Yamaha EQ-630 Service Manual

•

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GRAPHIC

SERVICE MANUAL

NATURAL

SOUNO

GRAPHIC

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EO·630

EQUALIZER

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YAMAHA

This manual has been provided for the

,and

industr WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result

IMPORTANT: The presentation or sale

The data provided striving to improve Yamaha products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's Service Division.

WARN

IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck

•

CONTENTS

TO

SERVICE

more specifically Yamaha Products, are already known and understood b the users, and ha e therefore

ING:

SPECiFiCATIONS DIMENSiONS

NTERNALVlEW

I

REAR

PANELS

L~THIUM

BATTERy

DISASSEMBLY

Remote

and failure an

capabilities, or establish a principle-agent relationship

Static discharges can destroy expensive components. Discharge any static electricityyour body may have accumulatedbygrounding yourself to the ground buss

of

authorized Yamaha Retailer or the appointed service representative.

is

believed tobeaccurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departmentsofYamaha are continually

in

the unit (heavy gauge black wires connect to this buss).

PERSONNEL

.•••••..•••.........••..

.•••.••••.•.••••..•.•..••.•.

•.••••..••••••..•....••..

••••.••••...••...••....•••.

•..•••••••••..••...••..

PROCEDURES

Control

use

the product to performasspecified. For these reasons,weadvise

of

this manual to any individual or firm does

..••••..•••...••.•

••••..•••...••..

Transmitter

IMPORT

of authorized Yamaha Retailers andeise

of

any form.

T

all

I I

I 2 2 3 3

not

work before you apply power to the unit.

IC DISPLAY WI DISCRIPTIPNOFOPERATIONS BLOCK0IAGRAM PRINTEDCIRCUITBOARD SCHEMATIC PARTS

onCE

ice

personnel. It has been assumed that basicseice

all

Yamaha product owners that

constitute authorization, certification, recognitionofany applicable technical.

BLOCK

RING

not

been restated.

in

personal injury, destruction of expensive components

all

service required shouldbeperformed

..........................•.

CONNECTIONS

•....•..........................

......................•.

DIAGRAM

......•...........

LIST

procedures inherant to the

4--5

10

--13

14.15

16--20

8,

by

6 7 7

q

}1002631

YAMAHA

CORPORATION

3.7k-142

YAMAHA

HAMAMATSU,

~~Printed

in

Japan

JAPAN

'89.5

EO-630

•

TO

SERVICE

1.

Critical

Components Components and

mustbereplaced

to

those

2. Leakage When verify insulated

•

Meter by

0.15JJF.

• Leakage

• Be suretotest

•

SPECIFICATIONS

Max.

Output

(1

kHz, 0.1% T.H.D)

Rated

Output

Max.

Inpul

(1

kHz)

Rated

Input

Impedance Frequency Response Center Frequencies

Equalizer Control Range ±12dB Signal·lo·Noise

At

1V

output

Total Harmonic Distortion

(20 Hz -

having originally CUrrent

service has been

that

impedance

Voltage

Voltage .. .. 1V

20

Measurement

all

exposed

from

supply

shouldbeequivalentto1500

current

must

for

Voltage

.....30Hz.50Hz.

Ratio (IHF A Network)

.

kHz, 1V oUlput)

PERSONNEL

Information.

special

characteristics

with

installed.

leakage

parts

(For

completed,itis

conductive

circuits.

not

exceed

with

theACpluginboth

120

having

120V

0.5mA.

Hz.

are

specifioations

Model

Only).

imperative

surfaces are

ohm

...

10Hz -50kHz.-1dB

240

Hz.

480

Hz.1kHz.2kHz.

4

kHz.8kHz.15kHz.

......

Less

marked

equal

that

you

properly

shunted

polarities.

......

...47k-ohms

..

...

105 dB/1V

than

*'

ill

....

0.005%

EQUIPMENT UNDER

~L

OUTLET

Power Requirements

7V

lV

7V

Power Dimensions (W x H x D) 435 x

Weight . .. Accessories

~r===1

INSULATING

General

model.. Europe model .. Australia and U.K. models U.S.A. and Canada models

Consumption

Specifications

SUbjecttochange without notice

TEST

~I:

TABLE

AC

LEAKAGE

OR

EQUIVALENT

r=4

...

110/120/220/240V. SO/50

.. lOW

(17·1/8"x4-13/15"x10-11/15")

Remote control transmitter (1)

Dry battery

size

TESTER

I

220V.50Hz 240V.50Hz 120V.50Hz

122x271

3.5kg(7

Ibs.11oz.)

plug

cords

"AA" (R05) type (2)

Power

cord(1)

mm

(2)

Hz

•

DIMENSIONS

ojloo

311/16~

O

(U)

(C)

(A)

-

435

(17

-I/S"\

I

~~~~~~~~~~

I

~~~~~~~~~U

.,....

38

3811-1/2"1

{1-1/2"1l.----..

U.S.A. model (B) Canadian model (G) Australian model (R)

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British

.

model

. European model

.General

model

1

•

INTERNAL

VIEW

• REAR PANELS

•

U,

C models

«t

Power

~

Lithium Battery(Memory)

~

Main

C»

Panel

~

Panel

~

Panel

~

Panel

~

Panel

o

Pane1Ci

4D

PanelCircuit

Transformer

Circuit

Board Circuit Circuit Circuit Circuit Circuit

rcui t

Board(7)

Board

Board(l)

Board Board

EQ-630

(2)

(6) (3)

(5):BottomSide (4)

:Top

Side

•

A,

B models

• G model

YAMAHA

~g~~~~o

120 VOLTS 10 WATTS60HZ

YAMAHA

CORPORA~I£~

MAINS

~

MAINS

~

MAINS

~

• R model

YAMAHA

~~~~L3~0.

110·120'220'240

10

WATTS

50/60

YAMAHA

CORPORATION

MADEINJAPAN

VOLTS

Hz

"v

MAINS

~

2

EO-630

•

LITHIUM

This

product WARNING: when

handlingorreplacing

• Leave

personnel.

•

Always

• When

installingonthePCboard, terminals to

the

cells.

usesalithium

Lithium

lithium

replace

battery

with

providedonthe

Perform

BATTERY

battery

for

memory

batteries

batteriesofthe

are dangeruus because

lithium

batteries.

replacement

battery

the

solderingasquicklyaspossible.

to

same

solder

using

cells. Never

type.

back-up.

qualified

the

solder

they

service

connection

directly

can be

exploded

• Never reverse

•

Do

•

Do

•

Do

• Never

improper

by

not

short

not

attempttorecharge these

not

disassemble

heat

handling.

the

battery

the

batteries.

the

batteriesorthrow

Observe

polarities

batteries.

them

the

following

when

batteries.

into

fire.

precautions

installing.

English

WARNING! Lithium Change nel

batteries.

of

andasdescribedinthe

Explosion

batteries

Danish

ADVARSEL! Lithiumbatterier. Udskiftning

beskrevet i servicemanualen.

•

DISASSEMBLY

1.

RemovalofTop

a.

Remove

b.

Remove

2.

RemovalofFront Panel

a.

Remove

b.

Remove and

pull

•

LITHIUM

Eksplosionsfare.

m~

kun

2 screws 3 screws

3 screws connectors

the

Front

BATTERY

danger.

must

onlybedonebyqualified

service

manual.

foretagesafen

PROCEDURES

Cover

CD

inFig. I

GD

and

slide

CD

in

Fig.

located

Panel forward.

REPLACEMENT

sagkyndig

the

Top

I

at3place

person-

og som

(Remove

Cover back.

Swedish

L1TIUMBATTERI. Bar

endast

bytas

Explosionsfara

av servicepersonal.

vid

felaktig

Finnish

VAROITUS! Lithiumparisto.

Pariston

Riijiihdysvaara.

saa

vaihtaa ainoastaan alan

partsindisassembly

hantering.

ammattimies.

order

as

numbered)

Note)

Duetothe is

only

the

same

dangerofexplosion

allowedtouse a

type

whenithastobe

and

manufacturer

shifted.

battery

it

of

Wire

wires

while

pushing

3

EO-630

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IC8(1/2)

BUFFER

MUTE

Ql

R

BPF

~11

11

1/4)

IC11t1

14)

12

IC11(1/4)

13

IC13(1/4)

14

IC13(1/4)

15

IC11(1/4)

IS

lCl~4)

IC13(1/4)

~

V

IC

~2)

V

IC9(1/2)

~

~~OLI

ch

Oetector

-

0105

....

0107

~

...

0109

....

0111

...

0113

....

0115

~

....

0117

.

...,

0~9

....

0121

~

...

0123

....

0.....-

XO

X1

X2

X3

X4

X5

XS

X7

XO

X1

IC15

MPX

IC1S{1/2)

MPX

IC405

X

BUFFER

~

7~

Bock

up

BAT.

1 I

r--

RA

IR5C

AG(

I

-.e---

L

X

f--

r---

.....

-0

IC7(

1/2)

BPF

IC5

BAND

LEVEL

--

r

I

YY~-i-i1~

L

--

R

ch

--

---

1

8

- -

~

CONTROL

--

-,

~

...J

9

~

...

..

-

7'r7

IC405

Bock

SA

up .1

8UFFER

I I

....c--

~

-

+SV

RAO

R50~53

R60

....

63

IC401

)J -

CO

R40",R42 R70'"

R70"-73 RSO"'S3

+5.6V

MUT

+15V

07

MUTE

/

-

R92-

M2

M4

M1

11 11 11

01

11

I

M3 12

160Hz)

12 12 12 13

I

DO

I I

(120Hz)

M

R92

01,00

05 06 07

~I

---1

-R42-

-R41-

-R40-

-R91-

-R90-

IC406 Remote Recepter

I~

04,5

RESET

(30Hz)

~~

~

I

r-----------l

I

_1

POWER

SUPPLY

01---06

06,7

IC1S

POWER

Sl

M6

M5

13

13 13

RS3

SW

M8

M7 14

(240Hz)

14 14

14

R1S2

I

~

-

ME~~

(480Hz)

EO REC

TAPE

SOURCE

15 16 17

(1kHz)

15 16 15

16

15

16

R1SO

R~1

I

LCD DRIVER

IC402

LCD DR

IVER

IC403

EO

ON/OFF

EO CURVE

18 19

1S IS IS

R~2

I

0

401

PEAK HOLD

19

R71

ANALYZE

(2kHz) (4kHz) (8kHz)

f7

17 17

R73

I

f-----

LC

-

LCD

r----

402

19

I

REVERS

110

(16kHz)

110

R~O

I

LCD DRIVER I

C404

UP(+)KEY OOWN(-)KEY

UPI+IKEY OOWN{-

)KEY

-

--,

R

ch

L

ch

IC5 BAND CONTROL

--

.__...J

]

9

LEVEL

-,

I

f---

I

-SV

-15V

3C=D=

OS

c

(Note)

X*[lij:Component

o

E

Side

•

PRINTED

A B

CIRCUIT

BOARD

(Pattern Side)

1

2

3

4

5

I

MAIN

Circuit

Board

I

6

PANEL

+

Circuif

Board(1)

To

7

10

J~

__

E F

__

--a......

__

G

__

.....&.....-.

__

H

__

......a--

......a..--_

EQ-630

VOLTAGE· SELECTOR

(R

model

only)

AC

INLET

rd

(1)

10

To

PANEL Circuit

Board

(1)

To

PANEL Circuit

Board

(7)

11·

EQ-630

•

PRINTED

A

CIRCUIT

B

BOARD

(Pattern

c

Side)

(Note)

)(*00

o

:

Component

E

Side

1

Rch

2

I

PANEL

CircuitBoard

(3)I

r-------

From MAIN Circuit Board

---:==L-,------

3

PA

NEL Circuit

To

(4)

1

YE

Board

4

5

LCD (Rch)

I

PANEL

Circuit

Board

(2) I

8

ON

7

POWER

OFF'"

....

12

From PANEL CircuitBoard

(1)

13

F

Lch

G

H

I

PANEL

REMOTE CONTROL

Circuif

Board

(6) I

13

AOSt€;

~

A