Ricoh D009 Service Manual page 390

Service Call Conditions
Fusing unit jam
The fusing sensor detected a fusing unit paper late jam three times. The
paper was late and the fusing exit sensor could not detect the paper three
times.
559 A
Remove the paper that is stopped in the fusing unit.
Check that the fusing unit is clean and has no obstacles in the paper
feed path.
If the error persists, replace the fusing unit.
SC559 does not operate until SP1159 has been set to "1" (ON). This sets the
machine to count the number of occurrences of paper late jams in the fusing unit.
The default setting is "0" (OFF).
SC559 is issued after the third occurrence of a paper late jam in the fusing unit.
Once this SC has been issued, the machine cannot be used until the service
technician removes the cause of the jam and restores it to normal operation.
The jam counter is reset after a sheet of paper successfully passes the fusing exit
sensor after the cause of the jam has been removed.
D009/D011/D012/D013/D091/D092 3-22 SM Appendix