Atari 2600

2600A Defective Matrix Troubleshooting Procedure
?artern LS disrupted
if blue or black lines
are missing or some
portmn of
the Mauix
faiis TO appear on the
TV screen.
The panern may iave errors,
but all nine bloc~s are xesent
on screen.
4
1
Is blue black grid panern
Swapout
Yes
dhrupfed? (See Figure 1) A200
k entire mauix
b8 for example bad
2) A202
now on screen?
pattern) 3) A20 1
d
b 4
1
i
1 Yo
Is upper Left block on
screen defective?
(Set Figure 4-6 or 4-7
ior correct oartern)
Pg. 6-22
0 Pg. 4-45
Is upper-m iddle
bbck defecrive?
Pg. 6-23
6
Pg. 6-22
Swapour Yes
1s middle-middle 1) A200
- [S middle-middle
block aefecrive? 21 A202 block now OK?
3) A201
a J
I
k lower-middle
block defective?
Pg. w5
Pg. 6-13
2600/2600A Domestic VCS