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Scully 280B Series User Manual

Scully 280B Series
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6-2
Model
280B
Theory
of
Operation
SQUELCH
r--------
- - - ,
I
REC
LIGHT
I
~----------
--'
LOGIC
REC
STATUS
+25V~~
--~
~
.----
--
~
--
~
+2 5 V
'-
___
+_
-----,
PL
AY
BACK
r
~
.::>R,----.,6__o
,
7
-
+---1
f__
_j
HEAD
~
5 '
POWER
SUPPLY
-
40
V
'--r---'
UN
REG
117
VAC
.i
SYNC:
+25V
-25V
REL
PLAY
3
EQ
2
tJll
LINE
IN
'----
......
--1'
+25V
PLAY
0
C
AL
~
ER
IlLUM
+-25V
BIAS
ADUST
SQU
ELCH F
UN
C
TI
ON
TIMING C
IR
CU
IT
FRONT
PANEL
AGC
t
2009328
Figure 6-1.
System
Block Diagram

Table of Contents

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Scully 280B Series Specifications

General IconGeneral
BrandScully
Model280B Series
CategoryTurntable
LanguageEnglish