2. Refer to Figure 5-3, for correct screen display.
• Check the V’s in the upper right of the screen to be sure they are
not inverted.
• Observe if any of the vertical bars are missing or appear in a
different sequence than Figure 5-3
Figure 5-3. Any Video Test Screen Display
G = GRAYBAR TEST
1. Enter Command Letter 'G', carriage return (or spacebar).
1. Refer to Figure 5-4 for screen display appropriate to this test.
• Screen is divided into eight equal horizontal bars.
• The shading begins with the horizontal bar at the top of the screen
being black and increments gradually to the bottom horizontal bar
being white. The top four horizontal bars can be noticeably
different in color shade than the bottom four horizontal bars.
5-10 System Service Manual
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