It is either the Lens is dirty or the recording Laser has faulted.
Can you use a Lens cleaner on the recorder, such as this one
Clean the lens and once done, try to record.
If it still does not record, it will be either the recording Laser or the mainboard that has faulted and would need to be replaced.
In this event, you going to have to return the unit to have a diagnostics performed and the faulting component replaced. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you.
If you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
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