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3. IC TERMINALS
*«
{C701
System
Controller
(MSM6404A)
This
controller
turns
ON/OFF
of
the
DDC,
motor,
plunger, redio, and
LED
and
performs
tape end detection,
mute
control,
etc.,
according
to
the
input
from
each
switch.
No[ Sisnat [170[
Function
[No] Signal [Ivo]
Function
1
LED2
Reverse
LED
output
of remote
23
BEEP
BE, .* sound
to [C104
(Head
amp)
controller,
"L" : Lights,
output,
2 | FWD
LED]
© | Forward LED output of main unit.
Approximately
"L" : Lights
928, 5
g
a
—o
_—
3
REV
LED
0)
Reverse
LED
output
of main
unit,
1
rT
| eee ke
|
"L" : Lights,
4
OSC
O
O
Clock
output,
Not used for this unit.
3
OSC
I
I
Clock
input (500kHz).
Plunger (PM1) ON/OFF
control
m
en
.
io
F
output, This
sends
a lead-in
pulse
1 6
RESET
i
System
reset
input,
"L" : Reset,
in PAD:
fiode
2nd.
tees
ead
\
ve
Not
used
for
this
unit,
pulses
in REV
mode
to plunger,
|
8
WAKE
UP
Microcomputer
start
up
and
input
Approximately
20mS
when
radio section,is
in operation,
*2
7
=
9
END
I
Reel base rotation
detection
input.
=a
PULSE
If the
input
voltage
does
not
a
,
ON/OFF
change
for more
than
1,6 seconds
RECTOR
ELAS
ae
in play
mode,
it is judged
as
the
aes
is
H"
: Rotate,
"L"
: Stop.
end
of tape,
:
:
Motor
brak
tput,
"L" ; Brake,
10 | HEAD
| | PLAY switch ($7030) input.
Pe
ee
erg
"L" :PLAY(in
status with
the head
Motor
rotation
direction
control
base raised
up).
output,
;
;
d
"H" : Clockwise,
ll
FWD
I
Playing
head
FWD/REV
selecting
ar.
gen
switch
(S702) input,
: Counterclockwise.
"L" : FWD,
Open : REV.
29
DDC
CTL
DC-DC
converter
(DDC)
control
12 | MUTE
O | Mute output for {C103 (EXDBB).
Suepits coer TIS HORE 0,
te Neen
ppm
4
DDC
ON
when
DDC
starts
up
and
H" : Mute,
the
microcomputer
starts
operation
|
13 | A/B
SW
I
A/B
sides detection
switch
(S704)
by pressing
the switch
of the main |
input, Not used for this unit.
unit or the remote controller,
(Always GND).
Furthermore, this port is set in "L" |
14
=
=
Not
used
for this unit,
mode
approximately
eight seconds
|
—
:
;
after
pressing
the
STOP
key, or
18
7
:
Not
used
for this
unit.
when
the
operation
has
been
16 | GND
-
Power
terminal
(GND).
stopped
by shutting
off the this
,
port, the DCC
is turned
OFF,
17
-
=
Not
used
for
this
unit,
3
-
Not
used
for
this unit,
-
Not
used
for
this
unit,
a
pk
aise
a
een
18
PROG
a
ease
s
es
fog
;
'
|
(Always
GND).
31
-
Not
used
for
this
unit.
| 19
R, CT.
When
turning ON
radio
section:
"H".) 32
=
Nort
used
fer
this
unit,
20
CARE.
oO
When
pressing
RADIO
ON/BAND
33
-
Not
used
for
this
unit.
er
San EER
RnR
OPE a emote comteoleny Shs
34 | DIR
HRECTION moce switch (S701A)
| 21
PTs
10)
When
pressing
PRESET
TUNE
of
MODE
the remote controller : "L",
(Peas,
aS
:
:
;
i
gad.
=
=
Not
used
for
this
unit.
33
=
Net
used
for
tis
unit
:
ah
Mere
oe aes
ate
Ae
Se SP
a
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