Kyocera FS-9120DN Service Manual page 80

FS-9120DN/9520DN
Problem
(11)
A paper jam in the
paper feed section
is indicated during
printing (jam in
printer vertical paper
conveying section).
Jam code 18
(12)
A paper jam in the
paper feed section
is indicated during
printing (jam in pa-
per feeder PF-70*
vertical conveying
section).
Jam code 19
(13)
A paper jam in the
paper feed section
is indicated during
printing (jam in MP
tray conveying sec-
tion).
Jam code 20
(14)
A paper jam in the
paper feed section
is indicated during
printing (multiple
sheets in printer pa-
per feed section).
Jam code 21
*Optional.
1-5-10
Causes/check procedures
Broken feed switch 1 ac-
tuator, feed switch 2 ac-
tuator or feed switch 3 ac-
t u a t o r .
Defective feed switch 1,
feed switch 2, feed switch
3 or registration switch.
Defective engine controller
PWB.
Check if the feed pulleys
and feed roller are de-
formed.
Broken feed switch 3 ac-
tuator.
Defective feed switch 3.
Defective engine controller
PWB.
Broken desk feed switch
actuator.
Defective desk feed
switch.
Broken MP feed switch
actuator.
Defective MP feed switch
or registration switch.
Defective engine controller
PWB.
Broken feed switch 1 ac-
tuator, feed switch 2 ac-
tuator, feed switch 3 ac-
tuator, desk feed switch*
actuator or MP feed switch
actuator.
Defective feed switch 1,
feed switch 2, feed switch
3 or MP feed switch.
Defective engine controller
PWB.
Defective desk feed
switch*.
Corrective measures
Check visually and replace the switch if its actuator is broken.
Run maintenance item U031 and turn switch on and off manu-
ally. If "1" is not displayed when the switch is on or "0" is not dis-
played when the switch is off, replace switch.
When if all switches (above) are normal, replace engine control-
ler PWB (see page 1-6-24).
Check and repair if necessary.
Check visually and replace feed switch 3 if its actuator is broken.
Run maintenance item U031 and turn feed switch 3 on and off
manually. If "1" is not displayed when the switch is on or "0" is
not displayed when the switch is off, replace feed switch 3.
When if feed switch 3 (above) is normal, replace engine control-
ler PWB (see page 1-6-24).
Check visually and replace desk feed switch if its actuator is bro-
ken.
With 5 V DC present at CN2-8 on the desk main board, check if
CN2-7 on the desk main board remains low when the desk feed
switch is turned on and off. If it does, replace the desk feed
switch.
Check visually and replace the MP feed switch if its actuator is
broken.
Run maintenance item U031 and turn switch on and off manu-
ally. If "1" is not displayed when the switch is on or "0" is not dis-
played when the switch is off, replace switch.
When if switch (above) is normal, replace engine controller PWB
(see page 1-6-24).
Check visually and replace switch if its actuator is broken.
Run maintenance item U031 and turn switch on and off manu-
ally. If "1" is not displayed when the switch is on or "0" is not dis-
played when the switch is off, replace switch.
When if all switches (above) are normal, replace engine control-
ler PWB (see page 1-6-24).
With 5 V DC present at CN2-8 on the desk main board, check if
CN2-7 on the desk main board remains low when the desk feed
switch is turned on and off. If it does, replace the desk feed
switch.