HP C7769B Service Manual - Page 19

NOTE NOTE Troubleshooting If you need to reseat the Start-up Printheads, make sure you reinsert them in the same color slot in the Carriage. n The Printer will request you to reseat the Start-up Printheads (or in the case of missing Start-up Printheads you should install them or order new ones) and then retry the priming process (if the priming process fails 3 times because of the same problem, it will display a System Error). In this situation, the problem could be the following: 1 The Start-up Printheads were not installed correctly or they are missing (one or all of them). 2 The Start-up Printheads do not work properly and do not allow air to flow (one or all of them). 3 The Ink Supply Station fails to pressurize the Ink Cartridges. To check this, perform the Ink Supply Station test ⇒ Page 4-6. 4 The Ink Supply Tubes are blocked, preventing the ink from flowing correctly. n If a System Error is displayed, try the following: 1 The Ink Cartridge valve is broken so the Ink Cartridge should be replaced. 2 The Start-up Printhead is not working properly and allows ink to flow outside. 3 The Ink Supply Tube is leaking. The last 2 cases will be more obvious because there will be a lot of ink in the Printer (around 20 cc of ink). Remove the Ink Cartridges and release the Tubes Bracket from the Ink Supply Station and check if there is ink in this area. For more information on this problem, refer to System Error 93:10 on Page 2-19. HP DesignJets 500 and 800 Series Printers Service Manual 1-9