Teac X-300r User manual

TEAC

06

fe

SERVICE

MANUAL

X300R/X300

Stereo

Tape

Deck

X-300R(SGABAE

FUT.

Effective:

September

1983,

A-30057

5704018200

X300R/X300

|

1

SPECIFICATIONS

AND

SERVICE

DATA

SPECIFICATIONS

Track

system

4-track

two-channel

stereo

Head

system

3

heads:

erase,

record,

playback

Reel

size

7"

and

5”

Tape

speed

19

cm/s

(7-1/2

ips)

and

9.5

cm/s

(3-3/4

ips)

Inputs

(level

and

impedance)

Mic:

Specified

input

level:

Min.

input

level:

Specified

input

level:

Min.

input

level:

Outputs

(Jevel

and

impedance)

OUTPUT:

Specified

output

level:

—5

dB

(436

mV)/10

kohms

Max.

output

level:

+1

dB

(0.869

V)

PHONES:

Specified

output

level:

—24

dB

(48.9

mV)/8

ohms

Playback

equalization

“LH”

tape:

19

cm/s:

3,180

us

+

50

us

(NAB)

9.5

cm/s:

3,180

us

+

90

us

(NAB)

“EE”

tape:

19

cm/s:

3,180

us

+

35

us

9.5

cm/s:

3,180

us

+

50

us

—60

dB

(0.775

mV)/10

kohms

—70

dB

(245

nV)

—12

dB

(195

mV}/50

kohms

—22

dB

(61.5

mV)

LINE

IN:

Motors

1

DC

servo

capstan

motor

2

Induction

reel

motors

Bias

frequency

100

kHz

Operating

position

Vertical,

horizontal

Power

requirements

100/120/220/240

V

AC,

50/60

Hz,

85

W

(General

export

model}

120

V

AC,

60

Hz,

70

W

(USA/Canada)

220

V

AC,

50

Hz,

85

W

(Europe)

240

V

AC,

50

Hz,

85

W

(UK/AUS)

100

V

AC,

50/60

Hz,

70

W

(Japan)

Weight

15

kg

(33-1/16

Ibs)

net

(X-300R)

14

kg

(30-14/16

Ibs)

net

(X-300)

Dimensions

9-1/8"

(231mm)

tO}

q

©

\

—

\

/

KH

os"

35

jicesing

16

-

1/8"

(410mm)

Fig.

1-4

CAUTION

A

Parts

marked

with

this

sign

are

safety

critical

components.

they

must

always

be

replaced

with

identical

components

—

refer

to

the

appropriate

parts

list

and

ensure

exact

re-

placement.

SERVICE

DATA

MECHANICAL

Tape

speed

deviation

3,000

Hz

+30

Hz

Tape

speed

drift

20

Hz

Wow

and

flutter

Playback:

0.06%

(WRMS),

0.12%

(RMS)

at

19

cm/s

0.10%

(WRMS),

0.15%

(RMS)

at

9.5

cm/s

Record/playback:

0.08%

(WRMS)

at

19

cm/s

0.15%

(WRMS)

at

9.5

cm/s

Pinch

roller

pressure

1.5

to

1.7

kg

(3.31

to

3.75

Ibs)

Reel

torque

(play

mode)

Take-up:

Back

tension:

Brake

torque

Forward

direction:

1200

to

1400

g-cm

(16.7

to

19.4

oz-inch)

Reverse

direction:

|

500

to

700

g-cm

(6.94

to

9.72

oz-inch)

Left/right

deviation:

150

g-cm

(2.09

oz-inch)

Fast

winding

time

140

seconds

or

less

for

550

m(

1800

feet)

330

to

470

g-cm

(4.58

to

6.53

oz-inch}

220

to

280

g-cm

(3.06

to

3.89

oz-inch)

ELECTRICAL

Frequency

response

See

Figs.

3-6

to.

3-9.

Signal-to-noise

ratio

Playback

[wet

[ase]

Erase

efficiency

70

dB

min,

at

1

kHz

(measured

with

input

10

dB

higher

than

the

specified

input

level)

Channel

separation

50

dB

min.

at

1

kHz

Adjacent

track

crosstalk

40

dB

min.

at

125

Hz

Total

harmonic

distortion

1.0%

or

less

at

1

kHz

with

“UH

(I1)"

tape

1.5%

or

less

at

1

kHz

with

‘E

E”

tape

NOTES:

1.

Improvements

may

result

in

changes

in

the

SPECIF

ICATIONS

AND

SERVICE

DATA.

2.

0B

is

referenced

to

0.775

V,

unless

otherwise

specfsed.

3.

Playback

performance

specifications

refer

to

opert#on

in

both

forward

and

reverse

play

modes.

BBL.

DUD

hRARIMIA

ING

—

VARS

TOOT

-

2s

eNO

ILD

FO

DUET,

BOM

OS

FAK

“Faw.

3.

AMPED

MAE

EDI

CH.

SURG

SEeE

ETT

1

Py

FeO

eA

UT

RaW.

*

|

X300R/X300

2

MECHANICAL

ADJUSTMENT

AND

CHECKS

2-1

CAPSTAN

THRUST

CLEARANCE

1,

There

must

be

a

clearance

of

0.1

to

0.3

mm

between

the

capstan

shaft

and

the

thrust

plate,

Check

to

see

that

the

clearance

is

within

this

range.

If

not,

loosen

the

two

screws

on

the

flywheel,

adjust

the

clearance,

and

retighten

the

screws,

0.1

~0.3

mm

Capstan

Shaft

Adjust

two

screws

hrust

Plate

eee

with

Allen

wrench

Fig.

2-1

2-2

SHUT-OFF

SWITCH

POSITION

1.

There

must

be

a

clearance

of

1

to

1.5

mm

between

the

cam

and

actuator(A)

when

the

microswitch

is

off,

and

0.5

mm

between

the

microswitch

and

actuator(B)

when

the

microswitch

is

on.

Check

to

see

that

the

clearance

is

within

these

values.

If

not,

adjust

as

necessary.

Microswitch

Adjust

Screw

Actuator

(B)

Actuator

(A)

Fig.

2-2

Adjust

Screw

2-3

BRAKE

MECHANISM

NOTE:

Be

sure

that

the

power

is

turned

off

prior

to

making

any

adjustments

to

the

brakes,

1.

Screw(A)

for

the

left

brake

(as

viewed

from

the

front)

must

be

adjusted

so

that

there

is

a

clearance

of

1

mm

between

lever(C)

and

lever(E).

Screw(A)

for

the

right

brake

must

then

be

adjusted

so

that

lever(B)

is

parallel

to

lever(C).

2.

Push

the

plunger

until

there

is

contact

at

(a);

i.e.,

until

the

clear-

ance

has

been

eliminated,

but

make

sure

that

the

plunger

is

not

pushed

so

strongly

that

the

levers

(E)

(C),

and

(B)

are

deflected

—

they

must

remain

in

a

horizontal

plane.

3.

Position

the

solenoid

housing,

while

the

plunger

is

pushed

as

des-

cribed

in

step

#2

above,

so

that

the

gap

at

(f)

(the

distance

be-

tween

the

leftmost

edge

of

the

plunger

and

the

leftmost

edge

of

the

solenoid

housing)

is

between

11

to

12

mm.

When

the

solenoid

housing

is

so

positioned,

the

plunger

should

be

able

to

be

deflect-

ed

between

1

to

2

mm

when

pushed

strongly.

Brake

Solenoid

Lever

(B)

(a)

Imm

Adjust

Solenoid

Position

Lever

(C)

-

a

(f)}=11~

12mm

PUSH

Plunger

Lever

(E)

Left

Reel

Table

Fig.

2-3

X300R/X:300

|

24

BRAKE

TORQUE

NOTE:

1.

2.

Before

making

any

brake

adjustments

or

measurements,

make

sure

the

power

is

off.

Mount

an

empty

7”

reel

onto

either

reel

table

and

attach

a

spring

scale

to

the

reel

with

a

string.

Smoothly

pull

the

scale

away

from

the

reel

under

test

and

note

the

torque

value

when

the

reading

on

the

scale

is

steady.

The

proper

torque

values

are

given

in

the

chart

below.

Follow

steps

1

and

2

for

each

measuring

condition;

i.e.,

(A)

through

(D)

in

Fig.

2-4.

_

\f

the

forward-direction

torque

is

not

correct,

change

the

hook-

ing

position

of

the

spring

hanger

(reference

(D)

in

Fig.

2-3)

for

the

corresponding

brake

requiring

adjustment.

If,

after

the

for-

ward-direction

torque

has

been

properly adjusted

and

the

reverse-

direction

torque

is

not

correct,

or

the

forward-direction

torque

is

still

not

correct,

check

to

see

if

the

brake

felt

pad

is

worn,

and

also

check

that

the

brake

mechanism

is

properly

aligned

as

ex-

plained

in

Section

2-3,

“Brake

Mechanism”.

If

necessary,

replace

the

entire

reel

table.

1200

—

1400

g-cm

(16.7

—

19.4

oz-inch)

500

—

700

g-cm

(6.94

—

9.72

02-inch)

150

g-cm

(2,09

02-inch)

Torque

calculating

formulas:

1.

Torque

(in

g-cm

or

02-inch)

=

Force

or

Weight

(in

g

or

0z)

x

Radius

(in

cm

or

inch)

2.

Conversion

of

g-cm

to

oz-inch:

g-cm

x

0.0139

=

oz-inch

Fig.

2-4

2-5

REEL

MOTOR

TORQUE

TAKE-UP

TORQUE

1,

Hold

the

right

tension

arm

up

using

a

rubber

band.

2.

Mount

an

empty

7”

reel

onto

the

right

(left)

reel

table,

and

attach

a

spring

scale

to

the

ree!

with

a

string.

3.

Place

the

deck

in

the

forward

(reverse)

play

mode.

4,

Allow

the

rotation

of

the

reel

to

slowly

pull

the

scale

toward

the

reel.

5.

Hold

the

spring

scale

with

enough

force

to

allowa

steady

reading.

6.

Measure

the

take-up

torque.

The

proper

values

are

given

in

the

chart

below.

7.

There

is

no

specially-provided

adjustment

for

take-up

torque,

so

if

correction

is

needed,

repair

or

replace

the

defective

part

and/

or

circuit.

*

X-300R

only

330

to

470

g-cm

(4.58

to

6.53

ozinch)

220

to

280

g-cm

(3.06

to

3.89

ozirch)

(B)

in

REV

(D)

in

FWD*

(A)

in

FWD

(C)

in

REV*

Take-up:

Back

tension:

NOTE:

For

torque

calculation,

refer

to

the

formulas

pr

avided

in

Fig,

2-4.

Fig.

2-5

BACK

TENSION

8.

9.

10.

11.

12,

Place

the

deck

in

reverse

(forward)

play

mode.

Using

a

steady,

smooth

motion,

pull

against

the

motor

torque

to

draw

the

scale

away

from

the

reel.

After

making

sure

that

the

reel

motion

is

smooth

(the

string

should

not

be

rubbing

against

the

reel

flanges),

note

the

value

in-

dicated

on

the

scale.

The

proper

values

are

given

in

Fig.

2-5.

if

necessary,

adjust

the

slider

of

resistor

(R802)

until

the

proper

torque

values

in

both

forward

and

reverse

play

modes

are

ob-

tained.

See

Fig.

2-6.

Resister

(R802)

Slider

Fig.

2-6

X300R/X300

2-6

PINCH

ROLLER

PRESSURE

1.

Hold

the

right

tension

arm

up

using

a

rubber

band,

string,

etc.

2.

Place

the

deck

in

the

forward

play

mode

without

threading

any

tape.

3.

Attach

a

spring

scale

to

the

pinch

roller

as

shown

in

Fig.

2-7,

4,

Pull

the

pinch

roller

away

from

the

capstan

shaft

(on

a

plane

in-

tersecting

the

center

of

the

capstan

shaft

and

the

pinch

roller)

until

the

capstan

shaft

and

the

pinch

roller

are

separated.

5.

Ease

pressure

on

the

scale

until

the

pinch

roller

just

begins

to

turn.

The

scale

should

then

read

1,5

kg

to

1.7

kg

(3.31

Ibs

to

3.75

Ibs).

6.

By

pressing

the

DIRECTION

switch,

change

play

mode

to

reverse

direction

and

measure

in

the

same

way

as

previously

described.

Specification

is

the

same

as

that

for

forward

play

mode,

Adjust

Screws

Pinch

Roller

Spring

Scale

Fig.

2-7

|

i

|

:

X300R/X300

2-7

REEL

TABLE

HEIGHT

1.

As

a

general

reference,

the

height

of

the

reel

table

should

rough-

ly

correspond

to

a

distance

of

38

mm

(1-7/16")

between

the

chassis

of

the

deck

and

the

rubber

mat

on

the

reel

table.

If

check-

ing

reveals

any

large

deviation

from

this

value,

loosen

the

two

ad-

justment

screws

on

the

reel

table,

adjust

the

height,

and

retight-

en

the

screws.

.

For

fine-adjustment,

check

that,

while

in

fast-forward

or

rewind

modes

starting

at

the

beginning

of

the

tape,

the

tape

does

not

touch

the

upper

or

ower

reel

flanges.

If

it

does,

fine-adjust

ac-

cordingly.

7

Standard

Empty

Reel

Table

LI

aS

IES,

Boe

aa

SR

BSS

ea

Fig.

2-8

TAPE

SPEED

NOTE:

Conduct

the

following

steps

in

both

forward

and

reverse

play

modes.

.

Connect

a

frequency

counter

to

either

OUTPUT

jack.

(See

Fig.

2-9).

.

Load

a

TEAC

YTT-2003

test

tape

containing

a

3000-Hz

test

tone,

and

set

the

SPEED

switch

to

HIGH

(19

cm/sec

or

7-1/2

ips).

.

Play

the

middle

of

the

test

tape

and

adjust

the

HIGH

speed

trim-

mer

resistor

until

the

frequency

counter

indicates

a

reading

of

3000

Hz

(+5

Hz).

See

Fig.

2-10.

(CAUTION:

Use

an

insulated

screwdriver

to

prevent

shorting.)

.

Playing

the

tape

at

both

the

beginning

and

the

end,

check

that

‘the

tape

speed

does

not

vary

any

more

than

the

limits

prescribed

in

the

specifications,

so

that

there

is

never

a

total

deviation

of

more

than

+30

Hz

from

the

3000-Hz

test

tone,

nor

a

drift

of

more

than

20

Hz

at

any

given

time.

.

Usinga

TEAC

YTT-2002

test

tape,

repeat

steps

#3

and

#4

above

with

the

SPEED

switch

set

to

LOW

(9.5

cm/sec

or

3-3/4

ips).

In

step

#3,

the

speed

may

be

adjusted

for

the

proper

initial

setting

by

using

the

LOW

speed

trimmer

resistor.

DECK

wow

@

FLUTTER

METER

under

TEST

Trees

Fig.

2-9

°

High

Speed

°°

sq—EF.

Ds

o©

»

$j

C0

oo)

Motor

Servo

P.C.B.

®

000090990

Fig.

2-10

2-9

WOW

AND

FLUTTER

PLAYBACK

NOTE:

This

paragraph

applies

to

both

forward

and

reverse

play

modes.

1.

Connect

a

wow-and-flutter

meter

to

the

deck

as

shown

in

Fig.

2-9.

2.

Load

a

TEAC

YTT-2003

test

tape

to

check

the

wow

and

flutter

when

the

deck

is

set

to

HIGH

speed,

or

a

YTT-2002

test

tape

to

check

when

set

to

LOW

speed.

3.

Play

the

beginning

and end

of

the

respective

test

tape

for

each

speed

setting.

The

measured

wow

and

flutter

should

be

at

least

0.06%

(WRMS)

and

0.12%

(RMS)

for the

HIGH

speed

setting

and

at

least

0.10%

(WRMS)

and

0.15%

(RMS)

for

the

LOW

speed

setting.

OVERALL

4.

Load

TEAC

YTT-8013

test

tape

and

record

a

3000-Hz

signal

on

it

in

both

HIGH

and

LOW

speed

settings

and

at

te

beginning

and end

of

the

tape,

and

while

recording

the

signal,

sirnultaneous-

ly

monitor

the

signal

from

the

play

head

by

setting

the

MONI-

TOR

switch

to

the

TAPE

position

(raised

position).

5.

The

wow-and-flutter

meter

should

indicate

a

readiny

of

no

more

than

0.08%

(WRMS)

in

the

HIGH

speed

setting

aad

no

more

than

0.15%

(WRMS)

in

the

LOW

speed

setting.

g

2-

1.

10

HEAD

AND

TAPE

PATH

ALIGNMENT

By

visual

observation,

align

the

erase,

record,

and

playback

heads

so

that

the

proper

tilt

is

obtained

for

each.

Coarse-adjust

the

azimuth

of

the

erase,

record,

and

playback

heads

by

observing

each

without

a

tape

threaded.

Load

a

TEAC

YTT-8013

test

tape

and

play

it

in

the

forward

direc-

tion.

Fine-adjust

the

height

of

each

head

as

shown

in

Fig.

2-12.

When

adjusting,

make

sure

all

the

screws

are

turned

proportionately

50

that

the

tilt

and

azimuth

previously

adjusted

is

not

altered.

.

If

required,

coarse

adjust

any

head

requiring

tangency

correction.

X300

Playback

°

+

nd

o

€oees”

°

©

X300R

Erase

Record

Playback

te

||

5]

[S|

I

@

Azimuth

GE}

Height

and

tilt

Fig.

2-11

©

Tangency

Example

of

misalignment

TILT

The

head

surface

should

be

parallel

to

the

tape

guide

surface.

=

Fs

The

gap

of

the

head

core

should

be

perpen-

dicular

to

the

tape

path.

HEIGHT

(A)

Erase

head

The

upper

edge

of

the

upper

core

of

the

head

should

protrude

0.1

mm

above

the

upper

edge

of

the

tape.

(B)

Record

head,

Playback

head

(X-300)

The

brass-colored

spacer

of

the

head

should

mo

appear

about

as

thin

as

a

pencil

line

above

=

the

tape.

(C)

Playback

head

(X-300R)

The

distance

from

the

top

head

core

to

the

top

edge

of

the

tape

and

from

the

bottom

head

core

to

the

bottom

edge

of

the

tape

should

be

equal.

TANGENCY

ce

The

dotted

line

should

be

perpendicular

Fig.

2-12

Head

alignment

conditions

C

to

the

surface

of

the

tape.

f=

=I

|

_x%300R/%300

2-11

REVERSE

GUIDE

HEIGHT

(X-300R)

1.

Check,

and

if

necessary,

align

head

and

tape

path

mentioned

in

2-10.

2.

Thread

a

TEAC

YTT-8013

test

tape

on the

deck,

and

in

the

re-

verse

direction

run

the

tape

at

the

beginning

and

the

end

of

the

tape.

3.

Check

that

tape

moves

exactly

on

the

center

of

the

playback

head,

i.e.,

that

playback

head

height

(refer

to

Fig.

2-12)

is

also

maintained

in

reverse

play

mode,

4.

If

not,

loosen

the

set

screw

and

turn

the

reverse

guide

clockwise

or

counterclockwise

for

adjustment,

then

retighten

set

screw,

set

screw

Fig,

2-13

2-12

FREQUENCY

AND

VOLTAGE

CONVERSION

General

Export

Models

Only:

If

it

is

necessary

to

change

the

frequency

and

line

voltage

settings,

follow

the

instructions

below:

ALWAYS

DISCONNECT

THE

POWER

LINE

CORD

BEFORE

MAKING

THESE

ADJUSTMENTS.

1.

Remove

the

metal

housing*covering

the

top

and

sides

of

the

deck

by

unscrewing

the

three

screws

from

each

side.

2.

Locate

the

voltage

selector

on

the

right

(as

seen

from

the

front).

The

frequency

selectors

are

located

near

each

motor

as

illustrat-

ed.

VOLTAGE

CONVERSION:

3.

Turn

the

slotted

center

post

of

the

selector

with

a

crewdriver

or

coin

as

illustrated

until

the

proper

setting

is

obtained.

FREQUENCY

CONVERSION:

4,

For

each

reel

motor,

loosen

the

screws

on

the

pspective

fre-

quency

selector

bar

and

jumper

the

bar

to

the

trriinal

corre-

sponding

to

the

AC

line

frequency

of

your

area,

hes

retighten

the

screws.

5.

Replace

the

housing

and

retighten

the

screws.

*

Decks

in

some

areas

have

a

wooden

case

which

can

te

semoved

by

unscrewing

the

screws

on

the

bottom

(feet)

and

side;

X300R/X300

2-13

LUBRICATION

Qiling

is

needed

after

every

1,000

hours

of

operation

or

once

a

year

if

the

deck

is

used

infrequently.

TEAC

spindle

oil

(fram

TEAC

TZ-255

oil

kit),

Mobil

D.T.E.

Oil

Light,

and

similar

types

of

oil

are

recommended.

Lubrication

is

normally

not

necessary

except

at

the

points

shown.

1.

Place

the

deck

in

a

horizontal

position.

2.

Apply

a

few

drops

of

oil

to

the

respective

spindles

shown,

except

the

capstan

and

the

reel

motors,

Spread

the

oil

evenly

on

the

spindle

surfaces

using

a

cotton

cloth

or

similar

applicator.

3.

For

the

capstan

and

reel

motors,

apply

a

few

drops

to

the

indi-

cated

positions

but

do

not

spread

the

oil.

4.

After

oiling

all

points,

operate

the

deck

fer

1

to

2

hours

until

the

oil

is

thoroughly

absorbed,

Fig.

2-15

a

3

ELECTRICAL

ADJUSTMENT

AND

CHECKS

NOTES:

1.

Clean

and

demagnetize

the

entire

tape

path

prior

to

3-1

POWER

SUPPLY

CHECK

making

any

adjustments

or

checks.

2.

Make

sure

that

the

deck

is

properly

set

for

the

volt-

age

in

your

area,

3,

Adjustments

and

checks

are

generally

done

in

order:

of

L-ch,

then

R-ch.

Double

reference

numbers

in-

dicate

L-ch/R-ch.

(Example:

R121/R221)

R

&

P

AMPL

PCB

4.

0B

is

referenced

to

0.775

V.

If

an

AC

voltmeter

is

used

which

references

0

dB

to

1

V,

appropriate

com-

pensation

must

be

made.

5.

An

AC

voltmeter

with

an

input

impedance

of

1M

ohms

or

more

must

be

used.

6.

In

the

charts,

instruction

in

the

MODE/INSTRUC-

TION

column

at

each

step

is

continued

from

pre-

vious

step

indication

unless

specified

here.

1.

Connect

a

DC

voltmeter

to

15

of

U102

on

the

R

&

P

AMPL

PCB.

2.

The

DC

voltage

shoud

be

+12

V.

(See

Fig.

3-1)

DC

VOLTMETER

Fig.

3-1

3-2

MONITOR

PERFORMANCE

[

Deck

settings:

MONITOR

sw.:

SOURCE

|

MODE/

SIGNAL

ADJUST

CONNECTION

|

=

iNSTRUCTION

SOURCE

|

(or

CHECK)

BUTEUE

j

EMBEDS

MIC

cont:

MIN

7

400

Hz/—22

dB

LINE

min,

input

sa[

3-2

LINE

cont:

MAX

R123/R223

+1

dB

(0.869

V)

ane

.

tafrase

|

OUTPUT

cont:

MAX

(61.6:m¥)

leve|

OUTPUT

cont.

(L/R)

If

channels

do

Sp

elie’

1.

MONITOR

|

1-2

not

match,

re-

—5

dB

(436

mV)

poss

tion

Tor

output

adjust

R123/

abel

R223

to

corres-

eon

re

pond

to

the

lower

OUTPUT.

OUTPUT

cont:

400

Hz/—12

dB

Speaified

position

Te

ue

my

oh

ke

eo

ie

sale

ares

X300R/X300

|

ot

Ee

TT

MODE/

IGNA

ADJUST

ITEM

CONNECTION

pore

eel

Senne

io

CHECIG

OUTPUT

REMARKS

erent

,

LINE

cont:

400

Hz/—12

dB

|

2.

VU

meter

|

2-1|

Fig.

3-2

Spec.

position

(1-3)

(195

mv)

R131/R231

O

VU

on

VU

meter

—

at

—

3.

MIC

input

|

3.4

Fig.

3-2

but

MIC

cont:

MAX

400

Hz/—70

dB

Check

—5

dB

+2

dB

MIC

min,

input

|*

level

|

LINE

IN

MIC

LINE

cont:

MIN

(245

pV)

(346

mV

to

548

mV)

|

level

4.

PHONES

LINE

cont:

400

Hz/—12

dB

;

iti

=

—24dB+2dB

output

4-1|

Fig.

3-3

Spec.

position

(1-3)

Check

level

MIC

cont:

MIN

(195

mV)

(38.8

mVto

61.5

mV)

IMPORTANT:

After

step

4-1

is

completed,

do

not

alter

any

of

the

controls

during

later

checks.

OSCILLOSCOPE

OSCILLATOR

piSTORTION

ANALYZER

ATTENUATOR

IkHz

FILTER

Fig.

3-2

Basic

connection

3-3

Deck

settings:

MONITOR

sw.:

MIC

controls

(L/R):

PLAYBACK

PERFORMANCE

TAPE

AC

Voltmeter

DECK

AC

Voitmeter

under

TEST

Fig.

3-3

Connection

for

PHONES

check

TEST

LOAD

ed

hes

By

Minimum

level.

position

TEAC

test

tapes:

LINE

controls

(L/R):

OUTPUT

controls

(L/R):

For

playback

alignment

Specified

position

(step

1-3)

Specified

position

(step

1-2)

YTT-1052:

For

9.5

cm/s

or

3-3/4

ips,

EE

YTT-1053:

For

19

cm/s

or

7-3/4

ips,

EE

For

recording

alignment

(blank)

YTT-8013:

For

LH

(1,

I)

YTT-8053:

For

EE

YTT-1002:

For

9.5

cm/s

or

3-3/4

ips,

LH

(1,11)

=.

NOTE:

TAPE

SELECTOR

(left)

switch

has

no

effect

on

playback

mode.

YTT-1003:

For

19

cm/s

or

7-3/4

ips,

LH

(1,

ID

‘a

]

MODE/

SIGNAL

ADJUST

|

ITEM

CONNECTION

INSTRUCTION

SOURCE

(or

CHECK)

OUTROS

REMARKS

|

4

5.

Playback

een

a

YTT-1003

Azimuth

adjust

|

Phase:

within

45°

head

5-1|

Fig.

3-4

ye

(16

kHz/—10

screw

on

head

on

oscilloscope

imuth

ean

dB)

(Fig.

2-11)

(Fig.

3-5)

azimut'

(R):

LH

a,

g.

Ig.

|

ei

Fig.

3-2

ET

IS

cy.

|

LI

aRat

A

—5

dB

(436

mV)

;

{400

Hz/0

dB)

SPEED:

HIGH

6.

i

a

es

.

TAPE

SELECT.

level.

b

(R):

LH

(t,

ID

He

Check

—5

dB

+2dB

ao

(346

mV

to

548

mV)

OSCILLOSCOPE

SPKR

O°

(IN

PHASE)

‘

AC

Voltmeter

T-1426

Fig.

3-4

Connection

for

azimuth

check

45°

90°

Fig.

3-5

Confirming

phase

relationship

é

T-

1493

|

:

{

X300R/X300

MODE/

SIGNAL

ADJUST

ITEM

CONNECTION

ee

an

nee

arate

OUTPUT

REMARKS

r

7-1|

Fig.

3-2

FWD

HIGH

|

YTT-1003

R116/R216

Fig.

3-6

|

“1]

Fig.

3-

TAPE

SELECT)

a.

(R):

LH

(1,

I)

Low

|

yrtT-1002

R120/R220

Fig.

3-7

Changing

play

mode

to

REV

direction,

check

whether

the

frequency

response

specs

are

met

according

to

7-1

and

7-2.

FWD

SELECT|HIGH

|

YTT-1053

R114/R214

Fig.

3-6

IEEE

Low

|

yTT-1052

R118/R218

Fig.

3-7

|

Changing

play

mode

to

REV

direction,

check

whether

the

frequency

response

7.

Frequency

response

74

specs

are

met

according

to

7-4

and

7-5.

ek

Zz

[

e

Ratio

of

spec.

FWD

and

REV

OUTPUT

signal

HIGH

and

LOW

LH

(1,

10)

(—5

dB)

to

in-

8.

Signal-to-

|

8-1]

Fig.

3-2

LH

(1,

ID)

and

EE

YTT-8013

Check

foe

49

dB

herent

noise

level

noise

and

LOW:

47

dB

®

Change-over

of

Use

fully-erased

YTT-8053

EE

AC

line

plug

tape

(Use

bulk

Hea

51dB

polarity.

The

worse

tape

eraser)

LOW:

49

dB

reading

should

be

with

in

specifica-

tion.

si

|

eterno

5

eee

ene

eh

be

——

3-4

RECORDING

PERFORMANCE

Deck

settings:

MONITOR

sw.:

TAPE

TEAC

test

tapes:

For

recording

alignment

(blank)

MIC

controls

(L/R):

Minimum

level

position

YTT-8013:

For

LHIL

LINE

controls

(L/R):

Specified

position

(step

1-3)

YTT-8053:

For

EE

OUTPUT

controls

(L/R):

Specified

position

(step

1-2)

MODE/

SIGNAL

ADJUST

CONNECTION

|

i

sTRUCTION

SOURCE

(or

CHECK)

OnerOT

REMARKS

AC

voltmeter

be-

tween

terminals

Min,

reading

on

AC

9-1

|

#72(75)

and

#78

|

Rec-pause

mode

az

L106/L206

voltmeter

R

&

P

AMPL

PCB

.

——+

1s

.

t

healed

Min.

reading

9-2

|

Fig.

3-2

”

-

L101/L201

{—40

dB

or

more

?

|

7.78

mV

or

less)]

—

a

Test

tape:

YTT-8013

”

:

7

10:

Fig.

22

seco

LON

|

ee

10.

Record

Bias/EQ:

LH

TI

7

bias

7

;

(LH

1)

Over

bias

value

10-2]

Fig.

3-2

a .

C141/C241

2dB~4dB

(from

peak)

11.

Record

Test

tape:

YTT-8013

he

level

44-4]

Fig,

3-2

SPEED

sw.:

HIGH

ee

ay

dB

|

R158/R258

—5

dB

(436

mV)

(LH

ID

Bias/EQ:

LH

IE

=

—

+

|

HIGH

Required

signal/

.

12-1]

Fig.

3-2

YTT-8013

—22dB

(61.5mV)

|L102/L202

Fig.

3-8

12.

Frequency

Bias/EQ:

LH

I

=

-

7

I

=

response

|

12-2

“i

iW

Required

signa

ee

Agi?

wea

dB

(19.6

mv)

LE

104/L204

Fig.

3-9

L

tHID

=

[—

t

————

ee

SPEED

sw.:

LOW

10

kHz/—32

dB

Check

When

Bias/EQ

are

changed

from

LH

IT

12-3

id

Bias/EQ:

LH

|

(19.5

mv)

to

LH

1,

output

level

should

be

raised

by

+3

dB

at

10

kHz.

13.

Record

Test

tape:

YTT-8053

7

kHz

and

400

Nearly

equal

bias

43-1)

Fig.

3-2

SPEED

sw.:

LOW

Hz/—32

dB

C142/C242

output

level

at

(EE)

Bias/EQ:

EE

(19.5

mv)

both

frequencies

J

22}

14.

Record

Test

tape:

YTT-8053

400

Hz/-12

level

14-1}

Fig.

3-2

SPEED

sw.:

HIGH

dB

R159/R259

—5

dB

(436

mV)

(EE)

Bias/EQ:

EE

(195

mV)

10

SIGNAL

ADJUST

X300R/X300

MODE/

CONNECTION

INSTRUCTION

SOURCE

(or

CHECK)

BUTE

REMARKS

~+—

;

:

TT

Reguired

signal/

HIGH

|

_994B

L103/L203

Fig,

3-8

15.

Frequency]

15-1]

Fig.

3-2

YTT-8053

(61.5

mV)

response

i :

(EE)

Bias/EQ:

EE

Required

signal/

LOW

—32

dB

L105/L205

Fig.

3-9

(19.5

mV)

a

eo

Peer

|

LHIT

1

kHz/—12

dB

we

YTT-8013

and

YTT-8053|

(195

mV)

er

eae

Ape

16.

Signal-to

|

16-1|

Fig.

3-2

HIGH

and

LOW

then

Check

EE

:

(—5

dB)to

inherent

noise

ratio

LH

(IH)

and

EE

no-signal

record-

HIGH:

48

dB

noise

level

ahi

{tow

46

dB

t-

:

Fig.

3-2

Test

tape:

YTT-8053

1

kHz/—2

dB

OUTPUT:

—65

dB

Ref.

OUTPUT

level:

i.

|17-1]

Switch

ON

1

kHz

|

SPEED

sw.:

HIGH

(615

mV,

+19

|

Check

or

more

7598

17,

Erase

effi-

|

17-

Bi

i

Bias/EQ:

EE

VU)

then

(436

nV

or

less)

The

worst

value

ciency

ilter

Hash:

no-signal

record-

(70

dB

min.

should

be

within

ing

ratio)

specification,

18.

REC

Fig.

3.2

Test

tape:

YTT-8053

1

ee

10

ph

ok

—60

dB

pelo

level:

MUTE

185

Pl

ONL

SHE

Boece

VU)

then

cheek

(0.775

mV

or

less

The

worst

value

function

iter

fess:

record

muting

(65

dB

min

should

be

within

ratio)

specification.

Fig,

3-2

Test

tape:

YTT-8053

[ti

1

cf2(12

dB

eo

19-1]

Switch

ON

1

kHz

|

SPEED

sw.:

HIGH

:

Check

Find

the

difference

19.

Channel

filter

Bias/EQ:

EE

R:

No

signal

(1.38

mV

or

less)

between

the

1

kHz

separa-

record.

(50

dB

min.

ratio)

recorded

portion

tion

:

and

the

no-signal-

L:

No

signal

record.

recorded

portion

19-2

i

=

R:

1

kHz/—12

dB

Co

Le

~

(195

mv)

20-1]

Fig.

3-2

Same

as

19-1

Leopard

as

Ss

20.

Adjacent

|

track

”

|

At

both

channels:

crosstalk

|

50.2

"

Interchange

R

and

L

=

Check

125

Hz:

—45

dB

or

reels

then

playback

more

(4.36

mV

or

less)

a

(40

dB

min.

ratio)

1.0%

or

less

7

YTT-8013

and

YTT-8053

-

21,

Distor-

|

94.1|

Fig.

3-2

SPEED

sw.:

HIGH

Woe

ane

||

Check

BM

aden

tion

LH

(II)

and

EE

Say

EE

_|

om

|

LH,

YTT-1003

LHI,

YTT-8013

sear

EE,

YTT-1053

-------

EE,

YTT-8053

+2

Pasi

ee

=|

+

3(aB)

-2

I

“2

]

-

4

N

~

4(aB)

-4

J

-4(aB)

d

26k

(dB)

;

+4

JE)

i

dis

30k

40

400

20k

(Hz)

40

400

6K

20k

(Hz)

Fig.

3-6

Playback

frequency

response

(HIGH)

Fig.

3-8

Overall

frequency

response

(HIGH)

LH,

YTT-1002

LHI,

YTT-8013

ayn

ape

nis

EE,

YTT-1052

~-7----

EE,

YTT-8053

+4

+2

at

+

3(dB)

+2

7

+

3(dB)

0

T

10]

-2

!

ak

|

_

4

SI

-

6

(4B)

-

4

-4

(4B)

(dB)

18k

(dB)

22k

L

1

iJ

L

i

—1__t—_

40

400

14k

(Hz)

40

400

10k

|@k

(Hz)

Fig.

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15.

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YTT-8053

(EE)

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ARETE

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ea

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(195mV,

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RPT

REC

MUTE€—kIe

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&

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17.

REC

MUTEMRF

277

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(195mV,

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LINE

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(61.5mV)

Leh

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Teac X-300R User manual

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