Question about Sharp AL-1000 Laser Printer

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I got long white vertical lines on papaer when I make a copy.

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It sounds like the drum may need to be replaced. The streaks may be caused by sections of the drum no longer being able to hold a charge and therefore, toner will not properly stick to the paper in those sections and you'll be left with long white streaks on the paper. This is a usual symptom of a bad drum.

Posted on Jan 13, 2008


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White vertical lines after changing dlp chip and lamp on Mitsubishi WD-65833. good picture in background.

had white dots on mine as well i changed the dlp chip and put it back together and got the white vertical lines i decided to check all connections and make sure the chip was locked in correctly
it was not locked in securely i reassembled and now problem solved picture looks brand new so always check connections before assuming its the dmd board

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Vertical lines on an LCD screen are not a good sign. This usually means that your screen is going bad.

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One day my tv started having white lines in various places, then one day the scrren went white but still has a small line across the top that works fine


The problem is "Vertical Over-drive" and the white lines are vertical retrace lines. What has happened is a component failure between the vertical oscillator and the vertical driver circuit. The component is usually a capacitor that is leaking and allowing voltages to appear where they shouldn't be.problem component is leaking and allowing DC voltages to appear where they don't belong. It's causing the vertical driver transistor to run "flat out" and will ultimately burn out the transistor from internally generated heat.
Hope this help....

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Horzontal white lines cut through print and picture copies. When doing head allignment the horozontal bars all have a white gap, 1 through 7. Epson Stylus CX5400

You don't need to do head alignment, because it is for vertical banding in printout. Vertical banding can be minimized by disabling high speed option without doing head alignment. If your printout have horizontal white lines, do check nozzle and head cleaning, or you can minimize white lines by printing in best quality (photo).

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White lines while sending/copying

Everything seems to indicate a dirty 'corona wire'. This seems to be the most common cause of vertical white lines running the length of a page when copying/sending. Below is a link to the User's guide for your machine with instructions for cleaning the corona and other care when using your fax machine. Best of luck.

May 20, 2009 | Brother IntelliFax-2820 Laser Fax

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Printer leaves white vertical lines on document

I dont know what kind of copier you have but white vertical lines are virtually always caused by a dirty charge corona.There is usually a little plastic handle, blue, green or grey, that cleans the charge corona.pull it out ONCE, push it back in and try another copy.If you have an operators manual, it should have instructions for cleaning the charge corona.Good Luck, O'scope

Mar 27, 2009 | HP Office Equipment & Supplies

1 Answer

Two black vertical lines appear on copy, pdf, and scan results

  1. Unplug the power cord and the phone line from the wall.
  2. Open the control panel.
  3. Pull the roller lever forward, and then lift the white roller out of the All-In-One.
  4. Note: The scan lens is located under the white roller.
  5. Use a clean, lint-free cloth dampened with water to wipe the white roller and the scan lens.
  6. Reinstall the white roller.
  7. Reconnect the power cord and the phone line.
  8. And then try to copy if get the dame line then its the hardware problem in the printer you must need to replace the scanner unit in the printer ..
Good luck..

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