HP C7769B Service Manual - Page 93

Service Tests and Utilities Prime Tubes This purpose of this Service Utility is to prime the Ink Supply Tubes after they have been replaced (or if a situation arises where you need to force the priming procedure). Prime the tubes as follows: 1 In the Service Utilities submenu, scroll to "Prime tubes" and press Enter. Service utilities Change ink tubes Unlock Carriage Turn Drive Roller Prime tubes EEROM Setup Menu Back Enter 2 Once the utility starts, the printer will display the following message on the front panel. If you want to abort the Prime Tubes utility, press Cancel and you will return to the Service Utility menu. Prime tubes Press ENTER to force tube priming at next power up. CANCEL to abort 3 If you press Enter, the following message will be displayed on the Front Panel. You should switch the Printer ON and OFF in order to start the priming process. Prime tubes Power off/on machine to start tube priming 4 When you power On the Printer, the Printer will initialize and then display the following message. You will need to remove the normal Printheads and replace them with Start-up Printheads. Open window and remove normal printheads to prepare ink system HP DesignJets 500 and 800 Series Printers Service Manual 4-23