Introduction

This guide is for replacing the printhead carriage on your HP Officejet Pro 6835 or 6830. Be sure to remove ink cartridges before attempting replacement. Check out the Troubleshooting Page to ensure replacement is the right option.

Open the main lid as far as it will go.
  • Open the main lid as far as it will go.

  • Use a plastic opening tool to gently pry off the hinge on the right side by pushing it to the left and off the hook.

  • Open the lid further.

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Use a T9 torx screwdriver to remove a total of ten (10) 12mm screws from the main cover by turning the screwdriver counterclockwise. The two screws above the screen assembly are deep so you may need a long screwdriver. The two screws above the screen assembly are deep so you may need a long screwdriver.
  • Use a T9 torx screwdriver to remove a total of ten (10) 12mm screws from the main cover by turning the screwdriver counterclockwise.

  • The two screws above the screen assembly are deep so you may need a long screwdriver.

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Grab the main cover and lift it up slightly.
  • Grab the main cover and lift it up slightly.

  • Do not pull too—there is a cable connecting the cover to the printer.

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Grab the base of the white ribbon cable connecting the cover to the base of the printer and pull it out. Grab the base of the white ribbon cable connecting the cover to the base of the printer and pull it out.
  • Grab the base of the white ribbon cable connecting the cover to the base of the printer and pull it out.

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Using tweezers, pinch the top of the  spring located on the right side of the printhead. Pull the spring up and around the hook of the carriage to remove the spring from the printhead.
  • Using tweezers, pinch the top of the spring located on the right side of the printhead.

  • Pull the spring up and around the hook of the carriage to remove the spring from the printhead.

  • Use the same procedure to remove the left spring.

  • The springs may fly out of the printer once you remove them.

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Pinch the left most white cable located on the back of the printhead with your tweezers. Pull the cable to remove it from the printhead. Continue this process to remove all three white cable from the printhead.
  • Pinch the left most white cable located on the back of the printhead with your tweezers.

  • Pull the cable to remove it from the printhead.

  • Continue this process to remove all three white cable from the printhead.

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Lift the printhead off the printer to expose the last white cable. Pinch the the last cable with the tweezers. Pull the cable to disconnect it from the printhead.
  • Lift the printhead off the printer to expose the last white cable.

  • Pinch the the last cable with the tweezers.

  • Pull the cable to disconnect it from the printhead.

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Using the tweezers, remove the right side of the metal clamp that is holding the metal frame in place by pulling up. With the tweezers, unhook the metal coil side of the clamp and pull up to remove it completely. Repeat these steps on the other side of the printer.
  • Using the tweezers, remove the right side of the metal clamp that is holding the metal frame in place by pulling up.

  • With the tweezers, unhook the metal coil side of the clamp and pull up to remove it completely.

  • Repeat these steps on the other side of the printer.

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On the right side of the printer, remove the screw (6mm T9) holding the carriage belt wheel by turning the screwdriver counterclockwise.
  • On the right side of the printer, remove the screw (6mm T9) holding the carriage belt wheel by turning the screwdriver counterclockwise.

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Using the tweezers, remove the metal clamp directly under the screw that was just removed by pulling up.
  • Using the tweezers, remove the metal clamp directly under the screw that was just removed by pulling up.

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Using one hand, loosen the carriage belt around the wheel by compressing the spring against the wheel. While still compressing the spring, use your other hand to  grab the spring and wheel and pull up to remove them.
  • Using one hand, loosen the carriage belt around the wheel by compressing the spring against the wheel.

  • While still compressing the spring, use your other hand to grab the spring and wheel and pull up to remove them.

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Unwrap the carriage belt from the hook on the other side of the printer using the tweezers by pulling to the left and up.
  • Unwrap the carriage belt from the hook on the other side of the printer using the tweezers by pulling to the left and up.

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Grab the metal rod connected to the carriage. Push the rod to the left and lift up the right end.
  • Grab the metal rod connected to the carriage.

  • Push the rod to the left and lift up the right end.

  • Lift the metal rod completely out of the printer by lifting straight up, and slide the rod out of the carriage by pushing the left end to the right.

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Flip the carriage upside down. Using the metal tweezers, remove the clamp over the carriage belt by first pulling up on the back of the clamp, then on the front.
  • Flip the carriage upside down.

  • Using the metal tweezers, remove the clamp over the carriage belt by first pulling up on the back of the clamp, then on the front.

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Remove the carriage belt by holding the carriage in one hand and pulling the carriage belt up with the other.
  • Remove the carriage belt by holding the carriage in one hand and pulling the carriage belt up with the other.

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Use the tweezers to push the three latches out of the back of the carriage one at a time. The metal bracket will fall off after unhooking the latches, so make sure to hold it in place with one hand. The metal bracket will fall off after unhooking the latches, so make sure to hold it in place with one hand.
  • Use the tweezers to push the three latches out of the back of the carriage one at a time.

  • The metal bracket will fall off after unhooking the latches, so make sure to hold it in place with one hand.

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With "Barcode Label" right-side up, grab the right side of the chip and pull it off the carriage.
  • With "Barcode Label" right-side up, grab the right side of the chip and pull it off the carriage.

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The four (4) connectors should come out easily. If they do not, you can use tweezers to push them out from the top.
  • The four (4) connectors should come out easily. If they do not, you can use tweezers to push them out from the top.

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Turn the carriage on its side with the ends of the cables on the top side. Using the tweezers, remove one side of the black bracket by pushing the side closest to you downwards.
  • Turn the carriage on its side with the ends of the cables on the top side.

  • Using the tweezers, remove one side of the black bracket by pushing the side closest to you downwards.

  • Repeat this process on the far side to remove the bracket completely.

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Hold the ribbon cables with one hand and use the other hand to pull off the plastic bracket. It may be helpful to take the cables out one at a time if you can't fit them all through at once. It may be helpful to take the cables out one at a time if you can't fit them all through at once.
  • Hold the ribbon cables with one hand and use the other hand to pull off the plastic bracket.

  • It may be helpful to take the cables out one at a time if you can't fit them all through at once.

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Pull the cables out of the carrier by gripping the carrier with one hand and pulling all of the cables together with your other hand in the opposite direction. Pull the cables out of the carrier by gripping the carrier with one hand and pulling all of the cables together with your other hand in the opposite direction.
  • Pull the cables out of the carrier by gripping the carrier with one hand and pulling all of the cables together with your other hand in the opposite direction.

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Flip the carrier on the side. Remove the screw (T6 6mm) on the side of the carrier by turning the screwdriver counterclockwise. Lift off the plastic cover by pulling it up off the carrier.
  • Flip the carrier on the side.

  • Remove the screw (T6 6mm) on the side of the carrier by turning the screwdriver counterclockwise.

  • Lift off the plastic cover by pulling it up off the carrier.

  • Remove the black latch by pulling the ribbon cable out of the carrier by pulling straight up.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

Elena Fowler

Membre depuis le 24/01/2018

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Cal Poly, Team S2-G4, Livingston Winter 2018 Membre de l'équipe Cal Poly, Team S2-G4, Livingston Winter 2018

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