Rain Bird ESP-6LX+ Installation, Programming, And Operation Manual page 42

 Press the “MAN START/ADV” button to begin the RASTER.
The display shows “TEST IO,” and the .AULT Indicator
light flashes once as the RASTER confirms the proper
operation of the controller’s front panel lights.
The RASTER then automatically checks the controller’s
master valve and each station valve (in numerical order).
NOTE: If the front panel ribbon cable is not connected
to the circuit board or the controller is disconnected
from the main power supply, the LCD will display the
message “NO OUT.”
ESP-LX+ & LXi+ Installation, Programming, & Operation Guide
TEST IO
39