Barco DP2K-12C Service Manual page 132

7. Cold mirror assembly
Image 7-6
7. Place a lock nut (reference 10) and a cap nut (reference 11) at the end of each long screw (reference 1).
Note: While tightening the lock nuts ensure that the distance between the Cold Mirror and frame remains 17.4mm. This position
of the screws correspond with nearly an optimal position of the mirror.
128 R5905043 DP2K-12C/11CX 19/02/2018