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HP LaserJet Multifunction Printers - Solve Scan and Copy Quality Issues

Issue:
Output from Scanning or Copying from an HP LaserJet MFP results in unwanted defects on the output, such as: smears, smudges, streaks, vertical lines, horizontal lines, and skewed output.
Scan defects may be visible when viewing the scanned image on the PC.
The information in this document is applicable to the following products:
  • HP LaserJet M3027/3035 Multifunction Printer Series
  • HP LaserJet Enterprise M4555 MFP Series
  • HP LaserJet M5025/5035 Multifunction Printer Series
  • HP LaserJet M9040/9050 Multifunction Printer Series
  • HP Color LaserJet CM3530 Multifunction Printer Series
  • HP Color LaserJet Enterprise CM4540 MFP Series
  • HP LaserJet 4345 Multifunction Printer Series
  • HP LaserJet M4345 Multifunction Printer Series
  • HP Color LaserJet 4730 Multifunction Printer Series
  • HP Color LaserJet CM4730 Multifunction Printer Series
Solution
  1. Print an internal page from the MFP such as a Configuration page.
    Does the print defect occur on the internally printed page?
    If Yes, see directly below. If No, proceed to step 2.
    1. Print defect does occur from internally printed page – the print defect is not specific to the Scanner Assembly. Search hp.com for a printer specific document on solving Print Quality Issues. These issues may be toner cartridge related.
  2. Determine whether the print defect is specific to using the automatic document feeder (ADF) or placing media directly on the flatbed scanner glass:
    1. Make a copy from the ADF and mark it “ADF.” Make a copy from the flatbed scanner glass and mark it “flatbed.”
      1. If the print defect is only visible on the copy marked “ADF,” proceed to steps 3 and 5.
      2. If the print defect is only visible on the copy marked “flatbed,” proceed to steps 4 and 6.
      3. If print defects are visible on both copies, follow instructions in all steps.
  3. Something in the ADF scan/copy path is causing the print defect. For skewed or crooked images on copies or scans, check these items:
    1. Paper guides on ADF not properly adjusted for paper size.
    2. ADF pick-up rollers dirty or not seated correctly. Clean the rollers. Reseat the rollers. Replace if necessary (see Table in step 5 for HP part numbers).
      For smears, smudges, streaks, and lines clean the ‘ADF glass’ or ‘Mylar strip.’
      Your MFP uses one of two technologies to scan from the ADF. Use the examples below to identify which technology your MFP uses and follow the procedure in that example only.
      • Example 1 - MFP with an ‘ADF glass’ – Use this procedure if your model has the ‘ADF glass’ (M3027/3035, M5025/5035, M9040/9050, M4555, CM3530, CM4540)
        Figure : MFP with an ADF glass
          note:
        The M9040/9050 uses two ADF glasses. One like pictured above and another on the underside of the scanner lid (not pictured). Follow the cleaning procedure for both ADF glasses.
        Cleaning the ADF Glass:
        Clean the glass using a soft cloth moistened with water, nonabrasive glass cleaner, or lens cleaner. Dry the glass with a soft dry cloth to prevent spotting.
        Additional trouble shooting steps can be seen in this HP video: http://www.youtube.com/watch?v=CGn7FJvH8sE
          warning:
        Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon tetrachloride on any part of the product; these can damage the product. Do not place liquids directly on the glass; they might seep and cause damage.
      • Example 2 - MFP with a ‘Mylar strip’ – Use this procedure if your model has the ‘Mylar strip’ (4345, M4345, 4730, CM4730)
        Figure : MFP with a Mylar strip
        The Mylar strip is a clear transparency like film on the bottom of the ADF.
        Printers that have a Mylar strip will not have an ADF glass as seen in Example 1.
          Figure : Typical method of accessing the Mylar strip for cleaning
        1. Depress tabs at both ends to lower the Mylar strip holder
        2. Clear Mylar strip is hard to see but visible in this picture
        Cleaning the Mylar Strip:
        Remove the Mylar strip. Clean both sides gently with a soft, lint-free cloth slightly moistened with water only. If cleaning does not work, replace the Mylar (see table in step 5 for HP part numbers). (Units are typically shipped with several replacement Mylar strips.)
      If the issue persists from the ADF after cleaning the ADF glass or Mylar strip, in rare occurrences, a staple or other small object may be lodged in the ADF paper path which can damage the source document causing a defect on the copied output or scanned file. Open the cover on top of the scanner lid. Slide a business card (or similar) in and out of the paper input slot along its entire length. See below pictures. This should clear any objects in the path.
      Figure : Clearing entire width of paper path (1)
      Figure : Clearing entire width of paper path (2)
  4. Something on the flatbed glass is causing the copy defect. Over time, specks of debris might collect on the flatbed glass and/or white plastic backing, which can affect copy quality.
    Figure : Flatbed glass
    Figure : White plastic backing
    Clean the glass and white plastic backing using a soft cloth moistened with water, nonabrasive glass cleaner, or lens cleaner. Dry the glass and white plastic backing with a soft dry cloth to prevent spotting.
      warning:
    Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon tetrachloride on any part of the product; these can damage the product. Do not place liquids directly on the glass; they might seep and cause damage.
  5. If thorough cleaning does not resolve the copy/scan defect from the ADF, in rare cases, it is possible that rollers and/or the separation pad in the ADF’s pick-up assembly can damage the original as it’s pulled through causing visible defects on either the printed copy or the scanned image. An ‘ADF Maintenance Kit’ that replaces these parts may be available for your model:
    ADF Maintenance Kit (unless otherwise noted)
    HP Printer Model
    HP Part Number
    Customer Self Replaceable?
    LaserJet M3027/3035 MFP
    CB414-67918 (ADF Feed Roller Assembly)
    Yes
    LaserJet M4555 MFP
    CE248-67901
    Yes
    LaserJet M5025/5035 MFP
    Q7842-67902
    Yes
    LaserJet M9040/9050 MFP
    Contact HP Support
    No
    Color LaserJet CM3530 MFP
    CC519-67909 (ADF Roller Assembly)
    Yes
    Color LaserJet CM4540 MFP
    CE248-67901
    Yes
    LaserJet 4345 MFP, LaserJet M4345 MFP, Color LaserJet 4730 & Color LaserJet CM4730 MFP
    Q5997A (ADF Maintenance Kit, includes 3 Mylar strips)
    Yes
    Q6496A (Mylar strips only, Quantity = 3)
    Yes
  6. If thorough cleaning does not resolve the copy/scan defect from the flatbed glass your Scanner Assembly may require service. Contact HP Support.

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