Lexmark C91x Service Manual page 103

Message
Insert Staple
Cartridge
210 Staple Jam
The staple cartridge is either missing or installed
incorrectly. Correctly install the staple cartridge. Go to
"Finisher service check" on page 2-71
staple cartridge set sensor.
Open the finisher stapler door, remove the paper from
the accumulator, and remove the staple jam. Go to
"210 Staple jam service check" on page
Solution
Diagnostic information
5055-xxx
to check the
2-86.
2-53