Printer is making a clicking/banging noise when the cartridges move to the right after turning on.

[Vincent2003]

HP Photosmart C4780 

[A_Gayathri]

Hi @Vincent2003,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you are facing an issue with your HP Photosmart C4780 when the cartridges move to the right could indicate a mechanical issue with the carriage mechanism. 

Here's how to troubleshoot this issue:

Step 1: Check for Obstructions

1. Turn off the printer and unplug it.
2. Open the cartridge access door to reveal the ink carriage.
3. Inspect the carriage path for any paper debris, small objects, or obstructions that might block the carriage from moving smoothly.
4. Manually move the carriage to the left or right if possible to check if it gets stuck or hits anything.
5. Remove any obstructions if you find them, and make sure no pieces of paper are caught inside.

Step 2: Check the Cartridges

1. With the printer off, remove the cartridges from the carriage.
2. Reinsert the cartridges properly, ensuring they snap into place securely.
3. Close the access door and turn the printer back on to see if the noise persists.

Step 3: Reset the Printer

1. Turn off the printer and unplug it from the power source.
2. Wait for about 60 seconds.
3. Plug the printer back in and turn it on to check if the noise is resolved.

Step 4: Lubricate the Carriage Bar (Optional)

If the carriage movement seems stiff or noisy, you can use a dry lubricant (such as silicone spray) to lightly lubricate the carriage bar.

1. Turn off the printer and unplug it.
2. Open the cartridge access door, and locate the metal carriage rod on which the cartridges move.
3. Apply a small amount of dry lubricant to the rod, ensuring not to over-apply or let any lubricant touch the ink cartridges.

Step 5: Run a Printer Diagnostic

If the noise persists, it might be helpful to run a self-diagnostic test or a printer reset. You can refer to the printer manual or HP's support page for guidance on performing a diagnostic.
 

Refer to this document: HP Photosmart C4780 All-in-One Printer User manual

I hope this helps. 

Take care and have a good day.

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