Technics SU-VX720 - IC Terminal Functions and Block Diagram; Block Diagram - Signal Flow; Block Diagram - Power and Control Systems

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FUNCTIONS
OF
IC
TERMINALS
(IC801:
M37470M2063S)
Pin Terminal
vO}
No. Name | |
+ | P17/SRDY | ne
| | |
2. PISCLK § OO!
i
6 | Pi2TO |
7 Pit |
cele
P22/iN2
P20/INO ES
Function
Connected to GND.
Remote
control
signal
output.
|
Not usec.
Connected to GND.
Level encoder volume control
signal output.
Connected to GND.
| 12
VREF
i
|
Reference
voltage
input.
fee
refer |
rep we
Pep |
Connected to ceramic oscillator.
GND terminal.
Power supply (+5 V).
SU-VX720
| fee| tema | vo | roto
Name
18 RESET Re Reset signal input.
P30/INTO | Back-up detector signal input.
| Remote contro! receiving signal
P31/INTI ;
input.
21 | P32/CNTRO a POWER switch input.
22
P33/CNTRI SELECTOR MODE switch input.
of me [—
|
P41
Connected to GND.
|
0
|
SELECTOR
LED
(TUNER)
drive.
! SELECTOR LED (TAPE 1) drive.
PO4 O | SELECTOR RELAY 2 output.
jst | poe |
Connected to GND.
—~?7 -
25 POO |
Peer | o enarons eae
28 PO3 O
SU-VX720
m
BLOCK
DIAGRAM
|
CEES
|
UPC4570C
+6
patos
tINPUT
$201
:
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s
ls
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TONE
AMP
|
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BFPO],
|
a
7
>
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|
o
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|
prone
I
stereo
VR201-1
—P
PHONO
(CO
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‘VOLUME
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.
3
‘SUBSONIC
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|
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|
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|
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|
VR301,302
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PHONO
EQ
AMP
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|
a
a
Treble
a
|
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|
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|
(SOURCE
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|
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|
Ts
=
MNI381STA
TUNER
(©
tuner
|
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;
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i—,
|
a
|
s
RESET
SIGNAL
GENERATOR
|
il
|
:
a
—
;
f
{
TAPE:
tape)
:
|
.
|
PLAYUN]
|
QO
be
|
|
;
|
Gd—}
|
|
tape
2
|
2
|
TAPE2/08T
/DAT
|
|
:
PLAYIN}
;
:
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|
Reter
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|
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voltage
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REMOTE
SENSOR
|
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Switching
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2
)
|
|
|
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Grive
$80!
|
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MICRO
COMPUTER(REMOTE)
401
ANTO62N
VOLTAGE
AMP
4
Is
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2
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(4)
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0459,463
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Relay drive | D50in, 503
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0603
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(VOLTAGE CONTROL:
+8