When you want to use the take-up unit, your printer has to be in the roll-to-roll mode. When you enable the roll-to-roll mode, the printer will not cut between pages. You can also configure the roll-to-roll mode on the user panel.
When the roll-to-roll mode is enabled, each print job is delivered to the [Back output]; even when you set the [Top delivery tray] as output location for your prints.
To calibrate the printer the roll-to-roll mode must be disabled.
When the printer is in roll-to-roll mode, you have to cut the media before you can replace a toner cartridge.