Samsung UN75ES9000F Service Manual page 100

 Standby A3.3V
on Function
Connector, Pin
3.
 All Pins should
read 3.3V
before
commands.
 Press, at Key 1,
Pin 6. 3.3V to
0.0V DC
Left, Right, Up,

Down at
Key 2, Pin 7.
Check specific
voltages on
chart.
Function Control Troubleshooting
6