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Why don't you enter the card reader in the outdoor advertising machine?

Source:siteClick:1048Time:2015-07-30smallmiddlelarge

Why don't you enter the card reader in the outdoor advertising machine?
1, there may be the reader's signal line or power cable is not connected, please check the connection to ensure the correct connection.
2, it is possible that the reader is the entrance of the magnetic head is too dirty or magnetized, please wash with cleaning card.
3, may read the entrance card knife can not fully open, please check the door at the top of the homing spring knife is too tight. If yes, please use your hand to do the spring.
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