Technics SX-E33 - Page 14

INTRODUCTORY
REMARKS
REGARDING
SCHEMATIC
DIAGRAMS
1. Important safety notice:
Componenis
identified
by
A
mark
have
special
characteristics
for
safety.
When
replacing
any
of
these
components,
use
only
manufacturer’s
specified
parts.
2. Signal lines
weap Sound source signal or Tone signal
===> Control signal
uz Clock signal
3.
Terminal
No.
of
operational
amplifier
in
this
model,
operational
amplifiers
with
different
number
of
terminals
as
shown
below
are
used
together.
Those
mentioned
in
the
circuit
diagram
are
based
upon
the
terminal
No.
of
SVIGM5218L.
Therefore,
when
checking
a
P.C.B.
using
SVIGNJM4558S,
note
that
the
terminal
No.
are
different
from
those
in
the
circuit diagram.
SHAPE
IC
BLOCK
DIAGRAM
PCB
SYMBOL
MARK
M5218L M4558S
OUT 1@ <j © ouT 2 |
ea
O-O-O
c
IN4 IN1 -15 IN2IN2
(-) (+) (+) (-)
SVIGM5218L
Ota)
+15V
4. Symbolic marks
The
smbolic
marks
for
resistors
and
capacitors,
which
are
used
in
the
circuits
for
this
organ,
are
as
follows.
@ Resistors
(1)
Resistors
without
symbolic
mark
are
FIXD
CARBON
FILM
RESISTORS.
(2)
All
resistors
are
1/4
WATT,
5%
TOLERANCE
unless
otherwise
designated
in
the
schematic
diagram.
(3)
Resistors
with
symbolic
mark
are
Flame-Proof
resistors.
(4)
All
resistors
are
in
OHMS
(2)
K=
10002,
M=
1000k2.
@ Capacitors
(1)
Capacitors
without
symbolic
mark
are
Polyester
Film
Capacitors
(ECQM—type).
(2)
Polarized
capacitors
without
symbolic
mark
are
Aluminum
Electrolytic
Capacitors.
(ECEA—type).
(3) Others
CP : TF capacitor (ECQV—type).
@
:
Aluminum
Electrolytic
Capacitor,
@
series
Low
impedance
type
(ECEA—Z—type).
US
:
Aluminum
Electrolytic
Capacitor,
MS)
series
Low
leakage
current
type
(ECEA—M_—type).
®)
:
Bi-Polarized
Electrolytic
Capacitor
(ECEA—N—type),
(ECEA—Y—type).
O : Ceramic Capacitor (ECC—type), (ECK—type).
(4)
All
capacitors
are
microfarads
unless
otherwise
specified
in
the
schematic
diagram.
I-15