Compuprint SP40 - Manual (Page 17)

8. Turn the tension knob in the direction of
the arrow to tighten the ribbon.
9. Push down on the green label “PUSH TO
CLOSE” present in the print head assembly
until it clicks into place.
If you do not close the print-head assembly correctly, the printer does not print and you may
damage the printer cover.
10. Close the printer cover.
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