Question about HP Officejet Pro L7680 All-In-One Printer

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HP Officejet Pro LP 7880 feeder does not work, how to fix it?

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Step one: Check the paper in the ADF The condition of the paper or the amount of paper loaded in the ADF might prevent the ADF from picking it up and feeding it through the product.

  1. Make sure that no more than 50 sheets of paper are in the ADF input tray.
  2. Make sure the original is not photo paper or carbon paper. These types of originals must be loaded on the scanner glass.
  3. Make sure the original document that is loaded in the ADF meets the following criteria:
    • Free from curls, folds, creases, and tears
    • Does not have staples or clips attached
Step two: Make sure the ADF pick assembly is in good working condition
  1. Remove the document feeder and open the ADF cover.
  2. While lifting the blue-green lever, carefully rotate the pick assembly toward the open ADF cover until it stops.
  3. Examine the pick assembly.
    • Make sure the bottom roller is held firmly in place by the two-catch, which is located to the left and the right of the roller.
    • Make sure the stack stopper, which is located between the top and bottom rollers, fits within the double slots just above the bottom roller. The stack stopper should move freely within the double slots to flow up and down when the whole pick assembly is lifted and lowered into position.
  4. Return the pick assembly to its original position.
  5. When the product is turned on, the top roller will reset to its original position above the separator pad. There will be a gap between the separator pad and the top roller.
  6. If there is no gap between the ADF top roller and the separator pad, press the Power button to turn off the product.
  7. Wait three to five seconds and then press the Power button to turn the product on. The ADF rollers should reset to the correct positions.
  8. Close the ADF cover and replace the document feeder.
Step three: Clean the rollers and separator pad
  1. Remove the document feeder and open the ADF cover.
  2. While lifting the blue-green lever, carefully rotate the pick assembly toward the open ADF cover until it stops.
  3. Lightly dampen a clean, lint-free cloth with distilled water, and then squeeze any excess liquid from it.
  4. Use the damp cloth to wipe any residue off the rollers and the separator pad. If the residue does not come off using distilled water, use isopropyl (rubbing) alcohol on the cloth instead.
  5. Return the pick assembly to its original position.
  6. Close the ADF cover and replace the document feeder.
Step four: Detaching and re-attaching the ADF pick roller assembly If the ADF pick assembly is detached or not connected properly, follow the steps below to resolve the issue. If the ADF pick assembly works well, do not perform these steps.
  1. Press the Power button to turn off the All-in-One.
  2. Remove the document feeder and open the ADF cover.
  3. Press the blue-green ADF-release button to release the ADF rollers from the pick assembly as shown in the figure below (the red arrow is pointing to the ADF release button).
  4. Re-attach the ADF pick rollers by placing the rollers into the roller slot of the ADF pick assembly as shown in the figure below. The red arrows show the gears on the ADF pick assembly aligned on one side. The yellow arrows point to the two-catch notch.
  5. Once the rollers are placed on the two-catch notch, push them in, so that the two-catch clicks into place. The photo below shows a correctly installed ADF pick assembly.
  6. Close the ADF assembly and cover.
  7. Turn the product on and make a copy with the ADF to check that the pick assembly works.

Posted on Jul 18, 2010

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