Question about HP Officejet 7130 All-In-One InkJet Printer

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7130 Teardown & Repair

Hello FatrCat,

First, let me thank you for the excellent pictures and written instructions for disassembly of the 7130 unit. They made it very easy to disassemble and reassemble the unit.

I took the unit all apart, including disassembly of the entire service station, cleaned all of the service station parts of residual ink, and reassembled the unit completely per your instructions. I did not have a 'dead' motor, so I did nothing with it except remove it so I could wash out the ink residue from the station compartments without getting water into the motor on on its attached circuit board.

I reassembled the printer, but the rat-a-tat-tat noise is still there and the printer reacts as it did before taking it apart. The sound seems to be coming from the lower right side of the printer (the service station area as you look at the front panel). The noise is representative of a plastic gear rotating against another plastic gear that is stuck and the noise is quite loud. I did not see any gear teeth wear when I took all of them out for cleaning. I also now notice a sound (represents a very short squeak) that sounds like an RF signal, likely from either the motor, one of the circuit boards, or some other electronic component. I heard this sound before I took the printer apart, but only since this problem loud noise began a few days ago; I did not hear this sound before this problem started.

My theory is that there is a sensor or circuit board component failure that does not allow a positioning sensor to work properly; either on the long skinney board attached to the service station itself or the rotational sensor attached to the back of the motor, consequently the print head wiping / sealing positioning motor runs through the 'stop' command position, thus causing the gears to clash creating the machine gun noise.

If you have any experiences or thoughts about my theory or what might be the cause and how to correct it, I would appreciate your input.

Please feel free to call me or give me your phone number so I can call you so we can converse about this; a much quicker way to talk through the problem / test solutions than E-mail.

By the way, I am the GUEST or second person with the LOUD NOISE problem you responded to on FIXYA.COM

By the way, how do you sync the carriage to the printers operational sequence?

Thank you in advance for your help

Craig Draves
CraigD2@NetINS.Net
641-210-9695

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FatrCat
  • 9 Answers

SOURCE: Loud Noise

Craig,
My apologies for just now responding to this message; apparently my fixya mails have been getting caught by a filter and trashed without my seeing them.

I can think of a couple strong possibilities for this issue, and you're right; talking it through would be a good idea.

I will get in touch as you requested.
David

Posted on May 12, 2008

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