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Datamax-O'Neil H-Class Operator’s Manual User Manual

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H-Class

H. If removed, reinstall ribbon. Lower and lock the Printhead Assembly. Plug in the

printer and turn ON the Power Switch. Print a Validation Label (see Section 4.3.4)

then compare the contrast levels between the current label and a previously printed
label; if necessary, adjust the DARKNESS setting (see Section 4.2.2) until similar

black levels are produced.