Working on a T830 that keeps saying that it can not detect the paper either Roll or from the Multi Sheet tray. Have replaced that OOP sensor as pre the tests ran and said that is what needed replaced. Still saying it can not detect any paper. It will roll in the paper or take it from the Multi Sheet tray but keeps saying when you try and copy or print that it can not detect the paper. Anyone else work on these had this problem? Thanks
HP DesignJet T830 - not detecting paper
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Re: HP DesignJet T830 - not detecting paper
It's the line sensor attached to the carriage. Very easy to replace. CQ890-67001
However, you may have ink from the service station fouling the sensor. So I would take the old one out and inspect it. If it's coated with ink, you may want to consider replacing the service station and checking for a ink leak from the printhead.
Kiran -
Re: HP DesignJet T830 - not detecting paper
Kiran nails it. I just replaced the service station on a T730 (same printer minus the scanner) due to the problem you describe above. This one was doing the exact same thing; showing the paper error you detailed. The previous owner had a worn printhead that wasn't printing very well so he kept doing cleaning cycles on it. And then the black begin to leak. It left so much ink on the service station it kept picking up ink and smearing across the paper and fouling the line sensor. Ended up having to just replace the whole service station (and the print head). There's that little brush you can see on the right hand side of the carriage when it's parked that I think is meant to keep the line sensor clean. This one was completely soaked with ink and hardened. Quite the mess. Now it's back up and running and happy. For what it is, it does nice line prints and is fast, compared to others. But the cost of that printhead....wowser! I found one on Ebay from Japan for a lot less, $284 delivered. And Kiran sent me a link for the service station. Around $125 + shipping. It's a pretty easy fix.
EDIT: FYI, it took about 3 weeks to get the printhead. I was a bit wary of buying from overseas since I didn't know if there was a region compatibility issue or not but it worked just fine.Last edited by D Hook; 02-24-2022, 02:06 PM.Comment
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Re: HP DesignJet T830 - not detecting paper
I have a T830 doing this. I have replaced the service station and the line sensor, and an hour later it went back to not loading paper. Is there a calibration I need to do after these replacements? What else could be causing the problem. Thank you for any help you can provide!Comment
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Re: HP DesignJet T830 - not detecting paper
I'd check your work on the line sensor replacement. And there should be a test for the line sensor in the diagnostics menu you can run which will tell you if it's the problem or not. Make sure the encoder strip is clean.
KiranComment
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Re: HP DesignJet T830 - not detecting paper
I'm having the same issues and replaced the OOPS sensor but still am having load paper issues. Where is the line sensor located? I see the sensors on page 224 of the service manual but not sure which one is the line sensor. Update, I found it. Its located on the printhead.Last edited by copiertec; 10-11-2023, 02:15 PM.Comment
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Re: HP DesignJet T830 - not detecting paper
Thank you so much for the helpful info above. When my DJ T830 stopped detecting the paper roll, I found this thread and inspected the print head to discover a massive leak from it. I followed the instructions to remove the right cover to confirm that the leak extended down to the line sensor, brush and all the areas around and below them. I just ordered a new service station and print head on Ebay. I am a little intimidated by the service station replacement, but the manual is pretty detailed. My question: do I need any other replacements parts (line sensor, etc.) and what else should I watch out for in replacing the SS?Comment
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Re: HP DesignJet T830 - not detecting paper
The hardest part of replacing the service station, I find, is the little vacuum tube and the T fitting that snaps into a holder on the service station. Take a real good look at it before taking it apart, and follow the service manual. Also just getting the service station out sometimes is a challenge. Helps to push down on it while pulling it out. Be careful with it because it will be full of fluid ink and is easy to spill.
I've had them with fouled line sensors but I just removed the screw holding it to the carriage and cleaned it without removing/disconnecting it.
KiranComment
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Re: HP DesignJet T830 - not detecting paper
I'm always loathe to disconnect any ribbon cable I don't have to. They damage far too easily. This is my preference too. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Re: HP DesignJet T830 - not detecting paper
The hardest part of replacing the service station, I find, is the little vacuum tube and the T fitting that snaps into a holder on the service station. Take a real good look at it before taking it apart, and follow the service manual. Also just getting the service station out sometimes is a challenge. Helps to push down on it while pulling it out. Be careful with it because it will be full of fluid ink and is easy to spill.
I've had them with fouled line sensors but I just removed the screw holding it to the carriage and cleaned it without removing/disconnecting it.
KiranComment
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Re: HP DesignJet T830 - not detecting paper
Japan?? You're in Boston... why not order it directly from HP?
KiranComment
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Re: HP DesignJet T830 - not detecting paper
The print head is from a Japanese seller on Ebay - it was half the price of buying from HP. The service station was from a US seller and should be here in soon.Comment
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Re: HP DesignJet T830 - not detecting paper
I just installed the new service station and print head and everything is back in working order! The trickiest part of the service station install was disconnecting and reconnecting the tube with the tight clearances around the unit. I cleaned the paper sensor and didn't have to replace it. I couldn't do the PMK2 reset that was recommended - couldn't figure out how to get to that menu. Thanks for all the help!Comment
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