2Four solid color bars and lines on the test page should appear as shown below. (The intensity of the colors will vary depending on the type of paper used.)
If any color bar has streaks, print cartridge nozzles might be clogged, and the corresponding cartridge needs to be cleared.
Streaks appear in bars due to clogged cartridge nozzles.
Gaps also appear in lines.
If streaks appear in the same area of all four bars, faulty print cartridge circuitry might exist in just one print cartridge. Printing a self test page with one print cartridge at a time can isolate the bad print cartridge (which should then be replaced).
HP Color Copier 210/210LX User’s Guide