Direct answer
A wrong result requires checking inputs, mode, calibration and output separately; a working control path can still be configured for the wrong state. For inkjet printhead nozzles, first print the built-in nozzle check and identify the exact missing color pattern.
What this covers
- inkjet printhead nozzles with this exact failure state
- Diagnosis across ink supply and vents versus nozzle blockage, air and printhead electronics
- Customer-accessible observation, settings and external components
What it does not cover
- ×A displayed manufacturer error code with a different documented meaning
- ×Live electrical, sealed-system, internal battery-cell or gas repair
- ×A claim that every model exposes identical controls
Capture the exact failure state
ReversibleWrite down the selected mode, input conditions and the exact unexpected output. Expected behavior: deliver complete cyan, magenta, yellow and black patterns without gaps.
Isolate the component boundary
ReversiblePrint the built-in nozzle check and identify the exact missing color pattern. Use a known reference input or manufacturer test and compare the result. Boundary to separate: ink supply and vents versus nozzle blockage, air and printhead electronics.
Correct only the proven cause
ReversibleRun the documented limited cleaning/rest cycle or replace the failed supply. Correct the setting, calibration or component proven by that comparison.
Verify and stop safely
ReversibleRepeat with the reference and a normal real-world case. Stop repeated cleanings that consume ink without improvement or when ink leaks.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check first when inkjet printhead nozzles has this problem?+
Print the built-in nozzle check and identify the exact missing color pattern.
Why not factory-reset immediately?+
The useful boundary is ink supply and vents versus nozzle blockage, air and printhead electronics. A reset can erase state without proving which side failed.
When should I stop troubleshooting?+
stop repeated cleanings that consume ink without improvement or when ink leaks.
Answer for the exact device and software version shown above.