Cannot Receive A3 Size Faxes

Check that the paper size setting of the paper source that contains A3 paper has been set to A3, and that the paper source is set for use with the fax feature. Select Settings > General Settings >Printer Settings > Paper Source Settings > Auto Select Settings > Fax, and then check the enabled paper source(s).

Select Settings > General Settings >Fax Settings > Basic Settings > Receiving Paper Size, and then check that A3 is selected. This menu allows you to set the maximum size of fax that the printer can receive.