HP C7769B Service Manual - Page 52

Ink Supplies Troubleshooting When Should You Replace the Ink Cartridges? When to change the Ink Cartridges is mostly determined by you with guidance from the front panel. In conjunction with the messages displayed in the front panel and the message explanations in this chapter, you will be able to choose for yourself when is the right time to change the Ink Cartridges. The printer will also display the ink level and will tell you when the Ink Cartridge is almost empty. This means you have constantly updated information about the Ink Cartridges. There are 3 circumstances when you need to replace the Ink Cartridges which are explained as follows: n Ink Cartridge Error message. When this message appears, the Ink Cartridge has experienced a problem and should be replaced. If this message appears repetitively, refer to Page 3-20, Troubleshooting Repetitive Ink Cartridge Messages. n Out of Ink message. When this message appears, the Ink Cartridge is out of ink and should be replaced. If this message appears repetitively, refer to Page 3-20, Troubleshooting Repetitive Ink Cartridge Messages. n Expiration message. When this message appears, the Printer is warning you that the Ink Cartridge is close to the expiration date. Once the expiration date has been reached, the Printer will stop working and you will need to install a new Ink Cartridge in order to proceed. If this message appears repetitively, refer to Page 320, Troubleshooting Repetitive Ink Cartridge Messages. 3-6 HP DesignJets 500 and 800 Series Printers Service Manual