编号3：雅马哈YAMAHA-xv450功放维修图纸手册

AV RECEIVER/AV AMPLIFIERRX-V550/HTR-5750RX-V450/HTR-5740/DSP-AX450SERVICE MANUALIMPORTANT NOTICEThis manualhas been provided for the use of athorizd YAMAHA Retailers and their service personnel.It has been assumed that basic service procedures inherent to the industry,and more specifically YAMAHA Products,are alreadyknown and understood by the users,and have therefore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury,destruction of expensive components,and failure of the product to perform as specified.For these reasonswe advise all YAMAHA product owners that any service required should be performed by an authorizedYAMAHA Retailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual toany individualor fim does not constitute authorization,certification orrecognition 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.andservice departments of YAMAHA are continually striving to improve YAMAHA products.Modifications are,therefore,inevitableand specifications are subject to change without notice or obligation to retrofit.Should any discrepancy appear to exist,pleasecontact the distributor's Service Division.WARNING:Static discharges can destroy expensive components.Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground buss in the unit (heavy gauge black wiresconnect to this buss).IMPORTANT:Turn the unit OFF during disassembly and part replacement.Recheck all work before you apply power to the unit.■CONTENTSTO SERVICE PERSONNEL2AMP ADJUSTMENT/了>プ部調整.43IMPEDANCE SELECTOR.3IC DATA44-49FRONT PANELS..n4-6BLOCK DIAGRAM…50-51REAR PANELS...7-15DISPLAY DATA .....52REMOTE CONTROL PANELSm.16PRINTED CIRCUIT BOARD53-73SPECIFICATIONS/参考仕樣.17-18PIN CONNECTION DIAGRAM......…74INTERNAL VIEW....…18SCHEMATIC DIAGRAM............75-85DISASSEMBLY PROCEDURES/分解手顺.19-21PARTS LIST87-123SELF DIAGNOSIS FUNCTION(DIAG)/REMOTE CONTROL..124-125自己診断機能（ダ亻了）…….....2242二)竹一上入了二1了儿体、工3マ一夕隔定)再生纸态使用T儿'米寸。This Service Manual uses recycled paper米YAMAHA100884YAMAHA CORPORATIONP.O.Box 1,Hamamatsu,Japan