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4. MAINTERNANCE & TROUBLESHOOTING
4-1. INSTALLING OR REPLACING PAPER ROLL
CAUTION: make sure that paper rolls meets printer’s specification. Do not use paper rolls that have one end
glued to the core. This causes excessive load on the paper feed.
1: Make sure that the printer is not printing or receiving data, and open the printer cover by pressing the cover
open knob. Unroll several inches of the paper as shown.
2: Insert the paper roll as shown.
3: Pull out several inches of paper and close the printer cover as shown.
Tear off the excess paper on the cutter edge.
4-2. ADJUSTING THE PAPER NEAR END SENSOR
A sensor detects when the paper roll is running out. Due to variation in the width of paper roll cores, it is
difficult to measure the exact length of the paper left on the roll when the detector is triggered. The factory
setting is based on a paper roll core with an outside diameter of 18mm and an inside diameter of 12mm. If you
use a paper roll with different widths, adjust the setting as described below.
1: Open the printer cover and remove the paper roll.
2: Loosen the adjusting screw and move the tab to fit the core of the paper roll.
3: Tighten the adjusting screw.
4: Replace the paper roll and close the printer cover.