Lexmark 4059-XXX - Manual (Page 163)

Diagnostic Aids 3-30
4059-XXX
Error Message 250 - Paper Jam - Check MP Feeder
The paper is jammed in the multipurpose feeder and has not
reached the base machine input sensor or has not reached the input
sensor in time.
Error Message 260 Paper Jam - Check Envelope Feeder
An envelope is jammed in the envelope feeder or has not reached
the base machine input sensor.
Error Message 27x Paper Jam - Check Bin x.
Paper is jammed in output bin x (X=bin 1 thru 3). Generally this
message appears when the paper has not cleared the exit sensor in
time, has jammed in the redrive assembly or has not fed into the
output bin selected.