-Check the APS for any signs of Ink. Also inspect
ALL Ink Cartridges for any signs of leaking (the bottom valve of
the Ink Cartridge will contain ink).
-If there is ink leakage, replace ALL Ink Cartridges, the APS
(See Air Pressurization
System (APS)) and the Tubes System (See Ink
Tubes System).
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.