34 ST/SV-3210 and ST/SV-3306
4.4.3 TOF Sensor Cleaning
If the TOF Sensor becomes blocked with paper particles, Top of Form
detection can be inconsistent or fail completely. To clean the sensor:
Œ Turn ‘Off’ and unplug the printer.
• ST Models: Raise the access cover; see Section 3.2.
Ž Slide the printhead latch to the unlocked position, raise the Printhead
Assembly (see Section 4.4.1) and remove the ticket stock.
• Using a soft brush or compressed air, remove any debris
accumulated on the TOF Sensor. (If necessary, an isopropyl alcohol
dampened cotton swab can be used to remove build-up.)
• If necessary allow the sensor to dry, then lower the Printhead
Assembly and slide the printhead latch into the locked position.
‘ Plug in and turn ‘On’ the printer.
’ Load ticket stock (see Section 3.2).
“ ST Models: Close the access cover.
