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Kurzweil K2000 - Specific Component Test Descriptions (v1.0); EPROM, I;O Port, and Interrupt Tests; PSRAM Test Description

Kurzweil K2000
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SECTION 4
disk
controller
are
being
received
by
the
CPU's
IRQO
pin.
Failure
of
this
test
indicates
a
defective
connection
between
the
CPU's
IRQO
pin
and
floppy
disk
controller,
and
could
identify
the
cause
of
malfunctions
in
the
floppy
disk
drive.
4.21.7
Audio
Board
Teat
Another
1/0
test,
this
checks
the
connections
between
the
engine
and
audio
boards.
When
you
run
this
test,
the
LCD
will
always
display
"Success,"
but
this
should
be
ignored,
since
it
doesn't
indicate
the
success
or
failure
of
the
test.
In
a
successful
test,
the
eight
LEDs
to
the
left
of
the
LCD
will
flash
in
sequence
(from
top
left
to
bottom
left
to
top
right
to
bottom
right)
at
300
ms
intervals.
A
failure
of
any
of
the
LEDs
to
light
indicates
a
defective
LED
or
a
faulty
connection
between
the
engine
and
audio
boards.
4.21.8
MIDI
OART
Teat
This
1/0
test
checks
the
operation
of
the
MIDI
In
and
Out
ports.
Before
executing
this
test,
connect
a MIDI
cable
from
the
K2000's
MIDI
Out
port
to
its
MIDI
In
port.
A
failure
of
this
test
is
indicated
in
the
display
as
a
data
failure
as
described
in
the
overview.
If
this
test
fails,
repeat
the
test
with
a
different
cable.
If
it
still
fails,
this
indicates
that
one
or
more
pins
in
the
MIDI
Out
andlor
MIDI
In
port
is
defective.
4.21.
9
!'DC
Teat
A
blank
formatted
floppy
disk
(DOS
1.4M)
must
be
inserted
in
the
floppy
disk
drive
before
initiating
thia
test.
The
test
cannot
proceed
without
a
disk
inserted
in
the
drive.
The
FDC
(floppy
disk
controller)
test
is
an·
1/0
test,
and
checks
the
functionality
of
the
NEC
PD72064
chip,
the
floppy
disk
drive,
and
their
connections.
The
test
entails
sending
a
test
data
pattern
from
the
floppy
disk
controller
(FDC)
to
the
floppy
disk
drive
(FDDl
and
back.
If
the
display
indicates
a
successful
test,
then
the
connections
between
the
FDC
and
FDD
are
functioning,
and
the
test
data
pattern
written
by
the
FDC
and
read
from
the
FDD
are
identical.
If
the
display
indicates
"Read
Fail,"
there
is
a
problem
in
the
connection
from
the
FDC
to
the
FDD.
If
it
indicates
"Write
Fail,"
there
is
a
problem
in
the
connection
from
the
FDD
to
the
FDC.
If
the
display
indicates
"Data
Fail,"
the
read
and
write
operations
are
normal,
but
the
"read"
signal
and
the
"write"
signal
do
not
match.
In
this
case,
the
display
will
indicate
a
data
failure
as
described
in
the
overview.
4.21.10
SCSI
Test
This
1/0
test
is
similar
to
the
FDC
test,
and
checks
the
functionality
of
the
SCSI
port.
If
no
SCSI
device
is
connected
to
the
unit's
SCSI
port,
this
test
will
fail.
This
does
not
necessarily
indicate
a
malfunction
of
the
SCSI
link.
To
be
sure
that
the
SCSI
link
is
operational,
you
should
connect
a
SCSI
device
before
running
this
test.
4.21.11
Calvin
and
Hobbea
Tests
The
13-step
Calvin
and
Hobbes
memory
test
checks
the
connections
between
the
CPU
and
the
three
VLSI
sound
engine
chips:
Calvin,
Hobbes
0,
and
Hobbes
1.
Calvin
handles
sample
fetching
tasks,
and
Hobbes
a
and
1
primarily
perform
wave
form
generation
and
DSP
functions.
35

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