Question about HP DeskJet 6540 InkJet Printer
When printing, my printer suddenly started printing black rectagnle shapes on the left side of the paper. I can print anything important because of this.
The black spots mean you either need a new imaging
drum, transfer kit or fuser. You'll have to print some stuff and try to
catch where the black marks are appearing. Try this method (it's called
a Half-self test)
Load 2 -3 sheets of letter paper in tray one (manual feed) and remove paper from the rest of the trays.
From the information menu, request a demo page
The MOMENT the tail end of the paper disappears into the printer, open the right door. Open the front doors and release the levers for the imaging drum and the transfer drum. Carefully remove both pieces and examine your paper.
You should find the paper partway on the transfer belt but not in the fuser. If you see black marks here, start with the imaging drum. Open the shutter that covers the sea green shiny roller and look for marks on the drum (you'll see build up on the edges, that's normal, you should not see any scratches, pockmarks or toner on the center of the drum). If it looks clear, take a look at the transfer drum for marks or cuts on it's surface. (note: the transfer drum can be cleaned off with a dry lint free cloth, do not touch the shiny sea green roller of the image drum)
If everything looks good there, then likely the black marks are coming from the fuser. Let the printer sit, turned off for about half an hour to allow the fuser to cool. You can then remove the fuser and look at the rollers to see if there is any build up or damage there.
If you are not seeing any obvious issues with any of these parts, then start with the imaging drum. If you know that any of these parts have never been changed, then change them as they do have a limit to how many pages and how much time they can be used for.
Posted on Feb 17, 2009
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