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Portable bluetooth thermal receipt printer power LED goes off a problem?

Becky OCOM 2015-04-09 16:00:03
Portable bluetooth thermal receipt printer power LED goes off a problem?

When switch on the printer after 5-7 mins, the power LED goes off, but the print is coming properly. 
Is it a problem? pls do the following steps: 

Press the feed or power button or start a new printing task to see if light will turn on again? if so, the printer is working normally, there's no problem with it. Because the thermal printer has power saving function, if there's no new printing task, the light will go off.