Citizen CT-S281 User Manual page 27

Black Mark sensor
Label light receiving sensor
Label light emitting sensor
1 Enter Adjusting Paper Sensor mode.
Open the printer cover, remove paper, and then set the printer power switch
to ON. Then close the printer cover while pressing the FEED button. Then,
ERROR LED starts blinking, POWER LED goes off, and PAPER LED goes on.
2 Set Paper to be adjusted to the Printer.
This printer has three types of built-in paper sensors.
In case of label, set it so that label is positioned on the label light receiving
sensor and label light emitting sensor. In case of Black Mark paper, set it so
that the printable portion (other than black mark) is positioned on the Black
Mark sensor. In this case, closing the Printer cover causes ERROR LED to
blink, POWER LED and PAPER LED go off.
3 Adjust Paper Sensor.
Using a narrow flat or Phillips screwdriver, turn the adjuster clockwise to let
the LED go off. Then slowly turn the adjuster counterclockwise to set the
LED to be lit. Excessively turning the adjuster results in blinking of the LED.
In this case, return the adjuster to let the LED go on.
Turning the adjuster
counterclockwise
4 Perform Paper Measuring operation
When the FEED button is pressed, label is fed and paper measuring is carried.If
the FEED button is presed during the paper measuring, the result will be
printed out as follows, and the printer memory switch will be initialized.
* The measuring result is a reference value
showing a gap between labels
Label Length
Gap Length
< Example of label measuring result >
Sensor adjuster cover
blink
showing a label length
: XXXmm
: XXmm
Black Mark paper
sensor adjuster
Level indicator
LED
Figure 1
Light
showing a black mark pitch
showing a black mark height
Black mark Interval
Black mark Length
< Example of black mark paper measuring result >
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Label paper sensor
adjuster
Turning off
: XXXmm
: XXmm