Horizontal Centering (H-Pos); Horizontal Width Adjustment (H-Width); Horizontal Trapezoid Adjustment (Htrap); Parallelogram Adjustment (R524) - Panasonic CT-32SC13-1U Service Manual

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
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)
Min. Adjustment
Correct Adjustment
Figure 30. Trapezoid adjustment
the horizontal centering
Max. Adjustment

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
Min. Adjustment
Correct Adjustment
Figure 32. Parallelogram adjustment

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
Figure 33. SIDE adjustment
- 26 -
D6 connector
R524
Max. Adjustment
Max. Adjustment