The trimmer operator's console can remain at its existing location, but it is rarely used. But if the GMR is not functioning, most mills stop and fix it because the advantages of having it working are so valuable. In the mill pictured below, the operator has been replaced by the GMR. While the console is not needed for GMR operation, if the scan head is damaged or the GMR power supply damaged by power surge, the trimmer can be operated in the manual mode until repairs are made. The same logic applies to lumber sorter control consoles. Indeed, certain sorter control functions, such as emergency stop, still need to be available for manual use.