Question about HP DesignJet 500ps (42 in.) InkJet Printer
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Posted on Jan 02, 2017
The printheads are located in the internals of the printer. To get to them you need to gently lift the control panel up and you'll find this hinges up showing the inside of the printer.
You should then see on the printers LED that you can press and hold the OK button for 5 seconds to change the printheads. Do this until you see the printhead carriage moving out of the parking bay over towards the left.
IMPORTANT: Let the printhead carriage get over to the left and sit for at least 10 seconds before you do anything else as sometimes the printer opts to move the thing after a couple of seconds. Annoying but it can cause damage.. So wait a few.
Once the printhead is all the way over to the left, lift the blue plastic latch/cover from the front and this will reveal the two printheads.
You can now change and/or install your printheads before closing the blue plastic latch/cover and closing the printer lid.
Hope that helps.
Posted on Feb 19, 2009
try this link : I followed the directions and fixed the problem. the instructions that came with the new printhead weren't really complete.
Here's essentially all I did for my fix - Opened the printer top, turned the printer off. Removed the "bad" printhead, cleaned the metal contacts on the printhead and printer with windex. Closed the printer. Turned it on. waited for it to reset. Opened the printer. Turned the printer off again. Installed the printhead. Closed the lid. Plugged the printer in again. When it was ready I accessed the HP toolbox and alligned the printheads and cleaned the printheads. It worked. Here's a link with photos.
Posted on May 01, 2009
You need to go to the hp download site and download the System Maintenance Utility Software. Its free, but you need it before you can clean the print heads. also, for some reason it works best when hooked to the network, not directly to Computer.
Posted on Jun 20, 2009
I have the same problem. I replaced both printhead cartidges. The MC light stopped blinking, but the KY light kept blinking. I thought it was a faulty new KY ink cartridge. So I returned that cartridge and got a new one. Still the same issue. I called hp and they said the print head is bad now and all they focused on was trying to sell me a new printer. UG! I also heard wiping off the printhead with a dry cloth may help. Did you get yours to wokr?
Posted on Feb 05, 2011
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