TM 5-6675-325-14
(c) The processed viewing image then passes to the secondary mirror and
is directed onto the main viewing mirror.
In home position, the main viewing
mirror is at the correct angle to project the image onto the viewing screen.
(a) In print mode, the main viewing mirror swings forward, allowing the
image to fall onto the printing paper which is in position on the printing easel.
The main optical group remains the same for viewing with the following exception:
3-5