After printing a nozzle check pattern, examine it. If the nozzle check has flaws as outlined below, clean the print head.
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Check if there are missing lines in the pattern (A) or horizontal white streaks in the pattern (B).

If there are missing lines in the pattern (A):

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Good
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Bad (lines are missing)
If there are horizontal white streaks in the pattern (B):

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Good
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Bad (horizontal white streaks are present)
If any color in the pattern (A) or the pattern (B) is not printed:
(Example: Magenta pattern is not printed)
If one of the above applies, cleaning the print head is required.
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