Atari 400

8QQ
GREY BAR
TROUBLESHOOTING
Sw«p-out
A30I and
A302 on
CPU
Board
NO
Swsp
CPU
Board
Oo«9
9er««n look
Uk8 FiguTB
3-6
NO
Swap-out
AiQ3,
Q105
and A 104
OoM
serocn look |
YES
Uke Figure
3-6
Go to
ANY
VIDEO,.
}
Page 7-18
YES
Tr»ca
color circuitry
on
CPU
Board.
Make
certain
to check
color
delar circuit
and
R309
Does screen
look
y^?
like Figure
3-6
I
Go to
ANY
VIDEO
Page
7-18
NO
Go to
next page
ATARI
Home
Computer
7-15