- 26 -
Service adjustments (electronic controls, cont.)
Horizontal centering (H-POS)
This adjustment helps to center the picture horizontally
Preparation:
Apply a pattern that permits the centering of the
image.
Procedure:
1.
In
the
service
mode
for
making
electronic
adjustments.
Select
the
horizontal
centering
adjustment DAC “H-POS” and adjust until the
center of the monoscope pattern is centered on
CRT.
2.
Exit the service adjustment mode.
Horizontal width adjustment (H-WIDTH)
Preparation:
Apply a pattern that permits the centering of the
image.
Procedure:
1.
Adjust “VRAS” data so that the picture is in the
center and lines are straight (check mark on CRT
sides).
2.
Apply a crosshatch pattern.
3.
Adjust “PCC” data to make lines straight.
4.
Adjust “H-WID” data to correct the horizontal width
of the image.
5.
Adjust “VEAMP” data to correct vetical size of the
image.
Horizontal trapezoid adjustment (HTRAP)
Preparation:
1.
Apply a crosshatch pattern
2.
Normalize the picture settings.
Procedure:
1.
Enter service mode, select “HTRAP” and adjust
DATA so that horizontal lines are straight
(see Fig. 30)
Parallelogram adjustment (R524)
R524 is a variable resistor located on D-Board by
connector D6
Preparation:
1.
Apply a crosshatch pattern
2.
Normalize the picture settings.
Procedure:
1.
Remove the back cover.
1.
With a screwdriver adjust R524 (D-Board) so that
lines become straight (see Fig. 32).
Figure 31. R524 location
East west PCC balance adjustment (SIDE)
Preparation:
1.
Apply a crosshatch pattern
2.
Normalize the picture settings.
3.
Set picture mode to VIVID
Procedure:
1.
Enter service mode, select “SIDE” and adjust so
that lines at right and left are vertical like solid line.
(see Fig. 33)
Min. Adjustment
Correct Adjustment
Max. Adjustment
Figure 30. Trapezoid adjustment
R524
D6 connector
Min. Adjustment
Correct Adjustment
Max. Adjustment
Figure 32. Parallelogram adjustment
Min. Adjustment
Correct Adjustment
Max. Adjustment
Figure 33. SIDE adjustment
Summary of Contents for CT-32SX12CF
Page 50: ... 50 A Board ...
Page 52: ... 52 ERJ6GEYJ183V NP2AH037AC ERENCES A Board ...
Page 53: ... 53 A Board ...
Page 56: ... 56 D Board ...
Page 57: ... 57 D Board ...
Page 58: ... 58 D Board ...
Page 61: ... 61 notes NOTES ...
Page 62: ... 62 G Board ...
Page 63: ... 63 G Board ...
Page 64: ... 64 G Board ...
Page 66: ... 66 L Board ...
Page 67: ... 67 L Board ...
Page 68: ... 68 A PCB ...
Page 69: ... 69 A PCB ...
Page 70: ... 70 D PCB ...
Page 71: ... 71 D PCB ...
Page 72: ... 72 G PCB ...
Page 73: ... 73 G PCB ...
Page 74: ... 74 L PCB ...
Page 75: ... 75 notes NOTES ...