How do I maintain the printer
CAUTION Never switch off the printer without following the correct procedures. Even with the storage liquid installed, never leave the printer off for more than 4 weeks. Leaving your printer off for more than 4 weeks can cause permanent damage that cannot be repaired. In all other cases make sure you observe the appropriate maintenance guidelines.
CAUTION The printer has an internal clock which allows it to automatically wash the printheads and flush some ink through the printheads, which keeps the printheads in good condition. The printer automatically washes the printheads regularly after the last printing process. If the printer is switched off for a long period, this process does not happen. If the ink does not flow through the printheads from time to time, the ink will dry inside the nozzles reaching a point where it is impossible to recover them and the printheads will fail. If the printer must be switched off for a long period of time, the customer must use either the optional HP Ink System Storage or Cleaning Kit to recover or protect the printheads.
Automatic maintenance and cleaning will not be performed if you turn off the printer on the front panel. The printer power switch on the rear of the printer should only be used when the printer is turned off to move it, to connect it to a computer, or to install or maintain printer parts.
Before starting the ink system storage procedure, make sure you have available the HP 780 Ink System Storage Kit and an empty waste ink bottle.
Ink system storage
This procedure allows you to empty the ink system of ink and fills it with storage liquid that will preserve the ink system if you do not intend to use the printer for a period of time (between two weeks and a month).
CAUTION Do not open or close the covers or change the position of levers while the ink system storage process is being performed or the operation may have to be restarted from the beginning. This will result in the waste of the storage liquid. If ink system storage has to be restarted, new storage liquid cartridges will be needed.
1.Clean the ink system (see How do I… Clean ink system).
2.Press the ONLINE key.
3.Press the SHIFT key to display the PH. MAIN menu.
4.Press the 
key to select the PH. MAIN menu and press OK.
5.Scroll to the INK SYSTEM OPT option and press OK.
6.Scroll to the STORE INK SYS option and press OK.
7.Press OK to confirm your selection.
96 | Chapter 6 How do I maintain the printer | ENWW |
