QSC_Pre-1983_Products_Service_Manual维修服务手册含电器原理图

QSCPre-1983 OSC Products Service ManualTable of ContentsPageQSc Parts Substitution Data1Schenatic Diagran (PCB21A)46Nodel A3.61 Power Amplifierfodels20 throug钟40Service Instruction&3.7 throug钟5.1Schenatic Diagran (PCB21A)Power Amplifiers Specifications2Model A3.6 &.A4.1 Power AmplifierModel A20-40 SeriesScheratic Diagrans (PCB21A)Service Manual3-28Elininating turn-off transients inNulling residual hum inQSC Amplifiers A3.7-A5.1ode1sa3.6,a4.1,&5.0and A20-40 Series Amplifiers29Power Amplifiers50NE5530 IC substitution29ABridged-mono operation of theNodel A3.5 Power Amplifier5.1 Power Auplifier30(A3.51,A3.52)Service Instruction SchematicService Inforgation forDiag年an（PBO9B)52Power Amplifiers A3.7,A4.2,A5.131-33Model A3.7 Power AmplifierModel Al.1 Blectronic CrossoverSchenatic Diagran34Service InstructionModel A4.2 Power AnplifierSchematic Diagram54Schematic Diagran35Nodel A2.1 Blectronic CrossoverModel A5.1 Power AmplifierService InstructionSchenatic Diagra (PCB22A)55Schenatic Diagra36Model X2.2 Electronic CrossoverHodel A3.51 Power AmplifierSchenatic Diagra37Service Instruction&Model 12.2,X1.2 Power SupplySchematic Diagra道56Schematic Diagran38ode1X1.0,2.0,a.0,&a3.50Nodel A5.01 Power AmplifierSchematic Diagra里57Service InstructionHodel X1.0 Mixer Service InformationSchematicSchesatic Diagram (PCB22A)39Troubleshooting Chart forBantar濂IⅡGita证Amplifierode118.00Scbematic Diagra60Mode】A8.03 Feature GroupSchematic for42SadA即Schenatic Diagram(Pe820.l）61Bodel A8.03 Power Anp Schematic43Model A8.02 Lead Diagram每Speaker protection in professionalService Bulletin A8.0 Power Amplifier45audio systens62Bodel A4.11 Power AmplifierService Instruction&