BTP-L42II User’s Manual
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23—transition roller
24—right paper guide
25—micro switch of print head 26—power switch
27—power interface
28—USB interface (parallel interface)
29—serial interface
1.4 Introduction of main modules
1) Button (5) and LED (6): indicate the printer status and complete
printing function;
2) Paper roll supporting pole (10) and paper guide (11): support
the paper roll to avoid left and right shaking of paper roll;
3) Paper guide (18, 24):
Avoid that there is left or right shaking of paper in the paper
out path;
The sensor is installed in the left paper guide module (18),
which is used to calibrate, detect and locate the medium.
4) Micro switch of print head (25): used to detect whether the print
head is uplifted or pressed down;
5) Power switch (26): press “O” to power off and press “
－
” to
power on.
