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Lawrencium
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Replace Duplexer message keeps persisting after I change it out with a new one

HP Recommended
HO Office Jet Pro X451dw
macOS 10.13 High Sierra

I have put a new duplexer in and it worked for the first day or two and now it is giving me the message replace duplexer non stop and wont do anything.   Is there a reset I need to do for this to let the printer know it has a new one in it?  The duplexer does not seem to have a chip or anything on it to let the printer know that it has been replaced.

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davidzuts
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HP Recommended

1. Open the Support Menu by pressing the Back button four times.

2. Scroll to System Configuration Menu, and then touch the OK button.

3. Scroll to Service ink container Or Duplex module, and then touch the OK button.

4. Scroll to Replace duplex module, and then touch the OK button.

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Lawrencium
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Hello - I am having this same problem as well.  I even ordered a new sensor and it worked for the first print I did and not it is giving me the same message over and over again like I didnt do a thing to it.  Im not sure about the press the back button 4 times it has done done anything for me or put me in to a new screen unless Im doing it worng.  Is your printer back up and running?

 

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