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Operation of Each Mechanism
2-5 CL-S6621
(2) Printing section
Part name Description
SA PF Motor This motor feeds media. A thermistor is attached to the side surface of this
motor to detect the motor temperature.
SA, Head Up Switch This switch is a mechanical lever switch to detect the print head position;
up or down.
Transparent Sensor
(Upper sensor)
(SA TRA Sen PCB)
This sensor is a photo sensor to detect the labels stuck on liner or
U-shaped notches on tag. It also detects the media end.
Reflective Sensor
(Bottom sensor)
(SA Ref Sen PCB)
This sensor is a photo sensor to detect the black marks on tag. It also
detects the media end.
SA, Head It consists of a head driver and thermal elements. Thermal elements are
heated to make printing on media. The thermal head incorporates a
thermistor to detect the thermal head temperature.
SA PNE Sensor
(Paper near end
sensor)
This sensor is a photo sensor to detect a near end status of roll paper
installed.