Kyocera KM-4230 Service Manual page 546

• Feedshift and duplex sections
Problem
(1)
No refeed.
(2)
Paper is refed
askew.
(3)
Paper jams.
(4)
Abnormal
noise is
heard.
Causes/check procedures
Check if the surfaces of the
following rollers and pulleys are
dirty with paper powder: duplex
forwarding pulley, refeed pulley,
switchback roller and duplex
upper/lower registration rollers.
Check if the duplex forwarding
pulley is deformed.
Electrical problem with the
paper tapping solenoid.
Side registration amount ad-
justed incorrectly.
Check if the paper is exces-
sively curled.
Deformed guides along the pa-
per conveying path.
The feedshift solenoid malfunc-
tions.
Check if the contact between
the feedshift lower roller and
feedshift pulley is correct.
Check if pulleys, rollers and
gears operate smoothly.
Corrective measures
Clean with isopropyl alcohol.
Replace (see page 3-3-80).
See page 3-6-93.
Run maintenance item U052
and adjust the side registration
amount (see page 3-3-88).
Change the paper.
Check visually and repair or
replace any deformed guides.
See page 3-6-92.
Repair if the mount has come
off the feedshift pulley.
Grease the bushings and
gears.
2A3/4
3-6-101