User's Guide

Safety precautions
(1) No current or voltage exceeding the maximum absolute rating shall be
applied to any pin if
More than the maximum absolute rating of current or voltage, current flow
ingesting the device may cause thermal damage.
(2) No output pins can be shorted with the power supply.
(3) The conductive material falls onto the circuit board, causing the pin on
the circuit board to short-circuit, the current over the general assembly
Causes thermal damage.
(4) Make sure that the device is connected using the specified cable.
(5) Incorrect connection may cause a fire.
(6) Do not remove or modify the product.
(7) Making incorrect changes to the product may result in injury, fire or
electric shock.
Precautions for use
(1) Use the required printing paper provided or confirmed by the supplier,
otherwise it may affect the quality of the print
the amount of print head life, and even damage the print head.
(2) The width of the printed paper roll, the minimum diameter of the inner
diameter and the maximum diameter of the outer diameter should meet the
error requirements, and the paper should be
Head bypass from stainless steel, otherwise it may appear that the paper
will do not reliably turn on or walk the paper is not smooth, not straight, etc.
The phenomenon affects the normal operation of the printer.
(3) The signal interface cable shall not be plugged in the live state of the
printer.
(4) If you open the head after printing, do not touch the print head or motor
housing by hand immediately.
To avoid being burned by the high temperature of the metal housing.
(5) The friction between the roller and the thermal paper is very large, when
there is no paper in the print head, should avoid walking paper at this time,
It is not possible to print, otherwise it is easy to damage the thermal film.
6 The print head piece needs to be cleaned regularly (with waterless
alcohol) to ensure the quality of the print and the quality of the print
Life.
(7) If the printer works outdoors to pay attention to regular dust cleaning of
the printer, to avoid transmission
The sensor is unable to report the status of the printer accurately and
effectively due to dust cover.
(8) It is strictly forbidden to block the output of paper by hand: