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The reported complaint that "the autopulse platform (sn (b)(6)) displayed "system error, out of service, revert to manual cpr" error message" was confirmed during the functional testing and based on the review of the archive data.The root cause of the error message was due to the drivetrain motor brake assembly air gap being too wide, and out of specification, which is likely attributed to the age of the device.The device life expectancy is 5 years.The autopulse platform was manufactured in january 2011 and is over 14 years old.The archive data review indicated system error - 139 (unable to hold compression position), thus confirming the reported complaint.In addition, the archive noted the presence of the (ua) 17 (max motor on time exceeded during active operation) error message as a result of the drivetrain motor brake assembly air gap being out of specification.The autopulse platform failed initial functional testing due to the "system error, out of service, revert to manual cpr" error message displayed upon powering on, thus confirming the reported complaint.The investigation revealed that the drivetrain motor brake assembly air gap was too wide, which caused the ua139 error.The brake gap could not be adjusted and continued to open out of specification.The investigation found that the motor shaft dimples had widened/worn out.Therefore, the m3-.5 x 4mm set screws would not lock into the drivetrain motor shaft dimple locking well and caused the brake to disengage.The drivetrain motor assembly needs to be replaced to remedy the ua139 error.Waiting for customer approval for repair.Historical complaints were reviewed for service information related to the reported complaint, and there was no previous history of complaints reported for the autopulse platform with sn (b)(6).B3, the date of the event is unknown.
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