Onkyo DV-C601 No Disc Error

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I've had the DV-C601 for a while now and it has performed very well. It recently started acting up and now I'm getting a No Disc error. I did a web search which brought me here. I've found some reviews on fixing this error, but have not been able to find the steps. Is their any one who can help, or point me in the right direction? Its greatly appreciated.

Sorry if this is the incorrect forum

Thank you