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HP Deskjet D1520, D1530, D1560, and D1568 Printers - Streaks or Missing Lines in the Patterns or Bars on the Diagnostic Page

Issue
The patterns or bars on the diagnostic page printout are streaked or missing lines.
Figure : Lines missing from a color bar on the diagnostic page
Solution
Follow these steps to resolve the issue.
Step one: Run the automatic utility to clean the print cartridges
Use the following steps to clean the print cartridges with the automatic utility.
  1. Load plain paper in the input tray.
  2. Open HP Solution Center using one of the following methods.
    • Windows Vista: On the Windows taskbar, click the Windows icon (), click All Programs, point to HP, and then click HP Solution Center.
    • Windows XP: On the Windows taskbar, click Start, click All Programs, point to HP, and then click HP Solution Center.
  3. Click Open Toolbox. The Printer Toolbox dialog box opens.
  4. Click the Device Services tab.
  5. Click Clean the Print Cartridge(s).
  6. Follow the on-screen instructions.
  7. Examine the test page that prints.
    • If the print quality of the page is good, the issue is resolved.
    • If the quality is still poor, continue to the next step.
Step two: Clean the electrical contacts
The print cartridge electrical contacts might be clogged with ink and residue. If cleaning the print cartridges using the automatic utility does not resolve the issue, then try cleaning the electrical contacts manually.
Use the following steps to clean the electrical contacts.
  1. Gather the following materials:
    • Distilled water (tap water might contain contaminants that can damage the print cartridge)
    • Cotton swabs or other soft, lint-free material that will not stick to the electrical contacts
    • Clean sheet of paper
  2. Open the product cover.
    The print cartridge carriage moves to the center of the printer.
    Figure : Open the cover
  3. Press down lightly on the end of the print cartridge to release it, and then slide the print cartridge out to remove it. Repeat this step for each print cartridge.
  4. Place the print cartridges on a sheet of paper with the copper strips facing up.
      caution:
    Do not leave the print cartridges out of the product for more than 30 minutes.
  5. Lightly moisten a cotton swab with distilled water and squeeze any excess water from the swab.
  6. Gently wipe the print cartridge copper contacts with the cotton swab.
      Figure : Ink nozzles and copper contacts on the print cartridge
    1. Ink nozzles (do not touch)
    2. Copper contacts
      caution:
    Do not touch the ink nozzles. Doing so results in clogs, ink failure, and bad electrical connections.
  7. Repeat this process until no ink residue or debris appears on the swab.
  8. Lightly moisten another cotton swab with distilled water and squeeze any excess water from the swab.
  9. Use the swab to clean the contacts in the print carriage, inside the product.
    Figure : Carriage contacts
  10. Either let the cartridge and carriage sit for ten minutes to dry, or use a new swab to dry the cleaned areas.
  11. Slide the print cartridge into the product at a slight upward angle until you hear a snap indicating the cartridge is positioned correctly.
    Figure : Insert the print cartridges
  12. Close the cover.
  13. Print another diagnostic page.
    1. Press the Power button () to turn on the product.
    2. Press and hold the Power button.
    3. Raise and lower the product cover four times while holding the Power button.
    4. Release the Power button. The diagnostic page prints.
  • If the print quality of the page is good, then the issue is resolved.
  • If the print quality is poor, continue to the next step.
Step three: Replace the print cartridge
If cleaning the cartridges, both automatically and manually, does not resolved the issue, then the problem cartridge should be replaced.
Use the following steps to replace the print cartridge.
  1. Press the Power button () to turn on the product.
  2. Open the product cover.
    The print cartridge carriage moves to the center of the printer.
  3. Push down on the print cartridge.
  4. Slide the print cartridge out of the print carriage.
      Figure : Remove the existing print cartridge
    1. Press the Power button.
    2. Open the product cover.
    3. Push down on the print cartridge.
    4. Slide the print cartridge out of the print carriage.
  5. Remove the replacement print cartridge from its packaging and carefully remove the plastic tape.
    Hold the print cartridge so that the copper strip is on the bottom and facing toward the printer.
      Figure : Remove the pink plastic tape
    1. Pink protective tape
      caution:
    Do not touch the print cartridge ink nozzles or copper contacts. Touching these parts will result in clogs, ink failure, and bad electrical connections. Do not remove the copper strips. They are required electrical contacts.
    1. Ink nozzles (do not touch)
    2. Copper contacts (do not touch)
  6. Slide the print cartridge firmly into the carriage at a slight upward angle until you feel resistance.
    Figure : Insert the replacement cartridge into the carriage
  7. Push the cartridge into the carriage until it snaps into place.
  8. Close the product cover.
  9. Align the print cartridges.
    1. Make sure plain white paper is loaded in the input tray.
    2. Open HP Solution Center using one of the following methods.
      • Windows Vista: On the Windows taskbar, click the Windows icon (), click All Programs, point to HP, and then click HP Solution Center.
      • Windows XP: On the Windows taskbar, click Start, click All Programs, point to HP, and then click HP Solution Center.
    3. Click Open Toolbox. The Printer Toolbox dialog box opens.
    4. Click Align the Print Cartridges.
    5. Click Align, and then follow the on-screen instructions.
      The HP Deskjet prints a test page, aligns the print cartridges, and calibrates the product.
  10. Examine the test page that prints.
    • If the print quality of the page is good, then the issue is resolved.
    • If the print quality is poor, continue to the next step.
Contacting HP for service in all countries/regions except Asia Pacific.
If you completed all the preceding steps and your product still has an issue, service the product.
Check your product warranty to determine if your product is still under warranty, and then go to Contact HP Support to schedule a repair or replacement.
Repair fees might apply for out-of-warranty products.

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