TANDBERG 3002 Manuale utente

TANDBERG”

Control

Amplifier

3002

Circuit

Diagrams

and

Alignment

Instructions

TANDBERG*—

The

European

Alternative

Dismantling

@

Top

cover,

rear

(1).

@

Front

panel

(4).

Remove

rotary

knobs.

@

Bottom

cover

(5).

@

Top

cover,

front

(2).

@

Rear

panel

(3).

Figure

1

Dismantling

the

rear

and

top

covers

Figure

2

Dismantling

the

front

and

bottom

covers

ALL

BOARDS

ARE

SEEN

FROM

THE

SOLDER

SIDE.

TEST

POINTS

FOR

AC-VOLTAGES

IN

COLOUR.

Figure

3

Connector

board

AC

voltages

The

table

below

gives

AC

voltages

for

the

test

points

in

Figures

3

and

4.

Test

conditions

Signal:

1000

Hz.

Volume

controls:

Max.

position.

Tone

controls:

Mid.

position.

Balance

control:

Mid.

position.

Test

points

with

input

signal

voltages

3

4

2mvV

0.16

mV

16

mV

145

mV

1.0

V

Test

points

with

AC

voltages

are

also

given

in

the

diagrams

on

pages

4

and

5.

145

mV

(1)*

145

mV

(2)*

145

mV

(5)*

145

mV

(6)*

1.0

V

Test

points

with

signal

voltages

The

numbers

in

parantheses

indicate

the

corresponding

input

test

points.

Figure

4

Input

RIAA

board

13]

1

|

21

19

17

|

15

14

12

22

20

18

16

TOV

145

mV

N

|

<

—_

o

3

<

5

145

mV

6

145

mV

|

CONNECTOR

BOARD

At

|

OUTPUT

|

XQ

R-CH.

\

on

Coa”

ee

PHONO

MC

PLAY

L-CH

REC

G

ei

™.etay

R-CH

REC

PLAY

L-CH

REC

=

\

TAPE

1

se

R-CH

REC

9)

(a

Figure

5

Circuit

diagram,

input

amplifiers

Q201

Bcesips

282V

R293

(22k

|

R201

[220k]

R202

aan

Q

243

804478

omc

Q

209

ac

race

ir

iia

IN

a

st

3}

1%

MET.

FILM

11

/

145

mV

|

Bs

By

Sop

TAPE

2

Ca18

R328

JH

C327.

5

eli

8

TAPE

1

K

201

ROP-21124

2

lz

I3

al

le

sl

Is

él

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a

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a|

Is

=e

eo

La

iewwcctions

|

J210

'

R350

U

RII

2!

|

R3

38

pik}

te

p207

|

5407

Y

5

I

al

js

al

Ie

—

Fc.

1

\7

al

1.

Ly

a)

TEST

POINTS

WITH

AC

-

VOLTAGES

IN

COLOUR

HEADPHONE

VOLUME

115/230V-~

50/60Hz

MPSU

06

+32

VDC

CR610

2/

3|

sl

2x1N4004

Q617

BC

4858

FUSE

230¥

1T200mA

115V

T&00mA

POWER

TOTAL

300W

ee

|

Cc}

SWITCHED

coe

nnn

an

nnn

nn

nnn

nn

aan

sn

aan

nn

sr

nm

ann

aan

anna

sn

nn

nnn

sn

ann

nn

nr

rr

nn

rrr

nn

rn

nnn

a

sn

ss

ee

t13

tls

tis

il6

tla

R525

[22k]

Bz

|Low-

|

|NESS

Chal

=

G

@o

C409

:

‘ony

a

;

,

1

|

7°"

fa

eee

wa

es

aces

eae

ae

=

=e

PART

OF

|

fj

NYA2423

LED

BOARD

=)

BCS47A

nN

®i4v

TONE

A110

x

DEFEAT

{15

i}

|

5xSLP132B

hp

BALANCE

ob

&

i

10y

MAIN

25

VOLUME

As

Bs

1

0

V

CR4O}

VS

Bcatgn

1N

4148

CR403

IN4148

TAPE

1

C442

100n

C437

aa

C439

C440

a

én7

é

—

pb

ESE

vm

ge

em

EEF

J

oe

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ge

e

=

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ee

Teng

SlJlslin6e

l

72)

8°)

8)

INTERCONN.

|

BOARD

NO.2

|

Soe

Sen

SE

eer

|

A7

|

Leeda

|

INTERCONN.

BOARD

=

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ee

|

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meena

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reece)

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|

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eon,

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In;

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bape

ee

IS

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ene

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et

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:

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|

5409

|

:

PROGRAM

SELECTOR

i

f

ji

|

ib

3

|

28

SUI

cai

&

pie

lay

2

1.0V

|

5407

In)

tl2

ae

CR402

tla

tis

CR&06

be

or

a

tia

tla

|

ae

Sea

ed

ge

ee

eS

rene

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ON

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ee,

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te

ee

er

Sem

ene

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TO en

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RS

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ae

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Da

Figure

6

Circuit

diagram,

headphones

amplifier,

tone

controls

and

power

supply

TEST

POINTS

WITH

AC

-

VOLTAGES

IN

COLOUR

Figure

7

Selector

board

AC

voltages

The

table

below

gives

AC

voltages

for

test

points

in

Figures

7

and

8.

7

Test

points

with

input

signal

voltages

1—2-—5-6

3

4

145

mV

2mV

0.16

mV

@

\

>)

8

5

re

145

mV

3

1.0

V

=

145

mV

s

1.0V

3

145

mV

12

V

unloaded

2

145

mV

2

12

V

unloaded

Jn

Test

conditions

Signal:

1000

Hz.

Volume

controls:

Max.

position.

Tone

controls:

Mid.

position.

Balance

control:

Mid.

position.

Test

points

with

AC

voltages

are

also

given

in

the

diagrams

on

pages

4

and

5.

Figure

8

Figure

9

AC

outlet

board

ALL

BOARDS

ARE

SEEN

FROM

THE

SOLDER

SIDE.

TEST

POINTS

FOR

AC-VOLTAGES

IN

COLOUR.

+

32.0

V

DC

—

32.0

V

DC

Figure

10

Power

supply

board

Adjusting

the

supply

power

(+

32

V)

@

Adjust

R611

for

+

32.0

V

at

7,

J503

(Figure

10).

@

Adjust

R612

for

—

32.0

V

at

4,

J503

(Figure

10).

Tandberg

Control

Amplifier

TCA

3002

Technical

data

Power

requirements:

Power

consumption:

30

W

max.

Preamp:

AC-outlets:

Unswitched

1

Headphones:

Switched

3

Headphones

(min.

load):

Dimensions:

Width

17

1/8”

(43.5

cm)

Tone-control

Response

Depth

13%"

(35.0

cm)

Bass:

Height

3%"

(

8.3

cm)

Treble:

Weight

12.5

Ibs

(5,7

kg)

Loudness:

Technical

Data

according

to

IHF-A-202,

1978

Filter

Sub

Sonic:

Frequency

response

Phono

MM:

20

—

20,000

Hz

+

0.2dB

Crosstalk

(100

Hz

—

10

kHz)

Phono

MC:

20—20,000Hz

+

0.2dB

Phono

MM:

Tape

1,

Tape

2:

20

—

20,000

Hz

+

0/—

0.1

dB

Phono

MC:

Tuner,

AUX:

20

—

20,000Hz.

+0/—0.1dB

Tape

1,

Tape

2:

Tuner,

AUX:

Maximum

Voltage

Output

Preamp

output:

Preamp

output:

Tape

1,

Tape

2:

Headphone

output:

Secondary

Disclosures

115/230

V

£10%,

50/60

Hz

Output

Impedance

5

Vat

THD

=

0.004%

10

Vat

clipping

level

Phono

MM:

7.5V

Phono

MC:

20

V

unloaded

Tape

1,

Tape

2:

Separation

(100

Hz

—

10

kHz)

560

ohms

+

10

uF

in

series

470

ohms

4

ohms

+

10

dB

at

50

Hz

+

10

dB

at

10,000

Hz

Max.

7

dB

at

50

Hz

Max.

3

dB

at

10,000

Hz

—

12dB/oct.,

—3dB

at

15

Hz

To

any

of

the

other

sources

>

70dB

To

any

of

the

other

sources

>

70dB

To

any

of

the

other

sources

—

70

dB

To

any

of

the

other

sources

>

70dB

>

53

dB

>

53

dB

>

58

dB

>

58

dB

Immeasurable

5

—

130,000

Hz,

+

0/—

1.5

dB

5

—

130,000

Hz,

+

0/—

1.5

dB

+

9,5°/—2.5°

+

9,5°/—2.5°

@

Specifications

are

subject

to

change

for

further

—

Black

acrylic

side

walls

for

freestanding

units.

Tuner,

AUX:

Total

Harmonic

Distortion

(20

Hz

—

20,000

Hz)

Phono

MM:

<

0.004%

Transient

intermodulation

Phono

MC:

<

0.004%

All

inputs:

Tape

1,

Tape

2:

<

0.004%

Tuner,

AUX:

<

0.004%

:

Other

Technical

Data

Input

Sensitivity

—

Ref.

0.5

V

output

voltage

Phono

MM:

1mvV

Frequency

Response

Phono

MC:

80

uV

Tape

1,

Tape

2:

Tape

1,

Tape

2:

70

mV

—

Tuner,

AUX:

Tuner,

AUX:

70

mV

Phase

shift

(20

Hz

—

20,000

Hz)

A-weighted

Signal-to-Noise

Ratio

Tape

1,

Tape

2:

Phono

MM:

80

dB

Tuner,

AUX:

Phono

MC:

74

dB

Tape

1,

Tape

2:

95

dB

Tuner,

AUX:

95

dB

Maximum

Input

Voltage

(1

kHz)

:

Phono

MM:

290

mV

improvement

without

notice.

Phono

MC:

22

mV

Tape

1,

Tape

2:

11

V

Tuner,

AUX:

11

#V

Input

Impedance

Optional

Extras

Phono

MM:

33

/

47

/

100

kohms

Phono

MC:

1

kohm

Tape

1,

Tape

2:

47

kohms

Tuner,

AUX:

47

kohms

—

Attachment

sets

for

installation

in

19

inch

racks.

TANDBERG’

The

European

Alternative

Tandberg

A/S,

Post

Office

Box

53,

2007

Kjeller,

Norway

1737-8-80

Part

No.

714138

Printed

in

Norway

by

Reclamo

A/S

©

Tandberg

A/S

1980

TANDBERG 3002 Manuale utente

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