Panasonic RS-612US-D - Schematic Diagram; Circuitry Overview

SCHEMATIC DIAGRAM MODEL RS-612US-D
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RUIZ
10
1.
$1-1~S1-7,
$2-1~S$2-
Record/playback
select
switch
(shown
in
playback
position).
f
C105
1.2K
|
|
2.
$3-1,$3-2
Input
select
switch
(shown
in
MIC
position).
2
5
13.0V
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7
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1.2K
RUS
|
|
3.
$4-1,$4.2
Muting
switch.
ERASE
><
012
35
F
R104:
R105
3.9K
4
|
|
4.
-
Dolby
IN/OUT
select
switch
(shown
in
OUT
position).
HEAD
-
33K
100
|
cio
ci02
+
M
|
5
Bias
HIGH/LOW
select
switch
(shown
in
LOW
position).
C106
1ova7ss_
|
10v47
:
|
6.
Equalizer
704S/120uS
select
switch
(shown
in
1201S
position).
|
|
|
7
Motor
ON/OFF
select
switch.
a
C108:
+
|
|
8.
AC
power
ON/OFF
select
switch.
Tr
50V1
‘Beoioo
eu
s
|
|
9.
Record
input
level
control.
|
are
25¥100
l
10.
Playback
level
adjustment
VR.
L
ll
Record
level
adjustment
VR.
Be
rrr—“‘“_—O—s—sSOi
ss—~—~sia‘_S—s
ee
=
12.
-
Record
bias
adjustment
VR.
|
TH2
2SC1384(R)
Trl
2SA564(R)
Tr9,10
2SC828(R)
Tr13_
28C1384(R)
I
TERMINATIONS
(BOTTOM
VIEW)
13.
Resistor
values
are
in
ohms
(2),
1/4
watt
unless
specified
otherwise.
_J
K=1,0000.
L
aaa
ee
a
ee
ee
EEE
OOOO
Sf
Sse
ee
ee
Se
=a
2801327,
280828
14,
Capacitor
values
are
in
microfarads
(uF)
unless
specified
otherwise.
2801318,
2SA564
11,2
u7
P
=Pico-farads.
2SC1384
15.
The
mark
(W)
shows
test
point.
e.g.
¥
=Test
point
1.
16.
All
voltage
values
shown
in
circuitry
are
under
no
signal
condition
with
volume
control
at
[o«
50]
a0
Ee
minimum
position.
For measurement,
use
VTVM.
20
05
The
upper
values
should
be
measured
during
playback
and
the
lower
values
during
recording.
17.
For
parts
which
are
shaded
(#882),
only
parts
specified
by
the
manufacturer
should
be
used
10
O4
for
replacement
in
critical
circuit.
01
02
03
E