Technics RS-B965 - TERMINAL FUNCTION OF ICS; IC901 Microcomputer Pinout

RS-B965
Mi
TERMINAL
FUNCTION
OF
IC’S
¢
1C901
(MB88511-250N):
MICROCOMPUTER
(This
microcomputer
is
used
for
mechanical
operation.)
ae
Line
out
mute
signal
(“H”...ON,
“L”...OFF)
|
1
[oo
direct
[oo
direct
operation
det.
signal
=|
det.
signal
eopges
wy
DIRECT
.
RMT
REC
AMP
mute
signal
(“H”...ON,
“L"...OFF)
CD
direct/LINE
input
select
control
signal
(“H"...CD
DIRECT,
“L”...LINE
INPUT)
ele BIAS OSC ON/OFF control signal
(“H"...OFF,
“L"...ON)
|
se
OFF
un
oF
pate
Bloat
BiDolby
un
oFF|octey
B|ooty
c|
abe
|
Dolby NR
‘
REC
LED
ON/OFF
control
signal
nn
(“H"...OFF, “L"...ON) "8
MPX coil ON/OFF control signal
(“H"...MPX OFF, “L"...MPX ON)
PLAY LED ON/OFF controi signal
(“H"...OFF, “L”...ON)
Two head/Three head select signal
(“H” ... THREE HEAD)
Power eject motor open control signal
(“H”...OPEN, “L”...CLOSE/STOP)
EJECTR
Tape/Source
monitor
select
contro!
(“H"... TAPE MONITOR,
TIS
“L" SOURCE MONITOR)
fer | mace | Cassette half det. SW terminal (“L”...ON)
fa
Bee
|
[ieee
aniwnen
|
20 | ARM | ot | Auto Rec Mute key signal (“L”...PUSH)
[am
[=
[emmeeoe
eam
[=
[emeeoe
[ef
6
[=
[menor
Key SW input
(STOP/FF REW/PLAY/REC/PAUSE/
C/B/MPX/TIMER REC/TIMER PLAY)
Power eject motor close control singnal
(“H”...CLOSE, “L”...OPEN/STOP)
Capstan motor ON/OFF control signal
(“H"...OFF (POWER OFF or ABNORMAL
CONDITION), “L”...ON)
3
| >
a] =
Trigger solenoid ON/OFF control signal
(“H”...OFF, “L”...ON)
an
fe) 4
a
Brake solenoid ON/OFF control signal
(“H"...OFF, “L”...ON)
ND
p] v
g fe) &
Brake solenoid hoid ON/OFF control signal
(“H"...OFF, “L”...ON (FF/REW/MS)
a ie)
fh
re)
as N
Reel pulse signal
Ree! motor reverse control signai
(“H"...REW,
“L”...STOP/PLAY/FF)
Key
SW
input
(MEMORY
REPEAT/MEMORY
STOP/EJECT/MONITORI/CD DIRECT/
OSC/TEST)
Reel motor foward contro! signal
(“H"...PF/PLAY, “L”...STOP/REW)
By = 1
a o
FA
as)
Auto Tape Select SW input
Single
capstan/Dual
capstan
select
signal
(ATSC/ATSM/EJECT
OPEN
LEAF
SW)
(“H"...DUAL CAPSTAN,
“L"_.. SINGLE CAPSTAN)
REC INH SW input
(REC INH/EJECT MOTOR LEAF SW)
Calibration OSC circuit ON/OFF control
signal (“H”...OFF, “L”...ON)
Serial data signal of FL display
(ACTIVE: “H”)
ca aes
ee ees
fie]
me
|
1
|
Reset
signal
(“L”...
RESET)
Not
used
in
this
unit.
Laila
a
ee
Calibration
OSC
circuit
(400Hz/10kHz)
—
select
signal
(“H”
...
HIGH
FREQ.
(10kHz),
“L” LOW FREQ. (400 Hz)
3
i
Remote
control
serial
data
20
|
Por
|
1
|
peed
bad
Saceceri
(“L”
for
50ms.
with
counter
“0000”)
a
Clock OSC terminal (6 MHz)
Music select det. signal
(“H"...NO SIGNAL, “L"...ON SIGNAL)
Memory Pulse signal
Not used in this unit.