Samsung LNT4669F Training Manual page 96

V. Trouble Shooting
۞ How to check FRC board
1. Check the LED lamp for source button on front at first
If this LED blank frequently then FRC board is broken
(communication problem via Main Board)
In This case change the New FRC board
2. Check internal Pattern both of FRC and FBE2 in the case of some
picture noise
FRC : Factory mode (mute 1-8-2 power on)->FRC Option
->R_PRE_SEL-> press right button of Remote controller
FBE2: Factory mode (mute 1-8-2 power on)->FBE2
->Pattern sel-> press right button of Remote controller
case1) FBE2 ok, FRC NG: change the FRC Board
case2) FBE2 NG, FRC NG: change the Main Board