Oce CS2436 User Manual page 811

Error Message (CS2436-12)
12. 2. 7.
Error Message > Messages regarding paper >
This paper cannot be used.
Cause
Paper smaller than the printer's
minimum supported size has
been loaded.
Paper has been loaded that is
too small to print the test
pattern for printhead
adjustment or nozzle checking.
Corrective Action
Push the Release Lever back and load
paper of the correct size.
(See "Paper Sizes (6.1.2).")
Push the Release Lever back and load
unused paper of A4 size or larger. More
than one sheet may be required
depending on the adjustment.