92c57dad_smål__FAQ_s____3M_ESPE_Danmark__Solution
[Problem] The light intensity is too low. [Possible Cause] - [Solution] 
Clean the light guide and the protecting glass in the light guide mounting hole (Please refer to 'Cleaning the Light Guide' in the Instructions For Use).
Ofte stillede spørgsmål (FAQ’s) - 3M ESPE Danmark
Solution