Atari 2600 Field Service Manual page 82

Figure 4-5. Defective Gray Bars Screen
This screen shows an example of a defective gray bars test screen. The appearance of
a black rectangle in t h e middle of a light gray bar means t h a t t h e data for t h a t p a r t of
t h e screen has failed t o be translated properly t o the TV. Any disruption of t h e
standard gray bars pattern (See Figure
4-4)
or any color in the gray bars screen
indicates a failure.
2600/2600A Domestic VCS