HP Designjet 2800/3800cp Service Manual - Page 26

What is the Ink System? For each of the four colors of ink in your printer's ink system, there are three separate components that work together as a system. The components for each ink color are color-coded to help you install them correctly. Ink Cartridge The ink cartridges are a large-capacity ink supply from which the printheads are refilled whenever the ink volume in the printhead drops below a minimum level. Printhead The printhead has a 600 dpi thermal inkjet head for firing ink droplets onto the media and a reservoir which holds enough ink for a large number of prints. The actual number of prints between refills depends on the size and type of images you are printing. Printhead Cleaner The printer uses the printhead cleaner to clean and maintain the printhead to ensure the best possible image quality, and to seal the printhead when it is not in use to prevent it from drying out. How Do I Troubleshoot the Ink System? 1 If the error message IInk system IncompltI appears on the front-panel it means that the ink cartridge valve has been disconnected, so: D If this is the first failure try to REINSTALL the failing Ink System. D If the failure has been very frequent REPLACE the failing Ink System (The valve could be damaged). If this doesn't solve the problem, continue with the following process. 1-14 HP DesignJet CP Series Printers Troubleshooting