HP Designjet 8000s Installation Manual page 7

a. Install the bottom of the holding bracket into the slot (2) on the end plate.
b. Install one screw (1) into each holding bracket to secure it to the end plate.
6. Turn the take-up reel stop screws (1) anti-clockwise to release the right and left assemblies.
4 Installing the take-up reel ENWW