Just installed a replacement set of your carts full of inks for my ageing ones. The order number was: SO30745900
When doing a nozzle check I get 8 bands printing out: 5 colour and 3 grey/black. I’m assuming all 9 cartridges should be printing test bands, unlike actual printing when one of the black cartridges will not be used.
If all 9 should show, then my new MK matte black cart is not producing any bands at all despite several cleaning cycles and having been taken out and put back in a couple of times.
Unfortunately, I think I might have been guilty of the major sin of letting the old cart sit relatively low on ink for a few weeks prior to the carts being changed. So I’m left with the problem of deciding if I have a faulty cart or a blocked ink channel.
Any suggestions as to the best way to proceed? If it helps, I’ve ordered a spare set of carts and some Piezo flush to use when the printer is idle for weeks on end.