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HP 2000C Professional Series Color Printers - Cleaning the Printhead Electrical Contacts

Issue:
Do the printhead electrical contacts require cleaning?
Solution
Some error messages and print quality problems may result from poor electrical connections between the printer and the printhead. When these problems arise, it is necessary to clean the printhead electrical contacts.
DETAILS: See the sections below for detailed information.
Symptoms that may require cleaning of the printhead contacts
  • All three panel lights flash.
  • Printhead errors such as "Yellow Printhead Missing" or "Replace the Cyan Printhead" when the printhead is properly installed in the printer.
  • Poor print quality (faded print, ink is not filling the text or graphics completely, or the ink is streaking or smearing).
  • Wrong colors printing.
Cleaning the printhead electrical contacts
  1. Make sure the power is on and then open the ink cartridge door.
    Figure : Opening the ink cartridge door
      note:
    The power must be on in order to access the printheads.
  2. Llift and remove the printhead access cover (on the right side of the printer). The attention light will flash while the top cover is open.
    Figure : Removing the printhead access cover
      note:
    When the printhead access cover is lifted, the printhead assembly will move to the left about .25 inch to provide access to the printheads.
  3. Open the printhead latch.
    1. Lift the purple latch, then pull the latch forward and down to release the latch hook from the purple carriage lock.
      Figure : Releasing the latch hook
    2. Push and lift the latch toward the back of the printer so the printheads are completely revealed. The latch should rest on the back of the printer.
      Figure : Pushing and lifting the latch
  4. Unplug the printer power cord from the back of the printer or from the power outlet.
      caution:
    It is very important that the printer be disconnected from its electrical power source before touching the printhead contacts. Electrical shock or severe damage to the printer can occur if the contacts are touched while there is electrical power to the printer. Do not use the Power button to power the printer off.
  5. Each printhead has a tab at the front, which is connected to a handle. Using the tab, raise the handle to position it for use. Using the handle, pull the printhead out of its socket.
    Figure : Pulling the printhead out of its socket
  6. Inspect the printhead contacts and the contacts inside the printhead socket for ink and debris buildup. Clean any visible ink deposits with a clean, soft, lint-free cloth. The red areas in the graphic below indicate the areas of the printhead and printhead socket to clean (the printhead flex circuit and the printer contacts). If necessary, moisten the cloth with one drop of tap water.
    Figure : Contact area of printhead and socket
      caution:
    Using paper or a coarse cloth moistened with anything stronger than tap water can damage the contacts and cause repair work to be necessary. Be careful to use very little moisture.
      caution:
    Do not touch any of the copper-colored areas with fingers. Oil from fingers can damage the printhead.
      caution:
    Clean only the areas shown in red in the graphic. Do not clean the copper-colored nozzle plate on the under side of the printhead. The microscopic nozzles can become damaged or clogged by this type of cleaning.
  7. Replace the printhead. Holding the printhead by the handle, align the arrow on the printhead with the arrow on the printhead socket, and firmly push the printhead all the way into the socket.
    Figure : Replacing the printheads
  8. Repeat steps 5 through 7 for the remaining printheads. When finished, lower the purple printhead latch so it covers the printheads and the edges of the ink cartridges.
    Figure : Lowering the purple printhead latch
  9. Fold back the purple printhead latch until it lies flat. Make sure the hook on the latch is secured inside the purple carriage lock (hold down the back of the latch using fingers while lifting with the thumb).
    Figure : Folding back the purple printhead latch
  10. Reattach the printhead access cover and close the ink cartridge door.
    1. Position the printhead access cover over the printer. Rest the two tabs on the back edge of the cover on either side of the tab on the back of the printer.
      Figure : Reattaching the printhead access cover
    2. Lower the printhead access cover until it snaps into place, then close the ink cartridge door.
      Figure : Lowering the printhead access cover
      caution:
    Reconnect the power cable when finished. The printheads will not be returned to their airtight storage location until power is restored. Failure to restore power can cause the printheads to dry out and become unusable.

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