TANDBERG TCD 310 Bedienungsanleitung

Andere Handbücher für TCD 310

1

Inhaltsverzeichnis

Andere TANDBERG Kassettenspieler Handbücher

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Service

Manual

Cassette

Deck

TANDBERG

CONTENTS

lz

Dsmanthings

.

24

-.teaw.

ah.

OR ee

3

1.1

Removal

of

top

plate.............

3

1.2

Removal

of

inner

top

plate

........

3

1.3

A

note

on

reassembling

...........

3

2.

Regular

maintenance

...............-

4

Peas

CHANTS

ok

cet,

Sees,

Gees

ee

ee

4

2

eoatssiney

8.

feet

ae

ee

ae

APOBAS

GATIONS.

grec’.

Cie

ae

wane

ey

a

3.

Mechanical

servicing

................

5

3.1

Microswitches

MS

1

and

MS

2......

5

3.2

Tape

path

adjustments

...........

5

Sealy

OUDMIME:

[ies

cn:

.

aie

=

oe

D

See

DeTaON

s

atid.

Tas

ous

oe

ee

6

3.3

Replacing

the

drive

belt...........

8

GPa

CAssene

AMM.

.

ms

he

eee

10

3.5

Pinch

roller

solenoid..............

10

DFO

WHalISe,

CONUEON

..

eat

Bete

ee

11

3.7

Adjusting

the

position

of

a

reel

motor

11

5.8

Salvaging

tangled

tape

............

11

4.

Motor

and

solenoid

circuits

...........

12

4,1

Solenoid

operating

circuit

.........

12

4,2

Motor

control

circuits

............

13

4.3

Control

of

motor

voltages

.........

13

5.

Electrical

adjustments

...............

14

6.

Circuit

diagrams....................

16

1.

DISMANTLING

Bal

REMOVAL

OF

TOP

PLATE

1.

Remove

the

plastic

lid

from

the

cassette

com-

partment,

and

push

the

compartment

down

to

closed

position.

2.

Remove

the

RECORD

LEVEL

buttons

(A).

Remove

the

3

screws

on

the

top

plate

(B)

and

the

3

screws

at

the

top

of

the

rear

plate

(C).

US-version

only:

Remove

the

nuts

from

the

microphone

sockets

(D).

3.

Grip

the

left

edge

of

the

cassette

compartment

aperture

with

your

fingers

(indicated

with

arrows

on.

the

drawing).

Remove

the

top

plate

by

lifting

the

rear

edge

first,

and

pulling

the

plate

away

from

the

recorder.

1.2

REMOVAL

OF

INNER

TOP

PLATE

The

inner

top

plate

with

indicators

and

volume

controls

can

be

lifted

to

the

vertical

position

to

give

access

to

the

electrical

parts.

1.

Remove

the

plastic

cover

of

the

indicators.

2.

Remove

the

left

side

wall

by

unscrewing

the

two

black

screws.

3.

Push

the

operating

buttons

(E)

out

to

the

left.

4.

Remove

the

plastic

arm

(F)

from

the

PAUSE

switch.

5.

Unscrew

the

6

screws

(G).

6.

Unhook

the

eject

interlock

arm

from

the

moving

plate

on

the

switch

bracket.

7.

Grip

the

right

edge

of

the

inner

top

plate

and

lift

it

carefully

to

vertical

position.

1.3

ANOTE

ON

REASSEMBLING

When

reassembling

make

sure

that

the

hooks

(J)

on

the

operating

buttons

are

hooked

onto

the

plastic

arms

on

the

switches.

Also

make

sure

that

the

eject

interlock

arm

is

hooked

onto

the

moving

plate

on

the

eject

switch

bracket.

Cassette

compartment

Plastic

cover

Inner

top

plate

Left

side

wall

Oe

ec

OCpoocoo

oF

(ohkenonek

chutenekokekenes

i

|

j

Profile

of

operating

button,

zZ

2.1

CLEANING

The

parts

of

the

cassette

deck

that

are

in

contact

with

the

tape

surface

should

be

cleaned

regularly,

otherwise

the

sound

quality

will

be

greatly

reduced.

Cleaning

of

capstans

and

pinch

rollers

is

particularly

important

to

avoid

wow

and

flutter.

If

the

cassette

deck

is

used

every

day,

cleaning

should

be

performed

at

least

once

a

month.

The

cleaning

can

be

done

with

cotton

wool

or

a

piece

of

flannel

wrapped

around

a

small

stick

and

moistened

with

pure

alcohol

or

methylated

spirit.

A

kit

intended

for

this

purpose,

Tandberg

Profes-

sional

Tape

Head

Cleaner”’,

is

available.

NOTE!

Do

not

use

solvents,

such

as

acetone

or

trichlor-

ethylene,

as

these

may

damage

the

heads.

How

to

clean

1.

Press

the

EJECT

button,

and

remove

the

plastic

lid

from

the

cassette

compartment.

2.

Push

the

cassette

compartment

down

to

closed

position.

3.

Clean

the

record/playback

head

(A),

erase

head

(B),

tape

guide

(C),

capstans

(D)

and

pinch

rollers

(E).

Do

not

use

too

much

cleaning

liquid

on

the

pinch

rollers,

and

dry

them

afterwards.

DO

NOT

USE

ANY

SHARP

OBJECTS

WHEN

CLEANING.

DO

NOT

TOUCH

THE

ADJUST-

MENT

SCREWS.

4.

Check

the

surrounding

area

for

dust

and

de-

posits

from

the

tape.

Clean

if

required.

Cleaning

should

be

performed

both

before

and

after

adjustments.

2.2

DEGAUSSING

A

marked

increase

in

background

noise

from

the

tape

may

indicate

that

the

heads

or

other

parts

in

the

tape

path

should

have

the

residual

magnetism

removed

(degaussing).

If

required,

degaussing

should

be

carried

out

as

follows.

Switch

off

the

deck.

Remove

the

cassette

from

the

deck.

Remove

the

plastic

4

REGULAR

MAINTENANCE

eco

he

fe

"a

se

Neen

f

PW

A

eaaeem

Pei

Rineasy,

Parts

to

be

cleaned

cassette

compartment

lid

and

move

the

de-

gausser

slowly

past

each

one

of

the

metal

parts

normally

in

contact

with

the

tape.

Take

great

care

not

to

let

the

degausser

touch

the

heads

or

metal

parts

in

the

tape

path.

Do

not

switch

off

the

de-

gausser

until

it

is

at

least

3

ft

from

the

deck.

Degaussing

should

be

performed

both

before

and

after

adjustments.

2.3

LUBRICATION

The

capstan

motor

and

the

reel

motors

may

require

lubrication

from

time

to

time.

The

interval

between

each

lubrication

should

be

at

least

3000

hours

of

operation.

Use

the

following

types

of

oil:

Capstan

motor:

ANDEROL

465

from

Tenneco

Chemicals,

U.S.A.,

or

oil

supplied

by

Tandberg.

Reel

motors:

NUTO

H36

(also

called

SPINESSO

34)

from

Esso.

NOTE!

Use

only

one

drop

of

oil

for

each

motor.

3.

MECHANICAL

SERVICING

3.1

MICROSWITCHES

MS

1

AND

MS

2

Pinch

rollers

released:

MS

1:

Check

that

there

is

a

gap

of

about

1

mm

between

the

connecting

arm

and

the

middle

leaf

of

the

switch

(see

figure).

MS

2:

Check

that

the

two

leaves

of

the

switch

are

pressed

together

between

the

solenoid

operating

lever

and

the

bracket.

Adjust

by

bending

the

bracket.

Pinch

rollers

operated:

MS

1:

Check

that

the

left

and

the

middle

leaf

are

pressed

together.

MS

2:

Check

that

the

switch

is

open.

3.2

TAPE

PATH

ADJUSTMENTS

The

following

equipment

is

needed:

—

An

ordinary

high

quality

cassette

which

has

been

cut

open

so

that

the

tape

is

visible

(see

figure).

—

Tandberg

test

tape

No.

23

(azimuth

test).

For

really

extensive

adjustments

—

for

example

if

several

parts

in

the

tape

path

are

replaced

—

a

Tandberg

Adjustment

Plate

may

be

needed.

Such

adjustments

should

be

carried

out

by

a

Tandberg

representative.

3.2.1

Outline

of

the

adjustment

procedure

Insert

an

open

cassette

and

set

the

deck

to

PLAY.

Check

that

the

tape

does

not

”climb”’

on

the

capstans

and

is

not

bent

or

folded

at

the

tape

guides.

Also

check

that

the

tape

does

not

”bulge”

at

the

heads

(’*bulging”

indicates

wrong

azimuth

adjustment

of

the

heads).

When

viewed

from

above

the

tape

should

be

seen

as

an

almost

invisible

line.

Also

check

that

the

top

of

the

erase

head

is

flush

with

the

top

edge

of

the

tape.

The

erase

head

should

not

be

visible

above

the

tape.

If

erratic

tape

motion

is

observed,

try

to

eliminate

it

by

turning

the

adjustment

screws

for

heads

or

pinch

rollers.

Insert

a

Tandberg

test

tape

No.

23

and

adjust

with

the

screw

(AZ)

on

the

record/playback

head

to

maximum

output

signals

on

both

OUTPUT

sockets.

The

difference

between

the

tracks

should

be

less

than

4

dB.

(Details:

see

next

page.)

Tandberg

Adjustment

Plate

3.2.2

Details

of

adjustment

procedure

@

Pinch

rollers.

Parallelity.

Move

the

mounting

plate

inwards

so

that

the

pinch

rollers

almost

touch

the

capstans.

Adjust

with

the

screws

(P)

so

that

both

rollers

are

parallel

with

the

capstans.

A

white

piece

of

paper

can

be

inserted

behind

the

pinch

roller

and

capstan

to

make

it

easier

to

see

the

gap

between

them.

Height.

Insert

the

open

cassette.

Move

the

mounting

plate

inwards

and

check

that

the

tape

fits

exactly

into

the

tape

guide

on

pinch

roller

1.

Adjust

with

the

two

screws

(H)

if

necessary

(turn

both

screws

equal

amounts).

Also

turn

the

azimuth

screw

(AZ)

correspondingly

in

the

opposite

direction

to

keep

the

roller

roughly

in

correct

azimuth

position.

Adjust

pinch

roller

2

to

corresponding

height.

This

adjustment

is

not

critical.

Azimuth.

Set

the

cassette

deck

to

PLAY

and

check

that

the

tape

does

not

”climb”

on

the

capstans.

If

necessary,

adjust

with

the

screws

(AZ).

Check

again

that

the

tape

is

not

bent

or

folded

at

the

tape

guide

of

pinch

roller

1.

Also

check

the

parallelity

again.

Height

and

azimuth

can

also

be

adjusted

by

means

of

a

Tandberg

Adjustment

Plate.

The

pinch

rollers

are

then

checked

against

the

tabs

marked

A

and

B

in

the

figure.

(A

special

adjustment

plate

for

the

pinch

roller

shafts

can

also

be

used).

Pinch

roller

operation.

Remove

the

cassette

and

move

the

mounting

plate

inwards.

Check

that

both

pinch

rollers

meet

the

capstans

at

exactly

the

same

time

(the

pinch

rollers

will

start

rotating

when

they

touch

the

capstans).

If

required,

adjust

with

the

eccentric

screw

as

shown.

@

Erase

head

The

position

of

the

erase

head

is

adjusted

by

turning

the

screws

on

the

head

mounting

plate

(see

top

figure

next

page

).

Preadjustment

of

head

mounting

plate.

Adjust

with

the

screws

(H)

and

(AZ)so

that

the

head

mounting

plate

is

parallel

with

the

underlying

mounting

plate.

The

gap

between

them

should

be

approx.

1

mm.

To

check

this,

the

right

chassis

plate

must

be

removed.

6

Height

Azimuth

Parallelity

Adjustment

screw

for

pinch

roller

operation

Preadjustment

of

head

mounting

plate

Adjustment

of

erase

head.

Insert

the

open

cassette

and

move

the

mounting

plate

inwards.

Adjust

with

the

screws

(H)

and

(AZ)

so

that

the

top

of

the

erase

head

is

flush

with

the

top

edge

of

the

tape.

The

front

of

the

erase

head

should

be

parallel

with

the

tape.

Set the

deck

to

PLAY.

Check

that

the

erase

head

is

not

visible

above

the

tape,

and

that

the

tape

does

not

bulge”

at

the

head.

Keep

the

head

mounting

plate

parallel

with

the

underlying

mounting

plate.

The

screws

(H)

must

not

be

unscrewed

too

far,

as

the

spring

under

the

head

mounting

plate

will

then

prevent

the

mounting

plate

from

moving

freely.

An

Adjustment

Plate

can

also

be

used.

In

this

case

the

top

of

the

erase

head

should

be

flush

with

tab

D.

The

front

of

the

erase

head

should

be

parallel

with

the

tab.

M@

Record/playback

head

The

position

of

the

record/playback

head

is

adjusted

by

turning

the

screws

on

the

head

bracket.

Do

not

touch

the

adjustment

screws

for

the

head

mounting

plate.

It

is

assumed

that

the

head

mounting

plate

has

already

been

correctly

adjusted

Height

and

parallelity.

Insert

the

open

cassette

and

move

the

mounting

plate

inwards.

Adjust

with

the

screws

(H)

and

(P)

so

that

the

tape

fits

exactly

into

the

tape

guide

of

the

head.

The

front

of

the

head

should

be

parallel

with

the

tape.

Set

the

deck

to

PLAY.

Check

again

that

the

tape

is

not

bent

or

folded

at

the

tape

guide,

and

does

not

*bulge’’

at

the

head.

Azimuth.

Insert

a

Tandberg

test

Tape

No.

23

(6,300

Hz

azimuth

test).

Connect

a

voltmeter

to

each

OUTPUT

socket

and

set

the

deck

to

PLAY.

Adjust

with

the

screw

(AZ)

to

maximum

output

signals

with

no

more

than

4

dB

difference

between

the

tracks

(adjust

to

best

compromise).

Check

the

height

and

parallelity

again,

and

re-

adjust

if

necessary.

If

readjustments

are

made,

the

azimuth

must

be

checked

again.

If

an

Adjustment

Plate

is

used,

the

parallelity

must

be

checked

against

tab

F,

and

the

height

against

tab

E.

Do

not

turn

the

screws

while

the

tape

guide

of

the

head

touches

tab

E

as

this

may

cause

bending

of

the

tape

guide.

Tracking

control.

Insert

an

ordinary

cassette

and

record

a

signal

on

both

tracks.

Then

turn

the

cassette

around

and

set

the

deck

to

PLAY.

Listen

for

crosstalk

on

the

recorded

piece

of

tape.

Head

mounting

plate

Right

chassis

plate

Adjustment

screws

for

erase

head

Tandberg

Adjustment

Plate

Adjustment

screws

for

record/playback

head

Open

cassette

3.3.

REPLACING

THE

DRIVE

BELT

Before

starting

this

operation

remove

the

top

plate

and

the

cassette

compartment

lid.

1.

Wind

a

piece

of

sellotape

a

few

times

around

each

capstan

(see

fig.).

This

is

done

to

ensure

that

the

capstans

and

flywheels

will

stay

in

place

during

the

dismantling.

2.

Unhook

the

connecting

spring

from

the

mounting

plate.

Be

sure

to

note

which

notch

the

spring

is

fastened

to,

so

that

you

will

be

able

to

replace

it

correctly.

3.

|

Unhook

the

drive

belt

from

the

pulley.

4.

Remove

the

circlip

on

the

front

side

of

the

cassette

compartment

(see

fig.).

5.

Unhook

the

locking

lever

from

the

cassette

compartment.

The

cassette

compartment

can

now

swing

upwards.

6.

Unscrew

the

two

screws

(B)

holding

the

guide

brackets

for

the

mounting

plate.

7.

Unhook

the

two

guide

brackets

and

pull

them

out

through

the

holes

(C).

8.

Remove

the

mounting

plate

carefully.

1

12.

13.

14.

Unscrew

the

three

screws

(D)

holding

the

flywheel

mounting

plate

and

—

—

lift

out

the

flywheel

mounting

plate

with

capstans

and

flywheels.

Remove

the

old

drive

belt.

Place

the

new

drive

belt

around

the

flywheels

and

hook

it

around

the

cassette

guides

(see

fig.)

TAKE

CARE

NOT

TO

GET

OIL

OR

GREASE

ON

THE

DRIVE

BELT.

Replace

the

flywheel

mounting

plate

and

hook

the

drive

belt

around

the

pulley.

NOTE!

The

drive

belt

should

pass

under

the

counter

drive

belt.

Replace

the

mounting

plate

and

check

that

it

runs

freely

back

and

forth.

Add

a

little

grease

on

the

ball

bearings

if

required.

se

Mobilplex

grease

No.

47

or

equivalent.

Replace

all

other

parts.

Remove

the

sellotape

from

the

capstans

and

CLEAN

THE

CAP-

STANS

THOROUGHLY.

Insert

a

cassette

and

check

that

the

tape

does

not

stick

to

the

capstans.

3.4

CASSETTE

ARM

The

cassette

arm

can

be

adjusted

by

bending

the

end

which

normally

rests

against

the

cassette

(see

figure).

Insert

a

cassette,

close

the

cassette

compartment

and

check

the

following:

—

The

cassette

should

rest

against

the

cassette

guides.

—

Microswitch

MS

4

should

be

closed.

(If

neces-

sary,

MS

4

can

be

adjusted

by

bending

the

support

bracket

for

the

microswitch).

—

The

locking

lever

extending

from

the

cassette

compartment

and

down

through

a

slot

in

the

motor

support

plate

should

be

about

2

mm

from

the

right

end

of

this

slot

(see

figure).

NOTE!

If

the

cassette

arm

is

bent

too

much

to

the

right,

the

locking

lever

will

be

moved

so

far

to

the

left

that

it

will

not

lock

the

cassette

compartment

in

the

lower

position.

—

When

the

cassette

compartment

is

released,

the

cassette

arm

should

push

the

cassette

half-way

out

of

the

compartment.

3.5

PINCH

ROLLER

SOLENOID

1.

Set

the

deck

to

play.

2.

Check

that

the

connecting

spring

is

stretched

approximately

0.5

-

0.7

mm.

The

figure

shows

how

this

check

is

made.

(Lhe

microswitches

are

not

shown

in

the

figure).

3.

If

necessary,

adjust

by

turning

the

nylon

screw

in

the

armature

of

the

solenoid.

To

reach

this

screw:

Switch

off

the

power,

lift

the

inner

top

plate

(with

the

indicators)

to

vertical

position.

Adjust

by

angling

the

screwdriver

towards

the

armature

from

the

left.

4.

Check

with

a

gauge

that

the

force

needed

to

lift

the

pinch

rollers

away

from

the

capstans

is

1000

-

1200

grams.

5.

If

necessary,

this

force

can

be

adjusted

by

moving

the

connecting

spring

to

another

notch.

If

the

spring

is

moved,

the

spring

tension

must

be

checked

again

as

explained

in

2.

10

Position

of

locking

lever

(cassette

in

compartment)

Spring

tension

(cassette

deck

in

PLAY)

Pinch

roller

pressure