1
icon for usb interface and it means USB interface is usable .
②
icon for wireless interface
，
when it shows “
”
，
it means RF is usable.
，
when it shows
,it means blueteeth works.If it show nothing ,it means wireless interface
is useless.
。
Notice
：
blueteeth and RF interface can not be used together .
③
icon for hexadecimal and Black Mark mode ,when it shows
，
it means Black Mark
mode ;if it shows
，
it means hexadecimal and Black Mark mode
④
icon for wrong mode ,when it shows
，
it means the wrong mode and the icon flicker.
⑤
the icon for default printing character font
，
when it shows
，
it means the character font
is 6*12/12*12;when it shows
，
it means 8*16/16*16.when it shows
，
it means
：
7*9.
Notice
：
if you change the language of printing ,icons wont change.
