Question about HP Color LaserJet 2600n Printer

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Colours not lineing up - HP Color LaserJet 2600n Printer

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The problem is caused by dust on the lower mirrors of the laser/scanner assembly. The dust makes the magenta and often cyan to fade close to the side edges of the paper. The callibration process prints patterns of colors just around the sides of the paper path and checks them with optical sensors. If they are not in specifications the callibration is unsuccessfull and your problem comes up. The main reason for the dust to occure is the main fan, located on the bottom, right to the laser/scanner assy. This fan gets the dust from below the printer and trow it in the middle where the all imaging process takes place. The dust and some toner get airborn and reach lower mirrors.
To resolve:
1. Take the pritner apart, starting from the back cover, side covers and the metal frame with the boards at the back. The laser/scanner assembly is behind this metal frame. Remove it and open it.
2. Clean all the mirrors from dust with lint free cloth. You may use isopropanol or glass cleaner.
3. To make it permanent, you may cover all vents of the fan with sticky tape. Don't just disconnect it because the printer will get error "main fan malfunction". To cover them properly, I usually remove the plastic gratings. And, yes, this is absolutely safe for the printer. I'm doing this for years to the printers that come to my service.

Posted on Aug 20, 2010

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