Kyocera KM-3050 Service Manual page 130

2GN/2GP/2GR
Problem
(28)
An original jams in
optional DP is indi-
cated during copying
(a jam in the original
registration section).
Jam code 74
(29)
An original jams in
optional DP is indi-
cated during copying
(a jam in the original
registration section).
Jam code 75
(30)
An original jams in
optional DP is indi-
cated during copying
(a jam in the original
feed/conveying sec-
tion).
Jam code 76
(31)
A paper jam in
optional document
finisher is indicated
during copying (jam
between finisher and
machine).
Jam code 80
(32)
A paper jam in
optional document
finisher is indicated
during copying
(paper jam during
paper insertion to the
finisher).
Jam code 81
1-4-18
Causes/check procedures
Defective original registra-
tion switch.
Defective switch.
Defective DP timing switch
2.
Defective paper entry sen-
sor.
3000-sheet document finisher/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.
Corrective measures
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 U244 and turn switch on and off manually.
Replace the switch if indication of the corresponding switch on the
touch panel is not displayed in reverse.
Original registration switch, DP timing switch 1
Run maintenance item U244 and turn the DP timing switch 2 on
and off manually. Replace the switch if indication of the corre-
sponding switch on the touch panel is not displayed in reverse.
Run maintenance item U241 and turn the paper entry sensor on
and off manually. Replace the original switchback switch if indica-
tion of the corresponding switch on the touch panel is not dis-
played in reverse.
Change the paper.
(3000-sheet document finisher)
Run maintenance item U241 and turn the paper entry sensor on
and off manually. Replace the original switchback switch if indica-
tion of the corresponding switch on the touch panel is not dis-
played in reverse.
(Document finisher)
With 5 V DC present at CN14-1 and CN14-3 on the finisher main
PWB, check if CN14-2 and CN14-4 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.
Change 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.