Grinding Sound During Startup - Barco FS-FL40 MKII Series User Manual

Important notice

2.1 Grinding sound during startup.

About
Note that a grinding sound can be heard at startup from ready-state to power ON every time the power has
been disconnected.
This sound will appear every time the dimming disk needs to be calibrated during start up.
Mechanical sound from the dimming disk can also be heard every time you adjust the LED power below 50%
output.
18 R5913251 /00 FS-FL40 MKII series