If movement is stiff, clean the stage plate with alcohol pads and apply one drop of three-in-one oil to the plate, wiping away the excess.
Modern BM 900 units have built-in brightness control, safety cut-offs, and sometimes integrated image capture. The service manual includes: haagstreit bm 900 service manual new
: Comprehensive layouts to help technicians identify components and troubleshoot systems. If movement is stiff, clean the stage plate