New ImageClass LBP6780dn doesn't "see" paper in tray. Prints from side tray only.

[and23]

I purchased my LBP6780dn online and it is under warranty, but before calling the company I wanted to ask here, because maybe I am missing something - or doing something wrong.

I have 1 paper tray filled up with paper, but when I send a document to the printer - it won't print because of "no paper".

So I have the side tray opened and it only prints from there.

Questions:

Is there a sensor that I could access or "clean" maybe?

[Patrice]

Hi and23.

I will be glad to assist you.

So that I can better assist you, what size paper is loaded in the cassette tray of the LBP6780dn?  Also, has the paper size been registered on the printer?

I look forward to your reply.  Should you need immediate assistance, please contact us at 1-800-OK-CANON (1-800-652-2666).

[and23]

Thank you for your reply

The paper size is A4 and it is loaded in the bottom loader.

Since it can't print from there - I always have some pages in the side opened tray.

The printing problem was intermittent in the beginning.

I initially didn't notice - it was like it would get stuck with this error "no paper" - I had to push few buttons and it would start printing without any further problems.

So it did print from the bottom loader and I did not need to play with the side tray.

I did not change anything since I bought the printer - even the paper is from the same package.

(I do not print much - and it is my first paper pack I bougth)

The printer page shows the following:

Paper Information

Paper Source

Multi-Purpose Tray           Loaded                 LTR (LT)

Drawer 1                            Loaded                  A4

I did not set the paper size.

Does the above mean I need to select A4 for both?

How?

Thanks,

A