Electronic Secretary DCR-1 Manual de usuario

I

MANUAL

FO

R

CkcDz.an.ic

Model

DCR-1

ISSUE

E

JULY

1957

DESC

RIPTION

INSTALLATION,

CO

NNECTION

AND

MAINTENANCE

I

NFO

RMATION

ELECTRONIC

SECRETARY

INDUSTRIES INC. 1101 So.

Prairie

Ave.

•

Waukesha,

Wisconsin

TCI Library www.telephonecollectors.info

Table

of

Contents

ELECTRONIC

SECRETARY

Model

DCR-1

ENGINEERING

SERVICE

MANUAL

Section

CD

@

©

®

@

CV

@

®

DESCRIPTION, INSTALLATION AND CONNECTIONS

GENERAL OPERATING

PRINCIPLES

WITH 8

SCHE-

MATIC DRAWINGS

DESCRIPTION

OF

BASIC COMPONENTS

GENERAL MAINTENANCE PROCEDURE

SUMMARY

OF

MAINTENANCE CALLS

AND

SUG-

GESTED MEASURES

FOR

HANDLING

TABLE

OF

VOLTAGE READINGS

ADJUSTMENT

OF

RECORD

PLAYER

MECHANISM

ADJUSTMENT

OF

WIRE RECORDER MECHANISM

PARTS LIST

TCI Library www.telephonecollectors.info

DESCRIPTION,

INSTALLATION

AND

CONNECTIONS

1. DESCRIPTION

The model DCR-1

Electronic

Secretary

is

a machine

used

to

furnish

automatic telephone

answering

and

recording

service

on

central

office and PBX

lines.

It

can be

used

on individual

lines

and 2 and

4-party

selective

lines,

and

is

the equivalent of 1

ringing

bridge.

The machine

is

arranged

to

respond

to

an incoming

call

with an announcement

message,

followed by a tone

signal,

a

period

for

recording

a

message

and then a "ThankYou"

or

sign-

off

message.

The

maximum

total

time

for

each

call

is

approxi-

mately

3

minutes,

which

can

be

divided into any length of

an-

nouncement

plus

recorded

message

plus

sign-off

message.

The

machine

consists,

basically,

of a modified

record

player,

a

wire

recorder

and an

amplifier

and loud

speaker.

A

vinylite

record,

containing a

standard

message,

is

normally

supplied.

Records

containing a

specific

announcement,

recording

period

and

sign-off

messages

may

be

obtained.

This

record

is

the

timer

for

the

entire

operation.

The

wire

recorder,

which

starts

immediately

following the tone

signal,

will

accept

messages

up to a

total

of about60 minutes,

after

which the machine will not

respond

to incoming

calls.

The

automatic

restoral

of the

record

player

arm,

after

completion of the

sign-off

message,

electrically

resets

the machine,

releasing

the

line

for

the

next incoming

call.

2. TRANSPORTING

The

machine should

be

handled

carefully

at

all

times

to

avoid damage.

Before

transporting

the

machine

always:

(a)

Secure

the

record

player

tone

arm

by tying

it

to

its

bracket

with

lacing

cord.

(b)

Remove the vinylite

record.

(c)

After

rewinding

the

wire

to the

small

spool, which

may

require

operating

the

"Automatic Stop

Reset"

button,

remove

the

large

and

small

wire

spools.

3. POWER SUPPLY

The

machine

is

designed

to

operate

on 115-volt,

60-cycle,

a-c

power

supply.

In

no

case

should the machine

be

direct-

ly

connected to

direct

current.

If

only

d-c

current

is

available,

ref

er

the

matter

through

regular

organization

channels

to

the

Engineering

Department

for

advice

before

proceeding

with

the

installation.

Section

CD

3

TCI Library www.telephonecollectors.info

4

The

machine

is

protected

by a 312-3AG -

3amp

Littel

fuse

which

is

located

adjacent

to

the

power

cord

on the

back

of

the

case.

4. LOCATING

Locate

the

machine

in

accordance

with

the

considerations

outlined below.

If

the

customer's

wishes

cannot

be

followed,

explain the

reason

therefor.

(a)

The

machine

may

be

located

within

easy

reach

of

the

subscriber's

telephone

set,

but

this

is

not

essential.

(b) A

desk

or

table

sufficiently

strong

and

stable

(approxi-

mate

weight of

machine

is

55

lbs.)

and

where

ventila-

tion

is

not

restricted

is

a

satisfactory

location.

(c)

The

machine

is

arranged

for

desk

or

table

installation

and need not

be

fastened.

(d) Avoid

locations

that

subject

the

apparatus

to

excessive

moisture,

heat

or

vibration.

(e)

The

machine

is

equipped with a

8'

power

cord

and

plug

for

connection

to

a

standard

power

supply outlet.

5. INSTALLATION

Do not connect the

machine

to

the

power

supply

until

all

of

the

installation

work

described

below

is

completed.

Use

suitable

protection

to

avoid

marring

desk,

tables,

etc.

Prepare

a

suitable

cable

with 3

insulated

wires,

preferably

of

red,

green

and yellow

colored

insulation.

Fasten

the

cable

to

the

terminal

block of

the

Electronic

Secretary,

connecting

the

red

wire

to

L-1,

the

green

wire

to

L-2

and

the

yellow

wire

to

ground.

Connect the

opposite

end

of the

cable

to

the

telephone

block

as

indicated

under

"6.

Connections"for

the

type of

service

desired.

Release

the

record

player

tone

arm

and

remove

the

card-

board

cylinder,

or

in

some

cases

the

metal

guard,

from

the

out-

side

of

the

cartridge.

Do not

place

the tone

arm

on the tone

arm

rest.

Place

the outgoing

message

record

on

the

record

player

turntable.

Plug

power

cord

into

115-v.,

60-cycle

a-c

power

supply.

6. CONNECTIONS

Connecting

Cord

to

Line

Type

of

Service

Red

Green

Yellow

*Individual,

PBX

and

other

Bridged-Ringer

Service

Ring Tip Tip

2 Party

Selective

Ring Party Tip Ring

:::

}

%{}

Tip Party Ring Tip

*On

PBX

trunks or Key

equipment

connect

the

machine

ahead

of

any

con-

trol

equipment.

** Remove

strap

between

terminals

Land

G

at

answering

set.

TCI Library www.telephonecollectors.info

The

telephone set connections are not affected

by

the Electronic Secretary

which

is

bridged

on

the Iine.

7. FINAL TESTS

Upon

completion

of

the

installation,

make

certain

that

all

features

of the machine function

properly

by making the

following

tests:

(a)

Recheck

the

associated

telephone

set

to

assure

its

normal

operation.

(b) On the

front

of the machine,

1.

Center

the

"Recorded

Time

Indicator"

at

left

side

of

screen

to

0-0

by

turning

the

smaller

center

"Sec-

onds"

knob

counter

clockwise.

2.

Place

the toggle

switch

on

the

control

panel

to

the

center,

or

"Automatic"

position.

3.

Turn

the

"ON-OFF"

volume

control

switch

in

a

clockwise

direction

until the neon

indicator

glows.

4. Should the neon

indicator

fail

to

glow, check:

a - The

fuse

on the

back

of

the

case.

b - The

"Recorded

Time-Indicator"

is

at

0.

O.

c - At the

right

rear

of

the machine

is

the Safety

Timer

switch

under

a

1/2

inch

round

blank

button.

If

necessary,

remove

this

button with a

screw

driver

and

depress

the

Reset

button with

a

small

insulated

rod

or

wood

stick.

This

Safety

Timer

switch

will

operate

in

the

event

that

some

malfunction of the machine

permits

a

message

cycle

to

exceed

3

minutes.

(c)

Place

a

spool

of

recording

wire

on the

small

spindle

of

the

wire

recorder.

Pull

out the

plastic

leader,

lead

it

past

the

recording

head and

wrap

it

around

thechanneled

groove

in

the

large

take-up

drum.

Make

certain

that

the

wire

is

in

the

groove

of the

recording

head and

that

the

reset

button on

the

top of the

wire

recorder

is

de-

pressed.

Move the toggle

switch

to

"Play"

position and

run

wire

onto

take-up

reel

until the

"Elapsed

Time

Indicator"

shows about one and one half minute. Repo-

sition

"Elapsed

Time

Indicator"

manually

to

"0-0".

This

will

insure

against

the

plastic

leader

being pulled

out and the

small

reset

switch

being

unnecessarily

op-

erated

each

time

the

wire

is

rewound,

as

the automatic

stop

switch

will open

the

electrical

circuit

when the

in-

dicator

returns

beyond

0-0

to

approximately

59

minutes.

1.

To

re-establish

normal

operation

after

this

switch

has

been

operated,

move toggle

switch

to

"Play"

and

press

the"Automatic Stop

Reset"

button,

at

the

lower

left

side

of

the

time

indicator

dial, until the

elapsed

time

indicator

shows

0-0.

2. When the

recorder

receives

messages

beyond

59

minutes

the

same

limiting

switches

operate.

To

permit

rewinding, move toggle

switch

to "Rewind"

5

TCI Library www.telephonecollectors.info

6

and

press

the automatic stop

reset

button until the

elapsed

time

indicator

shows

58

minutes.

(d)

Call the

test

desk

and

request

the deskman to make a

test

call

tochecktheannouncementand

leave

a

message.

(e) Move the toggle switch to the left,

or

"Rewind" position.

The

indicator

will

start

forward

and then, within a

sec-

ond

or

two,

reverse.

Leave the switch in the "Rewind"

position until the

indicator

returns

to

"0•0".

(f) Move the toggle switch to the

extreme

right

or

"Play-

back" position,

operate

Automatic Stop

Reset

button,

and advance the"Volume"

control

to check

for

record-

ing of

received

message

and

for

sufficient playback

volume.

(g)

Erase

the

test

message

by rewinding

the

wire

with the

erase

button

depressed

until the elapsed

time

indicator

shows

0-0.

(h)

The machine

is

now

in

the

correct

position

for

the

sub-

scriber's

use. Whenthe

service

is

not

desired

turn

the

"Volume"

control

to

"Off"

and neon

lamp

will

cease

to

glow.

TCI Library www.telephonecollectors.info

Section

GENERAL

OPERATING

PRINCIPLES

What It

Is

Basic

Timing

Start

and

Stop

MU

Switches

On

Record

Player

What

Is

Re-

quired

To

Start

A Cycle

Of

Automatic

Operation

How

The

Tele-

phone Ring

Starts

The

Re-

cord

Player

Motor -

Trig-

ger

Action

Relay

Contacts

Involved: 3b

The

Electronic

Secretary

is

an

automatic

telephone

an-

swering

machine,

consisting

of

several

electronic

amplifiers

whose

operating

periods

are

governed

by

simple

electrical-

mechanical

sequence

switching. The

harmonious

co-functioning

of

these

basically

different

systems

provide

a

simple,

yet

com-

pletely

satisfactory

method of telephone

answering,

requiring

a

minimum

amount of

adjustment

from

one

operating

condition

to

another.

Basically

the

timing

device

used

in

Electronic

Secretaries

to

control

the

activity

sequence

of

the

various

amplifiers

is

the

outgoing

message

disc

or

record;

and

the

record

player

associated

with

it

provides

the

mechanical

power

for

the

basic

switching

actions.

The

record

player

has

attached

to

its

repeated

mechanism

a

pair

of

very

low

operating

pressure

switches,

which

close

as

the

tone

arm

lowers

itself

to

the

record

to

begin

a

cycle

and

opens

as

the tone

arm

travels

through

the

throw-out

grooves

and

resets

itself,

to

end

a

cycle.

We

see

therefore

that

the

basic

time-switching

operation

of

starting

and

stopping

the

machine

is

performed

by two

simple

switches

attached

to

the

record

player;

the

duration

of the

operating

cycle

is

determined

by

the

length of

time

to

which

the

record

is

cut.

From

the above

observation

we

learn

that

all

that

is

re-

quired

to

place

the

machine

into

operation

would be to apply

cur-

rent,

when the telephone

rings,

to

the

record

player

motor,

for

a

period

long enough

for

it

to

close

its

own

switches,

which

as

we

learned

in the

preceding

paragraph,

close

when the tone

arm

sets

down upon

the

record.

This

current

of

course

will

be

cut

off when the tone

arm

resets

to end the

operating

cycle.

To

comprehend

fully how

the

telephone

ring

automatically

starts

the

record

player,

we

can

refer

to

schematic

diagrams

S1

and S2.

You

will

note

that

diagram

S2

is

merely

a

part

of

dia-

gram

S1,

whichhas

been

literally

lifted

out of

the

complete

sche-

matic

to

show

and

isolate

the

triggering

action.

Looking

at

S2

closely,

we

see

that

one

side

of the telephone

terminal

block

is

connected

through

a 2

microfarad

condenser

to a

selenium

bridge

rectifier,

and

the

other

side

of the telephone

line

is

connected

through

the

normally

closed

contacts

3b,

through

a 100 ohm

fusing

resistor

to

the

other

input point of

the

selenium

bridge.

The output of

the

bridge

rectifier

feeds

a 2500 ohm

D.

C.

relay

thru

a

metering

jack.

It

is

this

relay,

R1

whose

contacts

apply

current

to

the

record

player

motor

whenever

the

relay

is

ener-

gized

by

the

rectified

ringing

current

of the telephone.

7

TCI Library www.telephonecollectors.info

8

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right

facing

terminal

board

of

relay.

"A"

contacts

to the

left

and

"B"

contacts

to the

right.

TCI Library www.telephonecollectors.info

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ELECTRONIC

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Model

DCR-1

Complete Schematic

Drawing

51

-ERASE

SWITCH-

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RECORDER

MOTOR

SOCKET-

IMPORTANT

Relay

9

has

been

removed

from

this

model.

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for

schematic

drawing

with

Relay

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and

description.

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WIRING DIAGRAM

9

TCI Library www.telephonecollectors.info

Electronic Secretary DCR-1 Manual de usuario

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