LaserJet M775 yellow colour missing

[komecky]

Good day,

I have a issue with LaserJet 7000 colour MFP M775. Yellow colour is missing. I swapped yellow cartridge from same model printer and it did not help. I did full calibration, print quality troubleshooting and performed the formatter reseat procedure. No any changes. I attached printed pages from PQ troubleshooting. What else can I check?

 

[(vinny)]

hi
if you have access to another machine try swapping itb (transfer belt)