Samsung UN JS9500F Series Service Manual page 44

4. Troubleshooting
Major check points
Video Test
Power TV ON.
1
Verify initial Start Up Screens with Power On.
2
Press Mute 147 Mute to view Test Pattern from the One Connect Box.
3
Press Mute 369 Mute to view Test Pattern from T-CON.
4
Start Up Screens
12
4-4
Mute 147 Mute
3
(One Connect Box)
Mute 369 Mute
4
(T-CON Board)