Kyocera KM-3050 Service Manual page 133

Problem
(43) Defective reverse sensor.
A paper jam in
optional document
finisher is indicated
during copying
Check if the reverse motor
(reverse sensor jam).
malfunctions.
Jam code 93
Check if the reverse roller
and reverse pulley contact
each other.
Check if the reverse guide
is deformed.
Defective finisher main
PWB.
(44) 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.
(45) 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.
(46) Defective intermediate tray
A paper jam in sensor.
optional built-in fin-
isher is indicated dur-
ing copying (jam
between finisher and
machine).
Jam code 96
Causes/check procedures Corrective measures
With 5 V DC present at CN14-5 on the finisher main PWB, check
if CN14-7 on the finisher main PWB remains low or high when the
reverse sensor is turned on and off. If it does, replace the reverse
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 CN14-1and CN14-3 on the finisher main
PWB, check if CN14-2 and CN14-4 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 CN4-4 on the finisher main PWB, check if
CN4-6 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.
With 5 V DC present at YC3-1 on the finisher control PWB, check
if YC3-2 on the finisher control PWB remains low or high when the
intermediate tray sensor is turned on and off. If it does, replace the
intermediate tray sensor.
2GN/2GP/2GR
1-4-21