Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
The Paper Source means the paper tray, or where the paper is to be fed from on the printer.
How is it currently set? If set to Auto, that might introduce problems.
Let me know please, and I will advise you further in detail. Thanks.
Hi Patricia. My name is*****'m sorry that you're having this problem. I will do my best to help.
This message is displayed when an unsupported paper size or paper type is selected for the paper source. See the table below for the supported paper sizes and paper types.To make a copy:
Note: The LCD displays the current Copy settings.
Please give this a try while I research the correct settings for printing envelopes.
If you are only printing a single envelope, it is best to use the rear feed slot.
Please do the following:
Open the rear paper feed slot and push it back.
Always follow these paper loading guidelines:
If you're going to print several envelopes, you'd need to load them into the cassette. You can print on plain paper envelopes in this size: No. 10 (4.1 × 9.5 inches [105 × 241 mm]). If your product has two paper cassettes, you can load No. 10 size envelopes in Cassette 1 only.
Caution:To prevent paper feeding problems, make sure you do not load too many envelopes in the cassette.
Note: The envelopes may slide forward slightly as you insert the cassette. This is normal.
Please give this a try and let me know how it works for you. If this solves the problem, would you mind taking a moment to rate my service? You can give your rating by selecting the stars located on the top right of the question page. I'd really appreciate it! Without a positive rating I am not credited for my answer. If this doesn't solve the problem be sure to let me know so we can continue troubleshooting.
For your convenience, I am providing a link to the user manual for your printer. This manual is in pdf format and can be saved to your computer for later viewing or printed out (just keep in mind that it is 347 pages). Hopefully you will find it to be useful.