Yamaha EQ-630 Service Manual

Also see for EQ-630: Owner's manual Service manual

STEREO GRAPHIC EQUALIZER-• F~ONT PANEL" 12151HA~ I&~T'7iVOCAJ.. IBiTHEATEAi-;: JO 60 '?C24U .lac . ?~ J. 8. i~ _EOLEvElIc131~~.IIIIIIIIII~ft~;~,.YAMAHA NATURAL SOUNO GRAPHIC EOUALIZER. EO·63010 1·0clave BandSDer ChannelPEEDODDUu7EJS/EiC~e5vE61BI~uEDISERVICE MANUALYAMAHA Remote Control TransmitterIMPORT T onCEThis manual has been provided for the use of authorized Yamaha Retailers and ei se ice personnel. It has been assumed that basic se ice procedures inherant to theindustr ,and more specifically Yamaha Products, are already known and understood b the users, and ha e therefore not been restated.WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive componentsand failure of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed byan authorized Yamaha Retailer or the appointed service representative.IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification, recognition of any applicable technical.capabilities, or establish a principle-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of Yamaha are continuallystriving to improve Yamaha products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should anydiscrepancy appear to exist, please contact the distributor's Service Division.WARN ING: Static discharges can destroy expensive components. Discharge any static electrici ty your body may have accumulated by grounding yourself to the groundbuss in the unit (heavy gauge black wires connect to this buss).IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.• CONTENTSTO SERVICE PERSONNEL ..••••..•••...••.• ISPECiFiCATIONS .•••••..•••.........••.. IDIMENSiONS .•••.••••.•.••••..•.•..••.•. II NTERNAL VlEW •.••••..••••••..•....••.. 2REAR PANELS ••••.••••...••...••....•••. 2L~THIUM BATTERy •..•••••••••..••...••.. 3DISASSEMBLY PROCEDURES ••••..•••...••.. 3IC BLOCK ..........................•. 4--5DISPLAY PIN CONNECTIONS 6WI RING •....•.......................... 7DISCRIPTIPN OF OPERATIONS 7BLOCK 0IAGRAM ......................•. 8, qPR I NTED CI RCU IT BOARD 10 --13SCHEMATIC DIAGRAM ......•........... 14.15PARTS LIST 16--20}1002631 YAMAHAYAMAHA CORPORATION HAMAMATSU, JAPAN3.7k-142 ~~Printed in Japan '89.5