X576dw false paper jam

[Heywud]

HP Officejet Pro x576dw MFP getting following error message:

Paper is jammed. Open the left door and clear any paper.  Once done, touch ok.

I follow the directions, never find a paper jam then hit ok.  Same message appears.  After repeating several times it prints perfectly.

Please help!

[Valsimot]

HP Pro X576dw uses optical sensors to read paper presence and detecting jammed paper.

Those sensors get dusty and dirty and start to make false paper jams occasionally, I use compressed air to blow dust from them to make them cleaner. 

[Heywud]

Thanks for the response.  I can do that but I just need to know how to identify them and where they are. Can you point me to a diagram or photograph?

How many are there?

[Valsimot]

Don't have that model at this time, found this picture online that shows the location of one optical sensor.

Remove the duplex assembly, and give a printer a good cleaning with compressed air, if possible use vacuum cleaner to vacuum the dust at the same time from the printer while blowing with air.