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Kurzweil K2000 - Sound RAM Test Details (v0.4)

Kurzweil K2000
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SECTION 4
9
Calvin
Read
Only
Checksum
Teat
Fail
Connection
problem
between
Calvin
and
Hobbes
0
A
Hobbes
0
Read
Only
Teat
Fail
Connection
problem
between
Calvin
and
Hobbes
0
B
Hobbes
1
Read
Only
Test
Fail
Connection
problem
between
Hobbes
0
and
Hobbes
1
4.14.13
Option
Board
Test
As
of
this
writing,
the
K2000
sampling
option
has
not
been
released,
so
there
is
no
need
to
run
this
test.
In
fact,
this
test
is
extraneous,
since
installation
of
the
sampling
option
will
include
Version
2.0
K2000
Engine
software,
which
will
include
Version
1.0
of
the
diagnostic
software.
4.14.14
Sine
Wave
Test
Executing
this
test
enables
generation
of
sine
waves
at
the
following
frequencies:
20
Hz,
315
Hz,
630
Hz,
945
Hz,
1260
Hz,
2 KHz, 4 KHz,
and
8 KHz.
The
sine
wave
at
20
Hz
is
generated
as
soon
as
the
test
is
initiated.
Pressing
any
button
on
the
front
panel
(or
turning
the
Alpha
Wheel
one
click)
will
generate
the
next-highest
test
frequency.
The
unit
will
return
to
the
diagnostic
test
menu
when
the
sine
wave
is
at
8
KHz
and
any
front
panel
button
is
pressed
or
the
Alpha
Wheel
is
clicked
to
the
right.
This
test
is
intended
for
use
with
an
oscilloscope
connected
to
the
K2000's
audio
output,
and
enables
analysis
of
the
purity
of
the
sine
wave
generated.
If
the
sine
wave
is
impure,
a
problem
with
the
sound
engine
is
suggested.
To
monitor
the
Sine
wave
test,
connect
the
scope
to
any
of
the
B
outputs,
the
MIX
outputs,
or
the
Headphone
jack.
4.14.15
Sound
ROM
Test
This
memory
test
takes
about
five
seconds
to
run,
and
checks
the
data
integrity
of
the
K2000's
sound
ROM
(the
factory
sounds),
and
the
connections
between
the
sound
ROM
and
the
cpu.
The
test
is
a
simple
checksum
procedure
for
each
pair
of
Sound
ROM
chips.
Failures
are
indicated
as
data
or
address
failures,
as
described
in
the
overview.
The
display
indicates
the
success
or
failure
of
each
of
the
four
blocks
of
Sound
ROM
(A-D).
Each
block
corresponds
to
two
Sound
ROM
chips.
In
the
unlikely
event
of
a
failure,
the
engine
board
must
be
replaced,
since
the
Sound
ROM
chips
are
soldered
in
place.
4.14.16
Sound
RAM
Test
This
memory
test
checks
the
address
space
of
the
sample
RAM
(SIMMs).
The
purpose
of
this
test
is
to
determine
whether
the
K2000
recognizes
all
of
the
sample
RAM
that
has
been
installed.
The
more
RAM
that
has
been
installed,
the
longer
this
test
takes.
The
test
takes
approximately
80
seconds
for
each
RAM
block
containing
a SIMM,
regardless
of
the
SIMM's
size.
NOTE:
for
Version
0.4
of
the
diagnostic
software,
this
test
is
significant
only
if
the
unit
contains
SIMMs
of
4
megabytes
or
smaller.
If
the
unit
contains
larger
SIMMs,
the
test
will
indicate
success
even
if
the
SIMMs
are
20

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