NEC SuperScript 100C User Manual page 12

head towards the rear of the printer to fix it in place.
Check that the position of the print head selection lever, to the left of the
ASF, is compatible with the type of print head you have inserted.
The lever positions are marked on the printer casing in front of the lever:
The lever must NOT be forced and must be moved ONLY when the print head carriage
is in the loading position.
Press the Install Cartridge key on the operator panel. The print head carriage
will move to the print head rest position, at the left hand side of the
printer.
Close the top cover
See Chapter 2 in the User Guide for further details on the handling and care of
the ink jet print head.