Sony DR-6020 User manual

Table of contents

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SONTY.

SERVICE

MANUAL

for

MICROPHONE

HEADSET

SYSTEM

DR-6020

May

1994

SONY

CORPORATION,

7-35

Kitasinagawa

6-Chome,

Sinagawa-ku,

TOKYO,

141

Japan

CHAPTER/

SECTION

List

of

Effective

Pages

Record

of

Revisions

Table

of

Contents

List

of

Illustrations

List

of

Tables

Description

and

Operation

Service

Method

Disassembly

Assembly

Testing

Illustrated

Parts

List

MICROPHONE

HEADSET

SYSTEM

DR-6020

PAGE

ill

iv

1

thru

10

11

thru

12

13

thru

14

15

18

thru

19

20

thru

22

SONY.

SERVICE

MANUAL

DATE

Original

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FOR

LIST

OF

EFFECTIVE

PAGES

CHAPTER/

SECTION

PAGE

DATE

Original

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SON

Y.

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

RECORD

OF

REVISIONS

REVISION

PAGE

ISSUE

NUMBER

EFFECTED

DATE

ill

SONY.

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

TABLE

OF

CONTENS

SECTION

nARWN

iv

SUBJECT

Title

Page

List

of

Effective

Pages

Record

of

Revisions

Table

of

Contents

List

of

Illustrations

List

of

Tables

Description

and

Operation

General

System

Configuration

Functions

and

Features

Service

Method

Disassembly

Assembly

Testing

Microphone

Main-Frame

Ass’y

Checkout

Amp

Board

Mount

Checkout

Operation

Check

on

Increasing

or

Descreasing

Power

Supply

Voltage

Illustrated

Parts

List

PAGE

Original

SON

Y:.

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

LIST

OF

ILLUSTRATIONS

FIGURE

PAGE

I

DR-6020

External

Views

4

thru

5

2

System

Connection

Charts

6

thru

7

3

Microphone

Frequency

Response

Chart

10

4

Microphone

ECM-9030,

ECM-9031

Exploded

View

13

S

Cords

of

Plug

(A)

Ass’y

and

Plug

(B)

Ass’y

Arrangement

13

6

Cord

of

Microphone

Main-Frame

Ass’y

Arrangement

13

7

Microphone

ECM-9035,

ECM-9036

Exploded

View

14

8

Cord

Arrangement

14

9

Soldering

Position

14

10

Microphone

ECM-9030,

ECM-9031

Wiring

Diagram

16

il

Microphone

ECM-9030,

ECM-9031

Circuit

Diagram

16

12

Microphone

ECM-9035,

ECM-9036

Wiring

Diagram

17

13

Microphone

ECM-9035,

ECM-9036

Circuit

Diagram

a.

14

Wiring

for

Microphone

Main-Frame

Ass’

y

18

15

Wiring

for

Amp

Board

Mount

19

16

Microphone

ECM-9030,

ECM-9031

Exploded

View

21

17

Microphone

ECM-9035,

ECM-9036

Exploded

View

22

LIST

OF

TABLES

TABLE

PAGE

1

DR-6020

Combination

Examples

3

2

Specifications

8

thru

9

Original

1.

SONY.

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

Description

and

Operation

A.

General

(1)

Scope

This

service

manual

with

illustrated

parts

list

(IPL)

covers

the

Sony

corporation,

DR-6020

microphone

headset

system.

B.

System

Configuration

This

equipment

is

a

microphone

headset

system

to

be

used

in

the

cockpit

and

cabin

of

a

general

aircraft.

Connected

to

the

audio

communication

system

in

the

cockpit,

it

converts

audio

signals

into

electrical

signals,

or

vice

versa,

permitting

intercommunication

inside

the

cockpit,

between

the

cockpit

and

the

cabin,

and

between

the

cockpit

and

a

ground

station.

The

system

consists

of

a

receiver

MDR-7020,

a

microphone

ECM-9035, ECM-9036,

ECM-9030, ECM-9031,

a

receiver

connecting

cord

RK-8010,

RK-8011,

RK-8020,

RK-8021, RK-8015,

RK-8016,

RK-8025,

RK-8026,

and

a

plug-adaptor

PC-8410.

These

components

can

be

used

in

combination

according

to

the

purpose.

(See

Table

1.)

C.

Function

and

Features

(See

Figure

1.)

(1)

(2)

(3)

MDR-7020

A

dynamic

type

receiver

with

earpieces

for

both

ears,

equipped

with

connector

jacks

on

both

sides

for

convenient

connection.

Unlike

with

one

ear

receiver,

using

both

ears

means

sound

pressure

levels

are

kept

low,

reducing

ear

fatigue

to

a

minimum,

and

the

open-ear

design

means

that

effects

on

the

ears

from

changes

in

air

pressure

are

also

minimized.

The

impedance

of

the

receiver

is

320

ohms.

ECM-9030,

ECM-9035

An

electret

condenser

microphone

(with

built-in

amplifier)

which

converts

the

MDR-7020

to

a

full

microphone

headset

system.

It

employs

a

high-performance

unidirectional

electret

condencer

micro-

phone

unit

at

the

end and

a

flexible

pipe

at

the

boom

to

permit

the

unit

to

be

set

in

the

most

convenient

position.

Moreover,

thanks

to

a

180-degree

rotatable

function

at

the

boom

end,

the

microphone

can

be

mounted

on

either

the

left

or

right

side

of

the

MDR-7020

for

optimum

voice

pickup.

The

microphone

operates

on

8

to

32

V

DC

(nominal

12

V

DC).

The

nominal

impedance

is

150

ohms

(AC

load)

and

the

matching

impedance

is

100

to

470

ohms.

ECM-9031,

ECM-9036

An

electret

condenser

microphone

(with

built-in

amplifier)

which

converts

the

MDR-7020

to

a

full

microphone

headset

system.

It

employs

a

high-performance

unidirectional

electret

condencer

micro-

phone

unit

at

the

end

and

a

flexible

pipe

at

the

boom

to

permit

the

unit

to

be

set

in

the

most

convenient

position.

Moreover,

thanks

to

a

180-degree

rotatable

function

at

the

boom

end,

the

microphone

can

be

mounted

on

either

the

left

or

right

side

of

the

MDR-7020

for

optimum

voice

pickup.

The

microphone

operates

on

8

to

32

V

DC

(nominal

12

V

DC).

The

nominal

impedance

is

150

ohms

(AC

load)

and

the

matching

impedance

is

100

to

470

ohms.

It

has

a

resistor

in

the

plug

for

connecting

the

receiver,

and

its

receiver

impedance

is

600

ohms.

Original

Original

(4)

(5)

(6)

(7)

(8)

SON

Y:

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

RK-8010,

8015

A

connecting

cord

for

independent

use

of

the

receiver

MDR-7020.

It

can

be

connected

to

either

the

left

or

right

side

of

the

MDR-7020

with

the

respective

connector.

RK-8020,

8025

A

connecting

cord

for

independent

use

of

the

receiver

MDR-7020.

It

can

be

connected

to

either

the

left

or

right

side

of

the

MDR-7020

with

the

respective

connector.

It

has

curled

portion.

RK-8011,

8016

A

connecting

cord

for

independent

use

of

the

receiver

MDR-7020.

It

can

be

connected

to

either

the

left

or

right

side

of

the

MDR-7020

with

the

respective

connector.

It

has

a

resistor

in

the

plug,

and

its

receiver

impedance

is

600

ohms.

RK-8021,

8026

A

connecting

cord

for

independent

use

of

the

receiver

MDR-7020.

It

can

be

connected

to

either

the

left

or

right

side

of

the

MDR-7020

with

the

respective

connector.

It

has

curled

portion

and

has

a

resistor

in

the

plug.

Its

receiver

impedance

is

600

ohms.

PC-8410

A

plug

adaptor

with

a

push-to-talk

switch

which

enables

hand-operated

control

of

transmission.

It

is

connected

between

the

microphone

input

jack

of

the

aircraft

intercom

system

and

the

microphone

output

plug

of

the

ECM-9030, ECM-9031,

ECM-9032, ECM-9035,

ECM-9036.

The

transmitter

will

be

active

only

while

the

switch

button

is

pushed.

SONY:

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

TABLE

1

DR-6020

Combination

Example

PURPOSE

OF

USE

Independent

use

of

the

receiver

(e.

g.

when

using

hand

microphone)

In

case

of

the

receiver

impedance

is

320

ohms.

COMBINATION

EXAMPLE

COMPONENTS

USED

MDR-7020,

RK-8010

MDR-7020,

RK-8020

MDR-7020,

RK-8015

MDR-7020,

RK-8025

MDR-7020,

ECM-9030

or

MDR-7020,

ECM-9035

Intercommunication

(e.

g.

when

using

push-to-talk

switch

on

control

yoke

or

audio

panel)

MDR-7020,

ECM-9030,

PC-8410

Intercommunication

(For

hand-operated

control

of

transmission)

|

PURPOSE

OF

USE

Independent

use

of

the

receiver

(e.

g.

when

using

hand

microphone)

or

MDR-7020,

ECM-9035,

PC-8410

In

case

of

the

receiver

impedance

is

600

ohms.

COMBINATION

EXAMPLE

COMPONENTS

USED

MDR-7020,

RK-801

1

or

MDR-7020,

RK-8021

or

MDR-7020,

RK-8016

or

MDR-7020,

RK-8026

MDR-7020,

ECM-9031

or

MDR-7020,

ECM-9036

Intercommunication

(e.

g.

when

using

push-to-talk

switch

on

control

yoke

or

audio

panel)

MDR-7020,

ECM-9031,

PC-8410

Intercommunication

(For

hand-operated

control

of

transmission)

or

MDR-7020,

ECM-9036,

PC-8410

3

Original

SONY:

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

RECEIVER

MDR-7020

RECEIVER

CONNECTING

CORD

RK-8010,

RK-8011

U

RECEIVER

CONNECTING

CORD

RK-8015,

RK-8016

RECEIVER

CONNECTING

CORD

RK-8020,

RK-8021

—

RECEIVER

CONNECTING

CORD

RK-8025,

RK-8026

Original

4

SONY.

SERVICE

MANUAL

FOR

MICROPHONE

HEADSET

SYSTEM

DR-6020

MICROPHONE

ECM-9030,

ECM-9031

AMPLIFIER

BOOM

MICROPHONE

MICROPHONE

ECM-9035,

ECM-9036

BUILT-IN

AMPLIFIER

BOOM

MICROPHONE

PLUG

ADAPTOR

PC-8410

SWITCH

Figure

1.

DR-6020

External

Views

5

Original