CT-34WX50 - Panasonic TV Service Manual (repair manual). Page 22

- 22 -

Q

R

Q = R

7.0 ± 0.5

(cm)

(1) Receive an NTSC signal and set the aspect ratio to "NORMAL" mode.

(2) Enter into service adjustment mode and select the Concurrent mode "DEF ADJ".

(3) For "SIDE-PCC", "H-PARALLEL", "V-POSITION", "TRAPEZOID", "V-LINEARITY", "V-SIZE", "EW-CORNER

TOP", "EW-

CORNER

BOTTOM", and "V-S CORRECTION", enter the same adjustment values as for the adjusted NTSC "FULL" mode

with the "Volume +, Volume - " buttons on the remote control.

(4) Receive the built-in cross-hatch pattern of this unit,

and if the image geometry shows pincushion distor-
tion or distortion at the top or bottom, select "PCC",
"EW-CORNER TOP", or "EW-CORNER BOTTOM",
and adjust so that the distorted vertical lines
become straight lines.

(5) Confirm the image blanking width.

(6) Place a ruler against the surface of the picture tube and mea-

sure the measuring points Q and R (refer to the figure on the
right).

(7) If the measuring results show that Q or R deviates from the

specified values of the figure on the right, adjust the "H-POSI-
TION" with the "Volume +, Volume -" buttons on the remote
control so that the blanking width reaches the specified value.

*If the V-SIZE is not correct, select "V-SIZE" and perform
adjustment.
(Refer to page 29 for the "V-SIZE" adjustment method.)

*Do not select "BLANKING START/END" for the effective
screen and perform adjustment.

(8) After completion of the adjustment, Receive an NTSC signal with "NORMAL" mode for the aspect ratio and check the image.

*"PCC" adjustment method 

 Refer to page 29.

*"EW-CORNER TOP" adjustment method 

 Refer to page 30.

*"EW-CORNER BOTTOM" adjustment method 

 Refer to page 30.