Question about HP LaserJet 4L Printer

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Lines down both the left side of the printouts.

The printouts have a gray streak down the left side of the paper about 1 1/2 inches wide. Happens on all pages. Have tried shaking the toner. Could the toner cartridge be leaking?

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Could be leaking, probably a bad drum cleaning blade. Not accessable. You must replace the whole unit.

Posted on Oct 14, 2008

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Good day,

this usually occurs when you print large volume of copies of documents that goes beyond the printable area of the paper, some powders stick in the roller of your printer hence making the gray streak.

you can check if the rollers have accumulated some powder, if so, have the rollers cleaned.

i hope this will help.

Posted on Oct 14, 2008

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Perform Print Head Alignment Instructions to perform a Print Head Alignment directly from the machine. If diagrams or ruled lines are misaligned, print head alignment is required. The print head alignment can be performed automatically or manually. If the automatic print head alignment does not work, adjust the print head manually. Automatic Print Head Alignment
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  3. Press the Open button to open the Paper Output Tray. Then open up and set the extension by pressing down the hollow on the front side.

  4. Execute automatic print head alignment.
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      05sj00165_02.jpg

Manual print head alignment
  1. Press <ON/OFF> to turn on the machine.

  2. Load two sheets of Letter-sized plain paper in the auto sheet feeder or cassette.

  3. Ensure that the proper paper source is selected.

  4. Execute manual print head alignment.
    1. Press <Menu> repeatedly to select [MAINTENACE].
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  5. Check the printed patterns and use the left or right arrow to input the number of the pattern in column A that has the least noticeable streaks.

    mp530_setvalue.gif

  6. Press <OK> to move the cursor to column B, and then use the left or right arrow to input the number of the pattern that has the least noticeable streaks.

  7. Repeat the procedure until you finish inputting the pattern number for column P.

    mp500_align_from_unit_1.jpg

  8. When you have finished inputting all pattern numbers, press <OK>.

    Note: For columns A through N select the patterns with the least visible vertical streaks. For columns O and P select the patterns with the fewest visible horizontal streaks.

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    <1> Example of the pattern with the fewest visible vertical streak

    <2> Example of the pattern with the most visible vertical streak

    mp500_alignment_manual_3.jpg

    <1> Example of the pattern with the fewest visible horizontal streak

    <2> Example of the pattern with the most visible horizontal streak

I hope it helps!!!

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