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Onkyo R-21 Service Manual

Onkyo R-21 Service Manual covers following topics:

  • How to repair Onkyo R-21 Quartz Synthesized Tuner Amplifier?
  • How to maintain and fix your Onkyo R-21 Quartz Synthesized Tuner Amplifier?
  • Specifications, Service procedures, Exploded view, Parts list,
  • Block diagram, Microprocessor connection diagram, IC block diagrams and descriptions,
  • Description of bottom board, Packing view, Adjustment procedures,
  • Printed circuit board views from bottom side, Schematic diagram,
  • Printed circuit board views from Bottom side, Printed circuit board-pans list
Onkyo R-21, R-31 Quartz Synthesized Tuner Amplifier Service Manual
Onkyo R-21, R-31 Quartz Synthesized Tuner Amplifier Service Manual
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Onkyo R-21 Service Manual

(Book ID=38292 Added on August 15, 2012) Onkyo R-21 Service Manual covers Repair Guide, Troubleshooting, Parts List, Exploded diagram, Wiring Diagram, Schematics, Assembly and dissembly of equipment. Using Onkyo R-21 Service Manual, you will be able to get answer of common questions regarding equipment  like:
  • How to open and clean Onkyo R-21 Service?
  • How to fix broken Onkyo R-21 Service?
  • How to solve various error codes?
  • How to repair broken parts and various part numbers?
  • What is the meaning of various buttons and indicators on device?
  • How to carry out alignment and routine servicing of your device?
Onkyo R-21 Service Manual by SRmanuals is scanned from original paperback copy of the Onkyo R-21 Service Manual and are guaranteed for high quality scans. We have tried utmost care to make sure completeness of manual. This is the one used by company people for their internal use and hence many of them are copyrighted by respective companies. In real world we hardly see Onkyo R-21 Service Manual in paperback or softcopy and hence we have created this website which will give you access of such a huge collection of service manuals at a rock bottom price. We are slowly increasing availability of service manuals on this website and if you can not find what you are looking for, please contact us and we will be happy to provide you if we can get hold of it. Many people ask us from where do we get all these manuals. Just to clarify, we are a big service provider for almost all electronic items and hence we have server access to majority of company website. These server access are the main resource of our library. We are also looking for any opportunity to exchange both server access and service manuals and anyone interested can contact us. Enjoy your

Onkyo R-21 Service Manual

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Below is example of common troubleshooting you can do using this service manual

Service Procedure of the Onkyo R-21

Change of voltage
Worldwide models are equipped with a voltage selector to conform with local power supplies. This switch is located on (he back panel. Be sure to set this switch to match the voltage of the power supply in your area before turning the power switch on.

This switch is set to 220V at the factory. Voltage is changed by sliding the groove in the switch with the screwdriver lo the right or left. Confirm that the switch has been moved all the way to the right or left before turning the power switch on.

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