An investigation by Nidec has uncovered numerous issues with quality control. The company found 844 irregularities during the investigation.

Further details about the investigation and its findings are available from the source. The information provided does not specify the nature or scope of the irregularities, but it does confirm that a significant number were discovered.

For more information about Nidec's investigation and the quality-control irregularities it found, readers can consult the original report.