Question about Sharp MX-2700N Color Copier

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Faint red line across page when making color copies or printing in color from computer

When making color copies, a faint red line appears on the copies. It is 2 1/2 inches from the top of the page and runs all the way across the page. The copies are portrait style. The more copies I make the worse it gets. Once we switch back to black and white copies, it appears very very faintly on the first 1 or 2 B&W copies then goes away. It also is present when I print color copies from my computer.

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Some possibilities are:

1) Dirt on the glass, dirt on the glass strip for the doc feeder, or dust on the mirrors. This would be the case if the line only showed when copying and not printing.

2) Toner dropped onto the charge sawtooth.
This may be possible if the line is intermittent and only showed up for 1 or 2 colors.
Open the front door and remove the waste toner box. To the left of each drum there is a green organ-stop type stem. Pull and reinsert each stem. You will hear a zipping noise. These are your charge scrubbers.
This may be not as likely if the line shows up in the same place on all 4 colors

3) Toner or dust on the lens
This may be possible if the line is intermittent and only showed up for 1 or 2 colors.
In the area where the waste toner box goes, look for a grey stick with a white cushion on the end. This is your lens scrubber. Look in the area under the charge scrubber on each drum cartridge for a gap. Insert the scrubber cushion side down into the gap and run it forward and back to clean the lens.
This may be not as likely if the line shows up in the same place on all 4 colors

4) Transfer belt blade not cleaning
This is best handled by a service tech since the mylar belt is very fragile. The squeegee blade that cleans the transfer belt between copies is missing a spot. The blade needs to be taken off the belt, cleaned and repowdered. Recently, Sharp made changes to the composition and thickness of the mylar in the transfer belts. Overpowdering the blade or belt when it was changed may cause improper cleaning of the belt creating lines across the copies. Often the condition clears up after a couple of days as the gap between the blade and belt is sealed.
This is most likely the cause as the line shows up in the same area for more than 1 color.

5) Transfer belt and/or blade is worn out
If the belt is worn the blade must be replaced but not vice versa.

6) Clogged waste augers in the drum cartridges.
Waste toner may cake up in the drum cartridge and knock loose on the drum.

It may be time for full maintenance on the machine.

Posted on Jul 09, 2009

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Hi, Sound like there is a problem with one of the drum cartridges, my guess would be the magenta one. Your best bet is to replace that one, you could try switching the drum cartridge with one of the others and see if the problem moves with the cartridge.
Hope that helps....
Lbcoaster

Posted on Jun 02, 2009

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You can easily fix this yourself, one of the quickest ways to fix it is to print 10 doublesided blank pages and it will clean the inside of the machine for you and the line will vanish.

For further print quality problems on this machine follow these instructions to troubleshoot.

When troubleshooting image quality problems, it is important to understand the situations in which the problem occurs.

Print a copy of the color test pages to determine whether the problem is in one color or more than one color.
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