HP Color LaserJet CM6030CM6040 Multifunction Printer series - Manual (Page 271)

2. Push the upper delivery guide to the right, and remove any jammed paper.
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3. Grasp the blue handle for the stapler carriage and pull it straight out.
4. Grasp the handle of the blue staple cartridge unit and pull it toward you, then swing the staple
cartridge unit into an upright position.
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ENWW Jams 255