Wurlitzer 3020 - General Description; Cycle of Operation for Wireless Wallbox; Introductory; Cycle of Coin Registration

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Service

Instructions

Section I

General

Description

S E R

VI

C

E~

I-NSTRUCTIONS

SECTION

I

GENERAL

DESCRIPTION

CYCLE

OF OPERATION FOR

WIRELESS

WALLBOX

INTRODUCTORY

The

Wurlitzer

Wireless

Remote

Control

System

provides

for

transmission

of

pulses

over

60 cycle

wir·

ing

circuits

from

wallboxes

to

the

phonograph.

The

source

of

the

signals

is a

transmitter

in

the

wallbox

which

sends

out

radio

frequency

pulses.

The

device

which

responds

to

these

signals

or

pulses is

the

radio

impulse

receiver, located

in

the

phonograph.

The

receiver actuates

the

stepper,

which

in

turn

sets

up

the

circuit

required

for

obtaining

the

desired

se-

lection

on

the

phonograph.

Generally,

external

wiring

is

not

required

with

the

Wireless

Remote

Control

System; wallbo:ices

are

sim-

ply

plugged

into

the

elec·

the

coin

relay closes

the

motor

is

started

through

con-

tacts 3

and

4,

the

register

circuit

is

completed

.through

contacts

7

and

8

and

the

selector

circuit

is isolated

through

contacts 5

and

6.

When

the

coin

relay is

energized,

contacts 5

and

6

break

the

selection

ci~cuit

while

the

coins

are

being

registered.

·

The

coins

are

held

on

the

coin

switch

by

the

coin

gate,

as

the

coin

disc

contact

rotates

in

a

clockwise

direction

from

the

at

rest

position

.

The

coin

swi

tch

,

which

is

still

closed, is

disconnected

from

the

coin

relay

circuit

(

Segment

A

of

coin

disc)

and

connected

into

the

accumulator

coil

circuit

(

Segment

B

of

coin

tric

wiring

outlets

and

the

receiver

is

plugged

into

the

stepper

in

the

phono·

graph.

TO

SELECTOR

SWITCHES

CYCLE

OF

COIN

REGISTRATION

The

coin

disc

contact

arm

in

its

~

rest

position,

sets

up

a

circuit

for

the

54

or

10¢

or

254

coin

switch

and

the

coin

relay.

When

a

coin

is

inserted

it

passes

through

the

slug

rejector

and

falls

against

the

"

coin

switch.

The

coin

switch

closes, rhus

closing

the

coin

relay. (See

Figures

1,

2

and

3.)

This

relay

interlocks

through

contacts 1

and

2

until

near

the

end

of

the

revolution

when

the

release

switch

opens

it.

When

5¢

COIN SWITCH

COIN

RELAY

TO

SEL

PLATE

TO

117

v.

TO MOTOR

TO

24

" ·

Figure

l-Five

Cent

Coin

Registration

Schematic

•

1

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