Sensor Failure - Star SM-L304 Series User Manual

12.1.3 Sensor Failure

Phenomenon
Faulty paper
sensor
Does not detect Foreign substance
presence of is attached the
paper paper sensor
Faulty connection
of the paper sensor
connector
Does not detect
Rubber roll is not in
presence of
place
cover open.
Related circuit
problem of sensor
or covered
Cause Check Method
Check whether the ERROR
lamp flickers when paper is
out
Check whether any foreign
substance are adhered to
the paper sensor
Check connection of the
paper sensor connector
Open the cover, pressure
sensor manual
Change sensor and
detecting whether there is
still
Remedy
Replace the Mechanism
Unit
Remove the foreign
substance
Connect the paper sensor
cable to connector
correctly
Change the rubber roll or
corresponding structure
holder
Judgment the sensor or
circuit problem, then
change sensor or repair
motherboard