Kyocera FS-C8500DN Service Manual page 173

Problem
(35) Defective eject paper sen-
A paper jam in sor.
optional document
finisher is indicated
during copying (eject
Check if the paper convey-
sensor non-arrival
ing motor malfunctions.
jam).
Jam code 92
Check if the eject roller and
eject pulley contact each
other.
Check if the eject guide is
deformed.
Defective finisher main
PWB.
(36) Defective switchback sen-
A paper jam in sor.
optional document
finisher is indicated
during copying
Check if the switchback
(switchback sensor
motor malfunctions.
jam).
Jam code 93
Check if the switchback
roller and switchback pul-
ley contact each other.
Check if the switchback
guide is deformed.
Defective finisher main
PWB.
(37) Extremely curled paper.
A paper jam in
Defective paper entry sen-
optional document
sor.
finisher is indicated
during copying
(paper entry sensor
stay jam).
Check if the paper entry
Jam code 94
guide is deformed.
Defective finisher main
PWB.
(38) Defective paper conveying
A paper jam in sensor.
optional document
finisher is indicated
during copying
Check if the paper convey-
(paper conveying
ing motor malfunctions.
sensor jam).
Jam code 95
Check if the paper convey-
ing roller and paper convey-
ing pulley contact each
other.
Check if the paper convey-
ing guide is deformed.
Defective finisher main
PWB.
Causes/check procedures Corrective measures
With 5 V DC present at CN7-1 on the finisher main PWB, check if
CN7-3 on the finisher main PWB remains low or high when the
eject paper sensor is turned on and off. If it does, replace the eject
paper sensor.
Check.
Check and remedy.
Check and remedy.
Replace the finisher main PWB and check for correct operation.
With 5 V DC present at CN3-5 on the finisher main PWB, check if
CN3-7 on the finisher main PWB remains low or high when the
switchback sensor is turned on and off. If it does, replace the
switchback sensor.
Check.
Check and remedy.
Check and remedy.
Replace the finisher main PWB and check for correct operation.
Change the paper.
With 5 V DC present at CN3-1and CN3-3 on the finisher main
PWB, check if CN3-2 and CN3-4 on the main PCB remains low or
high when the paper entry sensor is turned on and off. If it does,
replace the paper entry sensor.
Check and remedy.
Replace the finisher main PWB and check for correct operation.
With 5 V DC present at CN9-1 on the finisher main PWB, check if
CN9-3 on the finisher main PWB remains low or high when the
paper conveying sensor is turned on and off. If it does, replace the
paper conveying sensor.
Check.
Check and remedy.
Check and remedy.
Replace the finisher main PWB and check for correct operation.
2KA
1-4-19