Checks / troubleshooting:
Are Ink cartridges used dedicated ink
cartridges?
Is message displayed after turning off
printer and turning it back on?
Check if there are ink cartridges in self-
diagnosis function to see if ink cartridge
displayed is same one with error.
Check connection of connector of I/C
cable.
Check connection of JUNC_ID cable.
Check connection of JUNC_FFC.
At connection point of ink tubes, ink
leakage, or bleeding did not occur?
I/C cable may be damaged.
JUNC_ID cable may be damaged.
JUNC_FFC may be damaged.
Ink ID board Assy may be damaged.
MAIN board may be damaged.

Recommended actions:
Instruct user to use dedicated ink
cartridges.