Yorkville-CA1T-pwr-sm 维修电路原理图.pdf

U.S.A. Yorkville Sound Inc. 4625 Witmer Industrial Estate Niagara Falls, New York 14305 USA Voice: (716) 297-2920 Fax: (716) 297-3689 WORLD HEADQUARTERS WEB ACCESS: http:/ CANADA Yorkville Sound 550 Granite Court Pickering, Ontario L1W-3Y8 CANADA Voice: (905) 837-8481 Fax: (905) 837-8746 Quality and Innovation Since 1963 Printed in Canada SERVICE MANUAL CA1 / CA1TRadioFans.CN 收音机爱 好者资料库Manual-Service-ca1-ca1t-1v00.pdfIMPORTANT SAFETY INSTRUCTIONSsafety-4v3.eps Oct. 26/05CAUTION:TO REDUCE THE RISK OF ELECTRIC SHOCK, DONOT REMOVE COVER (OR BACK).NO USER SERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIEDSERVICE PERSONNEL.INSTRUCTIONS PERTAINING TO ARISK OF FIRE, ELECTRIC SHOCK,OR INJURY TO PERSONSRead InstructionsThe Owners Manualshould be read and understood before operation of your unit. Please, save these instruc-tions for future reference.PackagingKeep the box and packaging materials, in case the unit needs to be returned for service.WarningWhen using electric products, basic precautions should always be followed, including the following:Power SourcesYour unit should be connected to a power source only of the voltage specified in the owners manual or as marked on the unit. This unit has a polarized plug. Do not use with an extension cord or receptacle unless the plug can be fully inserted. Precautions should be taken so that the grounding scheme on the unit is not defeated.HazardsDo not place this product on an unstable cart, stand, tripod, bracket or table. The product may fall, causing serious personal injury and serious damage to the product. Use only with cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the product. Follow the manufacturers instructions when installing the product and use mounting accessories recommended by the manufacturer.The apparatus should not be exposed to dripping or splashing water; no objects filled with liquids should be placed on the apparatus.Terminals marked with the “lightning bolt” are hazardous live; the external wiring connected to these terminals require installation by an instructed person or the use of ready made leads or cords.Ensure that proper ventilation is provided around the appliance.No naked flame sources, such as lighted candles, should be placed on the apparatus.Power CordThe AC supply cord should be routed so that it is unlikely that it will be damaged. If the AC supply cord is damaged DO NOT OPERATE THE UNIT.ServiceThe unit should be serviced only by qualified service personnel.AVIS:AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE,NENLEVEZ PAS LE COUVERT (OU LE PANNEAU ARRIERE) NE CONTIENT AUCUNE PIECEREPARABLE PAR LUTILISATEUR.CONSULTEZ UN TECHNICIEN QUALIFIEPOUR LENTRETIENTINSTRUCTIONS RELATIVES AU RISQUEDE FEU, CHOC LECTRIQUE, OUBLESSURES AUX PERSONNESVeuillez Lire le ManuelIl contient des informations qui devraient tres comprises avant lopration de votre appareil. Conservez S.V.P. ces instructions pour consultations ultrieures.EmballageConservez la boite au cas ou lappareil devait tre retourner pour rparation.Attention:Lors de lutilisation de produits lectrique, assurez-vous dadhrer des prcautions de bases incluant celle qui suivent:AlimentationLappareil ne doit tre branch qu une source dalimentation correspondant au voltage spcifi dans le manuel ou tel quindiqu sur lappareil. Cet appareil est quip dune prise dalimentation polarise. Ne pas utiliser cet appareil avec un cordon de raccordement moins quil soit possible dinsrer compltement les trois lames. Des prcautions doivent tres prises afin deviter que le systme de mise la terre de lappareil ne soit dsengag.RisqueNe pas placer cet appareil sur un chariot, un support, un trpied ou une table instables. Lappareil pourrait tomber et blesser quelquun ou subir des dommages importants. Utiliser seulement un chariot, un support, un trpied ou une table recommands par le fabricant ou vendus avec le produit. Suivre les instructions du fabricant pour installer lappareil et utiliser les accessoires recommands par le fabricant.Il convient de ne pas placer sur lappareil de sources de flammes nues, telles que des bougies allumes.Lappeil ne doit pas tre expos des gouttements deau ou des claboussures et quaucun objet rempli de liquide tel que des vases ne doit tre plac sur lappareil.Assurez que lappareil est fourni de la propre ventilation.Les dispositifs marqus dune symbole “dclair” sont des parties dangereuses au toucher et que les cblages extrieurs connects ces dispositifs de connection extrieure doivent tre effectivs par un oprateur form ou en utilisant des cordons dj prpars.Cordon dAlimentationvitez dendommager le cordon dalimentation. NUTILISEZ PAS LAPPAREIL si le cordon dalimentation est endommag.ServiceConsultez un technicien qualifi pour lentretien de votre appareil.RadioFans.CN 收音机爱 好者资料库 A method of changing the source of the zone power from 100 volt to 70volt The Yorkville CA1 commercial install amp has both 70 and 100volt capability. When a customer wishes to convert the zone output from 100 volts down to 70 volts, he may follow these easy steps to modify the supply board which is the middle of the three barrier strips on the rear of the unit. 1) remove the main chassis cover 2) while facing the rear of the unit, remove all 3 of the speaker terminal strips 3) the top and bottom strips will come out easily but you will probably have to unsolder and remove the yellow varistor from the middle terminal strip. This is a little tricky because you will have to unscrew the middle strip and flip the amp over to gain access to the solder on the varistor. 4) Once the middle strip is free of the chassis all you have to do is cut one trace and add one jumper as shown in the following before and after photos. 5) After you have made the mod to the board , re-install all the strips and the cover. 6) The first photo shows the trace side of the middle barrier board without the cut and jumper added. 7) The second photo shows the same board with the trace cut above the last pin on the right and a jumper added between the last pin and the fourth from the last pin. 8) That is it except for re-assembly. CUT HERE