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9.1.3 SQ load Sensor
The SQ load opto was incorporated in printers built after February
– 2015 (s/n 320833 and higher).
The area shown by the yellow arrow should be blown off with air once a year to prevent paper dust
from building up. (NOTE: The sensor may require more frequent cleaning in dusty environments or
when using inferior ticket stock.). The thermal head also will have a black stick on the bottom that is
positioned above the opto.
Printers build after February-2015 will have a black stick on the print head that is required for the SQ
load opto and MUST not be removed.
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