-Check all the cables of the APS and make sure
they are correctly connected and are NOT damaged.
-Check all the tubes of the APS and Tubes System and make sure they
are correctly connected and are NOT pinched or damaged.
-Check that the Air Tube from the APS is correctly connected to
the Tubes System.
-Replace ONE Ink Cartridge at a time, checking if the System Error
Code disappears.
-Faulty APS. Replace the APS (See Air
Pressurization System (APS)).
WARNING: Only replace one
component at a time and check if the error has gone before replacing
another component. Using this procedure you will be able to determine
exactly which component failed.