If the early configuration is being tested, the following will
also be displayed;
TESTING
SF
ROM ROW 3
TESTING
SF
ROM ROW 4
TESTING
SF
ROM ROW 5
TESTING
SF
ROM ROW 6
If LOOP ON TEST
is
selected,
the
message:
LOOPING ON TEST
will be displayed,
on
the second line of the display, and the test will
repeat until
an
error
is
detected or
SELECT
is
pressed and held until
Row 6 (early configuration) or row 2 (current configuration) has
been tested.
OPTIONAL SOUND FILE ROM
Optional sounds are Sound Blocks
A,
B,
C and
D.
In
the early
configuration Sound Blocks A and B are installed
on
a daughter board.
The daughter board sound file
ROM
is divided logically into eight
rows of ten ROMs each.
Physically, there are actually only two
rows of ten 1 M ROMs each.
In
the later configuration optional sound
blocks are installed
in
rows 3 through 6
on
the CGP board.
If a checksum error occurs during the test, the
ROM
component
number
on
the CGP or daughter board will be displayed along with
the expected checksum
(GOOD)
and
the actual checksum (BAD):
EXAMPLE:
CGP
ROM CHKSUM ERR U26
GOOD: 9FEA BAD: 7894
NOTE: A
checksum
of
8000
indicates that
the
ROM
could
not
be
read
or
the location
is
empty.
Kurzwell 250 Service Manual, Chapter 4
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