Scully 280B Series User Manual

Scully 280B Series

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Electronics

Maintenance

Model

28SB

Weighting

Filter,

ASA

"A"

Curve

Standard

Sl.4-1961

600

±l%-ohm

resistors

8

±l%-ohm,

lOW

or

larger

resistors,

non

inductive

Alignment

tape:

200

nWb/m

Alignment

tape:

2S0

nWb/m

Azimuth

alignment

tape:

7.S

in/s

-

16

kHz

at

2S0

nWb/m

IS

in/s

-

16

kHz

at

2S0

nWb/m

6.7

Preliminary

Procedures

6.8

To

perform

the

following

procedures,

make

the

test

setup

shown

ln

Figure

6-1

and

proceed

as

follows:

a.

Thread

tape

on

machine.

b.

Set

controls

as

follows:

CAPSTAN

speed

selector

switch

to

HIGH

TENSION

switches

to

proper

position

for

reel

sizes

c.

Install

a

600-ohm

load

resistor

across

the

LINE

OUTPUT

plug.

6 .. 9

Power

Supply

6.10

Plug

the

machine

into

a

source

of

power

and

measure

the

voltage

of

the

B+

buss.

It

should

be

+24

±2

volts

dc

on

the

logic

chassis.

If

it

is

not,

adjust

the

power

supply

regulator

output

voltage

adjust

screw,

Figure

6-2.

6.11

Logic

Functions

6.12

Operate

the

machine

in

all

modes

of

operation:

STOP~

PLAY~

EDIT~

FAST

FORWARD~

and

FAST REWIND.

6-2

Table of Contents

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Scully 280B Series Specifications

General

Brand	Scully
Model	280B Series
Category	Turntable
Language	English