Akai-A520-int-维修说明书手册含电器原理图

THE QUALITY OFTHIS MANUAL ISTHE BEST THATIS AVAILABLESTEREO INTEGRATED AMPLIFIERA-520SERVICE MANUAL■FRONT PANELYAMAHA交E交O台'吕白⑩IMPORTANT NOTICEFor Service Manuals ContactThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel.MAURITRON TECHNICAL SERVICESIt has been assumed that basic service procedures inherant to the industry,and more specifically Yamaha8 Cherry Tree Rd.ChinnorProducts,are already known and understood by the users,and have therefore not been restated.Oxon OX9 40YWARNING:Tck01844-351694Fax-01844-352554may resultEmail:-enquiries@mauritron.co.ukons,we advise aamana product ownersappointed service representative.MPTANT:The presentacion o sale of thisinrm doesstabihpwincio1agatTeiha8technicalThe data provided is believed to be accurate and applicable to the unit/s indicated an the cover.Theresearch,engineering.and service departments of Yamaha are continually striving to improve Yamahaproducts.Modifications are,therefore,inevitable and changes in specification are subject to change withoutnotice cr obligation to retrofit.Should any discrepancy appear to exist,please contact the distributor'sService Division.WARNING:Static discharges can destroy expensive components.Discharge any static electricity yourbody may have accumulated by grounding yourself to the ground buss in the unit (heavygauge black wires connect to this buss).IMPORTANT:Tur theunit OFF during disassembly and parts replacement.Recheck ail work beforeYou apply power to the unit■CONTENTSTO SERVICE PERSONNEL,,,,,·,,,···,···1ADJUSTMENTSwPRINTED CIRCUIT BOARD,·.·.··.,····4BLOCK DIAGRAM。。。。。。……··。””””WIRINGSPECIFICATIONSSCHEMATIC DIAGRAM.·..····5INTERNAL VIEW。。。。。。。………。。·t”…3PARTS LIST....,,,,,,,,,,,···611DISASSEMBLY PROCEDURES.,.·,···SINCE 1887004577YAMAHANIPPON GAKKI CO,LTD.HAMAMATSU.JAPAN2Prnted in Jagan34.10