Sony WM-W800 Manuale utente

SERVICE

MANUAL

Model

Canadian

Model

AEP

Model

ModeI

SPECIFICATIONS

Tape

track

4-track

2-channel

stereo

Fast

winding

time

Approx.

3min.

with

Sony

cassette

HF-60

Frequency

response

Deck

{Dolby

OFF):

40-15,000

Deck

60-9,000

Input

External

microphone

input

(stereo

minijack)

(PLUG

POWER)

sensitivity

0.35

(-67

dB)

for

low

impedance

microphone

Output

Headphones

jack

(stereo

minijack)

load

impedance

8-300

ohms

Power

output

(at

10%

harmonic

distortion)

operation

Power

requirements

Two

IEC

designation

batteries

(size

AA)

jack

accepts:

Sony

AC-D2

power

adaptor

(optional)

(US,

Canadian)

.120

Vac,

(AEP)..

.220

Vac,

(UK)..

.240

Vac,

Sony

EBP-500

battery

case

(optional)

for

use

two

IEC

designation

R20

batteries

(size

Sony

DCC-70

car

battery

cord

(optional)

for

use

with

car

battery

Battery

life

(EIAJ)

(hours)

Batteries

Tape

playback

Recording

(microphone)

Supplied

Sony

SUM-3(NS)

New

Super

batteries

Approx.

Sony

Eveready

AM3

alkaline

batteries

Approx.

For

maximum

performance

recommend

the

use

alkaline

batteries.

Dimensions

Approx.

116x88.7x38.2mm

(w/h/d)

incl.

projecting

parts

and

controls

(4%

inches)

Approx.

114x84.8x36.2mm

(w/h/d)

not

incl.

projecting

parts

and

controls

(4V

inches)

Weight

Approx.

350

(12.4oz)

incl.

batteries,

not

incl.

other

accessories

Tape

Transport

Mechanism

Type

MT-W800(A)-25

(DECK

MT-W800(B)-25

(DECK

FEATURES

•

Double-cassette

WALKMAN

which

can

copy

recorded

tape

deck

tape

deck

•

Small-size

one-point

stereo

microphone

supplied.

•

Dolby

system

reduces

tape

hiss

noise

the

playback

mode

deck

•

(playback

equalizer)

selector

deck

for

optimum

playback

with

standard

tapes

well

high-per¬

formance

metal

tapes.

•

MIC

(PLUG

POWER)

jack

supplies

power

the

sup¬

plied

microphone.

'Dolby'

and

the

double-D

symbol

are

the

trade

marks

Dolby

Laboratories

Licensing

Corporation.

Noise

reduction

system

manufactured

under

license

from

Dolby

Laboratories

Licensing

Corporation.

STEREO

CASSETTE

CORDER

WM-W800

SERVICING

NOTES

Replacing

chip

components

All

chip

components

should

connected

and

disconnect¬

ed,

using

tapered

soldering

iron

[temperature

the

iron

tip:

less

than

280°C

(536°F)],

pair

tweezers

and

braid¬

wire.

Precautions

for

replacement

not

disconnect

the

chip

component

forcefully.

Otherwise,

the

pattern

may

peel

off.

Never

re-use

disconnected

chip

component.

Dispose

all

old

chip

components.

protect

the

chip

component,

heating

time

for

attach¬

ing

the

component

should

within

seconds.

Removing

chip

components

(1)

emoving

solder

electrode

Remove

the

solder

the

electrode,

using

thin

braided

wire.

not

remove

the

solder

the

part

(chip

component)

attached

adjacent

the

electrode.

(2)

sconnecting

chip

components

Turn

the

tweezers

with

the

soldering

iron

alternately

applied

both

electrodes,

and

the

chip

component

will

disconnected.

Take

careful

precautions

while

disconnecting,

because

the

chip

component

force¬

fully

removed

the

land

may

peel

off.

Never

re-use

disconnected

chip

component.

(3)

moothing

the

soldered

surface

After

disconnecting

the

chip

component,

remove

the

solder

using

braided

wire

smooth

the

land

surface.

Connecting

chip

components

The

value

chip

components

not

displayed

the

main

body.

Take

due

precautions

avoid

mixing

new

chip

components

with

other

ones.

(1)

pplying

solder

land

one

side

Apply

thin

layer

solder

the

land

one

side

where

the

chip

component

connected.

Too

much

solder

may

cause

bridging.

Small

quantity

solder

(2)

peedy

soldering

Hold

the

chip

component

the

desired

position,

using

tweezers,

and

apply

the

soldering

iron

the

arrow-marked

direction.

protect

the

chip

compo¬

nent,

heating

time

should

within

seconds.

(3)

eedy

soldering

electrode

the

other

side

Solder

the

electrode

the

other

side

the

same

way

(2)

above.

—

WM-W800

PARTS

IDENTIFICATION

Deck

Cassette

compartment

(deck

Headphone

jack

(stereo

minijack)

©MIC

(microphone)

(PLUG

POWER)

jack

(stereo

mini-

jack)

(playback

equalizer)

selector

ISS

(Inteference

Suppress

Switch)/DOLBY

selector

PUSH

OPEN

button

Battery

compartment

operation

buttons

deck

PLAY

(playback)

button

STOP

button

(

fast-forward)

button

►

(rewind)

button

Cassette

compartment

(deck

(external

power

input)

jack

VOL

(volume)

control

PAUSE

switch

©OPR/BATT

(operation/battery)

indicator

operation

buttons

deck

REC

(record)

button

PLAY

(playback)

button

STOP

button

(fast-forward)

button

►►

(rewind)

button

WM-W800

SECTION

BLOCK

DIAGRAM

SECTION

DISASSEMBLY

•

the

disassembly

procedure

the

numerical

order

given.

•

Assemble

the

reverse

order

disassembling.

CONTROL

PANEL

COVER

control

pane

cover

CONTROL

PANEL

control

pane!

precision

screw

PI.4

precision

screw

Ml.4

step

screw

fS\/Q

M1.4\

PIT

;<jp

step

screw

M1.4

CASSETTE

LID

(B)

cassette

lid

(B)

precision

screw

CASSETTE

LID

(A)

cassette

lid

precision

screw

+P1.4

1.6

WM-W800

+P1.4

3.5

lever

bracket

SIDE

PANEL

side

panel

DECK

precision

screw

Ml.4

precision

AUDIO

BOARD/DECK

chassis

fitting

shaft

(B)

chassis

fitting

shaft

(B)

audio

board

:o)j/

■

vs*

WM-W800

HEAD

CHASSIS

(Deck

REC

LEVER

(Deck

only)

REC

lever

tension

spring

x©

precision

screw+P1.4

2.0

fV^©

REC

lever

spacer

CONTROL

PLATE

lever

stopper

(C)

spring

precision

screw

/\.

+P1.4

2.0

Loosen

the

screw.

SLEEVE

REEL

precision

screw

+P1.4

1.8

07.2

washer

precision

screw

+P1.7x

2.0

control

plate

Installation

(1)

BUTTON

GUIDE

button

collar

button

guide

servo

board

S901/S902

installation

(2)

HEAD

CHASSIS

(Deck

take-up

reel

<t>2.5

washer

Spread

the

contact

point

reel

switch

with

pair

tweezers.

PI.4

1.4\

head

chassis

ERASE

head

<55!

?E^

”

joint

(A)

stopper

washer

reel

switch

lock

screw

chasste^

spring

(Installation)

pinch

lever

07.2

washer

■

head

chassis

pinch

lever

shaft

(Head

Wiring)

sprins

*&>

ead

—

grounding

plate

adjustment

pinch

lever

pinch

lever

azimuth

adjustment

screw

precision

screw

+P1.4

1.4

shut-off

spring

stopper

washer

precision

screwdriver

head

chassis

head

chassis

c/s/o

„

sprmg

head

chassis

-151

pinch

lever

shaft

SECTION

ADJUSTMENTS

WM-W800

PRECAUTION

Clean

the

following

parts

with

denatured-

alcohol-moistened

swab:

REC/PB

head

pinch

roller

capstan

rubber

belts

erase

head

Demagnetize

the

REC/PB

head

with

head

demagnetizes

(Take

care

not

demagnetize

the

erase

head.)

not

use

magnetized

screwdriver

for

the

adjustments.

The

adjustments

should

performed

with

the

rated

power

supply

voltage

(2.5V)

unless

other¬

wise

noted.

3-1.

MECHANICAL

ADJUSTMENTS

Pinch

Roller

Pressure

Measurement

Procedure:

—

playback

mode

—

Pull

the

spring

scale

the

direction

the

arrow.

Slowly

return

the

pinch

roller

and

read

the

spring

scale

just

when

the

pinch

roller

starts

rotate.

Specifications:

150

20g

Torque

Measurement

Perform

with

2.5V

power.

Torque

meter

Meter

reading

FWD

CQ-102C

-40

g-cm

(0.28

0.56

oz-inch)

FF,

REW

CQ-201B

than

g-cm

(More

than

0.83

oz-inch)

Back

Tension

CQ-102C

2.5

g-cm

—

0.034

oz-inch)

Tape

Pulling

Force

CQ-403

than

g-cm

(More

than

0.62

oz-inch)

Thrust

Clearance

Adjustment

Thrust

clearance

Adjustment

Parts

(Refer

exploded

views

and

parts

list.)

Motor

wheel

0.2mm

No.

114

Take-up

reel

0.05-0.15mm

No.

108/110/111

Supply

reel

0.05-0.15mm

No.

117

Reverse

wheel

0.05-0.15mm

No.

152/154

reverse

wheel

WM-W800

3-2.

ELECTRICAL

ADJUSTMENTS

Record/Playback

Head

Azimuth

Adjustment

Procedure:

Mode:

playback

test

tape

P-4-A063

(6.3kHz,

dB)

VTVM

czT

LXj-Ll_J

HEAD

PHONES

Turn

the

adjustment

screw

for

the

maximum

output

levels.

these

levels

not

match,

turn

the

adjustment

screw

until

both

output

levels

match

together

within

0.5dB.

within

'output

05dB

level

screw

position

Phase

Check

Mode:

playback

test

tape

P-4-AQ63

(6.3kHz,

-10dB)

Note)

After

the

adjustments,

not

apply

locking

compound.

oscilloscope

R-CH

HEADPHONES

hl8n

□

j/h

—O

t-i

Screen

pattern

Of\

Tape

Speed

Adjustment

Setting:

VOLUME

control:

mechanical

mid

Procedure:

Mode:

playback

test

tape

WS-48A

(3kHz,

OdB)

speed

checker

LFM-30

digital

frequency

counter

—,_)

-O

HEADPHONES

Specification:

Deck

3,000

3,020Hz

(3,010

±0.3%)

Deck

2,980

3,000Hz

(2,990

±0.3%)

Adjustment

Location:

fast

Deck

tape

speed

adjustment

RV601

slow

Deck

tape

speed

adjustment

RV701

phase

gp°

735

180°

good

wrong

WM-W800

Dolby

Level

Adjustment

Setting:

TAPE

switch:

NORM

DOLBY

switch:

off

VOLUME

control:

minimum

test

tape

P-4-L300

(315

Hz,

OdB)

Procedure:

Adjust

RV101

(L-CH),

RV201

(R-CH)

obtain

—27.7dB

±0.5dB

(0.030V

0.033V)

output

level.

Adjustment

Location:

Audio

board

WM-W800

RECORD

BIAS

ADJUSTMENT

Setting:

VOLUME

control:

MECHANICAL

MID

Procedure:

rding

Mode

(Deck

onoOoo'T

blank

tape

CS-10

600n

■

MIC

250Hz

]

315Hz

0.0775m

(~80dB)

6.3kHz

layback

Mode

(Deck

recorded

portion

ifications

250Hz

315Hz

6.3kHz

necessary,

change

resistor

connection

and

repeat

the

above

step

through

mark:

pattern

bridge

LOW

R316

R317

Adjustment

Location:

Audio

board

R317

1316

Bridge

with

solder.

—12

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