Konica Minolta Q-M100 - Manual (Page 78)

When the selected frame has been protected, is shown reversely.
(3B)
4. To protect a selected frame:
With the display of the figure 3A, press the SET button.
The selected frame is protected against erasing and the display returns to
the status of the step 1.
If the MENU button is pressed for the SET button, the display returns to
the status of the step 1 without setting of erasure protection for the se-
lected frame.
(3B)
(4A)