Yamaha EQ-630 Service Manual

•

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GRAPHIC

SERVICE MANUAL

NATURAL

SOUNO

GRAPHIC

EOUALIZER.

EO·630

EQUALIZER

-

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BiTHEATEA

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

..........................•.

PIN

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

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

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.)

Pin

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)

'ID

,

0

;::

N

-

N

'"

~

311/16 I

\4"

c::=J:::::=J

c:=c::::J

c:::::::r::::J

c:r:::::::J

= =

-I

'

<D-

'N

~~

'"

-~

'"

~

•

t

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

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

.IC

ICI

:

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IC3.4.7

(Hi-Fi

0

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BLOCK

TCql62N(Analog

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7-Band

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Switch

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Array)

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NJM4558SD

(Operational Amplifier)

<I
I­<I

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0

u

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0

en

Z

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:

IC5.6
(Graphic

variable

NJU7305L

Equalizer

resi

stor)

Electronic

ICI

I

(Quad

V

IN'

V

IN'

VIN2-

~14

Ope-Amp)

+

:

LA6324N

VIN3+

ICI5

~17

:

(8-channel

Demu1ti

X.

X~

X, X,

X~

Inhibit 6 Inhibil

VEE

Vss

a 9

Analog

p1exer)

X6

X~

11";"'~-...J

f 2

13
14
15

t6

17

01

eLK

'T--LT""'1r-l"''L..

S

TEST1

'1:==:....

MN4051BD

Multiplexer

X.

Xz

X,

Xo

X3

A

a

'---~~t1

..:..

_

J-6-6-~----.....J

8

~

~

u

»>

>

FUNCTION

16

Vuo

15

Xz

,4

XI

13

Xo

,2

X3

11

A

,0

a

Control Input

~~

0 0

0 0
0

I

O~

~-

I , 0

I 0 I

I

I

I I I

TABLE

B

lj

I I

I

--+

I

--.Jt-----:-OTEST

0

I

0

0

x x x

f 2

f 3

14
15

16

f7

2

ON

SW.

I

Xo
X,

Xz

X3

,

X,
Xs
X6

X,

-

4

EQ-630

IC402

(LCD

51
52
53

54

5S

56

57

58

59

510

511
512

513
514

51S

516

""404

Dri

ver)

LC7582B

IC406:GPIU521X

(Remote

Control Receptor Unit)

5471AOII

S46105PII
54SIA021
544105P21

543

542
541

540

539

538

537

536

53S

534

533

532

VLCO

osc

iiii

0--------'

IC405

OUT

N

,

,

o

u

8

IN

IN

GNO

5471AOII

'-----'¢

co

8

>

.

0.

o

54SIA021

Vee

OUT

IN

IN

ICI8:AN78N05

(3-Terminal Voltage Regulater)

InpUT

0\

Rsc

r-_-==::;-i-@OUTPut

Rz

IC401

:

HD61408DS

(4-Bit

ICHIP

MC)

I

Functi on

~ULT

I

PLEXERCSRch

NC

~ULT

I

PLEXERCSL

~ULT

I

PLEXERCSLch

ElectronicVRCLK

~ULTIPLEXER

~ULTIPLEXER

~ULTIPLEXER

NC
TCql62
TCql62

TCq

NC
NC
NC
NC
NC
A/O
GNO
Power

Muting

Power

Remote

8-bit
8-bit
8-bit
8-bit
8-bit
8-bit
8-bit
8-bit
5V

CLK
DATA

162

STB

IN

OFF

ISecond)

OFF

IPri

Control

A/D0(LSB)
A/O

I i 0

A/D

2 i 0

A/O

3 i 0

AID

4 0

A/D

5

A/D

6 0

AID

7

DATA
DATA
DATA

mary):INTO

Input

I_58)

&.Rch

A I 0
B I 0
C I 0

GNO

Vee

Pin

I/O

Name
011

I 0
I 0

012

I 0

013
014

I 0

DIS

I 0

ROO
ROI
R02

I 0

R03

I 0

RIO
I 0 RII
1 0

RI2

RI3

I 0
I 0

R20

R21

I 0
I 0

R22

I 0

R23

I

RAO

I RAI/Vdis

i 0

R30

i 0

R31

i 0

R32/INTO2243

i 0

R33/INTI2342
R50

i 0

R51
R52
R53
R60
R61

0

R62
R63

0

i

Vcc

VOIJI

Pin

No.

20
21

24
25
26
27
28

2q

3D
31
32

L...------4>---

Pin

Pin

Name

No.

I

64

010

Dq

2

63

3

62

08

4

61

07

5

60

06

5q

6

05

7

04

58

8

57

03

q

56
55
54
53
52
51
50

4q

48
47
46
45
44

41
40

3q

38
37
36
35
34
33

02
01

DO
GND
OSC

2

OSC

I
TEST
RESET
Rq3
Rq2

Rql

RqO

R83
R82
R81
R80
R73
R72
R71
R70
R43
R42/S0
R41/SI
R40/SCK

10
II
12
13
14
15
16
17
18
Iq

Function

I/O
I 0

ElectrooicVRRch
ElectrooicVRLch

I 0

ElectronicVRDATA

I 0
I 0

LC7582
I 0
I 0
I 0

i 0
i 0
i 0

i 0
i

i

i
i

i
i
i
i
i

i 0
i 0
i 0
i 0

INHi

LC7582

DATA

LC7582

CLK
LC7582CEIRch)
LC7582CEIL&.Rch)
LC7582CE(Lch)
Key

Output f I

Key

Output f2

GND

OSC
OSC

5V

RESET

GNO

Input IFuncti

KEY

Input

KEY
KEY

Input

KEY

Output

0

KEY

Output f4.

0

KEY

Output f5

0

KEY

Output

0

KEY

Output

0

KEY

Output

0

KEY

Output fq

0

KEY

Output flO

0

GNO
KEY

Input IFuncti
Input

KEY

Input

KEY

Lch
Lch

f3

f6
f7
f8

Rch
Rch

-<l>---

I

CS
CS

on)

UP

O~

Note)

on)

UP

O~

~~--

I

0

i

o...Standerd Output

High

Voltage Input

High

Voltage Output

Standerd

.....

Input

~

Common

5

•

DISPLAY

Pin Connection

LCD:PSALFD6C80

SEGMENTS

CO

......

ON

No.

I 2 3 4 5 6 7 8

-

COM
COM2COM-AI2
COM
COM

No.
COMIEI3
COM
COM

COM

No.

COM
COM
COM
COM4J8 J6

COM

I

3

4

2
3
4

I
2
3JqJ7

AI3

- -

- -

-

- -

2q

E

31

30

Eq

Ell

12

EI0E8E6 E4

- - - - -

- - - - -

57

5q

58

-

-

-

- - - - -

J5J3JI
J4J2113

All
AIO

- - - - -

32 33
E7

60

- -

A

Aq

A7 A5 A3

A8

A6

A4

A2

- - - - -

34

35 36 37 38

E5

E3EIFI2
E2

FI3 FII

- - -

- - - - -

61

64

62

63

- - - - -

- - -

112 110
III

18 16

Iq

17

q

10

AI

BI2

BI3

BII

- - - -

- - -

FlO

F8

Fq

F7 F5 F3

- - -

65

66

- - -

14

15 13

II

12 13

BIO

B8

Bq

B7

-

3q

40

F6 F4 F2

-

- - -

67

68

- -

-

12

HI3HII

II

HI2

HIO

16
CI3
CI2

17 18
CII
CIO

Cq

C8 C6

B6

B4

B5 B3

14

15
B2
BI

- - - - - -

-

- - - - - -

41

42

GI3

FI

GI2

- - -

-

- - - -

6q

70

43 44
Gil
GIO

71

Gq

G8

72

45 46 47
G7 G5

G4

G6

- -

-

73

74 75 76

- - - - - - -

- -

- -

Hq
H8 H6 H4 H2

H7

H5 H3

- - -

HI

MEt.IOIdIe

EO

EQONIe

FLAT

Iq

20

C7 C5

C4

-

-

48

G3

GI

- -

G2

- -

- -

21

22 23
CI

C3

013

C2

- - -

- - -

4q

50

- -

COM

COM

-

-

- -

77

-

-

78

- - - - -

- - - - -

Ib

Ig

la P

24

25

012

010

08

Oq

011

51

07 05 03

- - - - -

- - - - -

52

53

- - - - -

-

-

COM

7q

If

-

COM

-

80

COM

-

- -

EO·REC

EVER~~

81

._~

-

COM

26 27

06

54

SOURCE

TAPE

04

55 56

-

JI3JII
JI2

JIO

28
02
01

-

6

•

WIRING

MAIN

PANEL

Circuit Boord

Circuit Boord

EQ-630

.,

r

1

I

2

I

3

I

4

L

J1

J2

r

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I

2

I I

3

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4

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5

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6

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7

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8

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9

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10

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11

I

12

L

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3

,

4

,

5

,

6

I

7

I

8

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9

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,

10

11

L

J401

I

2
3

4

5
6

5,'

(l)

~5

a',

I

I
I

.J

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6,'

81

PANEL

2

Circuit Boord

3

I7l

4

LCD

401

Unit'

J402

r

,

I I

2

,

3

I

4

J2

-,

,

,

2
3

,

4

I

5
6

,

7

I

8

I

9

I

10

I
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-,

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2:5

50

PANEL

11

Circu" Boord

'2
1

J3

2
3
4
5
6

7

8

9

10

11

J4Ql

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3

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6 1

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7

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J405

r

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2

I

3

I

4

,

5

I

6

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7

I

8

L

J402

-,

1

2

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PANEL

3

I

Circuit

Boord

4

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J403

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1

,

2

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3

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4
5

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6

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-,

1

I

2

I

3

I

4

I

5

I

6

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7

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1
2

I

3

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4

I

5

I

6

I

7

I

8

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151

Boord

(4)

PANEL

Circuit Boord(31

.DESCRIPTION

(Relationship of

EO

switch

EO

REC

switch

~t

6,5

81

:

5,1

6:5

81

LCD

402

Unit

OF OPERATIONS

Switches)

OFF

OFForON

REC

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I I

....

EO

!

~5

:

50

1

~,

:

:

50

OFF

I
I

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--0,

PLAY

J406

r

1

I

2

,

3

'-

ON

ON

I
I

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I

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REC

,

,

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,

PANEL

2

3

Circuit Boord (61

I

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I

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I I

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7

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• BLOCK

REC

OUT

~"~

LINE

OUT

LINE

IN

PLAY

@----o

TAPE

DIAGRAM

llCl

0

0

~IC1

~

........

ICl

ICl

~

I

~C2(1/2)

r-17

+"BUFFER

r

r--

r----v

IC3

BPF

IC6
(1/2)

BUm:

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

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V

IC9(1/2)

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ch

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-

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~

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up

BAT.

1 I

r--

RA

IR5C

AG(

I

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L

X

f--

r---

.....

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IC7(

1/2)

BPF

IC5

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LEVEL

--

--

r

I

I

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--

R

ch

--

--

--

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1

8

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CONTROL

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9

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-

7'r7

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up
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I
I

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~

-

+SV

RAO

R50~53

R60

....

63

IC401

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CO

R40",R42
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R70"-73
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+15V

07

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/

-

R92-

M2

M4

M1

11
11
11

01

11

I

I

M3
12

160Hz)

12
12
12 13

I

DO

I I

(120Hz)

M

R92

01,00

05
06
07

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---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

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

19

R71

ANALYZE

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

f7

17
17

R73

I

f-----

LC

-

-

LCD

r----

402

19

I

REVERS

110

(16kHz)

110

110

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

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A