Teac X-1000r User manual

TEAC.

SERVICE

MANUAL

X-1000R

Stereo

Tape

Deck

dbx

noise

reduction

system

made

under

license

from

dbx,

In-

corporated.

The

word

dbx

and

the

dbx

Symbol

are

trademarks

of

dbx,

Incorporated.

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

replacement.

SPECIFICATIONS

Track

System

%-track,

2-channel

stereo

Head

System

Gheads:

forward

erase,

forward

record,

reverse

playback,

forward

playback,

reverse

record,

reverse

erase.

Size

10-%and

7”

Speed

19cm/s

(7-%

ips)

and

9.5cm/s

(3-%

ips)

Inputs

(level

and

impedance)

mic:

Specified

input

level:

+—60dB

(0.775mV)/10kohms

Min,

input

level:

—70dB

(245uV)

LINE

IN:

Specified

input

level:

—12dB

(195mV)/5S0kohms

Min,

input

level:

—224B

(61.5mV)

Outputs

(level

and

impedance)

OUTPUT:

Specified

output

level:

—5dB

(436mV)/10kohms

Max.

output

level:

+1dB

(0.869V)

PHONES:

Specified

output

level:

—24dB

(48.9mV)/8ohms

Playback

equalization

“LH”

tape:

19cm/s:

3,180ys

+

50us

(NAB)

9.5cm/s:

3,180us

+

90us

(NAB)

“EE”

tape:

19cm/s:

3,180us

+

35us

9,5cm/s:

3,180us

+

50us

Motors

Capstan

motor:

FG

servo

DC

motor

Reel

motor:

2

DC

slotless

motors

Bias

Frequency

—

100kHz

Power

Requirements

100/120/220/240V,

AC

50/60Hz

90W

(General

export

model)

220V

AC

50Hz,

100W

(Europe

model)

240V

AC

50Hz,

100W

(U.K./Australia

model)

120V

AC

60Hz,

90W

(U.S.A./Canada

model)

Weight

22.0kg

(48-8/16

Ibs)

net

26kg

(57-5/16

Ibs)

(with

wooden

case)

40mm

(21-1/8")

")

486mm

(19-1

Broken

line

indicates

General

Export

Models

for

Limited

Areas.

Fig.

1-1

Dimensions

1

SPECIFICATIONS

AND

SERVICE

DATA

SERVICE

DATA

MECHANICAL

Tape

Speed

Deviation

3,000Hz

+

30Hz

Tape

Speed

Drift

15Hz

FWD/REV

Tape

Speed

Differential

30Hz

Wow

and

Flutter

Playback:

0.05%

(WRMS),

0.10%

(RMS)

at

19cm/s

0.07%

(WRMS),

0.12%

(RMS)

at

9.5cm/s

Record/Playback:

0.12%

(RMS)

at

19cm/s

0.15%

(RMS)

at

9.5em/s

Pinch

Roller

Pressure

1.35kg

~

1.9kg

(3.0

Ibs

~

4.2

Ibs)

Tape

Tension

Play

mode:

Take-up:

50g

+10g

(1.402

~

2.102)

Supply:

50g

410g

(1.402

~

2.102)

Fast

winding

mode

Take-up:

110g

#10

(3.502

~

4.202)

Supply:

Brake

Torque

Forward

direction:

1.2

~1.7kg-cm

(17

~

240z-inch)

Reverse

direction:

|

0.6kg-cm

(8.307-inch)

or

less

Left/right

deviation:

0.2kg-cm

(2.802-inch)

or

less

Fast

Winding

Time

80

seconds

or

less

for

550m

(1800

feet)

Pitch

Control

Standard

tape

speed

+6%

or

more

FWD/REV

Change

Time

3.5

sec.

40.5

sec.

TIMER

Activate

Time

4

sec.

+2

sec.

ELECTRICAL

Frequency

Response

See

Fig.

3-5

to

3-10

Signal

to

Noise

Ratio

Playback:

50dB

min.

(19cm/s,

LH)

524B

min,

(19cm/s,

EE)

49dB

min.

(9.5cm/s,

LH)

52dB

min.

(9.5cm/s,

EE)

Overall:

48dB

min.

(19cm/s,

LH)

50d8

min.

(19cm/s,

EE)

46dB

min.

(9.5cm/s,

LH)

50dB

min.

(9.5cm/s,

EE)

Overall

(dbx):

65dB

min.

(Both

speeds,

various

tapes)

Erase

Efficiency

68dB

min.

at

1kHz

(measured

with

input

10dB

higher

than

the

specified

input

level)

Channel

Separation

50dB

min,

at

1kHz

Adjacent

Track

Crosstalk

40dB

min,

at

125Hz

Total

Harmonic

Distortion

At

1kHz,

and

at

19cm/s

0.8%

or

less

0.8%

or

less

(dbx

IN)

3%

or

less

(dbx

IN

+

20VU)

©

Improvements

may

result

in

SPECIFICATIONS

AND

SERVICE

DATA

changes.

©

Value

of

“dB”

in

the

data

refers

to

OdB

(0.775V),

except

where

specified.

2-1

ROTATING

PART

THRUST

CLEARANCE

CHECKS

Reference

values

Capstan

shaft:

0.1mm

to

0.25mm

(magnefloat

type)

|

Inertia

roller:

0.05mm

to

0.3mm

i

Tension

arm

guide

roller:

0.05mm

to

0.3mm

i

Reel

motor:

0

(spring

type)

Tension

arm:

0

(spring

type)

NOTE:

Since

the

capstan

shaft

is

a

magnefloat

type,

check

that

it

is

forced

towards

the

rear

of

the

deck

while

rotating.

2-2.

CAPSTAN

MOTOR

REPLACEMENT

1.

When

the

capstan

motor

is

replaced,

install

it

with

its

lead

wires

and

washers

as

shown.

2.

Check

that,

when

the

deck

is

operated

by

repeating

the

forward

and

reverse

play

modes,

the

capstan

drive

belt

changes

position

on

the

flywheels

smoothly.

bm

wasxor2xto8

&

=

$4.

5xG8x10.5

lead

wires

Fig.

2-1

2-3,

BRAKE

ADJUSTMENT

NOTE:

The

explanation

and

figure

in

this

paragraph

are

for

the

left

side

brake,

similar

checks

and

adjustments

are

applicable

for

the

right

side

one.

1,

Adjust

by

moving

the

brake

band

bracket

in

either

direction

(arrow

(A))

so

that

the

reel

motor

chassis

is

in

parallel

with

the

brake

arm,

and

so

that

the

brake

band

makes

proper

clearance

i

equally

all

around

the

reel

table base.

2,

Adjust

by

moving

the

brake

solenoid

in

either

direction

(arrow

(D))

so

that

the

stroke

of

the

solenoid

plunger

is

about

2mm,

3.

Adjust

by

moving

the

band

ass’y

retaining

plate

as

shown

in

(B,

i

C,

€)

so

that,

when

the

plunger

is

pushed

in

the

direction

of

the

]

solenoid

housing,

the

reel

table

base

is

not

rubbed

by

the

brake

i

band

and

is

properly

spaced.

X-1000R

2

MECHANICAL

ADJUSTMENTS

AND

CHECKS

reel

motor

chassis

solenoid

plunger

brake

arm

|

}~

brake

band

[—

brake

solenoid

mounting

screws

ree!

table

base

band

ass’y

retaining

plate

fe

Fig.

2-2

2-4.

BRAKE

TORQUE

MEASUREMENT

1,

Place

an

empty

7”

reel,

connected

to

a

spring

scale

by

a

string,

on

the

reel

table,

2.

Pull

the

scale

away

from

the

reel

and

read

the

scale

indication

only

when

the

reel

table

is

steady

motion.

3.

Do

steps

1

and

2

for

each

measuring

condition,

(A)

through

(D)

in

Fig.

2-3.

4.

The

values

are

as

chart

in

Fig.

2-3.

A

B

c¢

D

1.2

to

1.7kg-em

(17

to

240z-inch)

0.6kg-cm

(8.302-inch)

or

less

+

Forward

direction

(B)

(C)

*

Reverse

direction

(A)

(D)

Left/right

deviation

0.2kg-cm

(2.802-inch)

or

less

NOTES:

1.

The

reverse

direction

values

are

reference.

2.

The

specification

of

left/right

deviation

only

applies

for

forward

direction

torques.

Torque

calculating

formulas:

(1)

Torque

(in

g-cm

or

oz-inch)

=

Force

or

Weight

(in

g

or

oz)

x

Radius

(in

cm

or

inch)

(2)

Conversion

of

g-cm

to

oz-inch:

g-cm

x

0.0139

=

oz-inch

Fig.

2-3

2-5

PAUSE

POSITION

ADJUSTMENT

1,

Place

the

deck

in

the

pause

made.

2.

Adjust

by

turning

the

pause

positioning

nut

so

that

the

clearance

between

the

capstan

shaft

and

the

tape

is

0.5mm

to

1.0mm.

3.

Of

the

two

capstan

shaft/pinch

rollers,

adjustment

is

allowable

only

for

the

side

having

the

narrower

clearance.

4.

Check

that,

by

repetition

of

play

mode

to

pause

mode

and

stop

mode

to

pause

mode,

there

is

clearance

at

both

sides.

pause

positioning

nut

pressure

stroke

adjusting

nut

Fig.

2-4

Pause

position

and

pinch

roller

pressure

stroke

adjustments

capstans

clearance clearance

Fig.

2-5

Pause

position

adjustment

2-6

PINCH

ROLLER

PRESSURE

STROKE

ADJUSTMENT

1.

Set

the

deck

in

the

forward

or

reverse

play

mode.

2.

Adjust

by

turning

the

pressure

stroke

adj,

nut

(Fig.

2-4)

so

that

the

clearance

between

the

and

the

stopper

cushion

is

about

1.0mm.

3.

Since

the

clearance

is

produced

at

one

side

(left

or

right),

adjust-

ment

for

this

side

only

is

permissible.

left

capstan

right

capstan

left

right

inch

roller

inch

roller

pi

Pi

stopper

cushions

PP

about

1.0mm

Either

the

left

or

right

should

have

a

clearance.of

about

1.0mm.

Fig.

2-6

2-7

PINCH

ROLLER

PRESSURE

MEASUREMENT

NOTES:

1.

The

explanation

below

applies

to

both

the

left

and

right

pinch

rollers.

2.

Both

pinch

roller

pressures

are

automatically

set

with

equal

value.

1.

Hold

both

the

left

and

right

tension

arms

in

the

upper

positions

using

rubber

bands,

string

etc.

2.

Set the

deck

in

either

play

mode

with

no

tape

loaded.

3.

Attach

the

spring

scale

to

the

pinch

roller

as

shown

in

the

figure.

4.

Draw

the

pinch

roller

away

from

the

capstan

shaft

(in

the

direc-

tion

of

a

line

intersecting

the

centers

of

the

capstan

shaft

and

the

pinch

roller)

until

the

capstan

shaft

and

the

pinch

roller

are

se-

parated.

5,

Return

the

scale

back

until

the

pinch

roller

just

begins

to

turn.

The

scale

should

then

be

reading

as

follow.

Reference

value:

1.35kg

to

1.9kg

(3.0

Ibs

to

4.2

Ibs)

6.

If

the

reading

is

out

of

specification,

replace

defective

part(s).

There

are

no

adjustable

parts.

spring

scale

Fig.

2-7

2-8

TAPE

TENSION

Tape

tension

value

NOTE:

Alphabet

letters

in

parentheses

indicates

measuring.

point

shown

in

figure.

Play

mode

\Take-up:

(A)

in

FWD

50g

+

10g

(1.402

~

2.102)

(B)

in

REV

Supply:

(B)

in

FWD

50g

+

10g

(1.402

~

2.102)

(A)

in

REV

Fast

winding

mode

(Take-up:

(A)

in

F.F.

|

110g

+

10g

(3.502

~

4.202)

(B)

in

REW

‘Supply:

(B)

in

F.F.

|

This

value

is

automatically

set

when

(A)

in

REW

|

doing

“2-9

FAST

WINDING

SPEED”

adjustment,

Fig.

2-8

NOTES:

1.

Since

these

settings

are

precisely

factory

adjusted,

in

general,

they

should

not

be

re-adjusted.

If it is

specifi-

cally

required,

a

special

meter

is

needed.

2.

To

facilitate

adjustment,

the

deck

should

be

placed

in

a

vertical

position.

3.

For

the

reels

mounted

on

both

left

and

right

reel

tables,

use

the

same

size

ones,

4,

Before

all

the

following

adjustments

(2-8-1

~

2-8-4),

perform

in

order

to

activate

the

rele-

vant

circuit.

a.

Thread

the

tape

to

lift

up

both

tension/shut-off

arms.

b.

Set

the

POWER

switch

to

ON.

c.

Leave

the

deck

as

it

is

for

5

to

10

minutes.

There

should

be

almost

equal

values

between

tape

tension

at

point

A

during

fast

forward

mode

and

at

point

B

during

rewind

mode.

aid

2-8-1

IN

FORWARD

PLAY

1.

Place

a

reel

loading

TEAC

YTT-8013

test

tape

on

the

left

reel

table

and

an

empty

reel

on

the

right

reel

table,

then

thread

the

tape.

2.

Let

the

tape

run

in

fast

forward

mode

until

both

reels

have

nearly

the

same

tape

winding

diameter.

3.

During

forward

play

with

a

tape

speed

of

3-3/4ips

(9.5cm/s),

Measure

tape

tension

at

point

A.

4,

Adjust

R120

so

that

the

specified

tape

tension

of

50g

+

10g

(1.402

~

2.102)

is

obtained.

2-8-2

IN

REVERSE

PLAY

(Continued

from

step

4

above)

5,

Let

both

reels

have

the

same

amount

of

tape

wounded

on

them.

6.

During

reverse

play

with

a

tape

speed

of

3-3/4ips,

adjust

R220

to

get

a

specified

tape

tension

of

50g

+ 10g

(1.40z~2.10z)

at

point

B.

2-8-3

IN

FAST

FORWARD

1,

Load

a

TEAC

YTT-8013

test

tape

on

the

left

ree!

table

and

an

empty

reel

on

the

right

reel

table,

then

thread

the

tape,

2.

Stop

the

left

reel

by

hand

and

set

the

deck

in

fast

forward

mode,

3.

Adjust

R237

to

obtain

a

100g

to

120g

(3.502

~

4.207)

value

at

point

A

(Obtain

a

100g

or

3.00z

value

as

far

as

possible).

2-8-4

IN

REWIND

1,

Load

a

TEAC

YTT-8013

test

tape

on

the

right

reel

table

and

the

empty

reel

on

the

left

reel

table,

then

thread

the

tape.

2.

Stop

the

right

reel

by

hand

and

set

the

deck

in

the

rewind

mode.

3.

Adjust

R238

to

obtain

a

100g

to

120g

(3.00z

~

3.602)

value

at

point

B

(Obtain

a

100g

or

3.50z

as

far

as

possible).

R120...

FWD

awd

R220

...

REV

PLAY

R238

...

REW

TP.4

R289

...

(FF,

REW

SPEED)

Fig.

2-9

Tape

tension

adjuster

location

2-9

FAST

WINDING

SPEED

1.

Set

the

deck

in

vertical

position.

2.

Connect

oscilloscope

between

TP1

test

point

on

the

POWER

SERVO

PCB

and

ground.

3.

Thread

a

TEA

YTT-8013

test

tape.

In

this

case,

either

use

of

7

inch

reels

or

10

inch

are

permitted

provided

both

left

and

right

reels

are

the

same

size.

4.

During

fast

forward

or

rewind

mode,

adjust

R289

so

that

wave-

length

displayed

on

the

oscilloscope

becomes

7msec.

Adjustment

should

be

satisfied

at

any

tape

winding

position.

5.

Check

that

almost

equal

value

of

fast

winding

speed

is

obtained

between

fast

forward

and

rewind

modes.

‘Tmsec.

Fig.

2-10

Waveform

at

TP1

210

TENSION

ARM

HEIGHT

ADJUSTMENT

1.

Thread

any

standard

tape

on

the

deck

using

a

standard

empty

reels

such

as

TEAC

RE-1002.

2.

Set

the

deck

in

the

forward

or

reverse

play

mode.

3.

Stop

left

(right)

inertia

roller’s

rotation

by

hand.

Adjust

by

turning

the

left

(right)

tension

arm

height

adjusting

nut

(refer

to

Fig.

2-11)

so

that

the

tape

moves

in

the

center

of

the

inertia

roller.

NOTE:

When

adjusting,

pay

special

attention

to

the

relationship

between

position-detecting

shutter

and

the

opening

of

photo-interrupter

to

prevent,

for

example,

the

shutter

from

being

caught.

4.

Release

the

inertia

roller.

Fine-adjust

the

adjusting

nut

again

until

there

is

no

tape

curling

on

the

tape

guide

between

the

erase

head

and

the

left

(right)

inertia

roller.

5.

After

Adjusting

the

height

of

both

left

and

right

tension

arms,

check

that

the

tape

running

condition

is

good

by

switching

be-

tween

fast

forward

and

rewind

modes.

6.

If

the

tape

running

position

is

different

when

the

inertia

roller

stops

and

when

it

turns,

the

condition

when

the

inertia

roller

is

rotating

has

priority.

Figure

shows

left

side

tension

arm.

left

tension

arm

tension

arm

\

height

adj.

nut

photo-interrupter

position-detecting

shutter

Fig.

2-11

REEL

TABLE

HEIGHT

ADJUSTMENT

1.

Adjust

the tension

arm

height

beforehand

(See

2-10).

2.

Check

each

reel

table

height

using

a

TEAC

RE-1002

empty

reel

and

letting

the

tape

run

in

each

tape

operating

mode.

3.

If

the

tape

rubs

against

the

reel

flanges,

adjust

the

reel

table

height

by

means

of

the

two

reel

table

mounting

screws.

fl

standard

empty

reel

WLI

=

t

f

i

(2

eel

table

‘two

screws

=

Fig.

2-12

2:12

HEAD

AND

TAPE

PATH

ALIGNMENTS

Adjustment

screws

and

nuts

@

Head

azimuth

©

Head

height

and

tilt

®

(©

Head

mounting

©

Tape

guide

height

©

Fixed

(not

adjustable)

Forward

Reverse

Forward

Reverse

Erase

Record

pgPlayback

Playbackys,

Record

Era

||

trateat

-

Ei

|

sfeste

se

Tape

guides

Fig.

2-13

Tape

guide

and

head

arrangement

'

3.

If

not

parallel,

loosen

the

reinforcement

plate

screw

near

the

}

TUT

correction-required

side

(Refer

to

Fig.

2-18),

then

correct

tilt

of

The

head

surface

should

be

parallel

to

the

tape

L

pinch

roller

spindle

using

correction

jig.

Adjustment

can

be

done

i

guide

surface,

;

by

tilting

correction

jig

in

direction

of

arrow

A

or

A’.

!

NOTE:

AZIMUTH

(1)

Use

the

jig

as

near

as

possible

to

the

pinch

roller

spindle.

(2)

Do

not

touch

the

surface

of

spindle.

(3)

Use

no

other

tool

for

this

adjustment!

4,

Remove

pinch

roller,

then

push

up

tape

lifter

to

visually

align

The

gap

of

the

head

core

should

be

perpendicular

to

the

tape

travel.

HEIGHT

pinch

roller

spindle

with

the

capstan

shaft

viewed

from

direction

The

upper

(lower)

core

of

the

head

should

be

level

of

arrow

B

in

Fig,

2-15.

with

the

upper

(lower)

edge

of

the

tape.

5,

If

needed,

adjust

by

tilting

correction

jig

in

direction

of

arrow

B

or

B’

in

Fig.

2-18.

TANGENCY

The

dotted

line

should

be

perpendicular

to

the

(

j

surface

of

the

tape.

Fig.

2-14

Head

regulation

elements

tape

lifter

212-1

COARSE

ADJUSTMENT

OF

PINCH

ROLLER

PARALLELISM

The

following

procedure

is

for

parallelism

adjustment

of

left

pinch

roller.

A

similar

procedure

is

also

applied

for

the

right

pinch

roller.

1.

Let

pinch

roller

draw

near

toward

capstan

shaft

by

manually

lift-

5

ing

up

tape

lifter

shown

in

Fig,

2-15,

2.

Check

pinch

roller/capstan

shaft

parallelism

viewed

from

direc-

!

tion

of

arrow

A

shown

in

Fig.

2-15.

Refer

to

Fig,

2-16.

Fig,

2-15

Directions

for

pinch

roller

parallelism

check

‘capstan

shaft

capstan

shaft

pinch

roller

shaft

Fig.

2-17

View

in

direction

B

(example

of

non-parallelism)

correction

jig

(TEAC

P/N

5736000100)

MA

reinforcement

plate

screws

(Loosen

the

correction-required

side)

reinforcement

pinch

roller

|

Plate

spindle

Fig.

2-18

Pinch

roller/capstan

alignment

2-12-2

HEAD

TILT

AND

AZIMUTH

ADJUSTMENT

1.

Visually

adjust

the

tilt

of

each

playback

head

so

that

the

head

surface

is

parallel

to

the

nearest

tape

guide,

2.

Visually

adjust

the

tilt

of

each

record

head

so

that

the

head

sur-

face

is

parallel

to

the

nearest

capstan

shaft.

3.

Make

coarse

azimuth

adjustments

for

the

record

and

playback

head,

viewing

each

head

from

front

(without

tape).

tape

guide

Nt

head

—}=-

To

be

parallel

Fig.

2-19

Playback

head

tilt

adjustment

a

aia

shaft

1

T

i]

El

record

head

Blige

be

parallel

Fig.

2-20

Record

head

tilt

adjustment

2412-3

TAPE

GUIDE

HEIGHT

ADJUSTMENT

1.

Running

a

TEAC

YTT-8013

test

tape

(thickness

=

354m)

in

the

forward

direction,

adjust

the

height

of

the

left

tension

arm

so

that

the

lower

edge

of

the

tape

is

just

touching

the

lower

edge of

the

tape

guide

(1).

See

Fig.

2-21.

Also

refer

to

2-10

TENSION

ARM

HEIGHT

ADJUSTMENT”.

.

Adjust

the

height

of

the

tape

guide

(2)

so

that

the

upper

edge

of

the

tape

is

in

contact

with

the

upper

edge

of

the

tape

guide.

.

Confirm

that

the

adjustments

do

not

cause

the

tape

to

curl.

.

Apply

locking

paint

to

the

height

adjusting

nut

of

the

tape

guide

(2).

3.

During

reverse

play,

adjust

height

of

tape

guides

(3)

and

(4)

in

the

same

way

as

steps

1

~

4.

For

tape

guide

(4),

adjust

right

tension

arm

height.

.

Check

to

see

there

is

no

tape

curling

at

all

the

tape

guides

in

both

forward

and

reverse

play

modes,

tape

guide

(1)

tape

tension

arm

_

inertia

roller

Good

Mm

r

t

7

Adjust

tension

arm

height

for

tape

to

L

lightly

touch

here.

tension

arm

height

adj.

nut

Fig.

2-21.

Tension

arm

height

adjustment

|

a

i

tape

guide

height

adj.

nut

tape

Adjust

so

that

tape

touch

lightly

here>

tape

guide

(2)

or

(3)

Fig.

2-22

Tape

guide

height

adjustment

2-12-4

FINE

ADJUSTMENT

OF

PINCH

ROLLER

PARALLELISM

During

both

forward

and

reverse

with

HIGH

tape

speed,

each

pinch

roller

should

satisfy

the

following

requirement.

1.

Remove

pinch

roller

cap.

2.

Manually

move

pinch

roller

upward

by

1

~

2mm

from

the

stop

portion

of

the

pinch

roller

spindle,

then

play

a

test

tape.

3.

During

play

mode,

observe

whether

the

pinch

roller

position

changes

in

the

spindle

direction.

4.

lf

a

change

is

found,

re-adjust

accurately

tilt

of

pinch

roller

spindle

by

method

illustrated

in

Fig.

2-18.

2-12-56

HEAD

HEIGHT

ADJUSTMENT

The

following

explanation

is

for

the

forward

play

heads.

For

the

reverse

play

heads,

replace

bare

words

by

the

parentheses-closed

words.

1.

Confirm

that,

during

forward

(reverse)

play,

the

forward

(reverse)

erase

head

core

protrudes

0.1mm

above

(below)

the

moving

tape,

{f

not,

replace

the

head

with

another

one

and

recheck.

2.

Fine-adjust

each

record

and

playback

head

height

so

that

the

brass-colored

spacer

of

forward

(reverse)

direction

head

will

show

above

(below)

the

moving

tape.

(About

as

thick

as

a

thin

pencil

line).

Fig.

shows

the

forward

erase

head.

Slight

space

4—U

|

Tape

_/

"Forward

erase

head

Tape

guide

(1)

Fig,

2-23

Erase

head

height

OSCILLATOR

2:13

TAPE

SPEED

ADJUSTMENT

FREQUENCY

COUNTER

10.7

ie]

IWOW

&

FLUTTER

METER

DECK

w

u

under

TEST.

:

an

a

(Ay

Gi

20

LINE

IN

OUTPUT

Fig,

2-24

NOTES:

1.

Conduct

all

the

following

in

both

forward

and

reverse

play

modes.

2,

When

ordering

test

tapes,

allow

for

the

longer

delivery

time

that

is

required

for

them.

.

Connect

a

frequency

counter

to

either

OUTPUT

terminal.

.

Load

a

TEAC

YTT-2003

test

tape.

Set

the

SPEED

switch—

HIGH,

and

PITCH

CONT

knob—OFF.

.

Play

the

tape.

Adjust

HIGH

SPEED

control

(see

Fig.

2-25)

for

a

reading

of

3,000Hz

+5Hz.

.

Check

the

following

at

the

beginning

and

the

end

of

the

tape.

Specifications:

Tape

Speed

deviation

..

.

+.

+

3,000Hz

+30Hz

Tape

speed

drift

. . Z

Baa

Saag

ea

ik

15Hz

FWD/REV

tape

speed

differential

.............

30Hz

.

Change

the

test

tape

to

a

TEAC

YTT-2002,

and

SPEED

switch

setting

to

LOW.

.

Repeat

steps

3

through

4.

Adjust

LOW

SPEED

control

if

neces-

sary.

.

Pull

the

PITCH

CONT

knob

out,

Set

SPEED

switch

HIGH.

Play

a

YTT-2003

tape.

.

Check

if

the

speed

variation

of

at

least

3,000Hz

+180Hz

is

ob-

tained

when

the

PITCH

CONT

knob

is

rotated

fully

in

both

directions.

.

Change

the

test

tape

to

YTT-2002,

SPEED

switch

setting

to

LOW.

Repeat

step

8.

capstan

motor

capstan

servo

PCB

HIGH

SPEED

LOW

SPEED

Fig.

2-25

.

X1000R

2-14

WOW

AND

FLUTTER

CHECKS

NOTES:

1.

All

the

following

apply

to

both

forward

and

reverse

play

modes.

2.

The

following

measurements

should

be

made

at

the

beginning

and

the

end

of

the

tape.

3.

When

ordering

test

tapes,

allow

for the

longer

delivery

time

that

is

required

for

them.

Playback

1.

Connect

the

test

equipment

to

the

deck

as

shown

in

Fig,

2-24.

2.

Load

and

play

a

TEAC

YTT-2003

test

tape

for

HIGH

speed

(19cm/s

or

7-%ips),

or

a

TEAC

YTT-2002

test

tape

for

LOW

speed

(9.5cm/s

or

3-%ips).

3.

Read

the

indication

on

the

wow

and

flutter

meter.

Specifications:

HIGH

speed:

0.05%

WRMS

0.10%

RMS

LOW

speed:

0.07%

WRMS

0.12%

RMS

Overall

4,

Load

a

TEAC

YTT-8013

test

tape

(blank).

Apply

and

record

a

5.

During

simultaneous

tape

monitoring

(playing)

the

recorded

signal,

read

the

wow

and

flutter

meter

display.

Specifications:

HIGH

speed:

LOW

speed:

|

3,000Hz

signal.

0.12%

RMS

0.15%

RMS

2-15

REVERSE

SOLENOID

ADJUSTMENT

1.

When

the

reverse

solenoid

releases,

if

the

slide

plate

hits

the

stop-

per

screw/s

noisily,

the

solenoid

stopper

plate

may

be

adjusted

in

the

direction

of

the

solenoid

housing.

See

illustration.

Parts

below

are

accesible

fram

the

rear

of

the

amplifier

chassis.

Loosen

slide

plate

.

solenoid

stopper

screws

sre

late

BEFORE

e

(C

oP

reverse

solenoid

:

Fix

after

adjustment

AFTER

a

ey

r

—A--

0.5mm

max.

Adjustment

range

is

0.5mm

max.

in

solenoid-off

condition.

Fig.

2-26

2-16

LUBRICATION

Oiling

is

needed

after

every

1,000

hours

of

operation

or

once

a

year

if

the

deck

is

infrequently

used.

For

this

purpose,

TEAC

spindle

oil

(from

TEAC

TZ-255

oil

kit),

Mobil

D.T.E.

Oil

Light,

etc,

are

recom-

mended.

Lubrication

is

normally

not

necessary

except

at

the

points

shown,

.

Place

the

deck

in

the

horizontal

position.

Apply

a

few

drops

of

oil

to

the

respective

spindles

shown,

exclud-

ing

capstans,

then

spread

the

oil

evenly

on

the

spindle

surfaces

using

a

cotton

cloth,

etc.

For

capstans,

apply

a

few

drops

to

the

indicated

position.

|.

After

oiling

all

the

points,

leave

the

deck

for

1

to

2

hours

until

the

oil

is

thoroughly

absorbed.

Nn

PY

Figure

shows

left

side.

Do

also

for

right

side.

tension

roller

inertia

roller

_—_pinch

roller

ge

©&

8

&

Fig.

2-27

capstan

&

(OQ)

~N

2-17

VOLTAGE

CONVERSION

(FOR

GENERAL

EXPORT

MODELS)

Always

disconnect

the

power

line

cord

before

making

these

adjust-

ments.

Frequency

Conversion

Since

the

X

series

uses

DC

motors,

frequency

conversion

is

not

necessary.

Voltage

Conversion.

1.

First

remove

the

two

feet

by

removing

the

screws

in

each

one.

2.

Unscrew

the

left

and

right

sides

of

the

cabinet.

3.

Locate

the

voltage

selector

above

the

power

transformer

as

seen

from

the

rear

of

the

deck.

4,

Remove

the

plug

by

pulling

it

out,

then

re-insert

it

so

that

the

arrow

on

the

plug

is

parallel

with

the

white

line

indicating

the

proper

voltage.

5,

Replace

the

cabinet

and

feet.

Lt

BE]

Aozt

Aovz

nazz

oot

NOTES:

ality.

netize

the

entire

tape

path.

2.

Check

that

the

deck

is

properly

set

for

the

voltage

in

your

lo-

In

general,

adjustments

and

checks

are

done

in

the

order

of

L-

1.

Before

performing

adjustments

and

checks,

clean

and

demag-

(Example:

R371/R372)

X1000R

|

3

ELECTRICAL

ADJUSTMENTS

AND

CHECKS

4.

The

value

of

“dB”

refers

to

OdB

((0.775V).

If

an

AC

voltmeter

calibrated

to

OdB

(1¥)

is

to

be

used,

appropriate

compensation

eZ

ch

then

R-ch.

Double

REF.

Nos.

indicate

L-ch/R-ch.

3-1

MONITOR

PERFORMANCE

should

be

made.

impedance

of

1M-ohms

or

more.

5.

The

AC

voltmeter

used

in

the

procedures

must

have

an

input

MODE/

SIGNAL

ADJUST

ITEM

CONNECTION

|

i

werRucTION

Source

|

(orcHeck))

RESULT

REMARKS

i

1,

Monitor

|

1-1|OSC>ATTto

|

DBX

sw.-OUT

400Hz/—22dB

|

R369

—8dB

(308mV)

|

Line min,

input

A

level

LINE

IN

(L)

(Leave

OUT

up

to

(61,5mV)

level

(L)

f

step

25,

“DBX

PER-

AC

voltmeter

to

|

FORMANCE”

REC

AND

PLAY

|

section).

AMPL.

PCB

term.

|

MONITOR

sw.—

#14,

SOURCE

OUTPUT

cont,—

CAL

‘in

LINE

cont.-MAX

i

MIC

cont.

H

12

”

“

400Hz/—12dB

|

LINE

cont.

”

LINE

spec.

|

(195mv)

(L/R)

input

level

(L)

!

1-3}

but

LINE

spec.

*

R370

i»

LINE

spec.

!

LINE

IN

(L)>

|

input

level

input

level

(R)

\

LINE

IN

(R)

condition

#145

#17

i

2.Output

|

2-1

Fig. 3-1

LINE

spec.

400H2/—12dB

|

R403/R404

|—5dB

(436mV)

4

ievel

input

level

(195mV)

i

condition

i

3.

VU

meter

|

3-1|

Fig.

3-1

LINE

spec.

400H2/—12dB

|

R371/R372

|OVU

|

input

level

(195mv)

on

VU

meter

{

condition

!

4.

MIC

input

|

4-1

]Fig.

3-1,

but

LINE

cont.—MIN

|400Hz/—70dB

|

Check

—5dB

(436mV)

|

MIC

min.

input

level

i

level

LINEIN-+

MIC

|MICcont.—MAx

— |

+248

“|

(195nV

~

308uV)

42

”

400H2/—60dB

|

MIC

cont.

”

MIC

spec.

input

level

{0.775mV)

(LR)

LINE

cont.—spec.

IMPORTANT:

Do

not

position

(Item

1-2)

-

.

7

disturb

these

cont’s

MIC

cont.—MIN

during

later

checks.

osciLroscore

OSCILLATOR

pisTORTION

ANALYZER

O

|

3

faaihs

SPKR

OSCILLOSCOPE

wa]

ooo

O

3

sPKR

errr

Paes

OSCILLATOR

H

awe

“) rs

oe

(a

se]

Sh

Ac

VOLTMETER

oe

ver]

Jtor

AC

VOLTMETER

H

ATTENUATO!

st

ion

oa

ATTENUATOR

DECK

|

[atewatos

Teck

|

316

6

:

ima

'

C6

63]

[under

TEST

Re

eh

under

TEST

a

}

® a o

°

LINE

IN

oureur

Ling

in

ourrut

Fig.

3-1

Basic

connection

Fig.

3-2

Connection

for

phase

check

3-2

PLAYBACK

PERFORMANCE

TEAC

test

tapes:

For

playback

YTT-1002:

For

9.5cm/s

or

3-3/4ips,

LHI

YTT-1003:

For

19cm/s

or

7-1/2ips,

LHL

YTT-1052:

For

9.5cm/s

or

3-3/4ips,

EE

YTT-1053:

For

19cm/s

or

7-1/2ips,

EE

For

recording

alignment

(blank)

YTT-8013:

For

LHIL

YTT-8053:

For

EE

(50Hz

~

18kHz)

MODE/

SIGNAL

ADJUST

ITEM

CONNECTION

|

inerpucTION

Source:

|

ircnees|

RESBLT

REMARKS

5.

Playback

|

5-1]

Fig.

3-2

Do

for

both

FWD

|

YTT-1003

Azimuth

__|

Phase:

head

&

REV

heads

(16kHz/—10d8)

|

adj.

screw/s

|

within

45°

on

azimuth

MONITOR

sw.

—

of

head

oscilloscope

TAPE

(Fig.

2-13)

|

(Fig.

3-3)

SPEED

sw.—HIGH

TAPE

SELECT.—

LHI

6.

Playback

|

6-1|

Fig.

3-1

FWD

&

REV

YTT-1003

R313/R314

|—SdB

(436mV)

|

Spec.

PB

condition

level

OUTPUT

cont.—

|

(400Hz2/0dB8)

|

(FWD)

CAL

R315/R316

SPEED

sw.—HIGH

(REV)

62)»

OUTPUT

cont.—

”

Check

+1dB

+2dB

Max.

output

level

MAX.

(690mv

~

1,09V)

63)

OUTPUT

cont.

”

—5dB

(436mV)

|

Spec.

PB

condition

CAL

IMPORTANT:

Do

not

a

disturb

OUTPUT

cont.

during

later

checks.

7.

VU

meter

|

7-1]

Fig. 3-1

FWD

YTT-1003

Check

OVU

#1VU

Spec.

PB

condition

|

(400Hz/0d8)

‘on

VU

meter

8.

Frequency

|

8-1|

Fig. 3-1

FWD

&

|SPEED—

|

YTT-1003

R327/R328

|

Fig.

3-5

response

REV

|HIGH

(FWD)

R329/R330

TAPE

(REV)

h-4-------4

SELECT.}~-—~-|—-—

ae

B82)

LHD

|SPEED—

|

YTT-1002

R333/R334

|

Fig.

3-6

Low

(FWD)

R335/R336

(REV)

83)

FWD

&

|SPEED-

|

YTT-1053

Check

Fig.

3-5

REV

|HIGH

84)

6

TAPE

|SPEED—

|

YTT-1052

3-6

SELECT.)

LOW

-EE

9.

Phase

shift

|

9-1

|

Fig,

3-2

FWD

&

|SPEED-

|

YTT-1003

Check

Phase:

REV

HIGH

bi

within

45°

on

oscilloscope

tape

eraser)

92)

”

SPEED—

|

YTT-1002

”

Low

(50Hz

~

10kHz)

10.

PHONES

|10-1|Fig.

3-4

Spec,

PB

condition

|

YTT-1003

Check

~24dB

+2d8

|

When

OUTPUT

terminal

output

(400Hz/0dB)

(38.8mv

~

is

at

—5dB

level

61.5mV)

{at

PHONES

jack)

11.

Signal

to

|

11-1]

Fig. 3-1

FWD

&

REV

YTT-8013

Check

LH4,

-

-Ratio

of

spec.

—5dB

to

noise

LH

and

EE

and

HIGH:

50dB

|

noise

ratio

Spec.

PB

condition

|

YTT-8053

LOW:

49dB

|

-Change-over

the

polarity

Use

fully

EE

of

the

AC

Line

plug.

The

erased

tape

HIGH:

52dB

|

worse

reading

should

be

(Use

bulk

LOW:

52dB

|

within

spec.

X-1000R

AC

Voltmeter

0°

(IN

PHASE)

45°

90°

180°

—

i

oe)

4

DECK

under

TEST

:

i

R

i

oe

oa

Eh

|

PHONES

en

TEST

LOAD

RESISTORS

Fig.

3-3

Confirming

phase

relationship

Fig.

3-4

Connection

for

PHONES

level

check

TEAC

test

tape:

YTT-8013:

For

recording

alignment

(blank)

for

LHI

'

3-3

RECORDING

PERFORMANCE

YTT-8053:

For

recording

alignment

(blank)

for

EE

MODE/

SIGNAL

ADJUST

ITEM

CONNECTION

|

inetauCTION

Source

|

torcHeck)|

RESULT

REMARKS.

12.

Bias

trap’

|

12-1]

AC

voltmeter

Rec-pause

mode

303/304

|

Min.

reading

Bias

freq.:

between

BIAS

-

100kHz

#5kHz

TRAP

TP

(TP1/

|

TP2)

&

GND

:

12-2)

Fig.

3-1

Rec-pause

mode

reading

i

MONITOR

sw.—

(—45dB

or

more

|

TAPE

-

‘i

(4.36mV

or

less))

1

OUTPUT

con.—

i

CAL

|

123|

» ”

-

Check

VU:

no

deflection|

i

13,

Record

|

13-1|Fig.

3-2

Do

for

both

FWD

|

10kHz/—32dB

|

Azimuth

|

Phase:

head

&

REV

heads

(19.5mv)

adj.

screw/s

|within

45°

on

azimuth

MONITOR

sw.—

of

head

oscilloscope

TAPE

(Fig.

2-13)

|(Fig.

3-3)

14,

Record

|

14-1|

Fig,

3-1

|

FWD

&

REV

|

Test

tape—

7kHz/—22dB

|

R515/R516

|

Over-bias

value

_|-Simultaneous

monitoring

bias

SPEED

YTT-8053

(61.5mv)

(FW)

3dB

+108

-First

set

adjustor

fully

i

sw.LOW

|

TAPE

SE-

R517/R518

|

(from

peak)

CCW

(()),

then

adjust.

|

__|____|]monitorn

|tector-cee

{|

Rev)

of

14.2)

[SM—TAPE

|Tect

tape—

”

F519/R520

|

Over-bias

value

YTT-8013

(FWD)

4dB

#108

TAPE

SE-

R521/R522

|

(from

peak)

LECTOR-LHI

(REV)

18.

Record

|

15-1]Fig.

3-1

‘Same

as

14-2

400H2/—12d8

|

R429/R430

|—5dB

(436mV)

Spec.

REC

condition

i

level

SPEED

sw.—

(195mv)

(FWD)

i

HIGH

R431/R432

(REV)

16,

Distor-

|

16-1)

Fig. 3-1

Same

as

14-1

and

|

1kHz/—12dB_

|

Check

0.8%

or

less

tion

14-2,

but

SPEED

|

(195mv)

(w/LHI,

EE}

sw.—HIGH

17.

Signal

to

[17-1]

Fig. 3-1

FWD

&

REV

1kHz/—12dB

|

Check

LHO

Ratio

of

spec.

—5dB

noise

MONITOR

sw.—

(195mv)

{

HIGH:

48dB.

_|to

noise

ratio

TAPE

then

LOW:

464B

HIGH

&

LOW

No

signal

EE

i

LHD

recording

:

YTT-8013

:

EE

YTT-8053

18.

Erase

|

18-1)

Fig.

3-1

FWD

&

REV

1kHz/—2dB

Check

OUTPUT:

-Reference

output

level

:

efficiency

switch

on

TAPE

SELECT.

(615mv)

—63dB

or

more

|+5dB

1kHz

filter

-EE

(#10VU)

(548uV

or

less

|-The

worst

value

should

MONITOR

sw.—_

|

then

erasing

{68dB

min.

ratio)

|be

within

spec.

?

TAPE

EE

YTT-8053

SPEED

sw.-HIGH

MODE/

SIGNAL

ADJUST

ITEM

CONNECTION

|

ineraucTION

source

|

(ercHeck}|

RESULT

REMARKS

19.

REC

19-1|

Fig.

3-1

FWD

&

REV

1kH2/—2dB

Check

OUTPUT:

-Reference

output

fevel:

MUTE

switch

on

Spec.

REC

(615mV)

—60d8

or

more

|

+5dB

function

kHz

filter

condition

(#10VU)

(775pV

or

less)

|

-The

worst

value

should

rec-mute

mode

then

record

(65dB

min.

be

within

spec,

muting

ratio)

20.

Frequen-

|

20-1|Fig.

3-1]

FWD

&

REV

|

SPEED

sw.—

|

Requird

L305/L306

Fig.

3-8

Also

it

is

possible

to

cy

MONITOR

sw.—|

LOW

signal/

(FWD)

fine-adjust

by

the

response

TAPE

—32dB8

L307/L308

record

bias

adjustors

(see

TAPE

SELE-

(19.5mv)

(REV)

item

14.)

if

this

respec-

CTOR-EE

tive

specified

record

Test

tape—

bias

setting

ranges

are

kept.

20-3}

«

|TAPESELE-

|SPEED

sw.—

” ”

Fig.

3-8

CTOR-LHO

=|

LOW

Test

tape—

VTEBOIS:)

2)

Sa

ve

gtulee

aya

ee

br

ate

Is

A

at

20-4,»

”

SPEED

sw.—

”

Fig.

3-7

HIGH

21.Phase

|

21-1|Fig.

3-2

FWD

&

REV

40Hz

~

16kH2/

|

Check

Phase:

shift

Spec.

REC

—32dB

within

45°

on

condition

{19.5mV)

oscilloscope

SPEED

sw.—

(40Hz

~

16kH2)

HIGH

(Fig.

3-3)

22.

LHI

22:1|Fig.

3-1

FWD

20kHz/—32dB

|

Check

When

TAPE

posi-

Spec.

REC

(19.5mv)

SELECTOR

tion

condition

sw

is

changed

check

Test

tape—

LHI

LHI,

YTT-8013

output

level

SPEED

sw.—

should

raise

HIGH

+3dB

+1dB

23.

Adjacent

|

23-1]

Fig.

3-1

FWD

record.

125H2/—12dB

For

FWD

record.

track

Spec.

REC

(195mv)

crosstalk

condition

o

7

SPEED

sw.—-HIGH

TAPE

SELECTOR

23-2)"

REV

playback

the

Check

At

both

Land

portion

recorded

Rch

above

125Hz:

—45dB

a

lor

more

(4.36mV

lor

less)

(40dB

min.

ratio)

23-3)

0"

Interchange

R

&

L.

” ”

reels

then

do

FWD

-

playback

23-4)

Repeat

23-1

through

23-3,

but

interchange

FWD

and

REV.

For

REV

record.

24.

Channel

|

24-1|

Fig. 3-1

Same

as

23-1

L:

1kHz/—12dB

|

Check

R,

—55dB

or

For

FWD

record.

separa-

switch

on

(195mV)

Jor

more

tion

1kHz

filter

R:

No

signal

(1.38mV

or

less)

record,

(50dB

min.

ratio)

24-2)

”

L:

No

signal

record.

24-3

R:

1kHz/—12dB

For

REV

record.

X-1000R

|

NOTE:

34

DBX

PERFORMANCE

Test

this

performance

only

after

you

are

sure

that

the

“3-6

DBX

PCB

ADJUSTMENT

is

correct.

MODE/

SIGNAL

ADJUST

ITEM

CONNECTION

|

erRUCTION

SOURCE

|

(orcHEcK))

RESULT

REMARKS

25.

Encoder

|25-1/OSC>

ATT

to

|

DBX

sw.—OUT

1kHz/—12dB

|

Check

—8dB

(308mV)

level

LINE

IN

(both

=|

MONITOR

sw.—

|

(195mv)

L-

&

Rch’s)

SOURCE

OUTPUT

cont.—

AC

voltmeter

CAL

to

REC

AND

LINE

cont.—Spec,

PLAY

AMPL.

position

(item

1-2)

PCB

term.

#46

|

MIC

cont.—MIN

[sese|

se

ABs

Sees

(leeches

Calpe

eer

oee)

Pry

ee

een

peepee

ea

ne

cee

ee

25-2

”

Same

as

above,

”

R852/R852

|—8dB

20.5d8

|

(291mV

~

327mV)

25-3]

Repeat

25-1

~

25-2

by

changing

to

REC

AND

PLAY

AMPL.

PCB

term.

#47.

IMPORTANT:

Do

not

disturb

all

MIC,

LINE

and

OUTPUT

controls

during

later

checks.

26.

Decorder

|

26-1)

Fig.

3-1

FWD

only

1kHz/—12dB

Check

Note

the

measured

level

Test

tape—

(195mv)

output

as

YTT-8013

reference,

DBX

sw.—OUT

SPEED

sw.—HIGH

REC

MODE—ON

TAPE

SELECT.

sw.—LHI

MONITOR

sw.—

TAPE

26-2

fe

Same

as

above

Se

R652/R652

|+0.5dB

deviation

but

from

ref.

i

DBX

sw.-IN.

27.

Frequen-

|27-1|Fig.

3-1

Same

as

20-1

~

Required

signal,

|

Check

Figs.

3-9

to

3-10.

cy

20-4,

but

—32dB

response

DBX

sw.—IN

(19.5mV)

28.

Signal

28-1

|Fig.

3-1

FWD

&

REV

1kHz/—12dB

Check

LHO

Ratio

of

spec.

—-5dB

to

noise

DBX

sw.—IN

(195mV)

HIGH:

65dB

noise

ratio

REC

MODE

sw.—

then

LOW:

65dB

ON

No

signal

EE

MONITOR

sw,—

recording

HIGH:

65dB

TAPE

LOW:

65d8

SPEED

sw.—HIGH

&

LOW

{

LHI

YTT-8013

cE

YTT-8053

29.

Distor-

[29-1

Fig.

3-1

Same

as

28-1

tkH2/—12d8

|

Check

0.8%

or

less

OVU

input

level

|

tion

but

(195mV)

(w/LHO,

EE)

|

SPEED

sw.—HIGH

i

only

i

29.2,»

”

1kH2/+8dB

”

13%

or

ess

20VU

input

level

(1.95V)

(w/LHII,

EE)

3-5

FREQUENCY

RESPONSE

3-5-1

PLAYBACK

44

ag

5

+348

°

rt

as

-4-348

(ap)

40

400

22k

26k(Hz)

Fig.

3-5

Playback

frequency

response

(19cm/s)

va

44343

fo}

-4)

1-443

(4B)

40

400

14k

18k(Hz)

Fig,

3-6

Playback

frequency

response

(9.5cm/s)

|

352

OVERALL

=

+4

ree

{

+2

:

1

i

1

!

-2

ea

i

4

Tale

4aas

i

(4B)

i

40

400

20k

30k

(Hz)

|

26k

i

Fig.

3-7

Overall

frequency

response

(19cm/s)

:

+4

1

+2

iia

+3463

}

°

4

i

-2

ot

H

-4

“4-408

i

(dB)

i

,

i

40

400

16k

22k

(Hz)

Hl

20k

Fig.

3-8

Overall

frequency

response

(9.5cm/s)

3-5-3

OVERALL

WITH

,¢

DBX

IN

yee

°

4+—

-6

et

(dB)

i

40

400

20k

30k

(Hz)

i

26k

Fig.

3-9

Overall

frequency

response

with

DBX

IN

(19cm/s)

+6

"1

+608

Hl

co)

+

t

6

EN

V-8dB

40

400

16k_

22k(Hz)

20k

Fig.

3-10

Overall

frequency

response

with

DBX

IN

(9.5cm/s)

——

LH.

YTT-1003

—-77

EE,

YTT-1053

——

LH,

YTT-1002

€E,

YTT-1052

——

LH,

YTT-8013

EE,

YTT-8053

——

LH,

YTT-8013

EE,

YTT-8053

——

LH,

YTT-8013

EE,

YTT-8053

——

LH,

YTT-8013

-

EE,

YTT-8053

3-6

DBX

PCB

ADJUSTMENT

NOTES:

1.

This

section

adjustment

is

not

usually

needed

unless

an

ad-

justor(s)

have

been

changed

or

a

component(s)

on

the

PC

board

have

sustained

damage,

since

the

PC

board

has

been

precisely

adjusted

in

the

factory.

2.

Turn

the

deck

OFF

to

prevent

accidental

damage

when

removing

or

replacing

PC

board.

3-6-1

ENCODER

ADJUSTMENT

(1)

(2)

(3)

(4)

(5)

AC

VOLTMETER

DBX

PCB

Low

distortion

|

OSCILLOSCOPE

AF

OSCILLATOR

702-115)

eu

lourrur

:

P703-1(5)

ATTENUATOR

©)

rs

P701-1(5)

_

TP-S(TP.4)

DISTORTION]

|

@@@

®

@4

L@@®

GND

‘chin

METER

©@®

Distortion

factor:

0.02%

or

less

|

Output

level:

3V

or

more

Fig.

3-11,

Connection

for

encoder

adjustment

Preparation

1.

Disconnect

wires

(with

connector)

from

connectors

P701

~

P703,

then

make

connections

as

shown

on

Fig.

3-11.

(Each

connector's

1

and

5

correspond

L-ch

and

R-

ch

respectively.)

2.

Preset

R737/R738, R747/R748,

R757/R758

and

R763/

R764

approximately

to

the

center

position.

Input

setting

3.

Apply

a

100Hz

input

signal

to

P701-1(5),

then

adjust

input

level

so

that

output

from

P702-1(5)

becomes

300mV

(-8.24dB).

RMS SYM

adjustment

4,

Adjust

R765/R766

so

that

output

waveform

at

TP3/TP4

becomes

a

clear

200Hz

sine-wave

on

the

oscilloscope.

RMS

time

constant

adjustment

5.

Adjust

R747/R748

so

that

output

from

TP3/TP4

becomes

385uV

(—66.1dB).

Encoder

nominal

level

adjustment

6.

Apply

a

1kHz

input

signal

to

P701-1(5),

then

adjust

input

level

so

that

output

from

P702-1(5)

becomes

300mV

(-8.24dB).

7,

Adjust

R737/R738

so

that

output

from

P703-1(5)

becomes

300mV

(—8.24dB).

(6)

VCA SYM

adjustment

8.

After

adjustments

above

are

effected,

adjust

R757/R758

so

that

the

distortion

meter

indicates

minimum

value

(0.2%

or

less).

(7)

Frequency

response

check

9.

Check

that

when

input

signal

is

100Hz,

then

switched

to

10kHz,

the

output

from

P703-1(5)

becomes

212mV

~

238mV

(-11.3dB

~

—10.3dB),

then

165mV

~

185mV

(—13.4dB

~—12,4dB)

respectively.

(8)

Encoder

effect

check

-

1

10.

Check

that

when

input

signal

is

changed

to

1kHz

at

300uV

{—68.2dB)

from

condition

in

paragraph

(5),

output

from

P703-1(5)

becomes

8.95mV

~

10.1mV

(-38.7dB

~

~37.7dB).

(In

this

case,

measurement

should

be

done

using

the

1kHz

band-pass

filter).

(9)

Encoder

effect

check

-

2

11,

Check

that

when

input

signal

is

changed

to

1kHz

at

3V

(11.8dB)

from

condition

in

paragraph

(5),

output

from

P703-1(5)

becomes

895mV

~

1.01V

(1.25dB

~

2.30dB).

12.

At

this

time,

the

distortion

factor

should

be

0.3%

or

less,

(1)

(2)

(3)

(4)

(5)

3-6-2

DECODER

ADJUSTMENT

AC

VOLTMETER

Low

distortion

AF

OSCILLATOR

©)

©®@

Distortion

factor:

0.02%

or

less

Output

level:

3V

or

more

;

P601-1(4)

GND

ATTENUATOR

a

DBXx

PCB

FZ

ie)

OSCILLOSCOPE

loureut

iveur|

‘TP.A(TP.2)

GND

¢}———_}4

DISTORTION

METER

P602-1(4)

)

|

P603-1(4)

INPUT

Fig.

3-12

Connection

for

decoder

adjustment

Preparation

1.

Disconnect

wires

(with

connector)

from

connectors

P601

~

P603,

then

make

connections

shown

on

Fig.

3-12.

(Each

connector’s

1

and

4

correspond

L-ch

and

R-ch

respectively.

2.

Preset

R637/R638,

R647/R648,

R657/R658

and

R663/

R664

approximately

to

the

center

position.

Input

setting

3.

Apply

a

100Hz

input

signal

to

P601-1(4),

then

adjust

input

level

so

that

output

from

P602-1(4)

becomes

300mV

(-8.24dB).

RMS

SYM

adjustment

4,

Adjust

R665/R666

so

that

output

waveform

at

TP1/TP2

becomes

a

clear

200H2

sine-wave

on

the

oscilloscope.

RMS

time

constant

adjustment

5.

Adjust

R647/R648

so

that

output

from

TP1/TP2

becomes

385nV

(—66.1dB).

Decoder

nominal

level

adjustment

6.

Apply

a

1kHz

input

signal

to

P601-1(4),

then

adjust

input

level

so

that

output

from

P602-1(4)

becomes

300mV

(—8.24dB).

7.

Adjust

R637/R638

so

that

output

from

P603-1(4)

becomes

300mV

(—8.24dB).

(6)

VCA

SYM

adjustment

8.

After

the

paragraph

adjustments

above

are

effected,

adjust

R657/R658

so

that

the

distortion

meter

indicates

minimum

value

(0.2%

or

less).

(7)

Frequency

response

check

9.

Check

that

when

input

signal

is

100Hz,

then

switched

to

10kHz,

the

output

from

P603-1({4)

becomes

475mV

~

599mV

(-4.25dB

~

—2.24dB),

then

789mV

~

993mV

(1.56dB

~

2.15dB)

respectively.

(8)

Decoder

effect

check

-

1

10.

Check

that

when

input

signal

is

changed

to

1kHz

at

9.48mV

(—38.2dB)

from

condition

in

paragraph

(5),

output

from

P603-1(4)

becomes

267u.V

~

336uV

(—69.3dB

~

-67.30B).

(In

this

place,

measurement

should

be

done

using

the

1kHz

band-pass

filter).

(9)

Decoder

effect

check

-

2

11.

Check

that

when

input

signal

is

changed

to

1kHz

at

948mV

(1.75dB)

from

condition

in

paragraph

(5),

output

from

P603-1(4)

becomes

2.67V

~3.37V

(10.7dB

~

12.808).

3-7

ADJUSTMENT

AND

TEST

POINT

LOCATIONS

Fig.

3-13

REC

AND

PLAY

AMP

PCB

i

L303/L304

Bias

trap

(record)

R369/R370

Monitor

level

i

L305/L306

Record

EQ

(FWD)

R371/R372

VU

meter

i

L307/L308

Record

EQ

(REV)

R403/R404

Output

level

}

R313/R314

Playback

level

(FWD)

R429/R430

Record

level

(FWD)

'

R315/R316

_Playback

level

(REV)

R431/R432

Record

level

(REV)

:

R327/R328

Playback

EQ

(HIGH,

FWD)

R515/R516

Record

bias

for

EE

(FWD)

R329/R330

Playback

EQ

(HIGH,

REV)

R517/R518

Record

bias

for

EE

(REV)

R333/R334

Playback

EQ

(LOW,

FWD)

R519/R520

Record

bias

for

LH

II

(FWD)

R335/R336

Playback

EQ

(LOW,

REV)

R521/R522

Record

bias

for

LH

I

(REV)

R637/R638

Nominal

level

(DECODER)

R647/R648

RMS

time

constant

(DECODER)

R657/R658

VCA SYM

(DECODER)

R665/REE6

RMS

SYM

(DECODER)

R737/R738

Nominal

level

(ENCODER)

R747/R748

RMS

time

constant

(ENCODER)

R757/R758

VCA

SYM

(ENCODER)

R765/R766

RMS

SYM

(ENCODER)

eA

:

Fig.

314

DBX

PCB

.

2

@he

@

ae

eee

a

ree

«8

)

ee

Le

One

ES

-

re

=

Gor

——

9)

5

8)

4

EXPLODED

VIEWS

AND

PARTS

LIST

EXPLODED

VIEW-1

Teac X-1000R User manual

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