Streaky HP CP3525n prints less popular than bacon
Our CP3525n has caused no problems for the few years we have had it, but now it has started putting a black streak in a consistent position - see attached example.
I have run several cleaning sheets to no effect. I tried doing a print out with each of the print cartridges out in turn, all with the same results.
I am assuming something needs cleaning or replacing, but does any one have any suggestions how I work out what? Has anyone had a similar issue with a similar printer?