During the preventive maintenance (pm) at zoll, the top half of the autopulse platform's (sn (b)(4) lcd was observed to be blank.The root cause for the observed lcd problem was a defective lcd, likely attributed to the aging of the device.The autopulse platform was manufactured in 2009 and is 14 years old, well past the expected serviceable life of five years.The defective lcd was replaced to address the observed problem.Upon visual inspection, no physical damage was observed.During functional testing, the autopulse platform powered on and performed compressions without any fault or error.Following service, the brake gap inspection was performed and verified the brake gap was within the specification.A load cell characterization test confirmed that both cell modules function within the specification.The autopulse platform passed the final run-in test using the 95% patient large resuscitation test fixture (lrtf) with good known test batteries until discharged without any fault or error.Historical complaints were reviewed for service information related to the reported complaint, and there was no previous history of complaints reported for autopulse platform with sn (b)(4).
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