Marantz SD9000 - Page 8

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tk
SS
eet
wtabee
Se
Se
ee
ane
Cate
nee
ee
Ree
oe
Pc
BD
ga
i
a
my
gh
aE
meh
sce
eae
ie
Fes
ae
Er
aE
or
2ms
(1)
through
(8)
below
are
basic
requirements
(8)
Pin
36
Fig.
2.4
Operation/program
signal
input
circuit
rating
the
microcomputer.
Normally,
a
voltage
of
10V
is
applied
to
this
terminal.
11,42
When
the
voltage
becomes
OV,
the
display
automatically
ind
pin
42
are
the
external
terminals
of
the
clock
indicates
the
time.
or
LC.
The
internal
circuits
of
the
microcom-
must
be
synchronized
with
the
clock
signal
for
(9)
Pin
31
operation.
Incorrect
oscillation
of
clock
signal
This
is
the
GND
terminal.
ult
in
misoperation
of
the
microcomputer.
ock
signal
at
pin
1
should
be
a
sine
wave
signal
ut
3.2
Vpp/400
kHz
(including
a
7.6V
DC
com-
).
n6
is
the
counter
pulse
input
terminal.
Pulses
are
d
by
the
up/down
counter
in
the
microcomputer.
PLAY,
FF
or
PAUSE
mode,
the
pulses
are
d
up;
in
the
REW
or
REVIEW
mode
they
are
d
down.
When
no
counter
pulses
are
preset
at
5
Balk
aros
*aros
tavor
Farce
Parc
Sazoz
fazos
Paros
R72
wer
eel
ell
elke
rminal
and
tape
is
being
transported,
the
COUNT-
PLAY/STOP.
5 ‘OFF
se!
9580
e567
«(588
0589
9590
[0594 0595,
IEMORY
will
not
function.
an
A)
pulse
input
duration
is
less
than
2.0
seconds,
the
Laan
ep
My
eS
»—o—0—
“oo
—9
ack
stops
automatically.
Input
port
B
Output
port
E
Input/output
!nput/output
port
D
port
C
.
Q701
wPOS46C
n7
s
the
reset
signal
input
terminal.
When
a
high
level
.
:
:
:
.
;
.
is
applied
aa
SHieystanienl
circuits
of
ip
gieetis
Besides
the
signals
outlined
previously,
there
are
the
In
the
microcomputer,
these
signals
are
synchronized
iter
are
reset
aa
all
functions
stop
input
circuits
for
the
operation
signals
(PLAY,
FF,
etc.)
with
the
clock
signa!
and
processed
together
to
deter-
becomes
high
level
just
after
ane
power
is
con-
to
select
the
mode
of
operation
of
the
SD8000
and
mine
the
mode
of
operation
with
the
aid
of
the
opera-
/to
the
SD8000,
regardless
of
whether
the
power
for
the
program
setting
signal
(START,
SKIP,
etc.).
tion
and
program
switches,
input
and
output
signals
and
is
ON
or
OFF.
Under
normal!
circumstances,
Refer
to
Fig.
2.4.
their
timing.
ltage
at
Pin
7
is
OV.
n
20,
21
Operation/indication
signal
output
circuit
)
is
a
test
terminal
and
Pin
21
is
the
power
ter-
Refer
to
Fig.
2.5
est
terminal
is
connected
to
the
power
supply
Fig.
2.5
Control/Indication
signal
output
circuit
it
is
not
used.
The
power
voltage
should
be
+10V
+10V
+10V
OFF/CA
SINGLE
in
33
°
;
an
input
terminal
for
the
power
frequency
select
*
ts
The
time
signal
of
the
SD8000
is
obtained
by
|
1g
the
power
frequency,
so
the
frequency
divider
microcomputer
needs
to
be
given
the
proper
fre-
y
division
ratio
according
to
the
power
frequency
z
or
60
Hz).
Pin
33
is
OV
(GND),
the
frequency
division
ratio
;
cE
),
and
when
it
is
10V,
then
the
ratio
is
1/60.
Tape
deck
operation
signal
(open collector)
Q702, Q703
Buffer driver
timer OP e|
TIMER OFF
-
&
> TIMER REC
SAM
RAM
PRG PAUSE
TIMER ON
mg
rene
t
Qsos.
RSBl QSO4
R580 Q714
Wr
iad
R383 OS06
R576
in 34
s
the
input
terminal
for
the
time
and
timer
signals.
se
signal
of
10V
with
the
power
supply
frequency
1
be
applied
to
this
terminal.
Otherwise
the
cor-
ime
will
not
be
indicated
and
the
timer
recording
on
will
not
operate
correctly.
CUE /REVIEW.
Output
Output
Output
Output
Output
Input/output
port!
portH
port
G
port
F
port
E
portD
portC
Q701 uwPD546C
in 35
is
the
input
terminal
for
the
program
detection
The
programs
to
be
played
are
controlled
by
the
;
(1)
Tape
deck
operation
signal
PLAY
mode
as
long
as
the
signal
is
high
level.
In
the_
...
d
signals.
When
the
deck
is
in
the
playback
mode,
This
signal
is
delivered
from
output
ports
H
and
|
to
timer
recording
(or
playback)
mode,
a
high
level
signal’
gnal
is
OV
for
recorded
portions
of
tape,
and
10V
,
determine
the
mode
of
operation
of
the
tape
.deck.
-
is
output
from
Pin
22
of
output
port
G.
For
the
func:
““
ank
portions
between
programs
(where
no
signal
For
example,
in
the
PLAY
mode,
a
high
level
signal
is
tions
of
the
circuits
in
each
operating
mode,
refer
to
corded
on
the
tape).
gutput
by
Pin
31
and
the
tape
deck
remains
in
the
Section
4
‘’Tape
Operation’’.