Atari 2600

Pink a Getn
Not Ud
C r een
Not Used
Cunc
Ret
Switch
Gem
Not UA
Figure 4-8. Diagnostic Va tr ix Screen
with Defective Pattern
Came
kka
Switch
Any missing grid lines or disrupted rectangles indicate an I/O line failure (see page 4-26).
Any missing or disrupted blue or black reference lines indicate that there has probably
been
a microprocessor failure (see page 4-23).
Game
Rex t
Switch
2600/2600A Domestic VCS