Sharp 32LF-94EC Service Manual page 66

V_SHIFT
Apply a circle test pattern via RF, change Vertical Shift by pressing "? /? " buttons till the test pattern is
vertically centered. Horizontal line at the center of the test pattern is in equal distance both to upper and
lower side of the picture tube. Check and readjust V_SHIFT item if the adjustment becomes improper
after some other geometric adjustments are done.
It can be adjusted between 0 ... 63.
SERVICE BLANK
It is set ON to make vertical shift correctly centered. After adjustment of vertical shift, it is set as OFF to
unblank half screen of the picture.
VERT_AMP
Apply a circle test pattern via RF, change Vertical Amplitude by pressing "? /? " buttons till horizontal
black lines on both the upper and lower part of the test pattern become very close to the upper and
lower horizontal sides of picture tube and nearly about to disappear. Check and readjust VERT_AMP
item if the adjustment becomes improper after some other geometric adjustments are done.
It can be adjusted between 0 ... 63.
UPPER LIN.
Change Upper Linearity by pressing "? /? " buttons till all the size of squares of the test pattern become
in equal size from the top of the screen to its bottom of the whole screen. Check and readjust UPPER
LIN. item if the adjustment becomes improper after some other geometric adjustments are done.
(especially after than VERT_S_CORR. adjustment)
It can be adjusted between 0 ... 126.
LOWER LIN.
Change Lower Linearity by pressing "? /? " buttons till all the size of squares of the test pattern become
in equal size from the top of the screen to its bottom of the whole screen. Check and readjust LOWER
LIN. item if the adjustment becomes improper after some other geometric adjustments are done. It can
be adjusted between 0 ...126.
VERT_S_CORR.
Change Vertical S-Correction by pressing "? /? " buttons till the size of squares on both the upper and
lower part of test pattern become equal to the squares laying on the vertical center of the test pattern.
Check and readjust VERT_S_CORR. item if the adjustment becomes improper after some other
geometric adjustments are done.
It can be adjusted between 0 ... 126.
HOR SHIFT
Change Horizontal Shift by pressing "? /? " buttons till the the test pattern is horizontally in equal
distance both to right and left sides of the picture tube. Check and readjust HOR SHIFT item if the
adjustment becomes improper after some other geometric adjustments are done.
It can be adjusted between 0 ... 255.
HOR LINEARITY
Change Horizontal Linearity by pressing "? /? " buttons till all the size of squares of the test pattern
become in equal size from the top of the screen to its bottom of the whole screen. Check and readjust
HOR LINEARITY item if the adjustment becomes improper after some other geometric adjustments are
done. (especially after than HOR S CORR adjustment)
It can be adjusted between 0 ... 255.
HOR S CORR
Change Horizontal S Correction by pressing Left/Right buttons till the size of squares on both the upper
and lower part of test pattern become equal to the squares laying on the vertical center of the test
pattern. Check and readjust HOR S CORR item if the adjustment becomes improper after some other
geometric adjustments are done.
It can be adjusted between 0 ... 127.
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AK53 D.O.C. Service Manual 22/03/2004