The power push buttons on the iCub 2.5 backpack and on the iCub3 back have different meaning depending on their colors. They have LEDs that can be steady or blinking.
LED
Status
Description
Problem
Action/Note
OFF
Power supply / battery off
?
- check the power supply connection / check the battery charge - switch on power supply / charge the battery
STEADY RED
Power ready
No
push buttons to switch on CPU or motors
BLINKING RED
Power ready
Yes
- overcurrent occurred - press and hold few seconds to try again and if overcurrent persists contact technical support
STEADY GREEN
Power on
No
correct operation
BLINKING GREEN
Power on transient
No
start-up phase, max 20s delay to steady state
iCub 2.5
iCub 3
On iCub3 and on R1 there is also a display that shows the voltage and current present, even the red/green icon with the same meaning as the push button LEDs (R1 doesn't have the colored buttons).
