Atari 2600 Field Service Manual page 110

2600A klatrix Test Procedure
teen
push "left"
dlff~culty r w ~ t c h
.
Does screen
match Figure rb?
Put
i n shortin3
1
I
Does screen
match Figure
4-7?
Pg. 6-16
"Came Select"
Did Lower middle
block on screen
nun
black i n center?
Push down
"9eset"
switch (SLOS)
b
Does
lower middle
block
turn black on
Pg. 6-8
Pg. 6-17
2600/2600A Domestic VCS