Marantz SD9000 - Page 16

eration
rogramming
operation,
the
mode
of
tape
opera-
1ot
be
selected
with
the
pushbuttons.
owing
describes
the
functions
of
pushbuttons
ted
circuits.
Unless
it
is
stated
otherwise,
the
in
the
STOP
mode
before
any
pushbuttons
are
mode
2
PLAY
button
pressed,
circuit
Q701
in
the
nputer
is
set
to
the
PLAY
mode
and
a
high
level
gnal
is
output
from
pin
31.
This
signal
passes
Q572,
R553
and
R554
to
turn
on
O516.
ime,
0517
is
OFF
and
the
signal
at
the
collector
ed
from
low
to
high
level
and
the
following
ns
are
performed.
8
is
switched
ON
via
R557,
R536
and
0536
and
amplifier
is
set
to
the
PLAY
mode
(see
Fig.
4.1)
slows.
Auting
control
circuit
)
-R
SUPPLY
)
o107
REC
AMP
MUTING
0207
one
LINE
OUTPUT
MUTING
0216
PlOO
* (PRE-AMP)
| | PK25
|
|
‘
(REC
MUTE)
PK2i
\Y
}
({COMPUTOR)
Suit:
ywer
ON,
the
circuit
is
activated
for
about
4
seconds
by
juting
signal.
suit: e
power
OFF,
C440
is
discharged
for
muting.
cuit:
ig
is
effected
in
any
modes
other
than
REC
and
PLAY.
ng
is
also
effective
in
REC-PAUSE
mode.)
muting
is
effective
in
any
mode
when
the
monitor
SW
100
is
in
the
SOURCE
position.
:
P100:
MUTE
is
effected
during
playback
so
that
the
signal
the
recording
circuit
does
not
enter
the
program
de-
r circuit.
a.
0643
is
switched
OFF
and
the
voltage
regulator
cir-
cuit
operates
to
supply
power
to
the
LED
meter.
b,
Q109
and
0209
are
switched
OFF
to
release
the
mut-
ing
function
of
the
play
output
circuit.
c.
Q111
and
Q211
are
switched
OFF
to
release
the
mut-
ing
function
of
the
recording
output
circuit.
(2)
Q534
is
switched
ON
for
about
0.5
sec
via
R557,
C515
and
Q569.
In
the
circuits
following
0534,
the
solenoid
drive
voltage
is
selected
as
discribed
previously
(Item
3.3).
(3)
Q523
and
Q527
are
switched
ON
via
R557,
Q568
and
R596.
The
brake
solenoid
LOO2
is
activated
to
release
the
braking
of
the
reel
disks.
(4)
Q522
and
0529
are
switched
ON
via
R557
and
R563.
PLAY
LED
O591
lights
and
play
solenoid
LOO1
is
activated
to
set
the
deck
in
the
PLAY
mode.
4.2
REC/PLAY
mode
The
deck
cannot
be
set
to
the
REC/PLAY
mode
unless
ANTI-REC
switch
S002
is
open.
Also,
the
deck
cannot
be
set
to
this
mode
manually
unless
PROGRAM
MODE
switch
S506
is
in
the
OFF/CA
position
and
COUNTER
MEMORY
switch
$504
is
in
the
OFF,
REWIND/STOP
or
REWIND
/REPLAY
position.
(1)
By
pressing
the
PLAY
and
REC
buttons.
simultane-
ously,
a
high
level
play
signal
and
recording
signal
are
present
at
Pin
31
and
Pin
32
of
the
micro-
computer,
respectively.
The
deck
is
set
to
the
PLAY
mode
by
the
play
signal.
The
recording
signal
functions
as
follows:
a.
0511
is
switched
ON
via
Q560,
0530
and
R532.
Q512
is
OFF
and
0513
and
0525
are
ON.
b,
REC
LED
Q593
is
lit
by
0513.
c.
REC
solenoid
L004
is
activated
by
Q525.
REC/PLAY
switches
$101
and
$102
in
the
amplifier
are
set
to
REC.
The
amplifier
is
set
to
the
recording
mode.
(2)
If,
during
the
PLAY
‘mode,
the
PLAY
and
REC
buttons
are
pressed
at
the
same
time,
the
deck
is
also
set
to
the
REC/PLAY
mode.
In
this
case,
the
following
operations
are
performed,
as
well
as
the
operations
given
in
a
through
c.
d.
Q512
is
switched:OFF
and
the
signal
at
the
collector
become
high
level.
This
signal
passes
through
R535,
C514
and
0563
to
activate
the
solenoid
drive
voltage
selector
circuit
following
0534.
Thus,
the
voltage
of
the
REC
solenoid
is
switched.
(3)
With
REC/MUTE
switch
S502
pressed
during
the
REC/PLAY
mode,
the
recording
amplifier
is
muted
and
hence
the
recording
signal
goes
off.
At
this
time,
the
display
indicates
second’s
digits
auto-
matically
regardless
of
the
position
of
the
program
setting
switch.
The
display
indicates
0-9
seconds
repeatedly
while
S502
is
pressed.
As
explained
previously,
a
blank
space
of
more
than
3
seconds
is
required
for
proper
operation
of
the
program
de-
tection
circuit,
so
that
length
of
blank
tape
can
be
determined
by
the
time
indicated
during
the
REC/
MUTE
operation.
4.3
PAUSE
mode
(1)
PLAY/PAUSE
1f
the
PAUSE
button
is
pressed
when
the
deck
is
in
the
STOP,
FF
or
REW
mode,
the
PAUSE
signal
is
not
output.
By
pressing
the
PAUSE
button
during
the
PLAY
mode,
the
PLAY
signal
(Pin
31
of
the
micro-
computer)
becomes
low
level
and
the
PAUSE
signal
(Pin
31)
becomes
high
level.
With
this,
the
tape
is
set
to
the
STOP
mode
and
the
amplifier
is
muted.
The
high
level
PAUSE
signal
has
the
following
functions:
a.
0524
is
switched
ON
via
R541
and
the
PAUSE
LED
Q592
is
lit.
b.
Q515
is
switched
ON
via
Q575
and
R558,
discharging
C522.
c.
0526
is
switched
ON
via
R542
(0526
does
not
func-
tion
at
this
time).
d.
0530
and
0531
are
switched
ON
via
R548,
0599
and
R692.
CUE/REV
solenoid
LO04
is
activated
by
Q531
(in
this
case,
the
solenoid
drive
voltage
selector
circuit
does
not
operate).
The
CUE/REV
solenoid
sets
the
head
base
between
the
STOP
and
PLAY
positions.
When
the
PLAY
button
is
pressed
in
the
PLAY/PAUSE
mode,
the
PAUSE
signal
level
becomes
low
and
the
PLAY
signal
level
becomes
high.
The
PAUSE
signal
goes
off
and
then
the
PLAY
signal
comes
on
about
25
msec
later.
CUE/REV
solenoid
L003
is
OFF
and
PLAY
solenoid
L001
is
ON.
(2)
REC/PAUSE
When
the
PAUSE
button
or
the
REC
and
PAUSE
but-
tons
are
pressed
in
the
REC/PLAY
mode,
the
tape
is
set
to
the
REC/PAUSE
mode.
In
either
the
REC/PLAY
or
REC/PAUSE
mode,
the
REC
signal
is
output
and
the
amplifier
is
set
to
the
recording
mode.
Other
functions
are
the
same
as
in
the
PLAY/PAUSE
mode.
4.4
FF
mode
When
the
FF
button
is
pressed,
FF
and
FAST
signals
are
output
from
Pin
27
and
Pin
26
of
the
microcomputer,
respectively.
The
FF
signal
has
the
following
functions:
a..
0549
is
switched
ON
via
R579.
The
slack
tape
re-
moval
circuit
stops
operating
when
0.549
is
ON.
b.
The
reel
motor
drive
circuit
is
activated
via
R570.
The
FAST
signal
has
the
following
functions:
c.
0515
is
switched
ON
via
Q573
and
R558
to
disable
the
PLAY
signal
circuit.
d.
0510
is
switched
ON
VIA
R531
to
disable
the
REC
signal
circuit.
e.
0534
is
switched
ON
momentarily
via
R559,
C516
and
O576
to
operate
the
solenoid
drive
voltage
selector
circuit.
f.
Q523
and
0527
are
switched
ON
via
R559,
Q571
and
R596
to
operate
BRAKE
solenoid
L002.
4.5
REW
mode
When
the
REW
button
is
pressed,
the
REW
signal
and
FAST
signal
are
output
from
Pin
28
and
Pin
26
of
the
microcomputer,
respectively.
The
functions
of
these
signals
are
practically
the
same
as
in
the
FF
mode.
4.6 STOP mode
In
any
of
the
following
cases,
the
deck
is
set
to
the
STOP
mode
during
any
mode
other
than
the
program
mode.
a.
When
the
STOP
button
is
pressed.
b.
When
the
SENSOR
STOP
switch
is
pressed.
c.
When
the
tape
reaches
its
end.
d.
When
PROGRAM
MODE
switch
S506
is
set
from
the
SINGLE
position
to
the
OFF/CA
position.
e.
When
the
COUNTER
MEMORY
switch
S504
is
set
from
the
PLAY/STOP
position
to
the
OFF
position
with
the
PROGRAM
MODE
switch
in
the
OFF/CA
position.
During
the
program
mode
operation,
the
SENSOR
STOP
switch
does
not
function.
When
unloading
the
cassette,
the
program
mode
operation
is
stopped
and
the
tape
deck
is
set
to
the
STOP
mode.
The
program
mode
operation
stops
by
the
procedures
given
in
the
above
items
d
ane
e.
4.7
Mode
transfer
When
the
mode
of
operation
is
transferred
from
A
to
B,
the
signal
in
Q701
goes
off
and
then
the
B
signal
is
out-
put
on
about
25
to
30
msec
later.
The
tape
deck
is
in
the
STOP
mode
until
the
B
signal
is
output.
When
the
mode
of
operation
is
changed,
the
tape
stops
once
and
then
starts
again.
4.8
Functions
of
operation
buttons
When
more
than
one
operation
button
are
pressed,
the
priority
of
the
mode
is
determined
by
the
microcom-
puter.
Except
when
the
PLAY
and
PAUSE
buttons
are
pressed,
the
tape
mode
is
determined
by
the
button
which
is
released
last.
The
relationship
between
the
operation
buttons
and
the
modes
of
operation
is
as
follows:
a.
STOP
button
and
any
one
of
REW,
FF,
PLAY,
PAUSE
and
REC
buttons...
STOP
mode.
b.
REW
button
and
FF
button.
..STOP
mode.
c.
REW
(or
FF)
button
and
any
one
of
PLAY,
PAUSE
and
REC
buttons...
REW
(or
FF)
mode.
d.
PLAY
button
and
PAUSE
button
(1)
When
the
PLAY
button
is
pressed
first
..
.
PLAY
mode
(or
the
mode
of
the
button
released
last).
(2)
When
the
PAUSE
button
is
pressed
first
. . .
STOP
mode
(STOP
mode
when
the
PLAY
button
is
re-
leased
first,
and
PLAY
mode
when
the
PAUSE
button
is
released
first).