The Original Feed Clutch Does Not Operate - Kyocera Mita KM-4230 Service Manual

2A3/4
Problem
(7) Defective original
The original feed clutch coil.
feed clutch
The connector
does not
terminals of the
operate.
original feed clutch
make poor contact.
Defective DF
driver PCB.
(8) The connector
A message terminals of DF
indicating safety switch 1
cover open is make poor contact.
displayed
Defective DF
when the
safety switch 1.
SRDF is
closed cor-
rectly.
(9) A piece of paper
An original torn from an origi-
jams when nal is caught
the main around the original
switch is feed switch.
turned on.
Defective original
feed switch.
A piece of paper
torn from an origi-
nal is caught
around the original
switchback switch.
Defective original
switchback switch.
3-6-90
Causes Check procedures/corrective measures
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.