420B Wifi Printer print sleftest WIFI is NO , how to solve?

420B Wifi Printer print Selftest , but WIFI is NO ,  how to solve?

like below image

Answer : 

  Put the paper in the printer and Turn on the printer power ,    using Mobile  search  WIFI SSID : XP-420B   ,  Choose and connected  ( password : 12345678)


after  printer and mobile  connected  by AP mode , then let the print  Selftest  


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