HP Designjet 70/110plus Printer
How do I clean a printhead? (continued)
7. If the printhead contacts are still dirty….
...slightly moisten the cloth with distilled water and continue softly wiping the contacts until they are clean.
8.Place the printhead on a paper towel and leave it to dry for at least five minutes.
9.While the printhead is drying, clean the contacts inside the carriage in the same way.
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