Other text: h6: event problem and evaluation codes: updated.H10: device evaluation: the device was returned for investigation.A visual inspection and functional test were performed.Visual inspection found the device was received in with a cracked peep knob and missing four small end caps, the cpap knob contains marks, bottom casing contains a minor crack, the threads on the vrv block manifold have stripped, variable relief valve is now loose.Internal inspection shows contamination of foreign material.The customer stated problem was duplicated, unable to spin the knob to its min and max settings.Replaced bottom chassis, vrv block manifold, housing, function switch, and 2 small knobs.Installed mri battery, sintered filter, and o-rings for the pm.Reset patient pressure cycling led and adjusted cpap control to tolerance.Performed pm, cleaned device and affixed new service label.The cause of the reported problem was traced to the customer manipulation of the device.The previous service history has been reviewed and is deemed unrelated to the current customer reported problem.
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