ST/SV-3210 and ST/SV-3306 314.4 MaintenanceRoutine maintenance will ensure the optimum performance of the printer.The following table outlines the recommended cleaning intervals, whilethe items listed below will help do the job safely and effectively:• Isopropyl alcohol • Soft-bristle brush• Cotton swabs • Soapy water/mild detergent• A clean, lint-free cloth • Compressed airCAUTIONFor your continued safety and to avoid damage to the unit,always turn ‘Off’ and unplug the printer before servicing.Isopropyl alcohol is a flammable liquid, always take theproper precautions when using this solvent.Recommended Cleaning ScheduleArea Method IntervalPrinthead A cotton swab dampened with isopropyl alcohol,wiped across the printhead until all build-up isremoved. See Section 4.4.1.After eachroll or boxof tickets.PlatenRollerA cotton swab dampened with isopropyl alcoholwiped across the platen roller. Rotate the roller byhand and repeat to clean entire surface. SeeSection 4.4.2.After eachroll or boxof tickets.TOF Sensor A brush or compressed air (and isopropyl alcohol,if necessary) to remove all dust build-up. SeeSection 4.4.3.Monthlyor asneeded.Ticket DetectSensorCompressed air to remove all dust build-up. SeeSection 4.4.4.As needed.Ticket Path A brush or compressed air to remove all build-upalong the paper path.As needed.Interior(ST Modelsonly)A brush or compressed air to remove all build-upin the ticket compartment. See Section 4.4.5.As needed.Exterior A soft cloth dampened with a mild detergent toremove all build-up. See Section 4.4.6.As needed.Cutter(optionalequipment)A brush or compressed air to remove all build-up. As needed.