Acrosser AR-B5630 - Manual (Page 22)

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3.30 RS422/RS485 CONNECTOR (J9)
3.31 PANEL POWER SELECTOR (J1)
3.32 LVDS POWER (LCDPW1)
SET SIGNAL
1 TX+
2 TX-
3 RX+
4 RX-
SET SIGNAL
1-2 3.3V
2-3 5V(Default)
PIN SIGNAL PIN SIGNAL
1 +12V 2 +12V
3 GND 4 BKLTEN
5 GND 6 BKLTCTL