A few considerations: -If a printhead has been starved of ink for a long time, it may have burned itself out by printing with air instead of ink. If this is the case, that printhead will not recover with the installation of new seals. -Even if a printhead has been starved for only a short period, if the internal ink diaphragm has deflated too much, it will sometimes not allow ink to re-inflate it, and the printhead will remain permanently starved. -Sometimes the electrical connection between the printhead and the carriage is poor. Make sure to clean off the printhead contacts as well as the contacts on the carriage. If either of those surfaces feels tacky, you've still got cleaning to do. -If the drop detector sensor is obscured by ink overspray, it will not properly detect the ink droplets, and the printer will not complete print system setup even if the printheads are working with perfect quality. The sensor may require cleaning.

Nice to see you again. You are a wonderful person - share your knowledge and experience. I've been in the profession for more than 30 years - but I'm always happy to learn from you. I wish you health, vigor, and long years of a good life. Take care of yourself. (I hope the translator will translate from Russian correctly)

Thanks so much for the video! I just tried this procedure when diagnosing the plotter, and it was unsuccessful. After multiple attempts of troubleshooting and before trying this procedure in the video - all ink cartridges have been changed and are under warranty, and after a while, a new error appeared stating that the maintenance cartridge could only replace 5 new cartridges and remove 2, despite the fact that we have eight. After doing some research, I attempted to trick the system by removing the printheads, disconnecting the plotter, and then plugging it back in to replace the printheads. That did not work, and now it states that maintenance cartridges can only replace 3 new cartridges and to remove 4. Additionally, even though the maintenance cartridge is brand new and replaced, it says that it is full at 82%. The plotter was also down for about a year. Before replacing the printheads and maintenance cartridge we were able to print two maps. Now we cannot print anymore due to those errors. We also have an 86:11 error regarding the axis belt or carriage belt, and there is nothing stuck inside, and I cleaned the belt, too. I also did the cleaning solution. This is an HP DesignJet Z6200 42-inch plotter. Thank you for any help you can give...

I'm currently testing your solution with my designJet. Finger crossed but if it work, you're the best ! Greeting from Switzerland.

Nice video and nice introduction to the ink system/Printhead theme of the HP Txxx and Zxxx Plotters - I ordered the seal kit right after! Keep up the good videos!

Nice to see You again 😊

Hi Bob, im From Brazil ( São Paulo) Just want you to know how I apreciate for your vídeos... I nave 2 HpZ and you helpefull me a lot with some issues... well THANK YOU BOB. Good tô see you are Back 👍👍 keep well Bob!

oh, it's been a long time since you posted your videos, thank you very much for your tutorials, greetings from Chile 😃

Thanks for your video. I ordered the cleaning kit in hopes that it will repair my T1200. I will report back.

Just ordered the kit thank sBob Peter Addison

Hi, I have purchased this kit and completed this process on ink tubes and print heads. I have an error coming up stating to replace Y cartridge. The current ink cartridge is at 45%. I have replaced this with a new cartridge. The error continues and I cannot do anything. Do you have any ideas on my next step.

Hi I have just replaced two of my hp72 printhead as they were saying need changing, I know one had only fired 17mls not sure about other guessing the same but my other has fired over 500mls. Could this heads be ok still and maybe getting a false reading as the printer is old and it had aftermarket heads in it I’m abit sceptical that if the heads were reading right or it was because they were aftermarket heads. That said the one I’m not sure on I think was a genuine HP head but would need to check that. Happy to take any advice, also do heads need to be primed before putting in machine or only when cleaning.

Excellent video. Thank you. I have a problem with my T7100 plotter, ink comes out of the print head hoses. Should I do what you did or something different?

Hi Bob, I used this system, and it worked great for clearing the first port printhead, but the second port would not let me suck up any ink. I could just feel suction as I tried to pull up the plunger. Do I have a clogged ink line? Is the check valve not releasing as I press down?

Good video master

I don't see my DJet 500 42or 510 42 listed here, but on your website it appears to be the same kit for my old machines. Is the kit the same for all of them? My current problem is with my 500, where the yellow printhead became empty, even though there is a new OEM yellow cartridge in the machine. I replaced both the printhead and the ink with new OEM parts, but I'm afraid the issue will recur, do to a clog or due to air ingress. Will this purge kit help to remedy this condition? The machine has no leakage anywhere that I can find, and shows no errors. It just kept running with an empty printhead. By the way, I bought your belt replacement kit, and the quality is phenomenal compared to the OEM belt.

Do these printers break after a few months of no use or what? Ours is contantly whining for random ink carriage replacements, print head replacements etc. Feels like every time we uncover it and boot it up its broken.

Hi heard thr last meaning in video, that you are not shipping over sea? No Europe?

after turning my z2100 for a few days I turned it on today and i have a faulty message saying I need to replace all of my ink cartridges. is there a quik fix?

ciao, io ho un problema con una testina r/b dice che è difettosa, l'ho sostituita ma dice sempre che è difettosa, ho seguito anche il tuo tutorial ma continua a dirmi che è difettosa, quale parte elettrica posso provare a cambiare?

have you figured out how to clear the exclamation point on the black printhead-brand new

greetings from bavaria

I had a faulty black printhead and tried 3 brand new replacement ones. None of them worked and after I reseated and tried them again after 3 times it comes up as a paper jam which there isn't. Any help would be appreciated because I can't just keep buying new printheads that won't work.