Kyocera KM-4230

2A3/4
3-6-90
Problem Causes Check procedures/corrective measures
Defective original
feed clutch coil.
The connector
terminals of the
original feed clutch
make poor contact.
Defective DF
driver PCB.
The connector
terminals of DF
safety switch 1
make poor contact.
Defective DF
safety switch 1.
A piece of paper
torn from an origi-
nal is caught
around the original
feed switch.
Defective original
feed switch.
A piece of paper
torn from an origi-
nal is caught
around the original
switchback switch.
Defective original
switchback switch.
(7)
The original
feed clutch
does not
operate.
(8)
A message
indicating
cover open is
displayed
when the
SRDF is
closed cor-
rectly.
(9)
An original
jams when
the main
switch is
turned on.
Check for continuity across the coil. If none,
replace the original feed clutch.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check if the original feed clutch operates
when CN5-A5 on the DF driver PCB is low.
If it does, replace the DF driver PCB.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check for continuity across the contacts of
the switch. If none when the switch is on,
replace DF safety switch 1.
Remove any found.
With 5 V DC present at CN6-B4 on the DF
driver PCB, check if CN6-B5 of the DF driver
PCB remains low when the original feed
switch is turned on and off. If it does, replace
the original feed switch.
Remove any found.
With 5 V DC present at CN6-A6 on the DF
driver PCB, check if CN6-A5 on the DF
driver PCB remains low when the original
switchback switch is turned on and off. If it
does, replace the original switchback switch.