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ELECTRICAL ADJUSTMENTS.
ITEM
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ADJUSTMENT PROCEDURE
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Focus adjustment
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# Enter the Service Mode and select any register
item. # Press TV/Video button on the remote control until the balck
corss bar pattern appears on the screen.
# Asjust Focus control in the
line output transformer (Top One) for well defined scanning lines on the
picture screen.
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Sub-Brightness [BRTC] [Note: Constrict picture height until the vertical retrace line
appears adjusting the item HIT (Height)]
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# Set contrast to minimum and brightness to center by adjusting
user controls. # Set the TV in service mode to get white cross bar of inside
pattern. # Select BRTC , and adjust
the Volume Up/Dn to reduce the value, so that white portion of inside pattern
slightly light. # Adjust Vol Up/Dn to
increase the data value of BRTC, and set it just before the difference
between the belt of the vertical retrace, and the border of black portion of
inside pattern is visible. After
that, return vertical height and
contrast.
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Horizontal position adjustment [HPOS]
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# Set the TV in service mode and get black or white
cross-bar signal with video button on the remote control. # Select either HPOS (Horizontal Phase) or
VPOS (Vertical Phase) with Channel Up/Dn buttons, and adjust the horizontal
or vertical picture position to the
center of the screen with Volume Up/Dn buttons.
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Vertical amplitude adjustment. [HIT]
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# Set the TV in service mode, and get black or white
cross-hatch signal with video button on the remote control. # Select HIT with Channel Up/Dn buttons
and adjust the vertical amplitude by using Vol Up/Dn buttons, so that the
first bar on cross hatch signal touches the edge of the screen.
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White balance adjustment.
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# Set contrast to ‘40’ and brightness to ‘+20’ by picture
control. # Set TV in Service Mode and
get the inside W/B adjusting signal with video button. # Select R-Cut, G-Cut and B-cut with
Channel Up/Dn buttons to set individual values to initial reference data with
Volume Up/Dn buttons on the remote control.
# Press [-/---] button on the remote control and rotate screen VR to
get a slight horizontal line on the screen.
For every pressing of [-/---] button provides Horizontal line picture
and normal picture alternately. #
Press [-/----] button to release horizontal line picture, and select the tow
other colors which did not light in the above step with Channel Up/Dn
buttons. Then tap Volume Up/Dn
buttons so that three colors slightly light in the same level. *To correct white balance in light area,
select GDRV with Channel Up/Dn buttons to adjust. ** To correct white balance in dark area, perform fine
adjustment of R-Cut, G-Cut and B-Cut.
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