Repair manual

Adjustments Screen Voltage - 21
9. Looking at the Gray Bar
test pattern, turn the
screen voltage knob on
the flyback transformer
until:
the first bar is black
the second bar is
barely visible
the third bar is a dark
gray
Note: The surrounding
raster should also be black.
10.When the requirements
in step 9 are met, the
screen voltage is set
correctly. Proceed to the
cutoff adjustment.