Datamax a-class mark ii Operator's Manual page 31

6. Position the Media Guide lightly against the side of the media.
Media Guide
Head Lift Lever
Locking Post
7. Adjust the Media Sensor over the labels (see Section 3.2).
8. If printing on thermal transfer media, load ribbon (see Section 3.3); otherwise go to Step 9.
9. Lower the Head Lift Lever until it is completely and securely engaged onto the Locking Post.
10. If loading media for the first time or if changing to a different media type or size, press and
hold the FEED Key until at least two labels have been output (see Section 3.4).
11. Adjust the Leveling Cam (see Section 5.3.1).
A-Class 21