Yamaha eq 630

Page 1

STEREO GRAPHIC EQUALIZER

EQ-63O

SERVICE MANUAL

I FRONT PANEL

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Remote Control Transmitter

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IMPORTANT NOTICE

This manuaI has been provided for m: use DI "mauled Vamaha REBIIUS and their servicc pbrscnnsz II has been asumcd that bay: servizc procedures inhelznt [0 Lb:
induslry. and morc svecificalIY Yamaha Products, 2r: afrcady known and undnrsload by d1: users and have LIIechOIC no! bctn resuled

WARNING Failure [0 Iolow 1ppropria|e serv ce 2nd salely procedures when senicmg UHS producr may result in persanzl m|ury. dusuuclian of cxpmsne component)
and laiIul: v! we product to perform as specificd. For Dies: reasons. we Advise 3 Yamaha produci owner) IIial all stnic: ieqwied shouId be DEIIoImEd by
an au murized Yamaha Retailer or me zvpninled service rcprzxenizli 1e

IMPORTANT: Thc prcscnuiiori or sale of {his manuaI to any indIviduaI or Firm does no! consliluLc aumoriuiion. cariificaxion, lemgnxxion of any applicabIe lechmcaL
(apabililies, 04 euablish A principIeagenl relaxianshic 0/ any Iorm

The daia provided is believed lo be mum m applicable :0 me uniusI Indicalcd on The ccver. The rcscalch, cngincering, and sen/It: dcpanmcnls ol Yamaha are cominuallv
siriving m imam»: Yamaha pruducls Modificaliom ale, lharcfurc, inevitable and Apecificalmm Ale wbieu m clung: Wilhaul nonre Dr ohligalinn m lelrofii Should any
discepancy appear to exIsL please conLaci me disuibuiol's Service Dwiston,

WARNING. Smir discharges can destroy exvensivc mmwneius. Discharge my \UiIiL eleclliLiiy your body "my have aucumuizred by grmlnd'mg yaurreir no me groanri
I buss in me LlnIl (heavy gauge black wire: conneci to mix busi),

IMPORTANT: Turn me unix OFF during disasszmny and can: raglancmenl. Rechenk aII wwk befolt you EDDI) Dowrl lo VJIE UnIL

I CONTENTS

TO SERVICE PERSONNEL.
SPECIFICATIONS .......
DIMENSIONS ...........
INTERNAL VIEW .........................
REAR PANELS ...........................
LITHIUM BATTERY. .... .................
OISASSEMBLY PROCEDURES. ...............

IC BLOCK .
DISPLAY PIN CONNECTIONS
WIRING
DISCRIPTIPN OF OPERATIONS ....... ... 7
BLOCK DIAGRAM ........................8 9
PRINTED CIRCUIT BOARD ............|O ~vI3
SCHEMATIC DIAGRAM .............. ...IA.I5
PARTS LIST ........................|6A~20

I YAMAHA

YAMAHA CORPORATION HAMAMATSU_JAPAN
3.7k-IAZ @@Printed in Japan '89::

wwNN-

059-03

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E0'630

E0-630

I TO SERVICE PERSONNEL

1. Critical Components Information.
Components having special characteristics are marked
and must be replaced with parts having specifioations equal
to those originally installed.

2. Leakage Current Measurement (For 120V Model Only),
When service has been completed, it is imperative that you
verity that all exposed conductive surfaces are properly
insulated from supply circuits.

0 Meter impedance should be equivalent to 1500 ohm shunted
by 0.1 spF.

o Leakage current must not exceed 0.5mA.

I Be sure to test for leakage with the AC plug in both polarities

I SPECIFICATIONS

Max. Output Voltage

(1 kHz, 0.1% T.H.D) .
Rated Output Voltage .........
Max. Input Voltage

(1 kHz)
Rated Input Voltage
Input Impedance .
Frequency Response
Center Frequencies ..

. 47 k ohms
. .. IOHZiSDKIIZ. ,1 dB
30 Hz. 60 Hz 120 Hz 240 Hz. 480 Hz 1 kHz. 2 kHz

4 KHZ 6 kHz 16 kHz,

Equallzer Control Range . . z I 2 dB
Signal-to-Nolse Ratio (IHF A Network)
AI1Voquut .. .tOSdB/IV

Total Harmonic Distortion
(20 Hz ~ 20 kHl, 1V output) ..

,. Less than 0 006%

I DIMENSIONS

EQUIPMENT
UNDER TEST

AC LEAKAGE TESTER
OR EQUIVALENT

®

WALL
OUTLET

43-

:3 L'-
INSULATING TABLE

Power Requirements
General model
Europe model.
Australia and U. K. modal: .
U.S.A. and Canada models ..

Power Consumption ..

Dimensions (W x H x D) .

. 110/120/220/240V 50/60 HZ
.. 220V 50 Hz
. 240V 50 HZ
120V 60 Hz
.......... 10W
435 x 122 x 271 mm
443/16 x 1041/16)
.35kgl7lbs ll 02)
PIn plug cords 12)
Remote control transmllter (I)

Dry battery SlZe 'AA (R06) type (2)
Power cord (1)

(trike

Weight . . . .
Aocesaorles

Specwlications subject to change wtthout notice

(U) U.S.A. model (B) ..... British model
(C) . Canadian model (G) ..... European model
(A) , Australian model (R) ..... General model

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