Hi Lenny I had the same issue on mine. I did eventually replace it with a newer phone, but I kept around because I wanted to try to fix it. I recently updated it to the newest iOS and it seems to be working OK. No running white noise anymore or anything. Anyway, give updating it a try and see if that helps. Best of luck!
All of these issues seem like they may be dust and dirt related, so cleaning the machine may help. Dust gets stuck to the print heads and causes ink to drop onto the prints. Except the horizontal lines, that sounds like banding and is often a feed-rate issue. You can fix that by making sure the paper is set in the computer to match what the paper really is. If it's already set to the right type the manual may include a section on troubleshooting banding/print quality issues.
Have you done cleanings and such? I found this on the HP website for that error code-https://support.hp.com/ee-en/document/c01458034. Not the same printer but some of the info should be relevant. I've had a similar issue in another HP, and it was solved by cleaninshould print heads resolved it. Hope that helps.
Hmm. I'd try this : turn the printer off and unplug it from the computer Uninstall the printer drivers etc. Download the drivers (make sure they are the right ones for your computer and printer combo. Tech support for Epson online should be able to tell you if you get stuck. They might be a good bet for this problem regardless.) Reinstall the drivers. Plug the printer in and turn it on. I'm not much of a software person, so if that didn't do it I'd be calling or emailing Epson.
I'm not familiar with your printer, but I work with large format machines. First off, It's important not to force the print carriage (the part that holds the print heads) as this could damage the belt that attaches to the motor or the motor itself. As a first step, you can always turn both the printer and the computer all the way off and then back on. While the printer is off, unplug it and hold the power button for about 10 seconds. Not sure if it matters but I turn on the computer first, then the printer. That way I can make sure there is nothing in the print queue. If that doesn't work, The manuals usually have troubleshooting for this kind of problem in the back section. There is usually something like a maintenance cartridge or other device that is keeping the motor engaged and will keep the print heads from being moved.