Samsung PS42S5HX/XEH Service Manual page 88

Circuit Description
13-1-2 Power Button Board
13-1-3 Function Key Board
Function Key. Located on the side of the unit.
13-2
(1) RM01: Remote Control Sensor.
(2) SW001: Power button
(3) OP001: The Illumination sensor that senses the quantity
of light. It senses the illumination and automati
cally adjusts the screen brightness according to
the surrounding brightness when the Power
Saving Mode of the User menu is set to Auto.
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