Copying (Jam In Fixing Section); Feedshift And Duplex Sections; A Paper Jam In The Feedshift Section Is Indicated During - Kyocera Mita KM-4230 Service Manual

2A3/4

• Feedshift and duplex sections

Problem
(1) Broken feedshift switch actua-
A paper jam tor.
in the
feedshift sec-
Defective feedshift switch.
tion is indi-
cated during
copying (jam
in feedshift
section).
Electrical problem with the
feedshift solenoid.
Deformed lower feedshift guide.
Incorrect contact between the
feedshift lower roller and pulley.
(2) Broken duplex paper conveying
A paper jam switch actuator.
in the duplex
section is indi-
Defective duplex paper convey-
cated during
ing switch.
copying (jam
in duplex con-
veying
section).
Broken duplex registration
switch actuator.
Defective duplex registration
switch.
Broken duplex eject switch
actuator.
3-6-28
Causes/check procedures Corrective measures
Check visually and replace the
feedshift switch if its actuator is
broken.
With 5 V DC present at CN3-A5
on the engine PCB, check if
CN3-A4 on the engine PCB
goes low when the feedshift
switch is turned on. If not,
replace the feedshift switch.
Check (see page 3-6-94).
Check and remedy.
Check and remedy.
Check visually and replace the
duplex paper conveying switch
if its actuator is broken.
With 5 V DC present at CN9-6
on the engine PCB, check if
CN9-8 on the engine PCB goes
low when the duplex paper con-
veying switch is turned on. If
not, replace the duplex paper
conveying 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.
Check visually and replace the
duplex eject switch if its actua-
tor is broken.