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System status indicators

The head incorporates two LEDs for status indication in various modes:

System status LEDs - labelled

LED statusServo LEDProbe LED
OffNo power (probe LED also off)Probe trigger
GreenServos onProbe calibrated
RedServos offStylus removed (or probe error)
Red flashComms to head failed (probe LED also off)Probe removed from head
Amber'Soft engage' modeProbe turned off
Amber flashAuto-tune in progressProbe not calibrated