Question about Canon MultiPASS MP390 All-In-One InkJet Printer

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1" wide shaded line is appearing in center of scans

When I scan, I am getting about a 1" shaded line down the center from top to bottom. The light looks good, so either there is some light effect that started that I can't see or the pickup of the scan is bad. Is there any solution or has the printer met its end-of-life?

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May be the scanner issue go to the authorised service centre do will do the needful

Posted on Mar 05, 2009

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Due to fact that the line is red makes me think the contact image sensor is faulty. If the line was black then i would have said you have something stuck on either of the scanner glasses. Check the glasses anyway for any muck stuck on them. Also do a scan from the adf and a scan from the flatbed. If the line is made from only one then the CIS is ok. If both do the same (a line) then the CIS IS faulty.

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We have a black line down the center of all copies...


If the problem only happens on copies or sent faxes then no it is not your drum. There is something on your scan glass. My guess is you are getting the line on your copies when you run the original through the document feeder. If you get lines through the document feeder but not on copies made off the glass then it is a dirty scan glass. There is a thin glass strip where the document feeder feeds the original. Usually something like white out that did not dry smears off an original and ends up on this thin strip of glass. Scratch it off with your finger nail and use some glass cleaner to resolve the problem. The scan glass is about 1/2 an inch to an inch wide and will be on the same side of the machine that the copier feeds the originals in on

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1 Answer

Black vertical line (1 inch wide) appears while scanning/copying


For this kind of problem you need to call the tech support because the printer is already messed up and it is in need of replacement

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Clean the nozzles, align the print heads, turn it off for about an hour. You may need to do this twice, but it works for me.

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Check to see if the glass part of your scanner is clean. Usually its dirty when you have that problem

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1 Answer

When printing or faxing from the top tray of my HP OfficeJet 6310 all in one I get a line that runs down the entire page on the copy or fax to the recipient. I have tried cleaning the glass and rollers...


The key to solving this problem lies in what you observed. It only happens when you use the document feeder. As you noted, when you place it on the glass, there is no line.

When you use the feed, your machine does not pull the document onto the main glass to scan it with a moving bar. Instead, the bar parks itself under the roller section, and the document gets scanned as it rolls past the stationary bar. A spot or speck that blocks the light bar as the document rolls past manifests itself as a vertical line.

Lift up the left cover and the roller carriage and you will see a narrow pane of glass about 1-1/2" wide. This is what you clean. I cleaned mine twice, unsuccessfully, with a glass wipe. Then I decided to align the streak on my copy with the glass, and saw the faintest speck.You may have to look VERY VERY hard under a bright light, but it will be there. A third, more vigorous and direct scrub and the speck was gone--so was the streak.

If the vertical line appears in both modes (document-fed and manual) then there is something on the light bar, or the bar has a broken scan pixel. If the main glass were dirty, you would not see a line, but random spots, and then only when fed manually. Dirty feed rollers can make lines, but not usually the clean, precise lines that are created by a blocked scan bar.

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Open the document feeder and clean the scanner glass.

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Is there any debris under the printhead nozzle plate?

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There is a small strip of glass on the left side directly under the edge of the scanner, About a half an inch wide. It has something on it.
May be very hard to see, use a strong glass cleaner or some alcohol and a regular piece of paper to clean it with.

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