CS193/CS173/CS163 9-15Replacing toner cartridges and staple cartridges and emptying punch scrap box 910 Remove the packing material and securing material.11 Align the + mark of the imaging unit and the , mark of themachine. Insert the imaging unit into the machine.– Make sure that the imaging unit is the same color as thelabel on the imaging unit compartment.– Do not insert the imaging unit into its compartment at anangle.– Make sure that the imaging unit is fully inserted into itscompartment.12 Slowly pull out the handle of the protective sheet for the PCdrum.13 Push the imaging unit until it bottoms.