Teac A-6010SL Manuel utilisateur

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TEAC

*o"

SERVICE

MANUAL

TEAC

CORPORATION

U.S.

DISTRIBUTOR:

ae

TE

EEDRET

HARE

AMERI(A

MONTEBELLO,

CALIFORNIA

90}40

U.S.A.

SALES

OFFICE:

SHINJUKU

BUILDING

EUROPEAN

DISTRIBUTOR:

TEAC

EUROPE

N.V.

}-8-1,

NISHI-SHINJUKU,

SHINJUKU,

TOKYO

KABELWEG

45-47,

AMSTERDAM

W.

2,

HOLLAND

MT601

]

El

00

PRINTED

IN

JAPAN

8718

-S-0032

Ee

he

Se

eS

ee

OS

Qed

ee

ge

eT

1

GENERAL

DESCRIPTION

The

TEAC

A-6010

has

achieved

an

enviable

reputation

for

quality

since

its

introduction

five

years

ago.

During

this

period

many

design

im-

provements

and

modifications

have

been

incorporated.

However,

the

re-

cent

introduction

of

more

versatile,

improved

tape

products

called

for

extensive

modification

and

redesign

in

order

to

provide

proper

utili-

zation

of

these

tapes.

Therefore

we

have

produced

the

new

A-6010SL,to

provide

complete

flexibility

in

selection

of

recording

tapes

and

to

meet

the

stringent

requiements

of

these

tapes.

The

basic

design

of

the

A-6010SL

is

highly

similar

to

that

of

the

A-6010,

Therefore

information

in

this

service

manual

may

be

applied

to

the

A-6010.

If

adjustments

or

repairs

are

too

complicated

and

are

difficult

for

you

to

accomplish,

or

if

you

have

any

technical

questions,

please

contact

the

nearest

TEAC

dealer

or

TEAC

Corporation

or

affiliated

corporations.

INDE

X

1.

GENERAL

DESCRIPTION

2.

SERVICE

DATA

3.

EQUIPMENT

REQUIRED

4.

PARTIAL

DISASSEMBLY

5.

HEAD

ALIGNMENT

-MECHANICAL-

6.

MEASUREMENT

AND

ADJUSTMENT

-MECHANICAL-

7.

MEASUREMENT

AND

ADJUSTMENT

-ELECTRICAL-

8.

PREVENTIVE

MAINTENANCE

9.

TROUBLE

SHOOTING

10.

WARRANTY

11.

PACKING

FOR

SHIPMENT

12.

SCHEMATIC

DIAGRAMS

13.

PRINTED

CIRCUIT

BOARD

AND

PARTS

LIST

14.

EXPLODED

VIEW

AND

PARTS

LIST

15.

MANUAL

CHANGES

5

3

2

SERVICE

DATA

MECHANICAL

Heads:

Tape

Width:

Tape

Speed:

Motors:

Wow

and

Flutter:

Fast

Winding

Time:

Operating

Position:

Power

Requirements:

Weight:

4-4

track

2

channel

stereophonic.

Erase

Record

Forward

play

and

Reverse

play;

Erase

head,

1.8k

ohm/100kHz,

erase

current

approx.

30mA

Record

section,

100

ohm/1kHz,

bias

current

approx.

2mA

Playback,

3k

ohm/1kHz

-63dB

Standard

1/4

inch

tape

3-3/4ips

and

7-1/2ips(t0.5%)

1

-

two

speed

hysteresis

synchronous

motor

for

capstan

drive.

2

-

six

pole

eddy

current

motors

for

reel

drive.

0.06%

at

7-1/2ips.

0.09%

at

3-3/4ips.

Wow

and

flutter

measured

according

to

weighted

NAB

standard

using

TEAC

flutter

free

tape.

Approx.

90

second

or

less

for

1,200

feet.

Horizontal

or

vertical.

100/117/200/220/240V

AC

50/60Hz

140W

52

lbs(net.)

Fig.

2-1

Dimensions

Specifications

and

components

subject

to

change

without

notice,

i

ELECTRICAL

Transistors:

2SC1OOOBL

x

2

28C733Y

or

2SC536F

x

5

2SA572YL4

x

2

2SC971

x

2

2SC536F

x

2

2SD

235

x

1

2SC693F

x

2

2SA494-Y

x

2

IC:

IC101/201

TEAC

42709

IC102/202

TEAC

42709

1C103/203

TEAC

42710

Diodes:

SIBO1-02

x

5,

SIBO1-06

x

8

Frequency

Response:

Overall

from

recording

INPUT

to

playback

OUTPUT.

7-1/2ips,

+2dB

30Hz

-

20kHz

3-3/4ips,

+2dB

40Hz

-

10kHz

Equalization:

NAB

equalization

7-1/2ips

50u

sec.

3-3/4ips

90u

sec.

Input:

MIC:

600

ohms,

-—70dB

(0.

25mV)

LINE:

50,000

ohms

or

more,

0.1V

Output:

LINE:

0.3V

for

load

impedance

of

10,000

ohms

or

more

HEADPHONES:

§8

ohms

Bias

Freq.:

100kHz

push-pull

oscillator

Signal

to

Noise

Ratio:

50dB

or

more

Peak

record

level

to

unweighted

noise

Cross

talk

Rejection:

Channel

to

channel

at

1kHz/45dB

or

more

Adjacent

track

at

100Hz/40dB

Erase

Efficiency:

65dB

or

more

at

7-1/2ips

NOTE

As

a

result

of

continuing

changes

and

improve-

ments

during

the

production

run,

minor

differ-

ences

may

be

found

between

early

and

later

ma-

chines,

refer

to

manual

change

sheets

for

in-

formation

concerning

modifications.

3

EQUIPMENT

REQUIRED

FOR

MECHANICAL

MEASUREMENT

SPRING

SCALE:

0

-

3kg(0

-

8

lbs)

0

-

300g(0

-

10

oz)

TEST

TAPE:

TEAC

YIT-2003

(7-1/2ips)

TEAC

YTT-2002

(3~3/4ips)

FLUTTER

METER:

SENTINEL

INC

FL-3D-1

.

DIGITAL

FREQ.

COUNTER:

Capable

of

0

to

5kHz

indication.

TOOLS:

General,

2mm

nut

driver,

Hex

head

Allen

wrench

Fig.

3-1

Spring

Scale

|

Fig.

3-2

TEAC

Hex

Allen

Wrench

Fig.

3-3

TEAC

Test

Tapes

FOR

ELECTRICAL

MEASUREMENT

«TEST

TAPE:

TEAC

YTT-1003

for

7-1/2ips

TEAC

YTT-1002

for

3-3/4ips

SCOTCH

203

and

150

for

recording

test.

EMPTY

REEL:

TEAC

RE-702(2"

hub)

TEAC

RE-701(4"

hub)

TEST

SET:

TEAC

M-826A

test

set

NOTE

Use

of

the

TEAC

M-826A

test

set

is

recommended

This

set

incorporates

an

AC

VIVM,

Audio

Oscil-

lator,

Channel

Selecting

switch,

Variable

At-

tenuator,

Monitor

Speaker

and

Cables.

TEAC

M-826A

measures

the

RMS

value

of

the

Volt-

age(OdB=0.775V).

Characteristics

of

this

test

set

are

similar

to

the

standard

VU-meter.

Fig.

4-4

TEAC

Test

Set

VIVM:

hp

model

4302B

or

equivalent

_

RESISTOR:

;

Non

inductive

type

8o0hm/1W

BAND

PASS

FILTER:

TEAC

M-206A(1kHz)

OSCILLOSCOPE:

General purpose

4

PARTIAL

DISASSEMBLY

CAUTION

Do

not

attempt

complete

disassembly

of

any

of

the

subassem-

blies.

The

list

of

individually

replaceable

parts

in

the

exploded

view

should

be

used

as

a

guide

to

disassembly

limits.

Tape

Transport:

1.

Remove

power

cord

and

other

connecting

cords.

2.

Lay

the

equipment

face

down

on

a

soft

mat.

3.

Remove

the

2

rear

cover

screws.

4.

Remove

3

upper

screws

on

both

sides

of

the

case.

5.

Lift

the

case

from

the

transport.

Amplifier:

1.

Remove

2

screws

on

both

sides

of

the

case.

2..

Lift

the

amplifier

from

case.

Removing

the

equipment

from

case

HEAD

REPLACEMENT

CAUTION

Power

to

the

unit

must

be

switched

off

when

removing

the

heads,

this

to

prevent

transient

pulses

from

passing

through

the

heads

causing

strong

magnetization

or

damage

to

the

delicate

windings.

After

head

replacement,

thorough

demagnetization

is

recommended.

NOTE

The

heads

of

the

A-6010SL

can

be

changed

either

as

a

complete

assembly

or

individually

as

necessary.

HEAD

ASSEMBLY

REPLACEMENT

To

change

the

head

assembly

as

a

unit,

remove

the

four

mounting

screws,

(one

on

each

end).

Note

the

positions

of

the

wires

on

the

circuit

board

before

unsoldering.

Solder

the

wires

of

the

new

heads

in

exactly

the

same

positions.

Fig.

4-1

Head

Assy

INDIVIDUAL

HEAD

REPLACEMENT

To

replace

a

single

head,

a

special

2mm

nut

driver

is

required.

Remove

the

two

nuts

on

the

defective

head

through

the

access

hole

provided,

this

releases

the

head

from

the

mounting

plate.

Note

the

position

of

the

wires

on

the

circuit

board.

Connect

the

new

head

in

the

same

manner.

Replace

the

nuts

securing

the

new

head

to

the

plate,

perform

head

alignment

before

operation.

Head

installation

mounting

provides

for

left

or

right

positioning.

After

in-

stalling

heads,

determine

proper

posi-

:

tion

while

recording

or

playing

back

a

it

i

pL

AYBACK

tape.

HH

i

HEAD

ONLY

D-11-4

Fig.

4-2

Individual

Heads

CAPSTAN

MOTOR

———————————————————.,—0O00

Orr

_—

eS

or

—

ev

1.

2.

3.

4.

After

motor

replacement,

check

position

of

capstan

pulley

on

shaft

for

proper

alignment

with

belt

guide.

REEL

MOTOR

Remove

the

fan.

Remove

the

capstan

belt.

Remove

the

top

®

spring

clips

holding

mount

stand

offs.

Remove

the

four

screws

holding

the

motor

and

shield

plate.

-(top)

Unsolder

the

six

wires

connecting

the

capstan

motor.

Remove

the

four

screws

holding

the

motor

and

shield

plate.

~(bottom)

Loosen

the

two

set

screws

(HEX

HEAD)

in

pulley

and

lift

off

pulley.

NOTE

Fig..4-3

Capstan

Motor

Removal

Reel

motor

assemblies

are

mirror

images

of

each

other,

these

assem-

blies

are

not

interchangeable.

Using

hex

head

wrench,

loosen

the

two

screws

on

the

counter

belt

pulley.

Remove

pulley(right

turntable

only).

Remove

the

rubber

insert,

then

remove

the

three

screws

holding

reel

table

to

motor.

Remove

the

three

screws

holding

the

reel

motor

to

the

mount.

Unsolder

four

wires

connecting

the

reel

motor

and

remove

motor

from

panel.

CAPSTAN

ASSEMBLY

CAUTION

A

clearance

of

0.02"

must

be

maintained

between

capstan

assembly.

the

flywheel

and

1.

Unscrew

capstan

cover(front

panel).

2.

Remove

two

screws

from

rear

bracket,

allow

bracket

to

drop

forward

floor

case.

Remove

capstan

belt.

Loosen

two

screws

in

capstan

assy.

flywheel.

5.

Remove

three

screws

in

capstan

assy.

6.

Gently

move

capstan

assy

up

and

down

until

it

slides

out

of

panel.

Ww

ee

Fig.

4-5

TENSION

ARM

ASSY

-LEFT-

Remove

coil

spring.

Unscrew

spring

rod.

Remove

the

brass

collar

and

washer.

Unsolder

the

two

wires

(1

white,

1

black)

from

terminal

strip.

5.

Lift

out

tension

arm.

BwWNPH

Fig.

4-6

TENSION

ARM

ASSY

-RIGHT-

Remove

coil

spring.

Loosen

set

screw

in

retainer

assy.

Remove

retainer

assy

and

washer.

Lift

out

tension

arm.

FwWN

rE

Fig.

4~7

CAPSTAN

COVER

T

Cro

Capstan

Assy

Removal

Tension

Arm

~Left-

GEFennes

GS

SET

screw

Tension

Arm

-Right-