This repair manual contains comprehensive information for servicing and repairing your Marantz SR5300/SR6300 AV Surround Receiver. It includes detailed diagrams, schematics, troubleshooting guides, and step-by-step instructions covering all aspects of the receiver, allowing you to diagnose and repair any issues you encounter. With this manual, you can save money by performing repairs yourself rather than relying on expensive repair shops. You'll have the same information that professionals use to make informed decisions about your receiver's repair. This manual is an invaluable tool for anyone who wants to understand the inner workings of their Marantz receiver and perform their own repairs.