# Apply the catchall diagnosis step ## Problem environment During testing of firmware development, several circuits require time consuming diagnosis. A [manufacturer errata document](http://ww1.microchip.com/downloads/en/DeviceDoc/SAM-R34-R35-Errata-Sheet-DS80000834A.pdf) serves to avoid time loss. ## Steps to reproduce 1. Review both online and archived errata ## Expected result Help is found to resolve problems during firmware development. ## Notice Refer to either *SAM-R34-R35-Errata-Sheet-DS80000834A.pdf* or *Known\ Issues\ and\ Workarounds\ +\ FAQ\ -\ Rev.A.pdf*.

The errata documents were reviewed and the design modified accordingly.