TM 5-6675-325-14
d. Remove standard aperture from location in base of trunnion.
e.
Install alinement aperture upside down, as compared with standard
aperture.
Pin hole faces downward.
f. Standard enlarging lens remains in position in lens sleeve.
g.
Reinstall lens sleeve and trunnion assembly into Reader-Printer, and
reinstall viewing screen.
h. Plug in power cord.
i.
Switch reader-printer ON.
j .
Adjust focus wheel until sharply defined spot of light is visible on
viewing screen.
CAUTION
Tape or pencil marks will permanently damage viewing screen. When
attaching secondary mirror adjustment template, tape only to hood.
3-72