Shimadzu PDA-7000 - Page 85

5 Maintenance
5-21
9 Apply a small amount of silicone grease to the O-ring and place it on the lens holder.
Note
Be sure that silicone grease does not stick to the condenser lens,
since it is difficult to remove. Be sure your hands are not dirty when
cleaning the lens.
10 Return the lens-mounting frame to its original position using the lens rotating tool.