Samsung DV316LEW/XAA Service Manual page 77

10-3 Sub PBA Layout (The Principle Part)
Item Part No.
1 U3
2 IC1~3
3 U2
4 LED & Key
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Description
Display the Course
 Drive the LED & Display
 Supply the Current to the Acting Current
 Rotary Switch (For the Selecting a Course)
 Input the Detail Course
 Display the Resent Course
10-3