User manual

Xiamen Rongta Technology Co., Ltd.
www.rongtatech.com 15
（2）Use the cotton cloth and dip it in the absolute ethyl alcohol to clean the
surface of print roll.
（3）When the absolute ethyl alcohol is completely volatilized, please close the
top cover.
Notice:
（1）The power supply of printer should be turned off when the routine
maintenance.
（2）Do not use hand or metal to touch the surface of print head and not use
tweezers to scratch the superficies of print head, print roll or sensor.
（3）Do not use oil or acetone to do the maintenance.
（4）When the absolute ethyl alcohol is completed volatilized, then power on the
printer.
11、Fix the Paper Jam
When paper jam happens, turn off the power supply and open the top cover, wait
for the cooling of print head then remove the jammed paper. After that, reload the
paper roll and close the top cover. Use the recommendatory paper or the one which
has the same quality would reduce the risk of paper jam.