Kyocera KM-4230

2A3/4
3-6-29
(2)
A paper jam
in the duplex
section is indi-
cated during
copying (jam
in duplex con-
veying
section).
(3)
A paper jam
in the duplex
section is indi-
cated during
copying (jam
in duplex
stock
section).
Defective duplex eject switch.
Check if upper and lower
duplex registration rollers,
duplex paper conveying roller
and pulley, and duplex eject
roller and pulley contact each
other correctly.
Check if upper or lower duplex
registration roller, duplex paper
conveying roller or pulley, or
duplex eject roller or pulley are
deformed.
Check if the duplex forward
solenoid malfunctions.
Electrical problem with the du-
plex forward solenoid.
Broken switchback eject switch
actuator.
Defective switchback eject
switch.
Broken duplex registration
switch actuator.
Defective duplex registration
switch.
With 5 V DC present at CN9-13
on the engine PCB, check if
CN9-11 on the engine PCB
goes low when the duplex eject
switch is tuned on. If not, re-
place the duplex eject switch.
Check and remedy.
Check visually and remedy if
necessary.
Check and remedy.
Check (see page 3-6-94).
Check visually and replace the
switchback eject switch if its
actuator is broken.
With 5 V DC present at CN3-A2
on the engine PCB, check if
CN3-A1 on the engine PCB
goes low when the switchback
eject switch is turned on. If not,
replace the switchback eject
switch.
Check visually and replace the
duplex registration switch if its
actuator is broken.
With 5 V DC present at CN9-5
on the engine PCB, check if
CN9-7 on the engine PCB goes
low when the duplex
registration switch is turned on.
If not, replace the duplex
registration switch.
Problem Causes/check procedures Corrective measures