SC-540 printheads dried up

[avalon123]

My printer had not been parked/stoped properly and all printheads dried up.

After a lot of cleaning etc. are all, except BLACK and MAGENTA working OK.

BLACK and MAGENTA did not print at all and are still not printing after I changed the printheads.

What can be wrong?

 

[mark in tx]

The heads are probably still clogged.

You could saturate a coffee filter with cleaning fluid and place it in between the head and capping station for 15-20 minutes, then try a cleaning cycle and test print.
repeat 2-3 times as needed.

If that still does not work, then you should probably get a technician involved.

 

[Fast Time]

Put some cleaning fluid in the capping station heads and let is sit overnight

 

[Robert M]

Print head

Try switching the flat ribbon cable from the right head to the left, see if it fires. If it is electrical, you have a bad cable or a blown fuse. I can sell you either part

 

[stinky12]

There's a great post where a technician cleared up a stubborn clog by siphoning ink from the capping station while the heads were parked (need good seal from head to capping station) then attaching a hose connected to a syringe at the bottom of the capping station where it drains (or gets pumped out) he pulled a good amount of ink through quickly to clear any clogs. I've tried this on a few occasions on my sc500 soljet (converted cj500) with great results, but am not clear if your printer is set-up this way, and if you're able to use suction at the capping station.

 

[Pacific Coast Sign]

You will want to check that your caps are centered on the heads... look at the caps as they go up into position. If the caps are not centered on the heads your issue(s) will continue. Your local dealer can walk you through how to do an Initialization that can center your caps...its an easy thing to do and makes a huge difference...and save frustrations later. Try using a syringe to draw the ink from the cap line as the heads are capped... if it works, great, but if not...check the position.