Pro 7900 and 9900 Field Repair Guide 10/6/10
Ink Draining Procedure Printer Component, Software Item, LCD Display, Printer Button Page 421.
5.1 Turn off the Printer.
5.2 Remove 11 Draining Cartridges.
Note: The Ink Draining procedure uses air pressure to force the Ink out of the Ink Lines through the
Print Head. Because of the nature of the hardware the ink in the Lines is replaced by pressurized
air. Opening the Ink System will result in the escape of the pressurized air, and a small amount of
“ink froth”. Have paper towels ready to capture the ink.