HP LJ 2420dn 13.20.00 error paper jam inside rear door

HI,

Could you please help on the above error?

I tired to clean the rollers, dusted off the printer, reseat the fuser and still get this error.
The printer belongs to a client of mine. He put a new toner in and the erro come up. even when he puts the old toner back in the error remains !

I am leaning towards repalcing the fuser.

Your thoughts?
RemapAsked:
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AllTripConnect With a Mentor Commented:
Typically if there is no paper jam but the printer thinks there is, it's the sensor.  If there is in fact paper getting jammed at the rear of the printer, it is caused by a bad fuser unit.  Replacing the fuser will fix the latter.
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AllTripCommented:
Sounds like the sensor located on the fuser either is not working right or has paper in it in the front where you can't see. My suggestion would be to take a flashlight and try to really look to the fuser end from the front (remove the cartridge and try to look back). With these errors, I generally have to remove the fuser from the back and pull the paper out. For some reason that paper is getting stuck. The last repair call I did on this error was due to someone printing labels.
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RemapAuthor Commented:
There is no actually paper stuck.

I did remove the fuser, blew with the compressed air. Looked arounf it and inside the printer. Could find anything suspicious.
Where actually is the sensor on the fuser?

It would be strange as the error came after replacing the toner.
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RemapAuthor Commented:
The motor of the printer does not even work. If there was a sensor I beleive the motor would work.
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AllTripCommented:
If the motor of your printer isn't working you might want to consider a replacement.  The cost to replace the motor of that model printer costs more than that printer is worth.  I've survived several of these type printers and that error message usually is the sensor.  Printer won't ever attempt to print because it thinks there is a jam in the rear.  You can get a nice refurbished HP LJ 2015 on Amazon for under $100
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RemapAuthor Commented:
So you suggest to replace the motor? By saying this do you mean the fuser?
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AllTripCommented:
If the paper is getting physically jammed in the back of thevprinter then yes you have a bad fuser
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