Oki 2500 - Manual (Page 28)

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Maintenance
7. Close the top cover.
To avoid premature failure of the printhead, the
printhead must be stored in the storage box when
not installed in the printer.
8. If you are swapping printheads, place the printhead you
removed in the storage box and firmly latch the cover.
To maintain the stored printhead
at peak performance, remove it
from the storage box once a
month and use it to print a few
demo pages before returning it to
the storage box.
5. Install the new/swapped printhead: align the rectangular
hole in the printhead with the green post (➊) on the printer
carriage, then gently lower the printhead into position.
When installing a new color cartridge, insert the
four color ink cartridges into the printhead before
installing the printhead in the printer.
6. Push the green cartridge lock lever back to secure the
printhead.
➊
!