The device was manufactured in march of 1991 and has been in the field for over 25 years.The model was discontinued in march of 2010.The device will not be returned to the manufacturer for further evaluation because the customer re-attached the tube head and elected to keep the device.The customer indicated that the device had not been maintained in accordance with the device labeling.The gx-770 user manual (415-0169) states that in the interest of equipment safety, a maintenance program must be established by the device owner and periodic maintenance performed by fully qualified personnel on an annual basis.This concludes our investigation.
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