Thank you for using the Support Forum. Envelopes can be fed only from the Bypass tray.
Check that the envelopes are within specification.Carefully read and adhere to the following guidelines when using envelopes in the Bypass Tray:
• Always ensure that the Bypass tray guides are against the edges of the envelopes.
• Check that the attributes of the paper tray are set correctly.
• Some wrinkle is expected on the back of the fed envelope.
If this does not help please consider contacting your support centre for further assistance.
Just wondering if i can get some tips on how to run different sizes of envelopes on the D-125 from the tray 5 or 6?