Yamaha K-1020 Service Manual

Also see for K-1020: Owner's manual Owner's manual Service manual Service manual Owner's manual

$,t^STEREOCASSETTEDECKK-l0nI FRONT PANEL;a IJITPORTANTNOTICEThis manual has becn providcd for the use of authorizedYamaha Retailersand their servicepersonnel.It has been assumedthat basicserviccproccduresinhcrantto the industry,and more specificallyYamahaProducts,are alrcadyknown and understoodby the users,and havethereforcnot beenrcstatcd.WARNING: Failure to follow appropriateserviceand safety procedureswhcn servicingthis productmay result in personaliniury, dcstructionof expcnsivccomponentsand failure of theproduct to perform as specificd.For thescreasons,we adviscall Yamahaproductownersthat all serviccrequired should be performedby an authorizcdYamahaRetaileror thedppointedrervice reprerentativc.IMPORTANT: The prescntationor salc of this manual to any individualor firm does not constituteauthorization, ccrtification, recognition of any applicabletechnical capabilitites,orestablisha principle agentrelationshipof any form.Thc data provided is belicvedto be accurateand applicableto the unit/s indicatcdon the covcr. Thercscarch,engineering,and scrvicedepartmentsof Yamaha are continually strivingto improve Yamahaproducts.Modificationsare,therefore,inevitableand changesin specificationare subjectto changewithoutnotice or obliSationto retrofit. Should any discrepancyappcar to exist, pleasecontact the distributor'sServiccDivision.Static dischargcscan destroyexperrsivecomponents.Dischargeany staticelectricityyourbody may have accumulatedby groundingyourselfto the groundbussin the unit (heavygaugeblack wiresconnectto this buss).Turn the unit OFF during disassemblyand parts replacement.Recheckall work beforeyou apply power to th€ unit.IHYAMAIIA .,",,,""- !.!.,-! !,ts,+[-t@@- L-rL') AL-t ::u Lt,t_t Lt lE :rr:rr_- t-@EE[---f--ffir-ilILIL- -(D'S,0 (DilI CONTENTSTOSERVICEPERSONEL ........1REARPANELS... .....1BLOCKDIAGRAM ......2SPEC|F|CAT|ONS. ......3INTERNALVIEW. ......3DISASSEMBLYPROCEDURES. ..... 4-6MECHANICALADJUSTMENTS. 7 -9ELECTRICALADJUSTMENTS. ....9-11LSI DATA TABLES 12TIMINGCHART .......13PRINTEDCIRCUITBOARD (PatternSide) . . 14 - 17wtRtNG .. .. .. . 18fcBLocK ..19-21SCHEMATICDIAGRAM .....22,23PARTSLTST. .24-36SINCEI'87@YAMAHANIPPONGAKKICO.,LTD.HAMAMATSU,JAPAN2.5k 533El @ Printedin Japan.'85. I