HP Designjet 350c HP Designjet 330 and 350C Plotters - Users Guide - Page 116

Maintaining your plotter Replacing cartridges Replacing cartridges Replaceable print cartridges are used in the HP DesignJets 330 and 350C, greatly reducing the user maintenance requirements, as these are the components that suffer the greatest wear and tear. When to replace cartridges Replace cartridges in the following two circumstances. When you are troubleshooting print quality problems. See the section starting on page 9-12. When either poor print quality or the ink-level indicator on the cartridge indicates that the cartridge is out of ink. To check a cartridge's ink level Green = full More than half-empty* 0002 Black = empty * When the ink-level indicator shows approximately half-black and half-green, be sure to have a replacement cartridge available. The ink-level indicator is not an exact gauge of the specific quantity of ink available over the life of the print cartridge. To achieve the best lifetime for your pen cartridges, you should not remove them once they are installed, except to replace them. 7-2