Star SM-S230I SERIES Hardware Manual page 17

Caution Symbol
This symbol is placed near the thermal head to indicate that it may be hot.
Never touch the thermal head immediately after the printer has been used.
Also, even when the thermal head is not hot, do not touch it, because static
electricity can damage the devices inside the thermal head.
WARNING
1) Do not touch the tear bar.
 There is a tear bar inside the paper outlet slot. Not only should you not put your hand in the
paper outlet slot while printing is in progress, never put your hand into the outlet even when
printing is not in progress.
 The paper cover can be opened when replacing the paper. However, since the tear bar is on
the inside of the paper cover, be careful not to place your face or hands too close to the tear
bar.
2) During and immediately after printing, the area around the thermal head is very hot. Do not
touch it, as you could be burned.
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