Rotel-RC1090-pre-si 维修电路原理图.pdf

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1、RC-1090 TRANSFORMER HUM MOD This modification is done to eliminate a hum that is heard from the transformer in the A. Rework Method for New Transformer 022T-1083T01 Substitution Step1,shortconnectpatternStep2,cutthepatternsStep3,replaceD903,D913bybridge“W02M”Step 4, replace transformer 022T1077T01 b

2、y022T1083T01Step5,SetupwiresBLKORGREDBLKBRWBRWTransformerInformation:CON4:22.7VDC,2.27A(afterbridge)CON5:25.0VDC,0.2A(afterbridge)CON6:2.25VACx2,0.2A22.7VDCRadioFans.CN 收音机爱 好者资料库+SS+SSMoredetailsofStep1andStep2MoredetailsofStep3RadioFans.CN 收音机爱 好者资料库BeforeChangeAfterChangeMoredetailsofStep5B. Rework Method for Temporary Strategy of Old Transformer 022T-1077T01 (Alternative option if there is no 022T-1083T01 transformer for substitution) Step1,shortconnectpatternStep2,cutthepatternsStep3,replaceD903,D913bybridge“W02M”Step4,CutwiresStep5,Redirectwires