1. Turn the printer off and disconnect the printer from power.
2. Open the media cover.
3. Remove the media.
4. Turn the printhead lift lever counterclockwise to raise the printhead.
5. Pull out the verifier or front sensor knob toward the outside.
6. Pull down the front sensor (on PX940Amodel) or the verifier module (on
PX940V model) toward the front side.
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