Led Status Indicators - Yamaha TS-S User Manual

8. LED status indicators
Operation statuses are indicated by 2 types of LEDs located on the front face of the controller.
The following table shows the LED statuses and their meanings.
LED Name
PWR
ERR
5
5-50
Color Status
OFF
Blue Blinking (at 0.5sec intervals)
ON (constant ON)
OFF
Red Blinking (at 0.5sec intervals)
ON (constant ON)
Meaning
Control power shutoff
Servo OFF
Servo ON
Control power shutoff or no active error alarms (normal)
Error alarm active (external cause)
Error alarm active (internal cause)