Christopher Jones wrote:
On the nozzle check pattern, the light cyan and light magenta stripes
are completely missing. Have tried everything I can think of: nozzle
cleaning, nozzle deep cleaning, print head alignment, new ink tanks, new
print head, remove and reinstall drivers, but the problem persists.

Is there anything else I can try before consigning this printer to
oblivion?

Sad eh! Sounds like an electronic problem. Have you cleaned the contacts in the
carriage that mate with the contacts on the printhead? With power off the
printer you can try cleaning them with a cotton swab and isopropyl alcohol, or
even a slightly damp cloth followed by a dry lint free cloth. The light Cyan
and light Magenta are produced from the standard Cyan and Magenta ink tanks in
this model and use the standard nozzles in the printhead (I believe), there is
a density adjustment made by the printer when printing light colours. This
means that the failure has to be electronic if cleaning the contacts does not
work. Good luck.
Tony
MS MVP Printing/Imaging