Question about Xerox Phaser 8550DP Printer

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Lines on print. There's are three lines on picture print only. Can't see the line on document. It's about 1/4 inch wide and going throught top to bottom.

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Have ou gone into your menus. Into troubleshooting, then image quality.
You will want to run both the eliminate light stripes and eliminate smears procedures. that will purge the print head, blow air through the jets and hopefully resolve the problem. I do believe the 8550 has a Jet Substitutin procedure where you can do a workaround and make other jets make up for the light areas.
here are some directions, Will forward more

  1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
  2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
  3. Press the [Up] or [Down] arrow button to select [Troubleshooting Print Quality Page], and then press the [OK] button.
  4. Evaluate the 'Light Stripes Test' page for missing printhead jets, such as missing Cyan, Magenta, Yellow or Black color bars. The 'Light Stripes Test' page is the last page of the Troubleshooting Print Quality Page that printed.

    WARNING: To avoid injury, do not touch the sharp metal strip attached to the clear rubber wiper blade in the Maintenance Kit.

  5. Use a clean lint-free cloth or a new paper coffee filter to gently clean the maintenance unit's clear rubber wiper blade, use only a wiping motion across the entire length of the wiper blade, and then empty the waste tray. A dirty maintenance kit wiper blade can cause white lines and weak or missing printhead jets.


  6. lines on print. There's are three lines on picture - 8500-wiper-blade-clean.jpg

  7. Repeat step 3 to reprint the Troubleshooting Print Quality Pages. If there are no missing or partially missing color bars then the print quality problem has been resolved. If there are missing or partially missing color bars then the printhead cleaning procedure will need to be performed. Continue with the next section.
To clean the printhead using the basic eliminate light stripes procedure:
  1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
  2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
  3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.
  4. Press the [Up] or [Down] arrow button to select [Basic], and then press the [OK] button. The printer will perform a head cleaning, which will take about five minutes. The printer will then print a cleaning page and a light stripes test page.
  5. Repeat steps 1 - 4 one more time. If there are no weak or missing jets then the print quality problem has been resolved. If there are still weak or missing jets after two basic light stripe cleanings, continue with step 6.

    NOTE: Do not try the Advanced Eliminate Light Stripes Cleaning mode without performing two basic cleanings first.

    To clean the printhead using the advanced eliminate light stripes procedure:

  6. Press the [Up] or [Down] arrow button to select [Advanced], and then press the [OK] button.
  7. Select the missing jet color and number. If necessary, check the light stripes test page to determine the color and jet number of the missing jet.

    NOTE: Only perform the advanced light stripe cleaning once. If weak or missing jets still persist, continue with step 8.


  8. Print the Troubleshooting Print Quality Page. Evaluate the Light Stripes Test page for missing printhead jets, such as missing Cyan, Magenta, Yellow or Black color bars. If necessary, perform the basic eliminate light stripes procedure one more time. If the Advanced Eliminate Light Stripes procedure does not resolve the weak or missing jets, perform the Enable Jet Substitution Mode. See the Related Items below.

Posted on Feb 05, 2010

  • Rick Kasper Feb 05, 2010

    How to enter Jet Sub.



    To enable the Jet Substitution mode:



    1. Press the [Up] or [Down] arrow button on the Control Panel to
      select [Troubleshooting] on the Display Screen, and then press the [OK]
      button.

    2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.

    3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.

    4. If necessary, select [Print Light Stripes Test] to make a Light
      Stripes Test print that shows any weak or missing jet and its jet
      number.

    5. Press the [Up] or [Down] arrow button to select [Jet Substitution Mode], and then press the [OK] button.

    6. Press the [Up] or [Down] arrow button to select the color for the
      weak or missing jet, and then press the [OK] button to select the color.

    7. Press the [Up] or [Down] arrow button to select the number of the
      weak or missing jet (1 to 309), and then press the [OK] button to
      confirm the selection.

      NOTE: If necessary, press the [Up] or [Down] arrow button to select [Save Change and Select Another Jet] to substitute more jets.


    8. Press the [Up] or [Down] arrow button to select [Save Change and Exit] and then press the [OK] button to complete the procedure.



    To disable the Jet Substitution mode:



    1. Press the [Up] or [Down] arrow button on the Control Panel to
      select [Troubleshooting] on the Display Screen, and then press the [OK]
      button.

    2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.

    3. Press the [Up] or [Down] arrow button to select [Eliminate Light Stripes], and then press the [OK] button.

    4. Press the [Up] or [Down] arrow button to select [Jet Substitution Mode], and then press the [OK] button.

    5. Press the [Up] or [Down] arrow button to select [Turn Jet Substitution Mode Off], and then press the [OK] button.


    6. NOTE: Any saved and stored jobs on the printer’s hard
      drive (if the hard drive option is present and enabled by the printer’s
      feature set on a Phaser 8550) will need to be resubmitted to the hard
      drive to print correctly while Jet Substitution is enabled.



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