AV-48WP74 AV-56WP74 3.8.5 VIDEO ADJUSTMENT Item A-D CONVERTER OFFSET adjustment (1) Measuring instrument Signal generator Remote control unit Test point Adjustment part [1.PICTURE/SOUND] F44 : Image adjustment F45 : Image adjustment of mode change F47 : Minimum value B at the time of detection F48 : Maximum value A at the time of detection [8.PP] ADM012 : R offset AMD013 : G offset AMD014 : B offset
Upper side of screen whole black
Description [WHITE BALANCE LOW LIGHT ADJUSTMENT for SINGLE SCREEN] (1) Input the 480i (DVD) whole black signal from the COMPONENT VIDEO terminal. (2) Select STANDARD mode with [VIDEO STATUS] (3) (4) (5) key. Select FULL mode with [ASPECT] key. Select 1.PICTURE / SOUND from SERVICE MENU. It goes into the zero mode screen of difference adjustment of color, using <F44>(Image adjustment) as 0 to 1, and using <F45>(Image adjustment mode change) as 0 to 3. Set <F47> (minimum value B at the time of detection) to 0 and <F48> (maximum value A at the time of detection) to 0.
(6)
Fig. 1 <FULL screen> To be slightly whitish rather than whole black
(7) Press [MUTING] key and memorize the set value. (8) Press [BACK] key and display SERVICE MENU screen again. (9) Select 8. PP from SERVICE MENU. (10) Adjust <ADM012> (R offset setup) and <ADM014> (B offset setup) so that the adjustment result out put screen in the upper half of a screen becomes black color.(Fig.1) (11) If the screen is reddish, adjust <ADM012>(R offset setup) so that the redness is reduced to the minimum. (12) If the screen is bluish, adjust <ADM014>(B offset setup) so that the blue is reduced to the minimum. (13) Press [MUTING] key and memorize the set value. [BRIGHTNESS ADJUSTMENT for SPLIT RIGHT
Fig. 2 <SPLIT screen>
SCREEN] (1) Select STANDARD mode with [VIDEO STATUS] key. (2) Select FULL mode with [ASPECT] key. (3) Press [SPLIT] key to enter the SPLIT screen mode, then input gray scale signal on both left and right channels. (4) Select 1.PICTURE/SOUND from SERVICE MENU. (5) It goes into the Y adjustment MAX mode, using <F45> as 0 and using <F44> as 0 to 1. (6) Set <F47> to 16 and <F48> to 16. (7) Press [MUTING] key and memorize the set value. (8) Press [BACK] key and display the SERVICE MENU. (9) Select 8. PP from SERVICE MENU. (10) Adjust <ADM013> (G offset setup) so that the screen on the right upper side becomes slightly whitish rather (6% black) than whole black.(Fig.2) (11) Press [MUTING] key and memorize the set value.
(No.52105)1-55
