Sony PS-212A - Section 4 Diagrams (continued); Schematic Diagram

PS-212A PS-212A
b
4-2.
SCHEMATIC
DIAGRAM
f
(PITCH
BOARD}
=
4
8
i
Vp-p
ae
S2
Ss
4
i
Ov
|
i
A
m'33
RV?
t
i
J
1:45
=
20k
|
See
ee
=
=
|
ICI
pPC4558C
Q1
2SC945/02
eae
ie
Q34
2SC945
Lom
R14
1K
=
=Q5
2SA733/
ICI-2
pPC4558C
:
BUFFER
AMP
|
SAWTOOTH
COMPARATOR
:
BUFFER
AMP
i
o2VE-P
rea
GENERATOR
68K
¢
|
110K
oe
ary
ERI
15K
Dee
AN
.
|
YP
,
|
t
[MOTOR
BOARD]
~~
MGH
.
re
TMD~24
H1,2
5GF-MS-O7F
&
|
x9,
|
:
SPEED
DET
.
HEAD
AF ATTENUATOR
osc
284Hz
ee
%
oF
RO
Note:
e
All
capacitors
are
in
wF
unless
otherwise
noted.
pF:
uur
50WV
or
less
are
not
indicated
except
for
electrolytics.
e@ All resistors are in ohms, %W unless otherwise noted.
kQ: 10002; MQ: 1000 kQ
e All variable and adjustable resistors have characteristic
curve B, unless otherwise noted. |
e———-: B+ bus.
ssaturnestaeosea ane
;
4
¢
e[__]: panel designation.
|
e(___]:
adjustment
for
repair.
|
o———:
B-
bus.
|
OV
®
Readings
are
taken
under
no-signal
conditions
with
a
:
VOM
(20
kQ/V).
|
(
):
45
rpm
'
no
mark:
33
rom
'
e@
Switch
|
Switch
Position
06,8 2SD571 *! POWER
i
Q6,8
2SD414%2
H
MOTOR
DRIVE
ate
:
07.9
2886053
VOLTAGE
SELECTOR
05 EQA O1-08R IC 2, pPC4558C “IV 979 280548%4
VOLTAGE
j
REGULATOR
___
ORIVE
AMP
MOTOR
DRIVE
:
%* 1: E model
4
2:
AEP,
UK
model
{
*
3:
E
model
:
*
4:
AEP,
UK
model
i
¥
20v
220V
240v
i
@
SHOWS
THE
DIRECTION
i
OF
THE
ARROW
SHOWN
Same
ON
THE
SELECTOR
KNOB
:
ss :
%
J
el?
Note:
The
components
identified
by
shading
and
mark
Note:
Les
composants
identifiés
par
un
tramé
et
une
A
are
critical
for
safety.
Replace
only
with
marque
A\
sont
critiques
pour
la
sécurité.
Ne
les
remplacer
que
par
une
piéce
portant
le
numéro
:
iH
i
part number specified.
—15—
rs
:
spécifié.
7
f
ate