15. Remove the OMAS Sensor from the printer. Installation NOTE: To simplify the installation of the OMAS an Attachment Screw Retainer has been added to hold the two T-20 attachment screws. This part is delivered attached to the replacement OMAS unit with the two attachment screws. It is also delivered as a separate part with the Center Platen in case the OMAS is completely removed during its replacement. Removal & Installation 1. Verify that the two T-20 attachment screws are correctly positioned in the Attachment Screw Retainer. 2. Position the OMAS under the Printer and connect the large ribbon. 354 Chapter 8 Removal & Installation