FSL: UNCAL  FAQ overview
 
Question: Our FSL displays an UNCAL message on the screen.
On the FSP, we used the CAL button and started an internal calibration.
Our FSL does not have such a CAL button.
How can we remove the UNCAL message from the FSL display?
   
Answer: You are right. The FSL does not have a CAL hardkey.
To start the internal self-alignment procedure of the FSL, use the SETUP hardkey and the Alignment => Self Alignment softkey.

Self-alignment will take approximately 10 seconds.
Afterwards UNCAL should disappear from the display.