Raymarine C140w - Manual (Page 18)

3.2 Powering the display on/off
Powering the display on
1. Press and hold the POWER button until the Raymarine logo
appears.
2. Press OK to acknowledge the warning window.
Powering the Display Off
1. Press and hold the POWER button until the countdown reaches
zero.
Note: If the POWER button is released before the countdown
reaches zero, the power off is cancelled.
18 C-Series Widescreen user reference