During the preventative maintenance (pm) on (b)(6) 2024, zoll service personnel could not perform the functional testing of the returned autopulse platform (b)(6) due to the sticky drive shaft rotation.The platform's driveshaft was not rotating smoothly, exhibiting binding and resistance due to having a sticky clutch plate, likely attributed to the device's aging.The clutch plate was replaced to address the sticky shaft problem.The autopulse platform was manufactured in 2017 and is 7 years old, past the expected serviceable life of 5 years.Upon visual inspection, the battery box screw receiver was observed to be damaged.The physical damage appeared to be the characteristic of user mishandling.The screw receptacles in the battery box were repaired with putty to remedy the damage.Following service, the autopulse platform passed the final run-in test without any fault or error.Historical complaints were reviewed for service information related to the reported complaint, and there were no similar complaints reported for autopulse platform with (b)(6).
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