Teac V-7000 Manuale utente

TEAC.

SERVICE

MANUAL

-7000,e./

V-5000

Stereo

Cassette

Deck

Remote

Control

Unit

RC-394(V-7000)

,

RC-393(

V-5000)

*Dolby

noise

reduction

and

HX

PRO

headroom

extension

manufactured

under

license

from

Dolby

Laboratories

Licensing

Corporation.

HX

PRO

originated

by

Bang

and

Olufsen.

“Dolby”,

the

double-D

symbol

and

“HX

PRO”

are

trademarks

of

Dolby

Laboratories

Licensing

Corpora-

tion.

*PILE-J

4

RZUFDT

SLY

RUAXIONAY

BIU-L

TLIAFVVaVIFEILE—-SHRBbU-ASTRY

VPUIID—-RL—-VarMOOEMiBIC

BIS RRS

NMTOES,

HXTOND

AO

PLU

KAILIE

LOSE

ty.

x

KILE—

j,

FDUDISRU'AX

FOS

RLE-S

RSRU-ASTRY

YL

II—KL—-Tarv

OBR

RCT.

Effective

:

December,

1990

940705

5704050900

_

——veTo00/v-5000

|

1

SPECIFICATIONS

Track

System:

4-Track,

2-Channel

Stereo

Heads:

3:

1

Erase,

1

Record

and

1

Playback

(combination)

Type

of

Tape:

Cassette

tape

C-60

and

C-90

(Philips

type)

Tape

Speed:

4.8

cm/sec.

(1-7/8

ips)

Motors:

4

V-7000

1

brushless

quartz

locked

PLL

servo

DC

motor

(for

capstan

drive)

1

DC

motor

(for

reel

drive)

1

DC

motor

(for

mechanism

drive)

1

DC

motor

(for

power

loading)

v-5000

1

DC

servo

motor

(for

capstan

drive)

1

DC

motor

(for

reel

drive)

1

DC

motor

(for

mechanism

drive)

1

DC

motor

(for

power

loading)

Wow

and

Flutter

(WRMS)

0.022

%

(V-7000),

0.027

%

(V-5000)

Frequency

Response

(Overall):

-20

dB

15

—

21,000

Hz

+3

dB

Metal

Tape

15

—

20,000

Hz

+3

dB

CrO,

Tape

15

—

18,000

Hz

+3 dB

Normal

Tape

Signal-to-Noise

Ratio

(Overall)

60

dB

(NR

OFF

3%

THD

Level,

Weighted)

70

dB

(Dolby

B

In,

over

5

kHz),

80

dB

(Dolby

C

In,

over

1

kHz)

Fast

Winding

Time:

Approximately

85

se-

conds

for

C-60

Inputs:

Line:

60

mV,

50k

ohms

CD

Direct:

110

mV,

50k

ohms

Outputs:

Line:

0.44

V

for

load

impedance

of

50k

ohms

or

more

Headphones:

2

mW

(max.)

8

ohms

Power

Requirements:

100/120/220/240

V

AC,

50/60

Hz

(General

export

models)

120

V

AC,

60

Hz

(U.S.A./Canada)

220

V

AC,

50

Hz

(Europe)

240

V

AC,

50

Hz

(U.K./Australia)

Power

Consumption:

20

W

(V-7000),

18

W

(V-5000)

Dimensions

(W

x

H

x

D)

471

x

149

x

355

mm

(including

side

panels)

(V-7000)

(18-9/16""

x

5-7/8"

x

14")

435

x

149

x

355

mm

(V-5000)

(17-1/8"

x

5-7/8"

x

14")

Weight:

9

kg

(19.9

Ibs.)

(including

side

panels)

(V-7000)

8

kg

(17.7

Ibs.)

(V-5000)

Standard

Accessories:

RC-394

(V-7000),

RC-393

(V-5000),

Batteries

(SUM-3,

“AA”,

“RG”

type)

x

2,

Input-output

connection

cords,

Side

panels

(mounted)

V-7000

only.

io”

e

Specifications

were

determined

using

metal

tape

except

where

noted.

e

Improvements

may

result

in

specifications

or

features

changing

without

notice.

e

Photos

and

illustrations

may

differ

slightly

from

production

models.

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<V-5000>

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(W.RMS),

+0.048%

(W.Peak

EIAJ)

15Hz~21,000Hz+3dB,

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435

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PELERMACAOSBUIALY

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V-7000/V-5000

2

REMOVAL

OF

EXTERNAL

COMPONENTS

ARBADALA

mber-order

SSMCAHLTR

At

Disassemble

in

nu

|

V-7000/V-5000

3

PARTS

LOCATION

LAC

Power

transformer

TRANS

PCB

MAIN

PCB

Voltage

selector

(General

export

models)

JACK

PCB

Cap

motor

Reel

motor

DD

motor

(V-5000)

(V-7000)

CONTROL

PCB

PAD

motor

PHONE

PCB

DISPLAY

L

PCB

.

DISPLAY

R

PCB

-V-7000/V-5000

4

MECHANICAL

ADJUSTMENTS

AND

CHECKS

MMA

MM

&

TER

4-1

TAPE

SPEED

(V—5000

only)

4-1

F-7+

AE—F

(V—5000

only)

1.

Connect

a

frequency

counter

to

the

deck

as

shown

in

1.

B4-1OLSRARRADY

FY

—-SBRTS.

Fig.

4-1.

2.

BREAN,

WIDBV

+

-L

VAT

VSTS,

2.

Simply

press

POWER

switch

to

ON

to

rotate

the

motor,

3.7

AKF—T7

MTT

—111

(8kHz)

HRMHOREH

CHET

4,

then

continue

the

motor

retain

for

approx.

lminute

for

4,

FRBAAA.

3,000~3,010Hz

CRS

KG,

Fig.

4-2RTRB

warm-up.

VRE

A.

3.

AS

soon

as

the

warm-up

finishes,

load

a

TEAC

MTT

5.

SOD

OBROE

CHEL,

HERES

LURHLHRS

~111

test

tape

with

a

3,000Hz

test

tone

and

play

the

Bo

beginning

of

the

test

tape.

TREE

:

3,000Hz

+

30Hz

(V

—

7000)

4,

Adjust

the

variable

resistor

(Fig.

4-2)

to

get

the

3,000Hz

+

60Hz

(V

—

5000)

adjustment

value

of

3,000Hz

to

3,010Hz

AEG

:

15Hz

LA

(Vv

—

7000)

5.

In

play

mode,

check

that

the

following

figures

are

60Hz

LAA

(V

—

5000)

obtained

at

the

beginning

and

at

the

end

of

the

tape.

Speed

deviation

:

3,000Hz

+

30Hz

(V

—

7000)

3,000Hz

+

60Hz

(V

—

5000)

Speed

drifting:

with

in

15Hz

(V

—

7000)

with

in

60Hz

(V

—

5000)

Frequency

Counter

W

id

Flutter

Me

ter

REX

Capstan

motor

DECK

under

TEST

Fig.

4-2

(R)

OUTPUT

Fig.

4-1

4-2

WOW

AND

FLUTTER

(PLAYBACK

METHOD)

4-2°99°D599-

Note

:

These

measurements

should

made

at

the

beginning,

(HAE)

middle,

and

the

end

of

the

tape.

HE:

F-TORMD,

HH,

BRO

CHESTS.

1.

Connect

a

wow

and

flutter

meter

to

the

deck

as

shown

in

Fig.

4-1.

LB4-1OKGEID*

7GVI—-A-F-EEMIS.

2.

Load

and

play

a

TEAC

MTT-111

test

tape.

2FARF-TFMIT-1LABETS,

3.

Check

that

the

readings

on

the

wow

and

flutter

meter

3.799

*

7ayvI

MER

FORBAIK

AS

CESS.

are

as

follows.

BUS

:

0.05

%

WRMS

(V-7000)

Specifications

:

0.05

%

WRMS

(V-7000)

0.065

%

WRMS

(V-5000)

0.065

%

WRMS

(V-5000)

eisai

V-7000/V-5000

4-3

REEL

TORQUE

4-3

V—JIDEWD

1.

Load

the

cassette

torque

on

the

deck

and

read

the

LAty

PARI

A-F-K

ESE

FROMAN

CHS

pointer

indication

on

the

dial

scale

for

each

tape

CESHBTS.

transport

operation.

The

measured

torque

should

be

FAVT

YT

bhN7:

35~60g

*

cm

within

the

following

specified

values.

WyIFYVYavbhny:

4~10g+cm

Specifications

:

BRD

/BRL

IV?

:

70~160g

*

cm

Take~up:

35~60g°*cm

(0.486

~0.833

oz.-inch)

Supply

:

4~10g*cm

(0.066~0.139

oz.-inch)

F.

/REW

:

70~160g

*

cm

(0.972~2.22

oz.-inch)

4-4

VOLTAGE

CONVERSION

(General

Export

Models

only)

1,

ALWAYS

DISCONNECT

THE

POWER

LINE

CORD

BEFORE

MAKING

THESE

ADJUSTMENTS

!

2.

Locate

the

voltage

selector

on

the

rear

panel.

3.

Using

a

require

screwdriver,

turn

the

selector

until

the

numerals

corresponding

to

the

voltage

requirements

of

your

area

appear.

Fig.

4-3

v-7000/V-5000

5

ELECTRICAL

CHECKS

AND

ADJUSTMENTS

PF

-~

TRO

&

BA

5-1

PRECAUTIONS

1,

Before

performing

adjustments

and

checks

clean

and

demagnetize

the

entire

tape

path.

.

Make

sure

the

deck

is

properly

set

for

the

voltage

in

your

locality.

.

In

general,

adjustments

and

checks

are

made

in

the

order

of

L

ch.

then

R

ch.

Double

REF.

Nos.

indicate

Lch/R

ch..

(Example

;

R51/R61)

.

O

dB

is

referenced

to

0.775V.

If

an

AC

voltmeter

that

references

OdB

to

1V

is

used,

appropriate

compensation

should

be

made.

.

The

AC

voltmeter

used

in

the

procedures

must

have

an

input

impedance

of

1M

ohms

or

more.

.

Note

the

“Deck

setting”

at

the

top

of

each

chart.

The

settings

apply

to

all

check

for

a

specific

chart

unless

explicitly

stated

otherwise.

.

Since

this

deck

has

an

automatic

tape

selector,

be

sure

to

use

test

tapes

that

have

tape

position

detecting

holes.

.

Input

terminals

and

measuring

points

at

each

step

are

the

same

as

otherwise

specified.

Oscillator

Distortion

Analyzer

Attenuator

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,

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1.

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Oscilloscope

AC

Voltmeter

1kHz

Filter

LINE

IN

OUTPUT

Fig.

5-1

Basic

test

setup

SAMEERA

~Siceeid

Saag”

|

V-7000/V-5000

5-2

ADJUSTMENT

LOCATIONS

ias(aPt

MAIN

PCB

U205

(7)

U105

R32

TN

R33

>)

~

TP

10

@e

BIAS

OSC

FREQUENCY

L104

Pin18

TP

20

STEP-UP

COIL

72

ioe

RECORD

LEVEL

R21

|[@

(omy

B®

R22

BIAS

SETTING

PLAYBACK

=

a

LEVEL

|)

wi02(TP)

@)

R12

2)

240kHz

R1[@

PEAK

LEVEL

fan

(7)

Ro7

@

@)

R17

fan

(7a

R26

@

R16

METER

LEVEL

Fig.5-2

Adjustment

points

J232(811

y-7000/V-5000

5-3

PLAYBACK

PERFORMANCE

FE

%

Deck

settings

TEAC

test

tapes

Mode

:

PLAY

MTT-

150

:

for

Dolby

level

calibration

AUTO

MONITOR

SW:

TAPE

MTT-

25702

:

for

playback

frequency

response

check

for

NORMAL

DOLBY

NR

SW

:

OUT

MTT-

35702

:

for

playback

frequency

response

check

for

METAL

and

CrO2

MPX

FILTER

SW

:

OUT

MTT-5511

:

For

S/N

check

for

120

7

sec

(NORMAL)

MTT-5571

:

For

S/N

check

for

70

~

sec

(METAL)

MTT-

15000

:

For

S/N

check

for

DOLBY

NR

B,C

INPUT

SIGNAL

aoe

MEASURING

POINT.

REMARKS

ae

(or

CHECK)

RESULT

ae

Heke

sig

WSEAS

;

Azimuth

screws

MTT-

25702

of

RP

head

OUTPUT

(L/R)

or

s

»

ko?

s|

Maximum

output

at

L

&

MTT-35702

.

ater

“1

R-ch’s,

(10kHz)

Fig.

5-4

L-R&ch#

BAWD

.

Playback

4

DOLBY

;

.

;

:

i

ae

x

MAIN

PCB

U102

;

pinl3/pinl8

:

3

eae

pil

Connection

: :

MTT-

150

R1L/R21

—6dB

(388mV)

LAID

yb

OUTPUT

(L/R)

:

.

Playback

_

aes

Connection

:

Fig.

MTT-

150

*

eABaV

-6X0mV)

mb

Phase

:

with

45°

Sith

:

45°

DAA

Meter

level

.

PEAK

LEVEL

meter

(L/R)

ool

ae

|

Same

as

above

MTT-

150

yas

ee

—1dB

lit

(

OO

mark)

Ab

~1dBR

(

OO

-7)

ie

Connection

:

;

ie

bad

reguetey

MTT-

25702

OUTPUT

(L//R)

response

Same

as

above

[ff

_

Check

eee

MTT-35702

Standerd

HK

MTT-5511

MTT-5571

OUTPUT

(LYR)

:

Same

as

above

[fi

Playback:

the

Check

S/N

46dB

min.

(120u)

leader

tape.

474B

min.

(

70u)

portion.

.

Y—-¥—F—-

TRE

RE

.

Playback

OUTPUT

(L/R)

SIN

ratio

Amount

of

variation

in

S/N

with

FB

S/N

Et

respect

to

the

S/N

value

when

the

MTT

—

15000

signal

is

playd

back

wit

DOLBY

NR

OFF.

Same

as

above

[ali

2

MTT

—

15000

%

DOLBY

NR

OFF

DOLBY

NR:

OFF»B>c

|

MTT-

15000

neee

LIED

S/

NBIC

3

S/N

SEALE

;

DOLBY

NR

B

:

8.5dB

or

mote

DOLBY

NR

C

:

17dB

or

mor

-2dB

(615

mV)

is

reference

lewL

AME

LN

VIE

—

2dB

(

615

mV)

*

Fig.

5-3

~

Fig.

5-9

;

See

page

13.

10

Teac V-7000 Manuale utente

Manuali Lettore di cassette popolari di altre marche