Atari 400

Table
3-2
Defective
RAM Boards
Defect
Indicator
Description
Bifr
ist SK Block
2nd
8K Block
B5;
or
B4
and
B5
B6;or
B*
and
B6
B5
and
B6;
or
Ba,
B5
and
B6
B7;
or
B4
and B7
3rd 8K Block
*th 8K Block
5th
8K Block
Compare
rows
D
and E,
if there
is a difference
between
any one column
use Table
3-3
to
identify
specific
defective
chips. If
more
than one
column is different
replace the
7£fL52^4
chip
and
retest.
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