Checks / troubleshooting:
1. Are Ink cartridges used dedicated ink
cartridges?
2. Is the message displayed after turning off the
printer and turning it back on?
3. Check if there are ink cartridges in ”Sen.:Ink
NOT ” in the self-diagnosis function to see if
the ink cartridge displayed is the same one
with the error.
4. Check the connection of the connector of I/C
cable.
5. Ink I/C cable may damaged.
6. MAIN board may be malfunction.

Recommended actions:
Instruct the user to use the dedicated ink
cartridges.