Samsung Component Placer CP45NEO Series Maintenance Guide4.2.2.2. Y-axis L/M Guide Rail, Ball ScrewInspection Check the L/M Guide Rail and the Ball Screw for discoloration or dust. Check the lubricants on the L/M Guide Rail and the Ball Screw. Insufficientlubricants on the L/M Guide Rail and the Ball Screw could cause unusual noiseduring operation of the machine.Figure 4-3. Y-axis L/M GuideSolution Operate the teaching box to move the head assembly to the front side as far aspossible and click the motor free button.4-8