Checks / troubleshooting:
Is media loaded outside printing range
(not placed in center or width is smaller
than minimum width)?
Is Paper edge sensor securely installed?
Is Platen non-reflective tape damaged?
Are there taint or any foreign substances
on surface of Platen and Paper edge
sensor?
Is cable of Paper edge sensor placed on
Head securely connected?
Is cable of Paper rear sensor placed
under Paper guide R securely
connected?
Check sensitivity of sensor in “Sen :
EdgeAD” in self-diagnosis function.
Does media in use have low reflectance?
Is CR_FFC obliquely inserted?
CR_FFC may be damaged.
CR board may be damaged.
MAIN board may be damaged.

Recommended actions:
Instruct user how to load media.