY and VER. SCURVE so that the spaces
of each line on TOP, CENTER and BOTTOM become uniform.
Observe the vertical lines at the four corners on the screen.
If they are not straight, correct them by performing the
following steps.
30. Select 9. EW-CORNER with the MENU a key.
31. Set the initial setting value of 9. EW-CORNER with the MENU
− / + key.
32. Adjust EW-CORNER so that the vertical lines at the four cor-
ners on the screen are straight.
(to be continued)
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