Sony WALKMAN WM-F702 - Page 26

ef
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