Samsung AM032MNQDCH/AA Service Manual page 356

PCB Diagram and Parts List
Wall Mounted type(A3050, MAX) (cont.)
Sub PCB (cont.)
5-26
1
①
CN1-2WIRES COMM.
#1,#2,#19,#20:COMM. SIGNAL
#3,#18:EXTERNAL CONTROL
#4,#17:COMP CHECK
#5,#16:ERROR CHECK
#6:VCC(DC5V)
#7,#14:GND
#8,#13,#15:DC12V
#9~#12:COMM. SIGNAL
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