Kevin is right. Here is a video on the best way to run a nozzle check -
YouTube - Running a Nozzle Check & Head Cleaning - MultiRIP software.
Here is also a link to the playlist for the technical support videos on MultiRIP as well -
YouTube - Broadcast Yourself.
There are two other things that you can try and do:
1) Go into your graphics program and create a box filled with 100% color of the channel that is clogged (i.e. yellow). Then, print that out using the correct side of ink (i.e. MultINK in this case according to your post above) and use one of the transfer graphics settings.
2) Can look at purchasing a 3rd party software program like Printer Jockey (
Printer Jockey) that will allow you to flush a single channel. Then, just flush the channel that is clogged.
If none of the suggestions work above, you should contact your distributor and see what other things they recommend. Hope this helps and gets your printer fixed.
Mark