Printronix L5535 Operator's Manual page 61

CAUTION
Failure to perform Step 5 will damage the photoreceptor drum.
5. Rotate the developing unit lever fully clockwise so that it is
pointing straight up (to separate the developing unit from the
photoreceptor drum).
Legend:
1)
6. Remove the developing unit by holding the lever in one hand
and pulling the developing unit partially out of the printer.
Legend:
1)
Replacing The Photoreceptor Drum
Lever
Hanger
1
1
61