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HP Officejet Pro 8600 Plus e-All-in-One Printer - N911g support

Vertical Bands, Lines, or Streaks in Copies, Faxes, or Scans

  • PrintPrint

When you copy, fax, or scan an original, the resulting output contains vertical bands, lines, or streaks in one or more colors.
When you print the original, the output is normal.
Figure 1: Sample output with vertical white or black lines
Photos with vertical white lines, black lines
Figure 2: Sample output with vertical colored bands or lines
Pages with vertical colored lines, bands
Try the following solutions in the order presented to resolve the issue. When one of the solutions resolves the issue, there is no need to continue troubleshooting.

Solution one: Make sure that the scanner lid is closed before turning on the printer

Turning on the printer when the scanner lid is open might cause poor scan quality, like vertical streaks and lines. Before turning on the printer, remove paper and other items from the scanner glass, and then close the scanner lid. This allows the scanner to properly start and calibrate.
  • If these steps resolved the issue, you do not need to continue troubleshooting.
  • If the issue persists, continue to the next solution.

Solution two: Reset the printer

Static interference or loose power connections can result in bands or lines in the copy, fax, or scan output. To resolve this issue, check the printer connections and then reset the printer.
Important: When you perform this step, close the scanner lid for a proper scan calibration.
  1. Lift the scanner lid, and then remove any paper from the scanner glass.
    Figure 3: Lift the scanner lid
    Image: Lift the scanner lid.
  2. Close the scanner lid.
  3. Remove any paper from the automatic document feeder (ADF) tray.
    Figure 4: The automatic document feeder (ADF)
    Image: The automatic document feeder (ADF).
  4. Press the Power button to turn on the printer.
    NOTE:The printer might go through a warm-up period. The printer lights might flash, and the carriage might move. Wait until the warm-up sequence finishes and your printer is quiet before you proceed.
  5. With the printer turned on and the home screen displayed on the printer control panel, disconnect the power cord from the rear of the printer.
  6. Unplug the power cord from the wall outlet.
  7. Wait at least 15 seconds.
  8. Plug the power cord back into the wall outlet.
    NOTE:HP recommends that you connect the printer power cord directly to the wall outlet.
  9. Reconnect the power cord to the rear of the printer.
  10. If the printer does not automatically turn on, press the Power button to turn it on.
    NOTE:The printer might go through a warm-up period. The printer lights might flash, and the carriage might move. Wait until the warm-up sequence finishes and your printer is quiet before you proceed.
  11. Try to copy, fax, or scan again.
  • If these steps resolved the issue, you do not need to continue troubleshooting.
  • If the issue persists, continue to the next solution.

Solution three: Clean the ADF scanner glass strip, the white ADF plastic strip, the scanner lid, and the scanner glass

If any part of the scanner glass or scanner lid has fingerprints, smudges, lint, dust, or other debris, this can slow performance and affect copy and scan quality. To resolve this issue, clean the ADF scanner glass strip, the white plastic ADF strip on the underside of the scanner lid, the underside of the scanner lid, and the scanner glass.

Step one: Gather the following materials

Gather the following materials to clean the scanner.
  • Several clean, soft, lint-free cloths
  • Mild glass cleaner
  • Flashlight
CAUTION:Use only glass cleaner to clean the scanner glass. Do not use cleaners that contain abrasives, acetone, benzene, or carbon tetrachloride. These substances can damage the printer. Avoid isopropyl alcohol (rubbing alcohol) because it can leave streaks on the glass.

Step two: Clean the ADF scanner glass strip and the white plastic ADF strip on the underside of the scanner lid

  1. Press the Power button to turn off the printer.
  2. Disconnect the power cord from the rear of the printer.
  3. Lift the scanner lid.
    Figure 5: Lift the scanner lid
    Image: Lift the scanner lid.
  4. Place the printed page with streaks or lines next to the ADF scanner glass strip to help identify the area or areas on the glass that created the streaks or lines.
    NOTE:If needed, use a flashlight to see any debris on the ADF scanner glass strip that created the streaks or lines.
    Figure 6: Locate debris on the ADF scanner glass strip
    Image: Locate debris on  the ADF scanner glass strip.
  5. Spray a clean, soft, lint-free cloth with mild glass cleaner.
    CAUTION:To protect the scanner, do not spray the glass cleaner directly on the glass.
  6. Use the lint-free cloth to clean the area of the ADF scanner glass strip that caused the streaks or lines.
    Figure 7: Clean the ADF scanner glass strip
    Image: Clean the ADF scanner glass strip.
  7. Use the lint-free cloth to clean the white plastic ADF strip on the underside of the scanner lid.
    Figure 8: Clean the ADF strip on the underside of the scanner lid
    Image: Clean the ADF strip on the underside of the scanner lid.
  8. Dry the ADF scanner glass strip and the underside of the scanner lid thoroughly with a clean, dry cloth or chamois to prevent spotting.
    NOTE:Do not use paper-based wipes or tissues that can leave fiber residue.
  9. Close the scanner lid.
  10. Reconnect the power cord to the rear of the printer.
  11. If the printer does not automatically turn on, press the Power button to turn it on.
    NOTE:The printer might go through a warm-up period. The printer lights might flash, and the carriage might move. Wait until the warm-up sequence finishes and your printer is quiet before you proceed.
  12. Try to copy, fax, or scan again.
  • If these steps resolved the issue, there is no need to continue troubleshooting.
  • If the issue persists, see the next step.

Step three: Clean the underside of the scanner lid and the scanner glass

  1. Press the Power button to turn off the printer.
  2. Disconnect the power cord from the rear of the printer.
  3. Lift the scanner lid.
    Figure 9: Lift the scanner lid
    Image: Lift the scanner lid.
  4. Place the printed page with streaks or lines next to the scanner glass to help identify the area or areas on the glass that created the streaks or lines.
    NOTE:If needed, use a flashlight to see any debris on the scanner glass that created the streaks or lines.
    Figure 10: Locate debris on the scanner glass
    Image: Locate debris on the scanner glass.
  5. Spray a clean, soft, lint-free cloth with mild glass cleaner.
    CAUTION:To protect the scanner, do not spray the glass cleaner directly on the glass.
  6. Use the lint-free cloth to clean the area of the scanner glass that caused the streaks or lines.
    Figure 11: Clean the scanner glass
    Image: Clean the scanner glass.
  7. Use the lint-free cloth to clean the underside of the scanner lid.
    Figure 12: Clean the underside of the scanner lid
    Image: Clean the underside of the scanner lid.
  8. Dry the scanner glass and the underside of the scanner lid thoroughly with a clean, dry cloth or chamois to prevent spotting.
    NOTE:Do not use paper-based wipes or tissues that can leave fiber residue.
  9. Close the scanner lid.
  10. Reconnect the power cord to the rear of the printer.
  11. If the printer does not automatically turn on, press the Power button to turn it on.
    NOTE:The printer might go through a warm-up period. The printer lights might flash, and the carriage might move. Wait until the warm-up sequence finishes and your printer is quiet before you proceed.
  12. Try to copy, fax, or scan again.
  • If these steps resolved the issue, you do not need to continue troubleshooting.
  • If the issue persists, continue to the next solution.

Solution four: Clean the automatic document feeder (ADF)

Follow these steps to clean the various parts of the ADF, and then make blank copies to check if the issue is resolved.

Step one: Gather the following materials

Gather the following materials to clean the various parts of the ADF.
  • Several clean, lint-free cloths, or any cloth that does not come apart or leave fibers
  • Distilled, filtered, or bottled water (tap water might damage the printer)

Step two: Clean the pick rollers and the separator pad

Follow these steps to clean the ADF pick rollers and the separator pad.
  1. Remove any documents from the ADF tray.
  2. Press the Power button to turn off the printer.
  3. Disconnect the power cord from the rear of the printer.
  4. Lift the cover of the ADF until it stops.
    Figure 13: Lift the ADF cover
    Image: Lift the ADF cover.
  5. Locate the pick rollers and the separator pad.
    Figure 14: Locations of the pick rollers and the separator pad
    Image: Locations of the pick rollers and separator pad.
    1 - The ADF cover
    2 - The pick rollers
    3 - The separator pad
  6. Lightly dampen a clean lint-free cloth with distilled or bottled water, and then squeeze any excess liquid from the cloth.
  7. Use the damp cloth to remove residue from the separator pad. The separator pad on your printer might look like one in the following images.
    Figure 15: The separator pad
    Image: Photograph of the separator pad.
    Figure 16: The separator pad
    Image: Photograph of the separator pad.
  8. Use the damp cloth to remove residue from the pick rollers. The pick rollers on your printer might look like those in one of the following images.
    Figure 17: The pick rollers
    Image: Photograph of the pick rollers.
    Figure 18: The pick rollers
    Image: Photograph of the pick rollers.
  9. Depending on your printer model, locate the white roller and the gray rubber pad.
    Figure 19: The white roller and gray rubber pad
    Image: Photogragh of the white roller and gray rubber pad.
  10. Use the damp cloth to remove any residue from the white roller and the gray rubber pad.
  11. Dry the pick rollers, the separator pad, the white roller, and the gray rubber pad with a clean, dry, lint-free cloth.
  12. Close the ADF cover.

Step three: Make a blank copy using the ADF

Follow these steps to make a blank copy using the ADF.
  1. Reconnect the power cord to the rear of the printer.
  2. If the printer does not automatically turn on, press the Power button to turn it on.
    NOTE:The printer might go through a warm-up period. The printer lights might flash, and the carriage might move. Wait until the warm-up sequence finishes and your printer is quiet before you proceed.
  3. Lift the scanner lid, and then remove any originals from the scanner glass.
    Figure 20: Lift the scanner lid
    Image: Lift the scanner lid.
  4. Close the scanner lid.
  5. Load unused, plain white paper into the input tray.
  6. Load a blank, white sheet of paper into the ADF tray.
  7. Slide in the paper width guides on the ADF tray until they rest against the edges of the paper.
  8. From the home screen on the printer control panel, touch Copy.
  9. Touch Black or Start Black to start the copy.
    • If the copy is clean, you can stop troubleshooting.
    • If the copy has vertical bands, lines, or streaks, there might be dust inside the printer, poor internal connections, or the printer might be damaged. Continue to the next solution.

Solution five: Service the printer

These steps apply to Asia Pacific.
If you have completed all the preceding steps and are still experiencing a problem, you may need further assistance from HP to remedy your concern.
Please contact HP using one of the options found in Contact HP.
HP Officejet Pro 8600 Plus e-All-in-One Printer - N911g

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