Avery Dennison Monarch 9433 Sierra Sport3 Operator's Handbook Manual page 29

4. Clean the printhead with a clean soft cloth
moistened with isopropyl alcohol, a cleaning pen,
or a small brush.
Note: The printhead is sensitive to static electricity,
which can damage the printhead or reduce its
life. Ground yourself by touching a metal
surface before cleaning the printhead.
5. Clean the on-demand sensor with a clean soft
cloth, a cotton swab moistened with isopropyl
alcohol, or a cleaning pen.
Printhead
On-Demand
Sensor
Care & Maintenance 3-3