FOCUS ADJUSTMENT
1)
Set brightness control to center and contrast control to maximum.
2) Display
allIH"
character pattern.
3) The optimum focus of the display is obtained by adjusting the focus control
of
FBT for best focus
in
which
the
center and corner are nearly same.
WHITE BALANCE ADJUSTMENT
1) Turn the video gain controls of
Rand
G counterclockwise, set the sub-contrast control VR103 at center position
and adjust RGB bias controls R809, R819 and R829 close to the minimum position.
2) Turn the contrast control to maximum the Brightness Control at center position, and Sub-brightness control
VR861 to center.
3)
Input a black level signal
4) Adjust the screen control
on
FBT until the raster just appears.
5)
Adjust the RGB bias control so that
the
raster shows white.
6) Adjust the screen control on FBT until the raster just disapears.
7) After inputting a white pattern signal, adjust the video gain control of
Rand
G so that display area shows white.
8) Adjust the sub-control
VR1
03 so that the Brightness is about 25ft-L.
9)
After adjusting the white balance, rotate the contrast control from maximum to minimum and make sure that
the
white balance is
not
changed. If something is wrong, readjust the white balance.
STATiC
COi~VERGEt..JCE
ADJUSTrv'Et~T
1)
Apply a magenta crosshatch pattern on display.
2) Adjust the focus from the best overal focus on the display.
Also adjust the brightness to desired condition.
3) Vertical red and blue lines are converged by varying the angle between the two tabs of the 4-pole magnests.
4) Horizontal red and blue lines are converged
by
varying the tabs together, keeping the angle betweeh them
constant.
5)
Apply a white crosshatch pattern on display.
6) Vertical green and magenta lines are converged
by
varying the angle between the two tabs
of
the 6-pole
magnets.
7) Horizontal green and magenta lines are converged by varying the tabs together, keeping the
angle
between
them constant.
20
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