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  1. How to lubricate the HP Photosmart c4780 printhead track, Outer Shell Disassembly: Schritt 1, Bild 1 von 2 How to lubricate the HP Photosmart c4780 printhead track, Outer Shell Disassembly: Schritt 1, Bild 2 von 2
    • Unplug the device from any energy sources.

    • Lift the top cover of the scanner.

    • Use a plastic opening tool to remove the plastic frame surrounding the glass.

  2. How to lubricate the HP Photosmart c4780 printhead track: Schritt 2, Bild 1 von 1
    • Carefully pull the frame away from the glass.

    • If it doesn't remove easily, use the iFixit Opening Tool again to pry stuck sections.

  3. How to lubricate the HP Photosmart c4780 printhead track: Schritt 3, Bild 1 von 1
    • Use a T10 screwdriver to unscrew the two screws that fasten the frame to the printer hood.

  4. How to lubricate the HP Photosmart c4780 printhead track: Schritt 4, Bild 1 von 2 How to lubricate the HP Photosmart c4780 printhead track: Schritt 4, Bild 2 von 2
    • Put your finger behind the panel with the power button.

    • Then, pull the piece outwards.

  5. How to lubricate the HP Photosmart c4780 printhead track: Schritt 5, Bild 1 von 2 How to lubricate the HP Photosmart c4780 printhead track: Schritt 5, Bild 2 von 2
    • Unscrew the screw inside the power button panel space.

    • Then, unscrew the screw that is across the printer slider.

  6. How to lubricate the HP Photosmart c4780 printhead track: Schritt 6, Bild 1 von 1
    • Pull the white circuit board outwards which is located under the small screen.

    • Unplug the small ribbon cable from the circuit board.

    • Be careful when you unplug the ribbon cable not to use too much force. Using too much force may damage or rip the cable.

    • Unplug the small ribbon cable from the circuit board. Be careful when you unplug the ribbon cable not to use too much force. Using too much force may damage or rip the cable.

  7. How to lubricate the HP Photosmart c4780 printhead track: Schritt 8, Bild 1 von 2 How to lubricate the HP Photosmart c4780 printhead track: Schritt 8, Bild 2 von 2
    • Pull the memory card reader's circuit board out.

    • Detach the white wiring connector from the back of the circuit board.

    • You may need to use a finger nail or a plastic opening tool to detach the white wiring connector from the circuit board.

  8. How to lubricate the HP Photosmart c4780 printhead track: Schritt 9, Bild 1 von 2 How to lubricate the HP Photosmart c4780 printhead track: Schritt 9, Bild 2 von 2
    • Put your finger behind the small screen.

    • Then, pull it up.

    • Do not hesitate to use force to remove the TouchSmart panel.

    • Disconnect the ribbon cable from the small screen.

  9. How to lubricate the HP Photosmart c4780 printhead track: Schritt 10, Bild 1 von 1
    • Pull the printer hood upward.

  10. How to lubricate the HP Photosmart c4780 printhead track, How to lubricate the HP Photosmart c4780 printhead track: Schritt 11, Bild 1 von 2 How to lubricate the HP Photosmart c4780 printhead track, How to lubricate the HP Photosmart c4780 printhead track: Schritt 11, Bild 2 von 2
    • Carefully, apply a small amount of grease to the metallic printhead track.

    • You can either use your bare finger or wear a latex glove when applying the grease.

    • The grease will reduce the friction between the track and the printhead, improving mobility.

Abschluss

To put the printer back together, follow these instructions in reverse order.

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Ein Kommentar

The question is how to clean the Printer Head, unfortunately the site refers you to this page which deals with lubricating the track. It does not address the cleaning question or provide any guidance.

Hugo Hofer - Antwort

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