iFix RT809 Series, Manual, Page: 69 / 72

4.15.3 Operation Step
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Step 1 : Connect the lines well first,make sure that the RX TX lines connect correctly;
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Step 2 : Set the line sequences and bit rate well and save;
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Step 3 : After opening the serial port switch,charge the LCD mainboard (The charging order must
be correct or there will be no printing information).
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Step 4 : Prepare the software interface well and charge the mainboard;