Oce CS2436 User Manual page 853

Error Message (CS2436-12)
12. 6. 6.
Error Message > Messages regarding the maintenance cartridge >
Maintenance cartridge problem.
Cause
An incompatible or used
Maintenance Cartridge has
been installed.
Corrective Action
Install an unused Maintenance Cartridge
specified for use with the printer.
(See "Replacing the Maintenance
Cartridge (10.3.2).")