Teac R-H500 Manuale utente

SERVICE

MANUAL

R-H500

'NOTES-~———-

@

PC

boards

shown

are

viewed

from

paris

side.

@

The

parts

with

no

reference

number

or

no

parts

number

in

the

exploded

views

are

not

supplied.

|

@

As

regards

the

resistors

and

capacitors,

refer

to

the

cir-

cuit

diagrams

contained

in

this

manual.

@

A\

Parts

marked

with

this

sign

are

safety

critical

compo-

nents.

They

must

be

replaced

with

identical

components-

refer

to

the

appropriate

parts

list

and

ensure

exact

replace-

ment.

|

@

Parts

of

|

]

mark

can

be

used

only

with

the

version

desig-

nated.

[DM]:

JAPAN

[E]:

EUROPE

Cassette

Deck

CONTENTS

_

SPECIFICATIONS

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ELECTRICAL

PARTS

LIST

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99

Specifications

DECK

(for

recording/playing)

@sneral

@

Track

system

:

4

track,

@

Power

consumption

:9W[DM]

2-channel

stereo

© )

:

12W

[EUR]

@

Recording

system

:

AC

bias

@

Power

requirements

:100V,

50Hz[DM]

@

Erasing

system

:

AC

erasing

|

:

230V,

50Hz[EUR]

@

Tape

speed

:

4.8cm/sec

|

@

Dimension

(WXHxD):

285

X

101

X

304mm

@

Motor

:

DC

motor

@

Weihgt

:4.1Kg

@

Ferquency

response

Normal

:

40~14,000Hz

CrO2

:

40~15,000Hz

Standard

accessories

Metal

+

40~16,000Hz

Audio

signal

connection

cable

2

@

FF

and

REW

time

:

120

seconds

Remote

control

connection

cable:

1

(C-60

cassette

tape)

-@

Wow/Flutter

10.15%

(JIS,

WRMS)

@

S/Nratio

_ |

Dolby

NR

OFF

:

55dB

(CCIR/ARM)

~

Dolby

B

NR ON

:

65dB

(CCIR/ARM)

Dolby

CNRON

|.

_—_:

75dB

(CCIR/ARM)

@

Input

sensitivity

/

Impedance

Line

:

9OmV

/

35Kohms

|

@®

Output

level

/

Impedance

|

*

Improvements

may

result

in

specification

or

Line

:

548mV

/

1Kohms

feature

changes

without

notice.

2

—eeeecmmemme

SERVICE

MANUAL

_

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3

ae

ere

condition

|

Test

hap.

peeresenl

|

i

eed

NR

position:

OFF

¢

Head

azimuth

(10KHz,

10cB):

MTT-114N

_Make

sure

heads

are

clean.

_«

Tape

speed

(3KHz,

-10dB):

MTT-111N

_«

Make

sure

capstan

and

pressure,

roller

@

are

«

Playback

frequency

‘response

|

MTT-

257H

clean.

-

.

aap

a

dees

|

(125KHz,

TKHz,

10KHz,

»-T0dB)

Measuring

instruments

an

.

Playback

gain:

|

MTT-150_

«

EVM

(Electronic

Voltmeter)~

a

«

Blank

tape

@

Oscilloscope

_.

=

a3

-_

Normal

blank

tape:

MTT-5511

«

Frequency

counter

a

CrOz

back

tape:

MTT-55611

-

¢

AF

Oscillator

Metal

back

tape:

MTT-557

1

|

«

DC

Voltmeter

_©

ATT

(Attenuator.

or

Audio

Generator)

—

Resistor

(eobonigy

HEAD

AZIMUTH

ADJUSTMENT

1.

Test

equipment.

connections

are.

shown

in.

fig.

1.

2.

Playback

the

head:

Azimuth

test

tape

and

regulate

the

anal

adjust

screw

so

that

the

outputs

of

L-ch

and:

R-ch

are

maxi-

mized.

(When

the

adjusting

positions

are

differene

with

L-ch

and

R-ch

find

a

position

Where

the

outputs

of

L-ch

and

R-ch

are

balanced

and

then

make

the

adjustment.)

LINE

OUT

phase

‘deflection.

4.

After

the

a

locaiaits

apply

screw

lock

to

ae

acer

adjusting

value.

°

ayues

gees

|

a

Azimuth

screw(REV)

screw(FOR)

TAPE

SPEED

ADJUSTMENT

1.

Test

equipment

connections

are

shown

in

fig.

2.

Playback

the

middle

part

of

the

test

tape.

_

VR84

.

3,000HzZ

+

30HZ

aa

chassis,

|

»

“Digital

frequency

|

counter

!

PLAYBACK

GAIN

ADJUSTMENT

Salis

Test

equipment.

connections

aré

‘shown

in

fig.

3.

2.

Playback

the

playback

gain

test

tape

(MTT-150).

3.

Adjust

Pee

gain.

Adjustment

Point

-|

DECK

.

Standard.

Value

LINE

OUT

“(Fig

3)

_—mt——____-—,

SERVICE

MANUAL

PLAYBCK

FREQUENCY.

RESPONSE”

|.

-4.

Test

equipment

connections

are

shown

in

fig.

A

7

2.

Playback

the

playback

frequency

response

test

eae

3.

Check

shown

in

a

5

for

both

L-ch

and

R-Ch.

sscccscee

I

Usk

erik

a

|

ies

AOKHZ

12.5KH2

BIAS

FREQUENCY

ADJUSTMENT

4.

Test

equipment

connections

are

shown

in

fig.

6.

:

2.

Load

a

CrOz

blank

test

tape.

gh

hassis

-)

..

pT

a

3.

Press

the

record

and

pause

button.

7

Le

4,

Adjusts.T501

for.

105iKHz

frequency

counter

reading.

;

Sere

a

eT

“Dai

requency

cose

ioe

AL

ates

cee.

OG

Co

ERTL

OVERALL

GAIN

ADJUSTMENT

.

SP

utara

oa

ee

ta

et

gett

a

UNE

OUT

ee

AF

oscillator

1.

Test

equipment

connections

are

shown

i

in

n

fig.

|

ee

ere:

2.

Insert

the

normal

reference

blank

tape.”

ge

3.

Place

UNIT

into.

record

mode.

.

-

4,

Supply

@

1KHz

signal

through

J

ATT

(-

40dB)

fi

from

AF

oscillator.

tolinein.

..

|

.

Adjust

ATT

until

monitor

level

at

TP31

(L-ch)

or

TP32

(F-ch)

becomes

180mvV.

.

Playback

recorded

tape

and

make

sure

that

the

output

level

at

TP31

(L-ch)

or

TP32

(R-ch).

becomes

180mV.

|

.

ff

measured

value

is

not

180mvV,

adjust

it

by

using

VR31

(L-

CH)

or

VR32

(R-CH).

.

Repeat

from

step

(2).

|

OVERALL

FREQUENCY

RESPONSE

1.

Set

a

normal

blank

tape

(MTT-5511)

and

record

by

apply

sig-

nal

(100Hz,

1KHz,

10KHz)

through

ATT-from

AF

oscillator

to

lins

in

(Line

out

Level:

33mV).

:

OSCILLOSCOPE

.

Playback

the

signal

recorded

in

step

1,

and

check

that

the

Af.gswilator

‘UNE

IN

UNE

OUT

|

level

of

each

output

frequency

in

within

the

range

shown

in

_S00ohmn

|

fig.

8

in

comparison

with

the

reference

frequency

(1KHz).

wey

Ot

.

If it

is

not

within

the

standard

range

adjust

the

bias

current

by

using

VR51

(L-CH)

or

VR52

(R-

CH)

sO

>

that

the

frequency

level

is

within:the’standard.

@

Level

up

in

high

frequency

range

..

.

Increase

the

bias

cur-

rent.

e@

Level!

down

in

high

fsuueney.

ange:

Dectanee

the

bias

current.

=

4.

After

that;

increase.

the

signal

meorded

on

CrO2

blank

tape

|

(MTT-5561)

and

metal

blank

tape

(MTT-5571)

up

to

12KHz

and

adjust

in

the

same

way

as

mentioned

above

and

check

that

frequency

level

is

within

the

range

shown

in

Fig.

8.

63Hz

125Hz

10KHz

12.5KHz

SERVICE

MANUAL

Pe

:

~~

VR31

VR32

IPt

s

MICRO-COMPUTER'S

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FUNCTION

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21~24

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digit

select

output.for

indication.

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:

i

+5V

Power

supply

terminal

of

this

IC.

Key

scan

output.

System

reset

pulse

input.

Timer

control

Mode.

To

be

grounded.

Key

scan

input.

To

be

grounded.

Meter

L-ch

|

A/D

Convertor

input

for

level

meter

indication.

|

A/D

Convertor

input

for

level

meter

indication.

29

+5V

Power

supply

terminal

of

this

!IC.

:

30

“AVref

Reference

voltage

input

terminal.

‘GND

NO

|]

No

~I

|

O1

OO

—_

To

be

grounded.

w

NO

oN)

to

To

be

grounded.

|

34

|

Crystal

element

connecting

terminal.

REC

control

Mode

(L

=

ON)

Rec

mute

control

Mode

(H

=

ON)

&

©)

_

37

38

40

44

42

LINE

MUTE

Line

mute

contro!

Mode

{H

=

ON)

Dolby

C

Dolby

C

control

Mode

(L

=

ON)

Dolby

B

Doiby

B

contro!

Mode

(L

=

ON)

LINE

/

PB

LINE

/

PB

control

Mide

.

~

Power

control

Mode

(H=ON)

~~~

To

be

grounded.

T.P.S

data

input.

_

Halt

iC

data

input.

~

Remocon

IN

Remocon

datainput.

|

‘48

To

be

grounded.

Remocon

data

output.

Ciose

loading

Motor

control

(H

=.ON)

#51

open

loading

Motor

control

(H

=

ON)

52

+5V

power

supply

terminal

of

this

IC.

53

Loading

close

detector

sw

input

(L

=

ON).

—

_

Loading

open

detector

sw

input

(L

=

ON).

Rec

(Reverse)

SW

detector

input.

Mode

sw

detector

input.

57

_

TAPE

sw

detector

input.

Motor

control

output

(H

=

ON)

Solenoid

control

output

(H

=

ON)

Rec

(torward)

sw

detector

input.

61~70

Seg1~Seg10

Fip

segment

contro]

output.

71

(-24V)

Negative

power

supply

input

terminal

for

fip

blanking.

72~77

Fip

segment

control

output.

| |

.

i

Go

ND

T.P.S

pf

J

SERVICE

MANUAL

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PATH

Saal

ie

—e

28

ee

ee,

e-—

8

5

«*

IMPORTANT

SAFETY

NOTICE:

COMPONENTS

IDENTIFIED

BY

A

MARK

HAVE

SPECIAL

CHARACTERISTICS,

IMPORTANT

FOR

SAFETY.

WHEN

REPLACING

ANY

OF

THESE

COMPONENTS

USE

ONLY

MANUFACTURER'S

SPECIFIED

PARTS.

+e

THE

UNIT

OF

RESISTANCE

IS

OHM

(2)

-BNBI

K=1000

OHM,

M=1000

KOHM

se

THE

UNIT

OF

CAPACITANCE

IS

MICROFARAD

(uF).

P2i0~*

uF

¢e

THIS

SCHEMATIC

DIAGRAM

MAY

BE

MODIFIED

AT

ANY

TIME

WITH

THE

IMPROVEMENT

OF

PERFORMANCE.

14

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