Bio-Rad ChromLab™ Software - Manual (Page 207)

The Detectors
Instrument Guide | 205
6. Loosen the left thumbscrews, alternating one turn on the top left screw then
one turn on the bottom left screw until they are completely loosened.
Tip: You might need to loosen the left two screws with a flathead
screwdriver.
7. Grasp the thumbscrews and pull the LED board straight forward out of the
casing.
WARNING! Use caution when removing the LED board. The LED might
be hot to the touch after the board is removed.