User Manual

Table Of Contents
Maintenance
220
Upper Half of ZD420 Ribbon Cartridge Printers
1. Pull the two (2) Release Arms out to release the Ribbon Drive Transport. See Accessing the Printhead
of the Ribbon Cartridge Printer for more details.
2. Swing the Printhead Actuator Arm up until it touches the printer’s top cover. Hold the Printhead
Actuator Arm in this position for access to the area below the printhead, see the next graphic.
3. Spray the Upper Web (Gap) Array Sensor under the Ribbon Drive Transport and the Ribbon Out
Sensor on the underside of the Printhead Actuator Arm with a can of compressed air. If necessary, use
an alcohol moistened swab to break it up. Use a dry swab to remove any residue that may be left from
the first cleaning.
Ribbon Out Sensor
Upper Web (Gap) Array