Sony TC-WR701ESL Bedienungsanleitung

TC-WR/O1ES/WR735S

SERVICE

MANUAL

This

photo

TC-WR701ES.

Model

TC-WR7O1ES

Canadian

Model

AEP

Model

Australian

Model

TC-WR735S

MERE

Cagserie

Model

Name

Using

Similar

Mechanism

TC-WR690/WR790

TCM-190RB11C

DECK

TCM-190RB11C

Tape

Transport

Mechanism

Type

SPECIFICATIONS

4-track

2-channel

stereo

Fast

winding

time

Approx.

sec.

(with

Sony

C-60

cassette)

Bias

bias

Signal-to-noise

ratio

(at

peak

level

and

weighted)

Recording

system

Cassette

(Dolby

off)

S/N

ratio

improvement

(approximate

values)

with

Dolby

on:

kHz;

kHz

with

Dolby

on:

500

Hz;

kHz

with

Dolby

on:

100

Hz;

kHz

0.4%

(with

Type

160

nWb/m,

315

Hz,

3rd

H.D.)

1.8%

(with

Type

IV,

250

nWb/m,

315

Hz,

3rd

H.D.)

Frequency

response

(Dolby

off)

Harmonic

distortion

19,000

(+3

dB,

IEC)

13,000

{+3

(-4

dB)

recording]

Type

cassette

18,000

(+3

dB,IEC)

[Type

leassette

(49

6B.IEC)

16,000

(+3

dB,IEC

Type

Sony

METAL-S

Type

Sony

UX-S

Typel

Sony

HF-S

Wow

and

flutter

0.13%

W.Peak

(IEC)

0.07%

W.RMS

(NAB)

0.18%

W.Peak

(DIN)

Inputs

Line

inputs

Sensitivity

0.16

(phono

jacks)

Input

impedance

ohms

Outputs

Line

outputs

(phono

jacks)

Rated

output

level

0.5

load

impedance

ohms

Load

impedance

Over

ohms

Output

level

load

impedance

ohms

120

AC,

(US,

Canadian

model)

220—230

AC,

50/60

(AEP,

German

model)

240

AC,

50/60

(Australian

model)

Headphones

(stereo

phone

jack)

General

Power

requirements

Power

consumption

Dimensions

Approx.

430X135

X295

(w/h/d)

(17

X5%/,X115/.

inches)

including

project-

ing

parts

and

controls

Mass

Approx.

4.8

(10

Ibs

oz)

Supplied

accessories

Audio

connecting

cords

(2)

Design

and

specifications

are

subject

change

without

notice.

STEREO

CASSETTE

DECK

SONY.

For

higher

quality

recording/playback

The

Dolby

PRO*

system

which

improves

the

linearity

the

tape’s

high-range

response

during

recording.

—

and

type

Dolby

NR*

systems

which

reduce

tape

noise.

Automatic

calibration

each

deck

which

ensures

optimum

recording

conditions

bring

out

the

best

every

tape.

For

your

convenience

Automatic

tape

type

detection

during

playback

and

recording.

The

Multi-AMS

and

Memory

Play

functions

which

provide

easy

access

desired

selection.

relay

function

for

long

recording

and

playback.

Auto

play

function

which

automatically

starts

playback

after

tape

rewinding

start.

Synchronized

dubbing

normal

high

speed.

Simultaneous

Recording

function

for

the

simultaneous

recording

the

same

source

cassettes

both

decks.

For

easier

operation

Twin

easy-to-read

linear

counters

which

show

the

elapsed

recording

playing

time

each

deck.

optional

remote

commander

which

allows

the

remote.

control

various

operations.

Dolby

noise

reduction

and

Pro

headroom

extension

manufactured

under

license

from

Dolby

Laboratories

Licensing

Corporation.

Pro

originated

Bang

Olufsen.

“DOLBY”,

the

double-D

symbo!

and

“HX

PRO”

are

trademarks

Dolby

Laboratories

Licensing

Corporation.

MODEL

IDENTIFICATION

(Specification

Label)

TC-WR701ES

TC-WR735S

SONY

move

10.

(2777

STEREO

CASSETTE

DECK

UMMM

US,

Canadian

model:

120V

60Hz

33W

AEP,

German

model:

220-—-230V~50/60Hz

33W

Australian

model

240V~50/60Hz

SAFETY

CHECK-OUT

(US

Model)

After

correcting

the

original

service

problem,

perform

the

following

safety

check

before

releasing

the

set

the

customer:

Check

the

antenna

terminals,

metal

trim,

‘“‘metallized”

knobs,

screws,

and

all

other

exposed

metal

parts

for

leakage.

Check

leakage

described

below.

LEAKAGE

TEST

The

leakage

from

any

exposed

metal

part

earth

ground

and

from

all

exposed

metal

parts

any

exposed

metal

part

having

return

chassis,

must

not

exceed

0.5mA

(500

microampers).

Leakage

current

can

measured

any

one

three

methods.

commercial

leakage

tester,

such

the

Simpson

229

RCA

WT-540A.

the

manufacturers’

instructions

use

these

instru-

ments.

battery-operated

milliammeter.

The

Data

Precision

245

digital

multimeter

suitable

for

this

job.

Measuring

the

voltage

drop

across

resistor

means

VOM

battery-operated

volt-

meter.

The

‘“‘limit”

indication

0.75

analog

meters

must

have

accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

passive

VOM

that

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

range

are

suitable.

(See

Fig.

Exposed

Metal

Parts

Set

voltmeter

(0.75

Earth

Ground

Fig.

Using

voltmeter

check

leakage.

TABLE

CONTENTS

Section

Title

Page

GENERAL

T-t,

Identify

ime:

the:

Parts

s:%

eroeu

iia

uted

ase

tae

eses

aes

DISASSEMBLY

Cassette

Lid

Assy

sevics

Leva

ccc

nuh

oases

eceadeeeae

Bronte

Anel

Assy

sista

kein

hewiee

ers

Mechanism

Deck

<s42

ose

seas

jeepers

Capstan

Motor,

Reel

Motor

(1)

.................006,

Capsten

Motor,

Reel

Motor

(2)

........-.0.

cece

eeee

Head,

Pinch

Roller

................5.

sal

MECHANICAL

ADJUSTMENTS..................-

ELECTRICAL

ADJUSTMENTS

.............-..-..

DIAGRAMS

Circiit

Beards

LOcanon:

2:22

ssecvesieesSiiees

Gas

Printed

Wiring

Boards—Main

Section—

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

Schematic

Diagram—Main

Section—

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

Schematic

Diagram—Panel

Section—

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

Printed

Wiring

Boards—Panel

Section—............

Semiconductor

Lead

Layouts

.........-..-...00e0e

EXPLODED

VIEWS

Cabinet

Section:

isa<

bistebadrae

ele

Geese

wes

Front

Panel:

Section:

42254404

Gee

iver

Gi5024

ois

Méchanisin

Section

(1).

acasacdnwa'e

owas

eee

Mechanism

Section

(2)

.........-.

eee

eens

ELECTRICAL

PARTS

LIST

...............-..-.--

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

MARK

DOTTED

LINE

WITH

MARK

THE

SCHEMATIC

DIAGRAMS

AND

THE

PARTS

LIST

ARE

CRITICAL

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH.

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

PUB-

LISHED

SONY.

ATTENTION

COMPOSANT

AYANT

RAPPORT

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

MARQUE

SUR

LES

DIAGRAMMES

SCHEMATIQUES

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

SECURITE

FONCTIONNEMENT.

REMPLACER

CES

COM-

POSANTS

QUE

PAR DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

MANUEL

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

SECTION

GENERAL

This

section

extracted

instruction

manual.

Front

Panel

For

details,

refer

the

page

number(s)

indicated

parentheses.

{1]

POWER

switch

(2]

Deck

[3]

(eject)

button

(deck

(4]

MPX

(multiplex)

FILTER

ON/OFF

switch

(36)

[5]

COUNTER

buttons

(deck

(30)

RESET

button

MEMORY

button

[6]

AUTO

CAL

(calibration)

buttons

(DECK

DECK

(48,50)

Display

panel

[8]

DOLBY

(Dolby

noise

reduction)

switch

(18,22,32,42,44)

[9]

BALANCE

control

(32)

REC

(recording)

LEVEL

control

(32,36)

11]

COUNTER

buttons

(deck

(30)

RESET

button

MEMORY

button

Remote

control

sensor

You

can

remotely

control

this

cassette

deck

with:

—

remote

commander

that

came

with

Sony

amplifier

receiver

has

the

mark

and

cassette

deck

contro!

capability.

—

Any

optional

Sony

remote

commander

with

the

fil

mark

and

cassette

deck

control

capability.

Deck

[13]

Tape

operation

buttons

(stop)

button

(jeftward

fast

winding)

(Multi-AMS**)

button

(reverse

play)

button

(forward

play)

button

(rightward

fast

winding)

(Multi-

AMS"*)

button

PAUSE

button.

REC

MUTE

(record

muting)

button

(46)

REC

(recording)

button

(eject)

button

(deck

[15]

SYNCHRO

DUBBING

buttons

(52)

HIGH

speed

button

NORMAL

speed

button

A+B

REC

(simultaneous

recording)

button

(42)

HEADPHONES

jack

(stereo

phone

jack)

DIR

(direction)

MODE

switch

(18,22,32,42,44,52)

AMS

abbreviation

for

Automatic

Music

Sensor.

SECTION

DISASSEMBLY

Note:

the

disassembly

procedure

the

numerical

order

given.

2-1.

CASSETTE

LID

ASSY

Push

the

EJECT

button.

2-2.

FRONT

PANEL

ASSY

Remove

the

connectors.

2-3.

MECHANISM

DECK

BVTT2.6x8

mechanism

deck

2-4.

CAPSTAN

MOTOR,

REEL

MOTOR

(1)

PTPWH2

X23

When

installing,

pull

the

belt

and

put

arround

claws.

When

installing,

pull

the

capstan

belt

and

put

arround

claws.

2-5.

CAPSTAN

MOTOR,

REEL

MOTOR

(2)

connector

connectors

B2.6x3

board

reel

motor

belt

(FR)

claws

2-6.

HEAD,

PINCH

ROLLER

torsion

spring

lever

(pinch

lever

FWD)

assy

lever

(pinch

lever

REV)

assy

SECTION

MECHANICAL

ADJUSTMENTS

PRECAUTION

Clean

the

following

parts.

with

denatured

alcohol-

moistened

swab:

record/playback/erase

head

pinch

roller

rubber

belts

idlers

capstan

Demagnetize

the

record/playback

head

with

head

demagnetizer.

(Head

demagnetizer

not

approach

for

the

erase

head.)

not

use

magnetized

screwdriver

for

the

adjustment.

After

the

adjustments,

apply

suitable

locking

compound

the

parts

adjusted.

The

adjustments

should

perfomed

with

the

rated

power

supply

voltage

unless

otherwise

noted.

Torque

Measurement

Torque

meter

Meter

reading

CQ-102C

65g¢cm

Forward

(0.42

0.90

oz*inch)

6g*cm

(0.014

0.08

oz*inch)

65g*cm

(0.42

0.90

oz*inch)

6g*cm

(0.014

0.08

oz*inch)

120g*cm

(0.98

1.67

oz*inch)

Forward

CQ-102C

back

tension

CQ-102RC

Reverse

CQ-102R

back

tension

Forward,

Reverse

SECTION

ELECTRICAL

ADJUSTMENTS

PRECAUTION

The

adjustment

should

performed

the

publication.

(Be

sure

make

playback

adjustment

first.)

The

adjustment

and

measurement

should

performed

for

both

L-CH

and

R-CH.

Switch

position

DOLBY

switch

OFF

DIR

MODE

switch

Standard

record

position

Deliver

the

standard

input

signal

level

input

jack

and

set

the

REC

LEVEL

control

obtain

the

standard

output

signal

level

follows.

—Record

Mode—

OSC

Standard

Input

Level

Input

terminal

LINE

10kQ

0.25V

(—10dB)

source

impedance

input

signal

level

Standard

Output

Level

Output

terminal

LINE

OUT

47kO,

load

impedance

output

signal

level

0.44V

(—5dB)

Test

Tape

[Tope

Gontents—«CSOCtCite

P-4-A100

10kHz,

—10dB

Azimuth

Adjustment

P-4-L300

315Hz,

0dB

Level

Adjustment

WS-48B

3kHz,

0dB

Tape

Speed

Adjustment

Record/Playback

Head

Azimuth

Adjustment

Procedure

Reverse

Playback

Mode

test

tape

P-4-A100

(10kHz,

—10dB)

LINE

OUT

Turn

the

adjustment

screw

for

the

maximum

output

levels.

these

levels

notmatch,

turn

the

adjustment

screw

until

both

output

levels

match

together

within

1dB

R-CH

screw

peas

position

L-CH

RCH.

“Screw.

peak

angle

Playback

Mode

test

tape

P-4-A100

(10kHz,

—10dB)

47kQ

oscilloscope

135° 180°

Nerve”

good

wrong

Change

the

forward

playback

mode

and

repeat

the

steps

Oia

After

the

adjustment,

lock

the

adjustment

screws

with

suitable

locking

compound.

Adjustment

Location

—record/playback

head—

)_°

_@|

forward

side

reverse

side

adjustment

screws

Tape

Speed

Adjustment

Perform

high

speed

adjustment

before

normal

speed

adjust-

ment.

Procedure

—Forward

Playback

Mode—

test

tape

WS-48B

(3kHz,

OdB)

frequency

counter

LINE

OUT

(high

speed

adjustment)

Short

the

connector

TP1

(pins

and

@).

(test

mode)

Keep

pressing

the

SYNCHRO

DUBBING

HIGH

swit-

ch.

Adjust

each

RV72

that

the

frequency

counter

reading

becomes

within

adjustment

limits

6,000+20Hz

both

deck

and

deck

Change

the

reverse

playback

mode

and

repeat

the

steps

and

(normal

speed

adjustment)

After

adjustment,

open

the

connector

TP1.

Keep

pressing

the

SYNCHRO

DUBBING

NORM

switch.

Adjust

each

RV71

that

the

frequency

counter

reading

becomes

within

adjustment

limits

3,000+10Hz

both

deck

and

deck

Change

the

reverse

playback

mode

and

repeat

the

steps

and

Frequency

difference

between

the

beginning

and

the

end

the

tape

should

within

3%.

Frequency

difference

between

deck

and

deck

the

begin-

ning

the

tape

should

within

1.5%.

Adjustment

Location:

board

Playback

Level

Adjustment

Procedure

—Forward

Playback

Mode—

test

tape

P-4-L300

VTV

(315kHz,

OdB)

LINE

OUT

Adjust

each

RV11

(L-CH)

and

RV21

(R-CH)

that

the

VTVM

reading

becomes

within

adjustment

limits

below

both

deck

and

deck

Adjustment

Limits

LINE

OUT

level:

—7.7+0.5dB

(0.301

0.338V)

Level

difference

between

channels:

within

0.5dB

Confirm

the

LINE

OUT

level

does

not

change

playback

mode

while

changing

the

mode

from

playback

stop

several

times.

Adjustment

Location

board

Bias

Consumption

Current

Adjustment

This

adjustment

should

performed

when

replacing

the

head

assy

the

bias

oscillating

transformer

(T81,

T91).

Procedure

digital

blank

tape

voltmeter

LINE

CS-413

signal

set

Connect

the

digital

voltmeter

test

point

TP81.

Set

RV81

(L-CH)

and

RV91

(R-CH)

mechanical

center.

Set

forward

record

mode.

Adjust

T81

(L-CH)

and

T91

(R-CH)

that

the

digital

voltmeter

reading

becomes

minimum.

Adjustment

Location

board

Record

Bias

Adjustment

Setting

REC

LEVEL

control:

standard

record

position

(Refer

page

8.)

Procedure:

Record

Mode

OSC

blank

tape

€)

iene

CS-123

Lary

Eaic)

LINE

315Hz

ete

38.8mV

(—26.0dB)

Playback

Mode

recorded

VTVM

portion

LINE

OUT

Playback

the

signal

recorded

step

and

confirm

that

the

10kHz

playback

output

level

VITVM

reading

becomes

within

adjustment

limits

below

relative

the

315Hz

output.

the

adjustment

limits

are

not

satisfied,

adjust

each

RV81

(L-CH)

and

RV91

(R-CH)

that

the

read-

ing

becomes

within

adjustment

limits

below.

Adjustment

Limits:

10kHz

playback

output

relative

the

315Hz

output:

0+0.5dB

(0.732

0.821V)

Adjustment

Location

board

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