Teac A-6100 Manuale utente

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CONTENTS

1.

GENERAL

DESCRIPTION

.

1

2.

SPECIFICATIONS

.

2,3

3.

TOOLS

FOR

TESTING

AND

MAINTENANCE

.

4

4.

TEAC

TEST

TAPE

-YTT

SERIES-

.

'5

5.

TAPE

TRANSPORT

PARTS

LOCATION

.

6

6.

PARTIAL

DISASSEMBLY

.

7

7.

LINE

VOLTAGE

AND

FREQUENCY

CONVERSION

.

11

8.

HEAD

ALIGNMENT

.

12

9.

MEASUREMENT

AND

ADJUSTMENT

-MECHANICAL-

.

14

10.

A-6100

ELECTRICAL

ADJUSTMENT

-GENERAL

NOTICE-

.

19

11.

MEASUREMENT

AND

ADJUSTMENT

-ELECTRICAL-

.

20

12.

A-6300

ELECTRICAL

ADJUSTMENT

-GENERAL

NOTICE-

.

31

13.

MEASUREMENT

AND

ADJUSTMENT

-ELECTRICAL-

.

32

14.

SERVICING

AND

MAINTENANCE

...

42

15.

LIST

OF

LINE

VOLTAGE

AND

FREQUENCY

(Hz)

USED

AROUND

THE

WORLD.

44

16.

TEAC

DECIBEL

TABLE

.

45

17.

TROUBLESHOOTING

.46,47

18.

LEVEL

DIAGRAMS

.

49,50

NOTE

When

placing

an

order

for

parts,

please

refer

to

the

PARTS

LIST

and

PRICE

LIST

FOR

PARTS

which

are

printed

separately

from

this

manual.

1.

File

the

PARTS

LIST

manual

together

with

this

SERVICE

MANUAL;

future

TECHNICAL

INFORMATION

SHEETS

should

also

be

kept

with

these.

2.

Use

the

PARTS

LIST

manual

and

the

PRICE

LIST

FOR

PARTS

when

ordering

replacement

parts

from

TEAC

Corp.

1.

GENERAL

DESCRIPTION

The

TEAC

A-6100/A-6300

is

an

excellent

home

entertainment

stereo

tape

deck,

built

to

semi-professional

standards

with

3

motors,

4

heads,

two

(selectable)

meter

scale

ranges,

and

completely

push-button

controlled

operation.

Accepts

either

7"

or

10-1/2"

reels,

and

has

tape

speeds

of

3-3/4

ips

and

7-1/2

ips

(A-6300)

or

7-1/2

ips

and

15

ips

(A-6100).

Special

features

include

switch-

selected

Bias

and

Equalization;

two

Line

Input

and

two

Line

Output

jacks

per

channel;

facilities

for

(optional)

remote/timer

controlled

operation;

and

special

features

for

the

A-6100

such

as

4-Track

playback;

MIC

ATT;

and

choice

of

0.3

V

or

0.775

V

"0

VU"

level

at

the

OUTPUT

jacks.

Although

the

A-6100/A-6300

internally

appears

to

be

similar

to

other

TEAC

models

(esp.

A-4300),

significant

differences

require

consulting

this

manual

before

any

attempt

to

service

the

deck.

This

A-6100/A-6300

Service

Manual/

Parts

Manual

contains

adjustment

and

alignment

information,

part

replacement

reference,

and

other

information

about

obtaining

new

parts.

If

adjustments

or

repair

procedures

are

not

sufficiently

clear

or

seem

too

difficult

to

accomplish,

or

for

more

detailed

technical

information,

you

may

contact

the

nearest

TEAC

Distributor,

a

TEAC

affiliated

subsidiary

corporation,

or

the

TEAC

Corporation.

TEAC

addresses

are

found

at

the

back

of

this

manual.

FEATURE

COMPARISON

CHART

A-6100::

A-6300

Tape

Speed

(ips)

15.

7K

VA.

3X

Automatic

Reverse

play

NO

YES

Counter

Repeat

(Playback)

NO

YES

Memory

ADT0-ST0P

YES

NO

Mic

Attenutor

YES

NO

Peak

Level

Indicators

YES

NO

Flip

Open

Head

Housing

YES

NO

0

VD

Marker

for

OUTPUT

YES

NO

Playback

Track

Selector

YES

NO

Output

Level

Selector

YES

NO

Other

minor

design

changes

were

also

incorporated

for

specific

differences

in

parts

and

circuitry

please

consult

the

Parts

List

and

Schematic

Diagrams.

DIMENSIONS

o

o

o

o

»j

•V

-

1

-

2-1.

SPECIFICATIONS

ELECTRICAL

ELECTRICAL

A-6100

FREQUENCY

RESPONSE:

Overall

from

recording

INPUT

to

playback

OUTPUT

lSlps

•••

40Hz'v26kHz

±3dB

7-l/2ips

•••

40Hz'v24kHz

±3dB

(Measured

at

20

dB

below

the

Specified

Level)

INPUT

IMPEDANCE:

a)

MIC:

lOkfl

(600SPvl0kQ)

b)

LINE:50kO

OUTPUT

LOAD

IMPEDANCE:

a)

LINE:

approx.

0.3V/10kO

b)

HEADPHONE:

0.3mW/8fi

0.775

V/10kS2

EQUALIZATION:

15ips

••

NAB

50psec.

3180psec.

7-l/2ips

••

NAB

50psec.

3180psec.

INPUT

LEVEL:

OUTPUT

LEVEL:

BIAS

FREQUENCY.:

a)

MIC:

-70dB±!dB

(0.25mV)

min.

b)

LINE:

-8dB

(308m

V)

-18dB

SdB

(97mV)

min.

c)

DIN:

-38dB

±2dB

min.

a)

OUTPUT:

-8dB,

OdB

selector

b)

HEADPHONE:

-24dB±SdB(4.9mV)

c)

DIN:

-8dB

100kHz

(±5kHz;

Push-pull

oscillator)

CHANNEL

SEPARATION:

45dB

or

more,

channel

to

channel

at

1kHz

ERASE

EFFICIENCY:

65dB

or

more

A-6300

FREQUENCY

RESPONSE:

Overall

from

recording

INPUT

to

playback

OUTPUT

7-l/2ips

•••

40Hz't24kHz

±3dB

3-3/4ips

•••

40Hz

,

vl6kHz

±3dB

(Measured

at

20

dB

below

the

Specified

Level)

INPUT

IMPEDANCE:

a)

MIC:

10kQ

(600S2vL0kSO

b)

LINE:50kS2

OUTPUT

LOAD

IMPEDANCE:

a)

LINE:

approx.

0.3V/10kR

b)

HEADPHONE:

0.3mW/8fl

EQUALIZATION:

7-l/2ips

••

NAB

50psec.

3180psec.

3-3/4ips

••

NAB

90psec.

3180psec.

INPUT

LEVEL:

OUTPUT

LEVEL:

a)

MIC:

-7OdB

SdB

(0.25mV)

min.

b)

LINE:

-8dB

(308mV)

-18dB

SdB

(97mV)

min.

c)

DIN:

-38dB

±2dB

min.

a)

OUTPUT:

-8dB

-2dB±$dB(610mV)

max.

b)

HEADPHONE:

-24dB±SdB(4.9mV)

c)

DIN:

-8dB

-2dB±IdB

max.

BIAS

FREQUENCY.:

CROSSTALK

REJECTION:

CHANNEL

SEPARATION:

ERASE

EFFICIENCY:

100kHz

(±5kHz;

Push-pull

oscillator)

45dB

or

more,

adjacent

track

at

125

Hz

50dB

or

more,

channel

to

channel

at

1kHz

68dB

or

more

-

NOTE

-

Value

of

"dB"

in

the

test

refer

to

0

dB=0.775V,

except

where

specified.

-If

a

Test

Set

or

an

AC

VTVM

calibrated

to

0

dB

=

IV

is

to

be

used,

appropriate

compensation

should

be

made.

Refer

to

the

TEAC

DECIBEL

TABLE

on

page

45

to

obtain

conversion

of

millivolts

to

dB

should

your

meter

not

have

a

dB

scale.

-

2

-

2-2.

SPECIFICATIONS

MECHANICAL

A-61QO

TYPE:

HEADS:

REEL

SIZE:

a)

2

track

2

channel

stereophonic

b)

2

track

2

channel

monophonic

c)

2

track

1

channel

monophonic

Erase

head

x

1,

Record

head

x

1,

2-T

Playback

x

l

4-T

Playback

x

1

10-1/2"

maximum

NAB

reel

TAPE

SPEED:

15ips

(38cm/s),

7-l/2ips

(19cm/s)

MOTORS:

WOW

AND

FLUTTER:

6-pole

eddy

current

motors

for

reel

drive

x

2

4/8

pole

hysteresis

synchronous

motor

for

capstan

drive

x

l

0.15%

at

15ips

(RMS)

0.18%

at

7-l/2ips

(RMS)

Wow

and

flutter

measured

according

to

unweighted

(RMS)

NAB

standard

using

TEAC

YTT-2004/2003

flutter

free

tape.

Above

value

is

measured

during

play¬

back.

FAST

WINDING

TIME:

Approx.

140

seconds

or

less

with

1800

ft

tape

OPERATING

POSITION:

Horizontal

or

vertical

POWER

REQUIREMENT:

DM

:

100V/50Hz,

60Hz

EX

:

100,

117,

220,

240V/50Hz,

60Hz

TCA:

117V/60Hz

*

TCA

models

for

TEAC

CORPORATION

OF

AMERICA

POWER

CONSUMPTION:

DM:

90W,

EX:

122W,

TCA:

122W

WEIGHT:

22

Kg

net

MECHANICAL

A-6300

TYPE:

HEADS:

REEL

SIZE:

a)

4

track

2

channel

stereophonic

b)

4

track

2

channel

monophonic

c)

4

track

1

channel

monophonic

Erase

head

x

1,

Record

head

x

1

,

Playback

head

x

2

10-1/2"

maximum

NAB

reel

TAPE

SPEED:

7-l/2ips

(19cm/s),

3-3/4ips

(9.5cm/s)

MOTORS:

6-pole

eddy

current

motors

for

reel

drive

x

2

4/8

pole

hysteresis

synchronous

capstan

motor

x

1

WOW

AND

FLUTTER:

0.18%

at

7-l/2ips

(RMS)

0.20%

at

3-3/4ips

(RMS)

Wow

and

flutter

measured

according

to

unweighted

(RMS)

NAB

standard

using

TEAC

YTT-2002/2003

flutter

free

tape.

Above

value

is

measured

during

play¬

back.

FAST

WINDING

TIME:

Approx.

160

seconds

or

less

with

1800

ft

tape

OPERATING

POSITION:

Horizontal

or

vertical

POWER

REQUIREMENT:

POWER

CONSUMPTION:

WEIGHT:

DM

:

100V/50HZ,

60Hz

EX

:

100,

117,

220,

240V/50HZ,

60Hz

TCA:

117V/60HZ

*

TCA

models

for

TEAC

CORPORATION

OF

AMERICA

DM:

101W,

EX:

135W,

TCA:

135W

22

kg

net

-

1

--

NOTE

-----

As

a

result

of

continuing

changes

and

improvements

during

the

pro¬

duction

run,

minor

difference

may

be

found

between

early

and

later

machines.

Refer

to

TEAC

TECHNICAL

INFORMATION

sheet

for

information

concerning

modifications.

-

3

-

3.

TOOLS

FOR

TESTING

AND

MAINTENANCE

A

minimum

of

the

following

tools

and

test

instruments

are

required

for

measuring

and

adjusting

to

obtain

optimum

performance.

Regular

maintenance

tools

will

be

adequate

for

those

not

listed

here.

If

any

test

instrument

listed

here

is

not

available,

a

close

equivalent

can

be

used.

SPRING

SCALE

.

0^4

kg

(CK8

lbs),

0V300

g

(O'VLO

ozs)

FLUTTER

METER

.

Meguro

Denpa

Co.,

Model

MK665B

(preferred)

or

Sentinal

Co.,

Model

FL-3D-1.

DIGITAL

COUNTER

.

Range

-

0

Hz^lOO

kHz

BANDPASS

FILTER.TEAC

Model

M-206A

(1

kHz)

VTVM.

Hewlett-Packard

Co.,

Model

4302B

OSCILLOSCOPE

.

.

General

purpose

BLANK

TAPE

.

TEAC

YTT-8013

and

YTT-8003

TEAC

TEST

TAPE.

Refer

to

the

next

page

EMPTY

REEL

.

TEAC

RE-702

(2"

hub)

and

RE-701

(4"

hub)

RE-1002

10-1/2"

reel

TEAC

TEST

SET*.M-826A

*

Use

of

the

TEAC

M-826A

Test

Set

is

recommended.

This

set

incorporates

an

AC

VTVM,

Audio

Oscillator,

Channel

Selecting

switch.

Variable

Atte¬

nuator,

Monitor

Speaker

and

Cables.

TEAC

M-826A

measures

the

EMS

value

of

the

Voltage

(0

dB

=

0.775V).

Characteristics

of

this

Test

Set

are

similar

to

the

standard

VU-meter.

Fig.

3-3

Spring

Scale

-4

4.

TEAC

TEST

TAPE

-VTT

SERIES

-

-

PLAYBACK

ONLY

-

TEAC-YTT

Series

Test

Tapes

are

designed

for

aligning

and

checking

the

playback

system

performance

of

any

tape

recorder.

They

have

been

manufactured

to

be

within

close

tolerance

to

the

NAB

Stand¬

ard,

and

the

recorded

signal

format

has

been

arranged

for

maximum

convenience

during

test

procedures.

YTT-l002/1003/1004

(FOR

PLAYBACK

ALIGNMENT)

TYPE

YTT-l

002

YTT-l

003

YTT-l

004

REMARKS

TITLE

PLAYBACK

ALIGNMENT

TAPE

WIDTH

1/4

INCH

BASE

1

MIL

1

MIL

1-1/2

MIL

TAPE

SPEED(ips)

3-3/4

7-1/2

15

Accuracy:

0.2%

Wow

and

Flutter:

0.1%(WRMS)

RECORD

TRACK

FULL

TRACK

Azimuth

Angle

Tolerance:

90°±1.5

*

RECORDING

STANDARD

NAB

CHARACTER¬

ISTICS

TIME

CONSTANT

(vs)

3180+90

3180+50

3180+50

TOLER¬

ANCE

WITHIN

0.5dB

31.5-4KHz

31.5-lOKHz

31.5-16KHz

WITHIN

1

dB

8K-14KHZ

12.5KHz-20KHz

18K-22KHZ

SECTION

FREQUENCY

(Hz)

USE

YTT-l002

YTT-l003

YTT-l004

1

400

400

400

*

OdB

30s

Operating

Reference

Level

Calibration

2

7,500

15,000

15,000

-lOdB

60s

Azimuth

Alignment

400

400

400

RECORDED

SIGNAL

3

14,000

12,000

10,000

8,000

6,300

4,000

2,000

1,000

500

250

125

80

63

40

31.5

20,000

18,000

16,000

12,000

10,000

6,000

4,000

2,000

1,000

500

250

125

80

63

40

31.5

22,000

20,000

18,000

16.000

12,500

10,000

6.300

4,000

2,000

1,000

500

250

125

80

63

40

31.5

15s

each

Frequency

Response

Check

*

OdB

recording

level

is

6dB

below

the

3%

T.H.D.

level

YTT-2002/2003/2004

(FOR

TAPE

SPEED

AND

WOW-FLUTTER

TESTING)

TYPE

YTT-2002

YTT-2003

YTT-2004

REMARKS

TITLE

TAPE

SPEED

AND

FLUTTER

TSET

TAPE

WIDTH

1/4

INCH

BASE

1

MIL

1

MIL

1-1/2

MIL

TAPE

SPEED(ips)

3-3/4

7-1/2

15

WOW

AND

FLUTTER

'

0.07%

0.05%

0.03%

Weighted

RMS

RECORDED

WIDTH

FULL

TRACK

RECORDED

SIGNAL

FREQUENCY

3,000Hz

LEVEL

-5dB

OdB:

Operating

Reference

Level

TIME

7

MINUTES

Since

these

tapes

will

be

your

own

reference

standard,

care

should

be

exercised,

in

handling

and

storage,

not

to

expose

them

to

any

magnetic

flux

which

might

deteriorate

or

completely

destroy

the

recorded

signals.

High

temperature

and

humidity

are

also

harmful

to

the

tape.

-

5

-

5.

TAPE

TRANSPORT

PARTS

LOCATION

Right-

Reel

Motor

Brake

Solenoid

—

Capstan

Solenoid

Flywheel

-

Control

—

PC.Board

Fuse

Holder

Left

Reel

Motor

—

Brake

Solenoid

(

-Cl

6

—

Freq.

Selector

SW

50Hz^60Hz

Fig.

5-1

Tape

Transport

Parts

Location

NOTE

For

ordering

parts,

refer

to

the

exploded

view

of

the

PARTS

LIST.

An

accompanying

listing

provides

the

correct

part

numbers.

-

6

-

Fig.

6-1

Rear

Panel

and

Bottom

Plate

Fig.

6-2

Wood

Sides

Most

amplifier

checks

and

adjustments

can

be

made

from

the

bottom

with

the

plate

removed.

These

adjustments

should

be

performed

by

experienced

technicians,

and

then

only

when

going

through

the

complete

test

and

check

pro¬

cedures

on

the

unit

which

is

being

tested.

HEAD

ASSEMBLY

REPLACEMENT

-

-

To

change

the

head

assembly

as

a

unit,

remove

the

4

mounting

screws.

Note

the

positions

of

the

wires

on

the

circuit

board

before

unsoldering.

Solder

wires

of

the

new

assembly

in

ex¬

actly

the

same

positions.

Refer

to

Fig.

8-3

Head

Wiring

Section.

Fig.

6-3

Head

Assy

Removal

REMOVAL

OF

CAPSTAN

MOTOR

1.

Remove

the

3

screws

holding

the

capstan

motor.

2.

Unsolder

the

6

wires

connecting

the

capstan

motor.

3.

Remove

the

4

screws

holding

the

capstan

motor.

Watch

for

the

Rubber

Cushions.

4.

Loosen

the

2

set

screws

(hex

head)

in

pulley

and

lift

off

pulley.

-

NOTE

-

Clean

the

drive

belt

with

TZ-261B

and

the

motor

pulley

and

capstan

flywheel

with

TZ-261A.

Be

sure

to

note

the

color

code

of

the

wires

so

you

can

replace

them

correctly.

Fig.

6-4

Capstan

Motor

Removal

REMOVAL

OF

CAPSTAN

ASSEMBLY

-

1.

Unscrew

capstan

cover

(front

panel).

2.

Remove

2

screws

from

rear

bracket,

allow

bracket

to

drop

toward

floor

of

case.

3.

Remove

capstan

belt.

4.

Loosen

2

screws

in

capstan

ass'y

flywheel.

Remove

flywheel.

5.

Remove

3

screws

in

capstan

ass'y.

6.

Gently

move

capstan

ass'y

up

and

down

until

it

slides

out

of

panel.

Fig.

6-5

Capstan

Assy

Removal

-

8

-