SOURCE: how to change the drum of hp color laser jet 2840
Here is a link to the hp web site with the manual giving full details on changing the drum. Look in the section called managing supplies.
HP Web Site
I hope this helps
Buddy
Corporate Computer
Over 21 years of PC and printer support/repair
SOURCE: HP Laser Jet 2840 50.2 Fuser Error
Usually this means that the fuser is not heating to the correct operating temperature. Remove the fuser and check all contacts. Be careful it can be very hot. Always let it cool down for atleast 30 minutes before touching the face of the fuser. After you check it over and clean off any contacts, reseat the fuser back into the printer. Plug it back in and turn the printer on. If this doesn't work and you still get the error, the fuser needs to be replaced.
SOURCE: We frequently get fuser errors with HP color Laser
excally it is going to solve your problem.
SOURCE: the hp color laser jet 2840 does not print.
As the message says, you have a problem with the fusing unit. The only way to solve this problem is replacing it. Gerrit Jan
SOURCE: 2840 Hp Color laser jet displaying Scanner error 05
The book says to try the old power off and on. And then replace the scanner assembly and then the formatter.
Personally, I would try the formatter.
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