4-24
Improvement of print quality
(4) After replacing the main circuit board, is such failure cleared?
(1) In the case that the power is turned on, press the power switch to turn off the power.
(2) With reference to "6-2-4. Replacement of main circuit board", replace the main circuit board with a new one.
(3) Print out a nozzle check pattern to check the result.
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