Resolve "Screen File Mismatch" on the DM300C, DM400C, DM450C and DM475

Products affected: DM300C™, DM400C™, DM450C™, DM475™


The meter displays "Screen File Mismatch" and the meter will not turn on.


The internal meter software has malfunctioned.


You may be able to clear the error by restarting the meter. Follow these steps to restart safely:
  1. Unplug the power cord.
  2. Wait one to three minutes.
  3. Plug the power cord back in, ensuring that it is plugged directly into a wall outlet.
If the issue is not resolved, contact client support. Please have your model number ready.

UPDATED: September 01, 2017