During preventative maintenance (pm) of the autopulse platform (s/n (b)(4)), the zoll service personnel found that the lcd screen was dark and difficult to read in a dark environment.The root cause of the observed issue was the defective processor board, likely due to a defective component.During visual inspection, there was no physical damage observed on the autopulse platform.The autopulse platform passed the initial functional test without any fault or error.A load cell characterization test was performed and verified that both load cells were functioning within the specification.During device inspection, it was noted that the backlight of the display flickered briefly when the platform was powered on, and it went dark afterward.Troubleshooting the problem revealed that the processor board was defective, causing the lcd backlight issue.The defective processor board was replaced to remedy the fault.Following service, a brake gap inspection was performed and verified the brake gap was within the specification.The autopulse platform was subjected to a run-in test using the 95% large resuscitation test fixture (lrtf) with known good test batteries until discharged 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 serial number (b)(4).
|