LJ 4050 empty tray 2 error

honolulu808 · ‎09-26-2019

HP LJ 4050 has paper in tray 2 but printer says it's empty. Any ideas?

Repairatrooper · ‎09-26-2019

Either the tray is not lifting properly or the sensor in the tray cavity is not working. Easiest way to see is to turn printer around so you can look from the back of the printer into the printer cavity and ensure that the paper is being lifted into position when the tray is inserted. A flashlight helps. If the paper is lifted then either the sensor has failed for the trigger for the sensor is broken.

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honolulu808 · ‎09-30-2019

Thanks Repairatrooper. I see the tray lifting. Could you guide me where the trigger for the sensor is? Thanks.

Repairatrooper · ‎09-30-2019

If you look in the paper drawer cavity you will see a black level in the middle of the tray. This lever is pushed up by the rising paper and trips sensor PS101. If that sensor is bad or the lever is broken this error will be generated.

If you find the information provided useful or solves your problems, help other users find the solution easier by marking my post as an accepted solution. Clicking "yes" on "was this reply helpful" also increases the chances that this solution will help others.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.

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