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HP Recommended
Laserjet 4050TN
Microsoft Windows 11

I have had this printer for many years without any problems. Suddenly the duplexer unt has stopped working and I get an error message saying FaceUp bin is open. I cannot find out what a FaceUp bin is but I discover that if I hold the top lid of the duplexer up it works. let it fall back down and it does not.

Any suggestions as to what the fault may be please?

1 REPLY 1
HP Recommended

On a old printer like this, often flags start sticking due to breakdown of the foam bumpers used. Cleaning and replacement of bumpers and contact surfaces is required.

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