Kyocera TASKalfa 420i Service Manual page 178

2KR/2KS
Problem
(33)
A paper jam in fin-
isher is indicated dur-
ing copying (jam
between finisher and
machine).
Jam code 80
(34)
A paper jam in fin-
isher is indicated dur-
ing copying (paper
jam during paper
insertion to the fin-
isher).
Jam code 81
(35)
A paper jam in fin-
isher is indicated dur-
ing copying (finisher
stapler jam).
Jam code 82
1-4-20
Causes/check procedures
Defective paper entry sen-
sor.
3000-sheet document finisher
Extremely curled paper.
Defective paper entry sen-
sor.
Defective finisher main
PWB.
Document finisher
Extremely curled paper.
Defective paper entry sen-
sor.
Defective finisher main
PWB.
Built-in finisher
Extremely curled paper.
Defective paper conveying
switch.
Check if the feedshift roller
or feedshift pulley is
deformed.
3000-sheet document finisher/Document finisher
Defective staple home posi-
tion sensor.
Built-in finisher
The stapler is blocked with
a staple.
Defective stapler section.
Corrective measures
(3000-sheet document finisher)
Run maintenance item U241 and turn the paper entry sensor on
and off manually. Replace the sensor if indication of the corre-
sponding sensor on the touch panel is not displayed in reverse.
Change the paper.
Run maintenance item U241 and turn the paper entry sensor on
and off manually. Replace the sensor if indication of the corre-
sponding sensor on the touch panel is not displayed in reverse.
Replace the finisher main PWB and check for correct operation.
Change the paper.
With 5 V DC present at CN3-1 and CN3-3 on the finisher main
PWB, check if CN3-2and CN3-4 on the finisher main PWB
remains low or high when the paper entry sensor is turned on and
off. If it does, replace the paper entry sensor.
Replace the finisher main PWB and check for correct operation.
Replace the paper.
With 5 V DC present at YC2-23 on the finisher control PWB,
check if YC2-21 on the finisher control PWB remains low or high
when the paper conveying switch is turned on and off. If it does,
replace the paper conveying switch.
Check and remedy.
Run maintenance item U241 and turn the staple home position
sensor on and off manually. Replace the sensor if indication of the
corresponding sensor on the touch panel is not displayed in
reverse.
Remove the stapler cartridge, and check the cartridge and the sta-
pling section of the stapler. Remove the staple if any.
With 5 V DC present at YC2-24 on the finisher control PWB,
check if YC2-19 on the finisher control PWB remains low or high.
If it does, replace the stapler section.