(1) Raise the upper lens holder support (figure 15) and withdraw the
lens assembly from the front frame.
FIGURE 15. Removing and replacing lens assembly.
(2) Remove the lens cap from the front of the lens.
(3) Inspect the lens and remove all dust with the camel's hair brush.
DO NOT ATTEMPT TO DISASSEMBLE THE LENS ELEMENTS.
(4) If necessary, clean the lens with paper lens tissue and lens
cleaner as follows:
(a) Wad a sheet of paper lens tissue and dampen it with lens cleaner.
(b) Apply the lens cleaner with a gentle circular motion.