The blue jumper connector seen next to the speaker connector sets how the eyes are controlled, if the jumper is on the middle pin and the pin towards the outside of the board then Alex's eyes are both controlled together. With the power connected press the 'Next' key
until the LEDs 'S' and '1' are lit, pressing the 'Play' key will light both of Alex's eyes.
Turn off the power and move the jumper to connect the middle pin and pin by the case. Reconnect the power and now set the channel by pressing the 'Play' key again until LEDs 'S' and '1' are lit, now pressing the 'Play' key will light the eye LED connected to 'E1'. Press 'Next' so that the LEDs 'S' and '2' are lit and now pressing the 'Play' key will light the LED connected to 'E2'.
Moving the jumper whilst the power is on will have no effect on the operation of the LEDs because the setting is read only immediately after power is switched on.