Ricoh D017 Service Manual page 393

Service Call Conditions
559 A Consecutive fusing unit paper jams
Three consecutive paper jams
occurred in the fusing unit.
The paper jam counter for the fusing
unit reaches 3 times. The paper jam
counter clears after the paper feeds
correctly.
Note: This SC is issued only if SP1159
is set to "1".
590 B Exhaust fan motor error
The CPU detects an exhaust fan lock
signal for more than 3.5 seconds.
620 B Communication error between IPU and ADF
A break occurred in
the connection
between the IPU and
ADF
621 B Communication timeout between BCU and finisher
A break (LOW) signal
was received from the
finisher.
D017/D018/D019/D020/D084/D085
Remove the paper jam in the
fusing unit.
Make sure that the paper path
in the fusing unit is clear.
Poor connection of the
exhaust fan motor
Too much load on the motor
drive
ADF disconnected
ADF defective
IPU harness connection loose, broken
IPU defective
External noise
Finisher serial cable connection loose,
broken
BCU defective
Finisher main board defective
External noise
3-18 SM Appendix