Bogen Tpu-15a User manual

BOGEN

COMMUNICATIONS,

INC.

TELEPHONE

PAGING

AMPLIFIER

TPU-15A

CAUTION

Connect

only

to

POX

system

incot

punning

isulutiun

from

telecom

network.

ATTENTION

Raccorder

settlement

u

un

systeme

PBX

indeperuiam

du

reseau

de

telecommunication.

DESCRIPTION

Bogen

Model

TPU-15A

is

a

unique

fifteen-watt,

wall-mounted

amplifier,

specifically

designed

for

telephone

paging

applications.

This

compact

unit

incorporates

state-of-the-art

electronic

technology,

including

voice-activated

muting

of

music

when

paging.

The

page

channel

features

automatic

output

leveling

(ALC)

as

channel

input

varies,

which

is

particularly

advantageous

where

persons

of

varying

voice

levels

and

paging

techniques

have

access

to

the

system.

A

night

ringer

(tone

generator)

is

provided;

a

steady

ringing

tone,

indicating

incoming

calls,

can

be

transmitted

through

the

public

address

system

during

other

than

regular

business

hours.

This

alerts

security

per¬

sonnel

to

answer

the

call.

Input

terminals

are

furnished

for

a

600-ohm

balanced

telephone

line,

a

background

music

source

and

normally-open

dry

contacts

for

the

night

ringer.

Output

terminals

offer

a

choice

of

25

volts,

70

volts,

or

8

ohms

for

connection

of

various

types

of

loudspeakers.

Model

TPU-15A

features

screwdriver-adjustable

controls

for

page,

music,

and

night

ringer

level,

plus

amplifier

tone.

Protective

devices

include

an

LED

overload

indicator

and

a

low-cut

switch

for

use

with

horn

loudspeakers.

The

unit

is

professional

in

styling

and

is

finished

in

black

with

white

lettering.

It

operates

from

a

120VAC,

60Hz

source.

INSTALLATION

CAUTION

The

fallowing

installation

instructions

are

far

use

hy

qualified

service

personnel

only.

To

avoid

an

electric

shock

hazard,

do

not

perform

any

functions

requiring

the

removal

of

the

cover

of

the

amplifier

unless

you

are

qualified

to

do

so.

To

prevent

fire

nr

shock

hazard,

da

not

expose

this

unit

to

rain

or

excessive

moisture.

UNPACKING

Your

unit

was

carefully

checked

before

leaving

the

factory;

inspect

the

shipping

container

and

unit

closely

for

improper

handling.

If

the

unit

has

been

damaged,

make

an

immediate

claim

to

the

distributor

from

whom

it

was

purchased.

If

the

unit

was

shipped

directly

to

you,

save

all

shipping

ma'terial,

notify

the

carrier

immediately

and

place

your

claim.

POWER

AND

GROUNDING

The

AC

line

cord

has

a

three-prong

plug

which

should

be

plugged

into

a

three-wire,

grounded

120V,

60Hz

outlet.

It

is

important

to

ground

the

unit.

If

a

three-wire

outlet

is

not

available,

use

an

adap¬

tor

and

connect

the

grounding

pigtail

to

the

screw

securing

the

wall

plate.

If

the

wall

plate

screw

is

not

grounded,

connect

a

wire

from

the

ground

terminal

of

the

amplifier

to

a

suitable

earth

ground.

MOUNTING

Model

TPU-15A

is

designed

for

surface

wall

mounting.

When

mounting

the

unit,

consider

the

proximity

to

heat

sources

and

power

supply,

adequate

air

flow

for

chassis

heat

dissipation,

and

access

to

controls

and

terminal

wiring,

Where

possible,

secure

to

wall

studs

or

a

suitable

back

brace.

Use

self-fastening

or

molly-type

hardware

on

plasterboard

and

other

thin

materials.

INPUT

CONNECTIONS

PAGING

A

balanced

transformer-isolated

input

for

a

telephone

line

is

pro¬

vided.

One

600-ohm

telephone

line

may

be

connected

at

the

terminals

marked

TIP

and

RING

If

tuo-conductor

shielded

wire

is

used,

con¬

nect

the

shield

to

the

GND

terminal.

MUSIC

An

unbalanced

high-impedance

auxiliary

input

is

provided.

Make

connections

to

terminals

marked

MUSIC

and

GND.

NIGHT

RINGER

A

ringing

tone

can

be

transmitted

through

the

public

address

system

by

connecting

the

NIGHT

RINGER

and

GND

terminals

on

the

TPU

15A

amplifier

through

a

pair

of

normally

open

dry

contacts

(which

are

customer-supplied).

A

steady

ringing

tone

will

be

heard

as

long

as

the

dry

contacts

are

closed.

Printed

in

Korea

8801

54-5876-02

Pated

Power

Output:

Distortion*

Frequency

Response:

Sensitivity*

Inputs:

Outputs:

Signal

to

Noise

(“A”

weighted):

Controls

and

Indicators:

Tone

Control:

Low

Cut:

ALC

(Page

Channel):

Power

Consumption

(120VAC,

60Hz):

TECHNICAL

SPECIFICATIONS

15

watts

RMS

Loss

than

2%

Music—lOWz

to

12kHz

±2dB

Paging

—shaped

for

maximum

intelligibility

Music

—70mV

Paging

-20dBm,

600

ohms

Music—

Hi-Z

AUX,

25k

ohms,

unbalanced

Paging

—600

ohms

balanced,

transformer-isolated

Night

Ringer—

steady

tone

while

dry

contacts*

are

closed

15

watts

@

8

ohms;

25V

and

70V

balanced,

transformer-coupled

-70dB

Screwdriver-adjustable—PAGE

VOLume,

MUSIC

VOLume,

NIGHT

RINGER

VOLume,

and

TONE;

LO-CUT

switch

(for

horn

protection);

PEAK

LEVEL-indicating

LED

(ON

when

peak

output

exceeds

rated

output),

CIRCUIT

BREAKER

-3dB

@

2.5kHz;

6dB

per

octave

-3dB

@

350Hz;

6dB

per

octave

+1,

—3dB

output

level

change

with

15dB

input

level

change

(ref.

—20dBm

rated

input

sensitivity)

.4A,

48W

•Customer-supplied

All

specifications

subject

to

change

without

notice.

OUTPUT

CONNECTIONS

SPEAKERS

The

unit

provides

8-ohm,

25V

and

70V

transformer-coupled

out¬

puts,

balanced

or

unbalanced.

Connect

the

system

speaker

to

the

out¬

put

terminals,

with

one

lead

to

the

COM

terminal

and

the

other

to

the

iciinitial

which

corresponds

to

the

impedance

or

tne

speaker

system.

OPERATION

POWER

Once

connection

has

been

made

to

a

120VAC,

60Hz

power

source,

the

TPU-13A

will

remain

m

a

power

standpy

condition.

(See

CIRCUIT

BREAKER

information,

also.)

CONTROLS

PAGING

The

PAGE

VOLume

screwdriver-adjustable

control

is

used

to

adjust

the

volume

ot

the

page

input.

Rotate

the

control

clockwise

to

increase

volume

and

counterclockwise

to

decrease

it.

Set

the

control

to

minimum

if

the

input

is

not

used.

MUSIC

The

MUSIC

VOLume

screwdriver-adjustable

control

is

used

to

ad¬

just

the

volume

of

the

background

music

input.

Rotate

the

cunliul

clockwise

to

increase

volume

and

counterclockwise

to

decrease

it.

If

the

input

is

not

used,

set

the

control

to

minimum.

NIGHT

RINGER

CONTROL

The

NIGHT

RINGER

VOLume

is

screwdriver-adjustable

through

the

top

of

the

unit.

Rotate.

th<»

rnntml

I'lnrliuicp

to

increase

volume

and

counterclockwise

to

decrease

it.

TONE

CONTROL

The

TONE

screwdriver-adjustable

control

is

used

to

adjust

the

tonal

value

of

the

amplifier

output.

Rotate

the

control

fully

clockwise

to

provide

a

nominal,

flat

high-frequency

response

and

counterclock¬

wise

to

decrease

it.

2

H

5

Z

3

Figure

1—Schematic

Diagram,

Model

TPU-15A

LO-CUT

SWITCH

The

LO-CUT

filter

is

used

to

decrease

low-frequency

response

when

hom-type

paging

speakers

are

used.

Move

the

switch

to

the

nght

(toward

the

marking)

to

enable

this

feature.

PEAK

LEVEL

INDICATOR

A

front-panel

LED

will

illuminate

when

the

amplifier

is

driven

into

clipping.

Adjust

the

output

level

of

the

PAGE,

MUSIC,

and/or

NIGHT

RINGER

if

the

LED

remains

ON.

CIRCUIT

BREAKER

If

the

circuit

breaker

opens,

the

amplifier

output

will

cease.

Discon¬

nect

the

plug

from

the

outlet

and

momentarily

depress

the

red

circuit

breaker

reset

button.

Reapply

power;

if

the

breaker

trips

again,

do

lot

attempt

to

reset

it.

Have

the

unit

checked

by

a

qualified

technician.

MAINTENANCE

CAUTION

There

are

no

user-replaceable

parts

within

the

unit.

To

avoid

an

electric

shock

hazard,

have

all

internal

ser¬

vicing

done

by

a

qualified

technician.

The

warranty

will

become

void

if

repairs

are

made

by

other

than

the

Bogen

Service

Department

or

an

authorized

service

agency.

BOGEN

SERVICE

We

are

interested

in

the

maintenance

of

your

Bogen

equipment.

In

the

event

of

any

difficulty,

do

not

hesitate

to

ask

our

advice

or

assistance.

Information

may

be

obtained

by

writing

to

Service

Depart¬

ment,

Bogen

Communications,

Inc.,

P.O.

Box

575,

Ramsey,

NJ

07446.

When

communicating

with

us,

give

the

model

and

series

designa¬

tion

of

your

unit,

describe

the

difficulty

and

include

details

of

the

electrical

connections

to

associated

equipment.

We

will

send

you

information

if

the

remedy

appears

simple.

If

service

is

required,

we

will

send

you

the

name

and

address

of

the

nearest

authorized

Bogen

Service

Agency.

When

shipping

your

unit,

pack

it

well,

using

the

original

shipping

carton

or

a

similar

container

and

filler

material

to

prevent

damage

in

transit.

Send

the

unit,

fully

insured

and

prepaid,

via

UPS

or

any

responsible

carrier.

It

will

be

promptly

repaired

and

returned

to

you

collect

Cor

prepaid

while

in

warranty).

REPLACING

COMPONENTS

CAUTION

Improper

soldering

may

damage

components

or

the

printed

circuit

hnnrd

Such

dnmnge

c/m

void

the

warranty.

Many

semiconductor

components

are

soldered

in

place

to

ensure

maximum

reliability.

When

soldering

transistors

or

diodes,

use

a

heat

sink

(such

as

a

small

alligator

clip)

between

the

component

and

the

source

of

heat.

Unless

you

are

experienced

in

the

removal

of

IC

com¬

ponents,

do

not

attempt

to

remove

them,

since

excessive

heat

can

damage

an

IC

and/or

the

printed

circuit

board.

If

you

are

certain

that

an

IC

is

defective,

the

easiest

method

of

removal

is

to

cut

the

leads

off

close

to

the

component

and

desolder

the

leads

individually.

If

you

are

not

certain

an

IC

is

defective,

the

use

of

a

low-wattage,

vacuum-

type

desoldering

tool

(such

as

Ungar

Type

7800)

is

advised.

REPLACEMENT

PARTS

Most

components

are

standard

parts

available

through

reputable

parts

suppliers.

The

parts

listed

herein

may

be

obtained

from

the

fac¬

tory.

When

ordering

a

part,

specify

the

part

number

as

listed,

the

model

number

of

the

unit,

and

give

the

series

designation,

which

is

a

letter

followed

by

numbers,

printed

on

the

chassis.

For

parts

on

the

circuit

boards,

also

give

the

component

board

assembly

number,

which

begins

with

“45.”

Schem.

Ref.

fort

No.

Description

Component

Boards

-

45-7288-05

Component

Board

Assembly

(Main

Board)

C2,4,9,11,

17,23

79-126-055

Cap.,

Elect.,

4.7/tF,

50V

CIO

79-126-057

Cap.,

Elect.,

47,tF,

50V

C14

79-126-053

Cap.,

Elect.,

100/tF,

35V

C18

79-119-015

Cap..

Elect..

3300

mF.

63V

C19

79-126-044

Cap.,

Elect.,

IOOO/aF,

35V

CR1

96-5691-01

Diode,

Zener,

4.7V,

IN5230A

CR2,4,5

96-5430-01

Diode,

IN4148

CR3

96-5344-08

Diode.

Zener.

30V

CR6-9

96-5333-01

Diode,

400prv

@

1A

CR10.11

96-5684-02

Diode,

Zener,

2.2V,

IN4680A

CR12

96-5692-01

Suppressor,

Transient,

SCM16C

IC1

96-5690-01

IC,

LM833N

IC2

96-5649-01

IC,

LM1875T

LED1

96-5576-01

LED,

Red

Ql-3

96-5641-01

Transistor,

MPS4123

R1.13

77-001-843

Control.

500

kilohrm.

Audio

R3

77-001-817

Control,

10

kilohms,

Audio

R9

77-007-002

Trimpot,

4700

ohms

R21

76-146-109

Resistor,

1

ohm,

1/4

watt,

5%

SWI

81-003-067

Switch,

Slide

T1

83-060-000

Transformer,

Input

—

45-7351-05

Component

Board

Assembly

(Night

Ringer)

C4

79-126-069

Cap.,

Elect.,

IpF,

50V

IC1

96-5667-01

IC,

f*A78L10

IC2

96-5729-01

IC,

KA2418

R4

77-015-001

Trimpot,

100

ohme

Chassis

CB101

94-0025-03

Circuit

Breaker,

0.63A

T101

83-837-000

Transformer,

Power

T102

83-496-000

Transformer,

Output

BOGEN

50

SPRING

STREET.

P

0.

Bo*

575

RAMSEY.

NJ

07446

(201)

934-8500

Bogen TPU-15A User manual

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