Kyocera Mita KM-4530 Service Manual page 201

2BC/D
Problem
(7) Defective original feed
The original feed clutch coil.
clutch does not
The connector terminals of
operate.
the original feed clutch
make poor contact.
Defective DF driver PCB.
(8) The connector terminals of
A message indicat- DF safety switch 1 make
ing cover open is poor contact.
displayed when the
Defective DF safety switch
DF is closed cor-
1.
rectly.
(9) A piece of paper torn from
An original jams an original is caught
when the main around the original feed
switch is turned on. switch.
Defective original feed
switch.
A piece of paper torn from
an original is caught
around the original switch-
back switch.
Defective original switch-
back switch.
A piece of paper torn from
an original is caught
around the DF timing
switch.
Defective DF timing
switch.
The surface facing the DF
timing switch is soiled.
1-5-54
Causes
Check for continuity across the coil. If none, replace the original
feed clutch.
Reinsert the connector. Also check for continuity within the con-
nector 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 con-
nector 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.
Run maintenance item U244 and turn the original feed switch on
and off manually. Replace the original feed switch if indication of
the corresponding switch on the touch panel is not displayed in
reverse.
Remove any found.
Run maintenance item U244 and turn the original switchback
switch on and off manually. Replace the original switchback
switch if indication of the corresponding switch on the touch
panel is not displayed in reverse.
Remove any found.
Run maintenance item U244 and turn the DF timing switch on
and off manually. Replace the DF timing switch if indication of
the corresponding switch on the touch panel is not displayed in
reverse.
Check if the projection at the center of the conveying cover that
is facing the DF timing switch is soiled with paper powder. If so,
clean it.
Check procedures/corrective measures