Right, I put in one cartridge at a time as the ink supply indicated replacement. The ink and power lights flashed but no sounds or action. My memory was that there was more activity associated with this, but maybe that is in error. Should I expect anythinh other than flashing lights for 2.5 minutes?
Not necessarily. I didn't find a pattern, sometimes there is a cleaning cycle after chaging a cartridge, sometimes not.
I did subsequently try printing with paper but the images showed alternating lighter and darker bands, in direction of the roller movement. This seems to be indicative of need for head cleaning
Yes... Try first to print a nozzle check pattern.