JVC AXF-1-GD Service manual

JVE

AX.FlGD

Area

Suffix

...

BS

. the U.K.

EF

.... Continental Europe

Except Germany

and ltaly

EN.... NordicCountris

G .....

Gl ltaly US

UT .... Taiwan

UB .... Hong Kong

U . ... .

....

Germany

Singapore

Other Area

Contents

Sofety

Instruction

Description

Disas

Precoutions

Booh

of Major

s sembly

Proce dure s

ICs

1-2

1-3

1-11

1-14

Adjustment Bloch Diagroms Schematic Printed. Parts List

Procedures ... . 1-16

Di.ogroms

Circuit

Boords

Seporate-uolume

No.2O548

Sep.1995

1-17 Insertion Inseftion Insertion

AX-FIGD

Safety Precautions

1.

The design specially original design be identical qualified persorlnel

2. Alterations alterations

of this

for safety

purposes.

unless authorized in writing

to those used in

only.

of the

of

design or circuitry

product

the

void the manufacturer's

perconal

for

3. Many

injury

electrical

or

and mechanical

characteristics. These

protection

the

rated

for higher voltage,

characteristics

having

such

List in the

same

safety characteristics

Service

4.

The leads in the like

Manual may

to

edges for the

afforded by them necessarily

are identified

features

Service Manual. The

products

the

be separated from

prevention original lead routing have

been returned to

5. Leakage After

parts

contorl

currnet

check

re-assembling

product

the

of

shafts, etc.) to be shock. Do

not use a line

o Plug

the AC line

measure any

exposed metal

ground.

o Alternate

Plug

the AC ohms resistor known

per

paralleled

good Measure with

the AC Move the metal having

part,

a return meausre Now, repeat

reverse

each measurement.

measured

This

corresponds

the leakage

Any leakage

the

the AC voltage

isolation

check method

line cord

volt

or more

earth

AC voltage

voltmeter.

resistor

particularly

the

must

not

to

product

contains special hardware and many

For

continued

protection,

by

the original

the

of

should

warranty

property

characteristics

not

be made. Any

and will further

damage resulting therefrom.

parts

in the

are often not

be

wattage,

Replacement

etc.

in the Parts List

are identified

by shading on the schematics

use

of a substitute repalcement

as the recommended

create shock, fire,

are routed

live

of electric shock

and

dress should

or other hazards.

and dressed with ties,

parts,

high

and

be observed, and it

normal, after re-assembling.

(Electrical

product,

the

(antenna

sure the

cord

directly into the

current from

part

current must

directly into

by

a 0.15

shock hazard testing)

always

terminals,

perform

knobs, metal

product

transformer

during this

each

having

a return

not

the AC

sensitivity in

pF

AC-type

the following

is

AC outlet.

exposed metal

path

exceed 0.5mA AC

capacitor

ground.

across the resistor

connection

any

path

to

each exposed

exposed metal

to

the

chassis, and

part

across the resistor.

plug

in the

AC

outlet and

Any voltage

exceed

0.75 V AC

0.5 mA AC

(r.m.s.).

circuits and components

no

changes should be made to the

the manufacturer.

Replacement

circuits. Services should be

product

should not be made.

design alterations

or additions will

relieve the manufacture

products

evident

have

from

special safety-related

visual inspection nor

obtained by using replacement

parts

which have these

of Service Manual.

Electrical

and by

(A)

which does not have the

replacement

parts

shown in the Parts

clamps, tubings,

temperature

fire

hazard. When

isolation

an

parts,

moving

should be

check

parts

service is required,

confirmed that they

on the exposed metal

cabinet, screw heads,

safe to

operate without

danger of electrical

check.

Using a

parts

to

the chassis, to

"Leakage

of the cabinet,

a known

(r.m.s.).

outlet. Use an

manner.

between

Good

earth

AC voltmeter having,

Connect a 1,500Q

an exposed metal

AC VOLTMETER (Having

ohms/volts, or

lspF

AC TY

1s000

10w

ground

parts

must

performed

by

Any design

of responsibility

can

components

special safety

components

on the Parts

List of

barrierc and

and/or sharp

the

headphone

jack,

Current Tester",

particularly

good

earth

I,OOO

10 W

part

and a

1000

more

sensitivity.)

Place this probe

on

each exposed

part.

metal

Warning

1.

This

equipment has

2. lt is

3. Repairs must

4. lt is

5. lf mains

1-2

the legal

maintained.

essential that

responsibility

be made

voltage

selector is

been

designed and

of the repairer

in accordance

safety

critical

provided,

manufactured

to

ensure that

with

the relevant

to meet

safety

components are replaced

check setting

for local voltage.

international

these

safety standards

standards.

by approved

parts.

safety

are

standards.

N(-FlGD

lCs

Description

MN171ZO2JGL(lCs01)

7

T

I

1. Terminal Layout

VDD

1

CD IND

IND

DCSIN

KEYIN

2 3 4 5 5 7 8 9 10 11 l2 13 t4 l5 16 17

18

r9 20 21 22 23 24 25 26 27 28 29 30

IN

31 32

TUNER IND

TAPE IND

MDIND

PHONO IND

AUXIND

POWER ON

VOTUME IND

DIRECTIND

SOUND

DCS.OUT

DIRECT KEY

POWER

of

: SYSTEM CONTROLLER

osc tN

u

oscour

63 62

GNO

6l 60 s9

POWERON

58 s7

SPK.RELAY MUTE

56

DIRECTON/OFF

55 54 s3 52 51 50 49 48 47 46 45 4 43 42 41 /O

39 38 37 36 35 34 33

ON/OFF

SOUND VOL. DOWN VOL UP

H.P.IN

PROTECT-IN INH RM.IN RESET DATA SIB SCLK

SOURCE 5EL-2 SOURCE SEL-1

SOUND KEY

IN

2. Functions

v

Pin No.

1 VDD

Symbol r/o

Power

2 CD IND o CD

TUNER IND

3

4 TAPE IND o TAPE

o TUNER

Function

supply

indicator

control

indicatorcontrol 3s

indicator

control

5 MD IND o MD indicator control 37 6 PHONO IND o 7

AUX IND o AUX indicator control

PHONO indicator

control

8 PC'WER OI{ IND o POWER ON indicator control

up

indicator

control

v

10 DIRECT IND

11 SOUND IND

CD DIRECT indicator control 42 DATA o Data

o

SOUND indicator control 43 RESET I Reset siqnal

o

12 Pull

9 VOLUME IND o VOLUME

13

14

Pull up

Pull up 46 PROTECT-IN I Detection for 15 Pull up 47 Connect to GND 16 17 Pull 18

GND GND 50 Connect to GND

Pull up 48 Connect to GND

up 49 Connect

19 Pull up

20 Pull 21 22 Pull 23

up 52 VOL. UP o Volume control siqnal

Pull up s3 VOL. DOWN

up 54 SOUND ON/OFF

Pull up 55 DIRECTON/OFF o CD direct control siqnal 24 Pull up s6 MUTE 25 Pull 26 Pull

up 57 up 58

27 DCS-|N I Compulink signal input 59 Connect 28 DCS-OUT o Compulink siqnal output 29 Pull 30 31 DIRECT KEY

IN I

up

Pull

up 62

CD DIRECT

key input 63

32 POWER KEY IN I POWER key input u osc rN I Clock oscilator

Pin NO.

33 34

Symbol t/o

SOUND KEY

IN SOUND key input

Connect

Function

to GND

Connect to GND

36

SOURCE SEL-I

38 SOURCE SEL-z

Connect I Source I Source

39 Connect 40 SCLK o Clock output

41 STB o Strobe siqnal

to select select

to GND

GND

control control

for 1C201 for 1C201

for 1C201

input M RM.IN I Remote control siqnal 45

INH

I Inhibit

siqnal

input

protector

to GND

H.P.IN I Headphone in

51

SPK.RELAY POWER

Volume

o

Presence control siqnal

o

Source mute

o

o Speaker

ON o Requlator control siqnal

siqnal

control siqnal

relav

control siqnal

to GND

60 Connect to GND

61 Not used

GND GND

osc our o

Clock oscilator output

input