Kyocera TASKalfa 250ci Service Manual page 220

2JZ/2JX/2JV/2H7
Problem
(32)
An original jams in
optional DP is indi-
cated during copying
(jam in the original
switchback section
1).
Jam code 76
(33)
An original jams in
optional DP is indi-
cated during copying
(jam in the original
switchback section
2).
Jam code 77
(34)
A original jam in the
optional DP is indi-
cated as soon as the
main power switch is
turned on.
(DP cover open
JAM).
Jam code 78
(35)
An original jams in
optional DP is indi-
cated during copying
(jam in the original
eject section).
Jam code 79
(36)
A paper jam in
optional document
finisher is indicated
during copying (jam
between finisher and
machine).
Jam code 80
(37)
A paper jam in
optional document
finisher is indicated
during copying
(paper jam during
paper insertion to the
finisher).
Jam code 81
1-4-20
Causes/check procedures
Defective switch.
Defective motor.
Defective original registra-
tion switch.
Defective motor.
A piece of paper torn from
original is caught around
original feed switche, origi-
nal registration switch or DP
timing switch 1/2.
Defective switch.
Defective switch.
Defective motor.
Defective paper entry sen-
sor.
Extremely curled paper.
Defective paper entry sen-
sor.
Defective finisher main
PWB.
Corrective measures
Run maintenance item U244 and turn the following switch on and
off manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.
DP timing switch 1, switchback tray switch
Run maintenance item U243 and select the following motor on the
touch panel to be turned on and off. Check the status and remedy
if necessary.
Original conveying motor, original switchback motor
Run maintenance item U244 and turn the original registration
switch on and off manually. Replace the switch if indication of the
corresponding switch on the touch panel is not displayed in
reverse.
Run maintenance item U243 and select the following motor on the
touch panel to be turned on and off. Check the status and remedy
if necessary.
Original switchback motor, original feed motor
Check visually and remove it, if any.
Run maintenance item U244 and turn the following switch on and
off manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.
Original feed switch, original registration switch, DP timing switch
1/2
Run maintenance item U244 and turn the following switch on and
off manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.
DP timing switch 1, original eject switch
Run maintenance item U243 and select the following motor on the
touch panel to be turned on and off. Check the status and remedy
if necessary.
Original feed motor, original switchback motor
(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.
(Document finisher)
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.
Change the paper.
(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.
(Document finisher)
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.