Hitachi PB Series User Manual page 29

Section 2
3. Perform cleaning by pouring the intensifier over the area to be cleaned.
Rinse the orifice plate, charge electrode, deflection electrodes, gutter, and
mounting base with makeup ink to clean them. (Also refer to
head cleaning".)
* With wiping paper, thoroughly wipe the makeup ink away from the parts (mounting
base included) surfaces, and then allow them to dry.
4. With the print head cover removed, press the [Start up] and [Eject ink] keys
in sequence.
The ink jets out of the nozzle. (The status changes from "Stop" to "Starting".)
Perform an operation while the end of the print head is placed in a beaker.
Section 1.1.3, "Print
2.1 Startup 2–5