Keep Focus Len & Reflector Mirror clean

Turn off laser machine,clean focus lens&reflect mirror at the end of each working day.No.1 and No.2 reflector mirror do not need to be removed when cleaning, simply dipped in anhydrous ethanol cotton or cotton balls,carefully along the center of the lens to the edge of the rotary wipe. No. 3 reflector mirror and focusing lens need to be removed from the…