How do I replace an ink cartridge on the HP DesignJet T520?

The manual references ink cartridge replacement in Chapter 8 (Handling ink cartridges and printhead), covering how to check ink cartridge status and replace a cartridge. You can check ink cartridge status from the front panel, the HP Utility, or the Embedded Web Server, which all display the status of the ink cartridges, printhead, and paper. The ink cartridges are accessible via the ink cartridge cover located on the front of the printer.