JVC RC-W410 Manuel utilisateur

RC-W410

wesaavvvx

JVC

ERVICE

MANUAL

Area

suffix

Bikes

Shieh

oad

hak

eer

Continental

Europe

Gee

Germany

Glo

yelaleiss

G28

sok

die

Italy

VINX:

Eastern

Europe

Contents

Page

[1]

Safety

Precautions...........

0.0000

eee

(9!

Wiring

Connections

.....-......0.00

00000005

1D)

“Features:

uci

bed

goa

eae

10,

Standard

Schematic

Diagram

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

(3)

Specifications

.......

0.000.000

eee

(11)

Location

P.C.

Board

and

Parts

List

..........

[4]

Names

Control

and

Their

Functions.

......---

12]

Exploded

View

Enclosure

Assembly

.........--

{5]

Location

Main

Parts

...........0+00000

13)

Exploded

View

Mechanism

Assembly

.......

(6!

Removal

Main

Parts...........-0000

000005

14)

Packing

Illustration

and

Parts

List

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

(7)

Main

Adjustment

........0....0.20222

0000s

(5|

Accessories...

0.0.0.0

eee

Block

Diagrams.

342-40

cae

eet

No.

1768

February

1989

RC-W410

sevcavvvx

'1|

Safety

Precautions

OhWNH

Warning

This

equipment

has

been

designed

and

manufactured

meet

international

safety

standards.

the

legal

responsibility

the

repairer

ensure

that

thése

safety

standards

are

maintained.

Repairs

must

made

accordance

with

the

relevant

safety

standards.

essential

that

safety

critical

components

are

replaced

approved

parts.

mains

voltage

selector

provided,

check

setting

for

local

voltage.

The

design

this

product

contains

special

hardware

and

many

circuits

and

components

specially

for

safety

purposes.

For

continued

protection,

changes

should

made

the

original

design

unless

authorized

writing

the

manufacturer.

Replacement

parts

must

identical

those

used

the

original

circuits.

Service

should

per-

formed

qualified

personnel

only.

Alterations

the

design

circuitry

the

product

should

not

made.

Any

design

alterations

the

product

should

not

made.

Any

design

alterations

additions

will

void

the

manufacturer’s

warranty

and

will

further

relieve

the

manufacturer

responsibility

for

personal

injury

property

damage

resulting

therefrom.

Many

electrical

and

mechanical

parts

the

product

have

special

safety-related

characteristics.

These

characteristics

are

often

not

evident

from

visual

inspection

nor

can

the

protection

afforded

them

necessarily

obtained

using

replacement

components

rated

for

higher

voltage,

wattage,

etc.

Replacement

parts

which

have

these

special

safety

characteristics

are

identified

the

Parts

List

Service

Manual.

Electrical

components

having

such

features

are

identified

(

A\)

the

Schematic

Diagram

and

Parts

List

the

Service

Manual.

The

use

substitute

replacement

which

does

not

have

the

same

safety

characteristics

the

recommended

replacement

part

shown

the

Parts

List

Service

Manual

may

create

shock,

fire,

other

hazards.

The

leads

the

products

are

routed

and

dressed

with

ties,

clamps,

tubings,

barriers

and

the

separated

from

live

parts,

high

temperature

parts,

moving

parts

and/or

sharp

edges

for

the

prevention

electric

shock

and

fire

hazard.

When

service

required,

the

original

lead

routing

and

dress

should

observed,

and

should

confirmed

that

they

have

been

returned

normal,

after

re-assembling.

Leakage

current

check

(Electrical

shock

hazard

testing)

After

re-assembling

the

product,

always

perform

isolation

check

the

exposed

metal

parts of

the

product

(antenna

terminals,

knobs,

metal

cabinet,

screw

heads,

headphone

jack,

control

shafts,

etc.)

sure

the

product

safe

operate

without

danger

electrical

shock.

not

use

line

isolation

transformer

during

this

check.

Piug

the

line

cord

directly

into

the

outlet.

Using

Leakage

Current

Tester’,

measure

the

leakage

current

from

each

exposed

metal

part

the

cabinet,

particularly

any

exposed

metal

part

having

return

path

the

chassis,

known

good

earth

ground.

Any

leakage

current

must

not

exceed

0.5

(r.ms.).

Alternate

check

method

Plug

the

line

cord

directly

into

the

outlet.

Use

voltmeter

having

1,000

ohms

per

volt

sensi-

tivity

the

following

manner.

Connect-a

1,500

resistor

paralleled

0.15

AC-type

capacitor

be-

tween

exposed

metal

part

and

known

good

earth

ground.

Measure

the

voltage

across

the

resistor

with

the

VOLTMETER

voltmeter.

(Having

1000

ohms/volt,

sensitivity.)

Move

the

resistor

connection

each

exposed

metal

part,

particularly

any

exposed

metal

part

having

return

path

the

chassis,

and

measure

the

volt-

Out

Sah

age

across

the

resistor.

Now,

reverse

the

plug

the

biageahiepiewe

outlet

and

repeat

each

measurement.

Any

voltage

each

exposed

measured

must

not

exceed

0.75

(r.m.s.).

This

15009

10W

metal

part.

corresponds

0.5

(r.m.s.).

—--

Good

earth

ground

(No.

1768)

RC-W410

B/E/G/GI/V/VX

SAFETY

PRECAUTIONS

ABOUT

RC-W410

Since

diodes

D901, D902,

D903

and

D904

are

heating

units,

wires

are

arranged

not

touch

them

shown

Fig.

1-1

©.

Confirm

that

those

parts

are

set

vertically.

Power

Supply

Board

Check

wires

connected

the

power

transformer,

which

must

bound

together

with

shown

Fig.

1-1

4PIN

Connector

Power

Amplifier

Board

Check

that

single

wires

coming

from

P.C.

board

are

bound

together

with

the

collective

root

near

the

board

shown

Fig,

1-1

Q).

Power

Trans

Check

that

all

wires

motors

and

leaf

switches

are

bound

and

secured

with

spacers

specific

points

respec-

tively.

(See

Fig.

1-2

and

©)

Mechanism

Fig.

1-2

Make

sure

speaker

wires

which

should

soldered

they

are

twisted

with

each

other

shown

Fig.

1-3

©.

Speaker

(ey

Fig.

1-3

(No.

1768)

RC-W410

B/E/G/GI/V/VX

[2]

Features

Hyper-Bass

Sound

System

with

on/off

switch

Three-band

(FM/MW/LW)

synthesizer

tuner

with

Five-stations

each

band

(FM1,

FM2,

and

LW)

preset

capability

4-element

S.E.A.

graphic

equalizer

Full

auto-stop

mechanism

Synchro-start

high-speed

dubbing

Relay

play

between

two

decks

'3]

Specifications

Tuner

section

Frequency

rranges

87.5—108

MHz

522-1629

kHz

144-290

kHz

Antennas

Telescopic

antenna

for

Ferrite

core

antenna

for

Tape

Recorder

section

Track

system

4-track

2-channel

stereo

Frequency

response

80—12,500

Wow

flutter

0.15

(WRMS)

Fast

wind

time

Approx.

120

sec

(C-60

cassette)

General

system

ASW

(Acoustic

Super

Woofer)

Speakers

10cm

Power

output

7.0

(3.5

3.5

and

8.0

for

(Max.)

4.0

(2.0

2.0

and

6.0

for

(10%

THD)

S.E.A.

characteristics

S.E.A.

center

frequencies

100

Hz/330

Hz/2

kHz/10

kHz

S.E.A.

control

range

:£8

Input

jack

MIX

MIC

mV/—50

dBV,

200

—

kQ)

Output

jack

Headphones

(20

mW/32

8Q—1kQ)

Power

supply

:DC

“R20”

cells)

220—240

V/110—120

50/60

(RC-W410E

only)

Ext.

(car

battery

via

optional

CN-332

car

adapter)

Power

consumption

Dimensions

560(W)

167(H)

153(D)

(including

knobs)

Weight

Approx.

3.9

(without

batteries)

Design

and

specifications

are

subject

change

without

notice.

(No.

1768)

RC-W410

B/E/G/GI/V/VX

Names

Controls

and

Their

Functions

OGOdG

__|

Cen

[jee

Farce

rae

Jit

eee

SISO

Rare,

CMR

WOO

RESO

estes

Seeeeees

Fig.

4-2

Cassette

operation

buttons

(Deck

LCD

digital

display

@/4

STOP/EJECT

button

Band

indicator

(FM1-FM2-MW-LW)

button

Radio

frequency

display

REW

button

Preset

station

indicator

“4

PLAY

button

stereo

(STEREO)

indicator

Cassette

operation

buttons

(Deck

BAND

button

§8

PAUSE

button

TUNING

control

@/&

STOP/EJECT

button

DOWN

frequency

button

frequency

REW

button

Cassette

holder

(Deck

“@

PLAY

button

PHONES

jack

(3.5

dia.

stereo

mini)

OREC

button

MIX

MIC

jack

(3.5

dia.

mini)

TAPE/FM

MODE

switch

Telescopic

antenna

FUNCTION

switch

BEAT

CUT

switch

(HYPER-BASS

SOUND)

switch

VOLTAGE

SELECTOR/AC

(AC

input)

jack

4-BAND

GRAPHIC

EQUALIZER

(S.E.A.)

controls

jack

(©-2-@

)

(RC-W410E

only)

VOLUME

control

Battery

compartment

cover

Preset

station

button

PRESET

SCAN

button

Cassette

holder

(Deck

(No.

1768)

RC-W410

B/E/G/GI/V/VX

[5|

Location

Main

Parts

Amplifier

Board

Tuner Board

Power

Amplifier

Mechnism

Ass’y

‘Speaker

Board

Fig.

5-1

Battery

Contact

Board

Rod

Antenna

GHEE

TAT

PELL

Battery

Contact

Board

Bilt

Subwoofer

IRedmSide

Socket

Power

Supply

Board

Power

Transformer

Fig.

5-2

(No.

1768)

Mechanism

Ass’y

HEAD

Bottom

View

[A]

Mecha

Button

PLAY

STOP/

EJECT

REW

Reel

Disk

Ass'y

Motor

Ass’y

Fig.

5-3

RC-W410

B/E/G/GI/V/VX

[B}

Mecha

Button

STOP/

REW

REC

EJECT

R/P

HEAD

Reel

Disk

Ass‘y

Cam

Gear

Flywheel

Ass’y

Fig.

5-4

Cam

Gear

Flywheel

Ass'y

(No.

1768)

RC-W410

B/E/G/GI/V/VX

Removal

Main

Parts

Rear

Cabinet

Ass’y

‘

Remove

six

screws

(1)

(M3

20)

and

(M3

44)

which

secure

the

rear

cabinet

ass’y

the

points

indicated

marks.

the

course

detaching

the

rear

cabinet

ass’y,

dis-

connect

the

antenna

lead

which

wired

the

tuner

board

from

TP1.

Disconnect

connector

CN901

from

the

power

amplifier

board,

M3x

Fig. 6-1

B®

Speaker

Unit

for

Hyper-Bass

Sound

Release

the

wire

between

the

battery

contact

board

and

the

power

supply

board

from

the

guide

for

wire

arrange-

ment.

Release

the

wire

from

three

wire

clamps

located

the

right

speaker.

Remove

five

screws

)

(M3

16)

and

six

screws

(m3

16)

securing

the

hyper-bass

sound

box.

Therefore,

the

speaker

unit

can

seen.

removing

eight

screws

(M3

16)

from

the

hyper-

bass

sound

box,

the

speaker

unit

can

taken

offm3

Guide

for

wire

arrangement

(3)

Fig.

6-2b

(No.

1768)

Tuner

Board

Draw

out

the

tuner

board

along

the

groove

the

front

cabinet

ass’y.

Main

Board

and

Power

Amplifier

Board

Remove

three

knobs

the

slide

switches:

TAPE/FM

MODE,

FUNCTION

and

selectors.

Release

the

wire

from

three

wire

clamps

located

the

right

speaker.

Remove

adhesive

tape

securing

the

wire

the

main

board.

Remove

two

screws

(M3

45)

and

(M3

45,

black)

securing

the

main

board

and

power

amplifier.

Detach

the

PHONES

jack

first,

then

the

volume

control

and

SEA

switch,

etc.

one

after

another,

and

lastly

take

off

the

boards.

Disconnect

connectors

CN103,

CN902,

CN101,

CN102

and

CN401

from

the

Main

board.

Mechanism

Ass’y

Remove

the

tuner

board

and

amplifier

board.

Remove

nine

screws

(M3

10)

and

(M3

25)

securing

the

mechanism

ass’y.

Draw

out

the

Rec.

lever.

Operation

Buttons

Remove

ten

screws

(M2

securing

operation

buttons

the

mechanism.

Synthesizer/LCD

Board

Remove

two

screws

(M3

securing

the

Synthesizer/

LCD

board.

Power

Transformer

and

Power

Supply

Board

(Fig.

6-2b)

Remove

three

screws

retaining

the

power

transformer

and

power

supply

board.

Remove

two

screws

from

transformer

bracket.

(When

re-assembling,

make

sure

the

correct

direction

set

the

transformer

bracket.)

RC-W410.

secon

M3x25

M3x10

(No.

1768)

RC-W410

secon

Main

Adjustments

(1)

Equipment

and

Measuring

Instrument

used

for

Adjustments

Electronic

voltmeter

Wow-flutter

meter

Torque

testing

cassette

gauge

CTG-N

Audio

frequency

oscillator

Frequency

counter

Alignment

tape

Attenuator

Standard

signal

generator

Measuring

tape

TS-8

(UR)

(2)

Function

Cassette

Condition

for

Measurement

Power

supply

......

220—240

V/110—120

(50/60

Hz)

Function

position

..TAPE/FM

MODE:

TAPE

NORMAL

DC12V

FUNCTION

NORMAL

SPEED

Reference

output

...

Speaker

OdBs

(0.775

V)/8

SEA

Center

Headphone

—13

dBs

(0.173

V)/32

OFF

2120

BEAT

CUT

NORMAL

Reference

Input

....

Ext.MIC

—46dBs

Routine

Check

and

Adjustment

No.

Item

aay

Check

and

Adjustment

Adjusting

Point

Tape

speed

and

VTT712

Play

back

the

end

portion

the

VTT712

test

tape

and

check

Wow-fiutter

kHz)

the

following

standards.

check

adjustment

Deck

Normal

speed

3000

VR331

Normal

speed

Less

than

0.38%

(JIS

UNWTD)

Check

Deck

Normal

speed

+80

against

Deck

Check

Normal

speed

Less

than

0.38%

(JIS

UNWTD)

Check

High-speed

and

VTT712

Deck

and

Blank

tape

TS-8(UR)

Synchro

dubbing

kHz)

deck.

check

TS-8

(UR)

Function

position

HIGH

SPEED

Deck

REC/PAUSE

Deck

pause

released

when

playing

Deck,

then

start

High-speed

dubbing.

High

speed

Within

5600

400

check

Check

VTT703L

Play

back

VTT703L,

both

and

Deck.

Head

azimuth

Left

side

screw

adjustment

(10

kHz)

Obtain

maximum

Playback

output

for

this

adjustment.

R/P

Phase

difference

minimized.

head

Screw

lock

applied

after

adjustment.

Playback

out-

VTT724

Play

back

the

VTT724

tape

Deck

and

confirm

that

level

Check

put

level

kHz)

difference

between

and

channels

within

dB.

check

(Measuring

point

Headphone

output)

Playback

VTT736

Play

back

VTT736

difference

level

against

kHz.

frequency

(1kHz/125Hz,

Deck,

BDeck.....

Measuring

point

Headphone

output

Check

characteristics

1kHz/8

kHz)

1kHz/125

Hz:

O0dB+4dB

1kHz/8kHz

1dB+4dB

Tape

mode

switched

Metal/CrO,

Play

back

VTT736

and

check

the

difference

between

kHz

and

kHz

Headphone

output.

Deck

within

—1

Check

Bias

frequency

Deck

REC

mode,

Beat

Cut

Position

Leakage

Bias

Headphone

checked

with

frequency

counter.

kHz

adjusted

with

L321

Bias

frequency

checked

for

beat

cut

position

and

position

Position

kHz

Position

kHz

Rec/Playback

TS-8

(UR)

Reference

signal

—20

applied

Mic,

and

difference

frequency

level

between

125

and

kHz

against

kHz

checked.

characteristics

1kHz/125

Hz:

—2dB+4dB

Check

1kHz/8kHz

dB*§

—_______+

Maximum

output

VTT722

Play

back

VTT722.

Measuring

point

Headphone

output

Output

than

(0.95

SEA

max.

_|_

Check

(No.

1768)

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