KERN 573xxNM Service Manual
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8 Electronics8.1 Explanation and Connection of Main PCBPin 1: Power supply (-)Pin 2: Power supply (+)Pin 3: RS 232 (TXD)Pin 4: RS 232 (RXD)Pin 5: RS 232 (GND)Connection ofkeyboard overlayJTAG2 3 4 51Connectionof LCD-displayLoad cell+IN (+EX)- IN (-EX)Shield+OUT (+SIG)-OUT (-SIG)Connection ofLCD displaySeries resistorfor backlight(min. 50 ohm)Top SideIf required set solder bridgeto switch on the scaleautomatically after plug inthe mains adapter (withoutpressing the ON/OFF key)Resistor forcharging circuitBottom Side10 572-SH-e-0951 |
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